gh actions: upgrade to 1.0.83-1

.gitignore

@@ -1,5 +1,6 @@
 # Makefile.in
 src/Makefile
+src/tests/Makefile
 
 # Prerequisites
 *.d
@@ -62,6 +63,9 @@ src/tests/test_sorted_array
 src/tests/test_sorted_queue
 src/tests/test_thread_local
 src/tests/test_memcpy
+src/tests/mblock_benchmark
+src/tests/cpool_benchmark
+src/tests/test_fast_buffer
 
 # other
 *.swp

HISTORY

@@ -1,4 +1,30 @@
 
+Version 1.83  2025-11-15
+  * fast_task_queue.h: remove field finish_callback
+
+Version 1.82  2025-11-04
+  * set use_io_uring explicitly
+
+Version 1.81  2025-10-05
+  * support Linux io_uring
+  * free_queue support parameter: need_shrink and set task->shrinked
+  * IOEventCallback: change event type from short to int
+
+Version 1.80  2025-09-10
+  * getIpaddrByNameEx: IPv4 has priority over IPv6
+  * shared_func.[hc]: add function fc_ftoa
+
+Version 1.79  2025-08-29
+  * logger.h export function log_it_ex3
+  * shared_func.[hc]: add function bytes_to_human_str
+
+Version 1.78  2025-08-07
+  * getIpaddrByName: normalize ip addr when input addr is IPv4 or IPv6
+  * add files: spinlock.[hc]
+  * shared_func.[hc]: change int2buff, buff2int etc. functions to static inline
+  * shared_func.[hc]: add functions short2hex, int2hex, long2hex etc.
+  * performance opt.: replace sprintf and snprintf as necessary
+
 Version 1.77  2025-03-18
   * impl. shorten_path for /./ and /../
   * add function fc_compare_int64_ptr

INSTALL

@@ -6,11 +6,20 @@ Please visit the libfastcommon Home Page for more detail.
 English language: https://github.com/happyfish100/libfastcommon
 Chinese language: http://www.fastken.com/
 
+[Optional Step]
+You can enable io_uring for higher performance when Linux kernel version >= 6.2,
+CentOS, RockyLinux, AlmaLinux, RHEL etc.:
+   sudo yum install liburing-devel -y
+
+Debian, Ubuntu etc.:
+   sudo apt install liburing-dev -y
+
+
 # download libfastcommon source codes and install it,
 #   github address:  https://github.com/happyfish100/libfastcommon.git
 #   gitee address:   https://gitee.com/fastdfs100/libfastcommon.git
 # the command lines as:
 
    git clone https://github.com/happyfish100/libfastcommon.git
-   cd libfastcommon; git checkout V1.0.72
-   ./make.sh clean && ./make.sh && ./make.sh install
+   cd libfastcommon; git checkout V1.0.83
+   ./make.sh clean && ./make.sh && sudo ./make.sh install

debian/changelog

@@ -1,3 +1,33 @@
+libfastcommon (1.0.83-1) unstable; urgency=medium
+
+  * upgrade to 1.0.83-1
+
+ -- YuQing <384681@qq.com>  Sun, 23 Nov 2025 10:47:37 +0000
+
+libfastcommon (1.0.83-1) unstable; urgency=medium
+
+  * upgrade to 1.0.83-1
+
+ -- YuQing <384681@qq.com>  Sun, 23 Nov 2025 10:00:00 +0000
+
+libfastcommon (1.0.83-1) unstable; urgency=medium
+
+  * upgrade to 1.0.83-1
+
+ -- YuQing <384681@qq.com>  Sun, 23 Nov 2025 09:05:57 +0000
+
+libfastcommon (1.0.78-1) unstable; urgency=medium
+
+  * upgrade to 1.0.78-1
+
+ -- YuQing <384681@qq.com>  Sat, 16 Aug 2025 16:31:05 +0000
+
+libfastcommon (1.0.77-1) unstable; urgency=medium
+
+  * upgrade to 1.0.77-1
+
+ -- YuQing <384681@qq.com>  Sun, 06 Apr 2025 16:55:50 +0000
+
 libfastcommon (1.0.75-1) unstable; urgency=medium
 
   * upgrade to 1.0.75-1

libfastcommon.spec

@@ -3,7 +3,7 @@
 %define CommitVersion %(echo $COMMIT_VERSION)
 
 Name: libfastcommon
-Version: 1.0.77
+Version: 1.0.83
 Release: 1%{?dist}
 Summary: c common functions library extracted from my open source projects FastDFS
 License: LGPL
@@ -17,6 +17,14 @@ BuildRequires: libcurl-devel
 Requires: libcurl
 Requires: %__cp %__mv %__chmod %__grep %__mkdir %__install %__id
 
+%define kernel_major %(uname -r | cut -d'.' -f1)
+%define kernel_minor %(uname -r | cut -d'.' -f2)
+%define kernel_ver_int %(expr %{kernel_major} \\* 100 + %{kernel_minor})
+%if %{kernel_ver_int} >= 514
+BuildRequires: liburing-devel >= 2.4
+Requires: liburing >= 2.4
+%endif
+
 %description
 c common functions library extracted from my open source projects FastDFS.
 this library is very simple and stable. functions including: string, logger,

make.sh

@@ -112,7 +112,21 @@ HAVE_VMMETER_H=0
 HAVE_USER_H=0
 if [ "$uname" = "Linux" ]; then
   OS_NAME=OS_LINUX
+
+  major_version=$(uname -r | awk -F . '{print $1;}')
+  minor_version=$(uname -r | awk -F . '{print $2;}')
+  if [ $major_version -eq 5 -a $minor_version -ge 14 ] || [ $major_version -gt 5 ]; then
+    out=$(grep -F IORING_OP_SEND_ZC /usr/include/liburing/io_uring.h 2>/dev/null)
+    if [ -n "$out" ]; then
+      IOEVENT_USE=IOEVENT_USE_URING
+      LIBS="$LIBS -luring"
+    else
       IOEVENT_USE=IOEVENT_USE_EPOLL
+    fi
+  else
+    IOEVENT_USE=IOEVENT_USE_EPOLL
+  fi
+
   if [ $glibc_minor -lt 17 ]; then
     LIBS="$LIBS -lrt"
   fi
@@ -261,3 +275,12 @@ make $1 $2 $3
 if [ "$1" = "clean" ]; then
   /bin/rm -f Makefile _os_define.h
 fi
+
+cd tests
+cp Makefile.in Makefile
+sed_replace "s#\\\$(CC)#gcc#g" Makefile
+sed_replace "s#\\\$(INCS)#$INCS#g" Makefile
+sed_replace "s#\\\$(LIBS)#$LIBS#g" Makefile
+if [ "$1" = "clean" ]; then
+  /bin/rm -f Makefile
+fi

src/Makefile.in

@@ -17,7 +17,7 @@ FAST_SHARED_OBJS = hash.lo chain.lo shared_func.lo ini_file_reader.lo \
                    multi_socket_client.lo skiplist_set.lo uniq_skiplist.lo   \
                    json_parser.lo buffered_file_writer.lo server_id_func.lo  \
                    fc_queue.lo sorted_queue.lo fc_memory.lo shared_buffer.lo \
-                   thread_pool.lo array_allocator.lo sorted_array.lo
+                   thread_pool.lo array_allocator.lo sorted_array.lo spinlock.lo
 
 FAST_STATIC_OBJS = hash.o chain.o shared_func.o ini_file_reader.o \
                    logger.o sockopt.o base64.o sched_thread.o \
@@ -31,7 +31,7 @@ FAST_STATIC_OBJS = hash.o chain.o shared_func.o ini_file_reader.o \
                    multi_socket_client.o skiplist_set.o uniq_skiplist.o  \
                    json_parser.o buffered_file_writer.o server_id_func.o \
                    fc_queue.o sorted_queue.o fc_memory.o shared_buffer.o \
-                   thread_pool.o array_allocator.o sorted_array.o
+                   thread_pool.o array_allocator.o sorted_array.o spinlock.o
 
 HEADER_FILES = common_define.h hash.h chain.h logger.h base64.h \
                shared_func.h pthread_func.h ini_file_reader.h _os_define.h \
@@ -47,7 +47,7 @@ HEADER_FILES = common_define.h hash.h chain.h logger.h base64.h \
                fc_list.h locked_list.h json_parser.h buffered_file_writer.h \
                server_id_func.h fc_queue.h sorted_queue.h fc_memory.h \
                shared_buffer.h thread_pool.h fc_atomic.h array_allocator.h \
-               sorted_array.h
+               sorted_array.h spinlock.h
 
 ALL_OBJS = $(FAST_STATIC_OBJS) $(FAST_SHARED_OBJS)
 

src/array_allocator.c

@@ -47,7 +47,7 @@ int array_allocator_init_ex(ArrayAllocatorContext *ctx,
         start = end;
     }
 
-    snprintf(name, sizeof(name), "%s-array", name_prefix);
+    fc_combine_two_strings(name_prefix, "array", '-', name);
     return fast_allocator_init_ex(&ctx->allocator, name,
             obj_size, NULL, regions, region - regions, 0,
             0.9999, reclaim_interval, need_lock);

src/base64.c

@@ -24,6 +24,7 @@
 #include <fcntl.h>
 #include <errno.h>
 #include "fc_memory.h"
+#include "shared_func.h"
 #include "base64.h"
 
 /**
@@ -53,15 +54,11 @@ void base64_set_line_length(struct base64_context *context, const int length)
     * Usually contains only a combination of chars \n and \r.
     * Could be any chars not in set A-Z a-z 0-9 + /.
 */
-void base64_set_line_separator(struct base64_context *context, \
+void base64_set_line_separator(struct base64_context *context,
 		const char *pLineSeparator)
 {
-    context->line_sep_len = snprintf(context->line_separator, \
-			sizeof(context->line_separator), "%s", pLineSeparator);
-    if (context->line_sep_len >= sizeof(context->line_separator))
-    {
-        context->line_sep_len = sizeof(context->line_separator) - 1;
-    }
+    context->line_sep_len = fc_safe_strcpy(context->
+            line_separator, pLineSeparator);
 }
 
 void base64_init_ex(struct base64_context *context, const int nLineLength, \

src/buffered_file_writer.c

@@ -48,7 +48,7 @@ int buffered_file_writer_open_ex(BufferedFileWriter *writer,
         return ENOMEM;
     }
 
-    snprintf(writer->filename, sizeof(writer->filename), "%s", filename);
+    fc_safe_strcpy(writer->filename, filename);
     writer->fd = open(writer->filename, O_WRONLY |
             O_CREAT | O_TRUNC | O_CLOEXEC, mode);
     if (writer->fd < 0)

src/common_define.h

@@ -112,13 +112,21 @@ extern int pthread_mutexattr_settype(pthread_mutexattr_t *attr, int kind);
 #define SYNC_LOG_BUFF_DEF_INTERVAL      10
 #define TIME_NONE                       -1
 
+#define FC_BYTES_ONE_KB      (  1 << 10)
+#define FC_BYTES_ONE_MB      (  1 << 20)
+#define FC_BYTES_ONE_GB      (  1 << 30)
+#define FC_BYTES_ONE_TB      (1LL << 40)
+#define FC_BYTES_ONE_PB      (1LL << 50)
+#define FC_BYTES_ONE_EB      (1LL << 60)
+
 #if defined(IOV_MAX) && IOV_MAX > 256
 #define FC_IOV_BATCH_SIZE  256
 #else
 #define FC_IOV_BATCH_SIZE  IOV_MAX
 #endif
 
-// 由于要支持IPv6，所以将IP_ADDRESS_SIZE的值由16修改为46
+#define IPV4_ADDRESS_SIZE   INET_ADDRSTRLEN   //16
+#define IPV6_ADDRESS_SIZE   INET6_ADDRSTRLEN  //46
 #define IP_ADDRESS_SIZE     INET6_ADDRSTRLEN  //46
 #define FORMATTED_IP_SIZE   (IP_ADDRESS_SIZE + 2)
 #define INFINITE_FILE_SIZE (256 * 1024LL * 1024 * 1024 * 1024 * 1024LL)
@@ -447,6 +455,14 @@ static inline int fc_string_compare(const string_t *s1, const string_t *s2)
     }
 }
 
+static inline bool fc_string_equal_ex(const char *str1,
+        const int len1, const char *str2, const int len2)
+{
+    return (len1 == len2) && (memcmp(str1, str2, len1) == 0);
+}
+#define fc_string_equals_ex(str1, len1, str2, len2) \
+    fc_string_equal_ex(str1, len1, str2, len2)
+
 static inline bool fc_string_equal(const string_t *s1, const string_t *s2)
 {
     return (s1->len == s2->len) && (memcmp(s1->str, s2->str, s1->len) == 0);
@@ -540,6 +556,8 @@ static inline int fc_fallocate(int fd, const int64_t size)
 
 #endif
 
+#define FC_MACRO_STRINGIFY(x) #x
+#define FC_MACRO_TOSTRING(x)  FC_MACRO_STRINGIFY(x)
 
 #ifdef __cplusplus
 }

src/connection_pool.c

@@ -25,10 +25,20 @@
 #include "server_id_func.h"
 #include "connection_pool.h"
 
+static void conn_pool_disconnect_server_cb(ConnectionInfo *conn)
+{
+    conn_pool_disconnect_server(conn);
+}
+
+static bool conn_pool_is_connected_cb(ConnectionInfo *conn)
+{
+    return conn_pool_is_connected(conn);
+}
+
 ConnectionCallbacks g_connection_callbacks = {
     false, {{conn_pool_connect_server_ex1,
-        conn_pool_disconnect_server,
-        conn_pool_is_connected},
+        conn_pool_disconnect_server_cb,
+        conn_pool_is_connected_cb},
     {NULL, NULL, NULL}}, {NULL}
 };
 
@@ -52,7 +62,10 @@ static int node_init_for_rdma(ConnectionNode *node,
 static inline void conn_pool_get_key(const ConnectionInfo *conn,
         char *key, int *key_len)
 {
-    *key_len = sprintf(key, "%s-%u", conn->ip_addr, conn->port);
+    *key_len = strlen(conn->ip_addr);
+    memcpy(key, conn->ip_addr, *key_len);
+    *(key + (*key_len)++) = '-';
+    *key_len += fc_itoa(conn->port, key + (*key_len));
 }
 
 static int close_conn(ConnectionPool *cp, ConnectionManager *cm,
@@ -408,20 +421,6 @@ void conn_pool_destroy(ConnectionPool *cp)
     fast_mblock_destroy(&cp->node_allocator);
 }
 
-void conn_pool_disconnect_server(ConnectionInfo *conn)
-{
-    if (conn->sock >= 0)
-    {
-        close(conn->sock);
-        conn->sock = -1;
-    }
-}
-
-bool conn_pool_is_connected(ConnectionInfo *conn)
-{
-    return (conn->sock >= 0);
-}
-
 int conn_pool_connect_server_ex1(ConnectionInfo *conn,
         const char *service_name, const int connect_timeout_ms,
         const char *bind_ipaddr, const bool log_connect_error)

src/connection_pool.h

@@ -331,9 +331,19 @@ int conn_pool_close_connection_ex(ConnectionPool *cp,
 *      conn: the connection
 *   return 0 for success, != 0 for error
 */
-void conn_pool_disconnect_server(ConnectionInfo *conn);
+static inline void conn_pool_disconnect_server(ConnectionInfo *conn)
+{
+    if (conn->sock >= 0)
+    {
+        close(conn->sock);
+        conn->sock = -1;
+    }
+}
 
-bool conn_pool_is_connected(ConnectionInfo *conn);
+static inline bool conn_pool_is_connected(ConnectionInfo *conn)
+{
+    return (conn->sock >= 0);
+}
 
 /**
 *   connect to the server
@@ -462,8 +472,7 @@ int conn_pool_parse_server_info(const char *pServerStr,
 static inline void conn_pool_set_server_info(ConnectionInfo *pServerInfo,
         const char *ip_addr, const int port)
 {
-    snprintf(pServerInfo->ip_addr, sizeof(pServerInfo->ip_addr),
-            "%s", ip_addr);
+    fc_safe_strcpy(pServerInfo->ip_addr, ip_addr);
     pServerInfo->port = port;
     pServerInfo->af = is_ipv6_addr(ip_addr) ? AF_INET6 : AF_INET;
     pServerInfo->sock = -1;

src/fast_buffer.c

@@ -26,23 +26,28 @@
 #include "fc_memory.h"
 #include "fast_buffer.h"
 
-int fast_buffer_init_ex(FastBuffer *buffer, const int init_capacity)
+int fast_buffer_init_ex(FastBuffer *buffer, const int init_capacity,
+        const bool binary_mode, const bool check_capacity)
 {
     buffer->length = 0;
+    buffer->binary_mode = binary_mode;
     if (init_capacity > 0)
     {
         buffer->alloc_size = init_capacity;
+        buffer->check_capacity = check_capacity;
     }
     else
     {
         buffer->alloc_size = 256;
+        buffer->check_capacity = true;
     }
     buffer->data = (char *)fc_malloc(buffer->alloc_size);
     if (buffer->data == NULL)
     {
         return ENOMEM;
     }
-    *(buffer->data) = '\0';
+
+    fast_buffer_set_null_terminator(buffer);
     return 0;
 }
 
@@ -88,8 +93,10 @@ int fast_buffer_set_capacity(FastBuffer *buffer, const int capacity)
 
     if (buffer->length > 0) {
         memcpy(buff, buffer->data, buffer->length);
+        if (!buffer->binary_mode) {
             *(buff + buffer->length) = '\0';
         }
+    }
 
     free(buffer->data);
     buffer->data = buff;
@@ -127,7 +134,7 @@ int fast_buffer_append(FastBuffer *buffer, const char *format, ...)
         }
         else
         {
-            *(buffer->data + buffer->length) = '\0';  //restore
+            fast_buffer_set_null_terminator(buffer);  //restore
         }
     }
     return result;
@@ -148,7 +155,7 @@ int fast_buffer_append_buff(FastBuffer *buffer, const char *data, const int len)
 
     memcpy(buffer->data + buffer->length, data, len);
     buffer->length += len;
-    *(buffer->data + buffer->length) = '\0';
+    fast_buffer_set_null_terminator(buffer);
     return 0;
 }
 
@@ -171,32 +178,6 @@ int fast_buffer_append_binary(FastBuffer *buffer,
     return 0;
 }
 
-int fast_buffer_append_int(FastBuffer *buffer, const int n)
-{
-    int result;
-
-    if ((result=fast_buffer_check(buffer, 16)) != 0)
-    {
-        return result;
-    }
-
-    buffer->length += sprintf(buffer->data + buffer->length, "%d", n);
-    return 0;
-}
-
-int fast_buffer_append_int64(FastBuffer *buffer, const int64_t n)
-{
-    int result;
-
-    if ((result=fast_buffer_check(buffer, 32)) != 0)
-    {
-        return result;
-    }
-
-    buffer->length += sprintf(buffer->data + buffer->length, "%"PRId64, n);
-    return 0;
-}
-
 int fast_buffer_append_file(FastBuffer *buffer, const char *filename)
 {
     struct stat st;

src/fast_buffer.h

@@ -17,12 +17,14 @@
 #define __FAST_BUFFER_H__
 
 #include <stdint.h>
-#include "common_define.h"
+#include "shared_func.h"
 
 typedef struct fast_buffer {
     char *data;
     int alloc_size;
     int length;
+    bool binary_mode;
+    bool check_capacity;
 } FastBuffer;
 
 #ifdef __cplusplus
@@ -39,26 +41,39 @@ static inline char *fast_buffer_data(FastBuffer *buffer)
     return buffer->data;
 }
 
-int fast_buffer_init_ex(FastBuffer *buffer, const int init_capacity);
+int fast_buffer_init_ex(FastBuffer *buffer, const int init_capacity,
+        const bool binary_mode, const bool check_capacity);
+
+static inline int fast_buffer_init1(FastBuffer *buffer, const int init_capacity)
+{
+    const bool binary_mode = false;
+    const bool check_capacity = true;
+    return fast_buffer_init_ex(buffer, init_capacity,
+            binary_mode, check_capacity);
+}
 
 static inline int fast_buffer_init(FastBuffer *buffer)
 {
-    return fast_buffer_init_ex(buffer, 0);
+    const int init_capacity = 0;
+    return fast_buffer_init1(buffer, init_capacity);
 }
 
+#define fast_buffer_set_null_terminator(buffer)  \
+    if (!buffer->binary_mode) *(buffer->data + buffer->length) = '\0'
+
+#define fast_buffer_check(buffer, inc_len)   \
+    ((buffer)->check_capacity ? fast_buffer_check_inc_size(buffer, inc_len) : 0)
+
 #define fast_buffer_clear(buffer) fast_buffer_reset(buffer)
 
 static inline void fast_buffer_reset(FastBuffer *buffer)
 {
     buffer->length = 0;
-    *buffer->data = '\0';
+    fast_buffer_set_null_terminator(buffer);
 }
 
 void fast_buffer_destroy(FastBuffer *buffer);
 
-#define fast_buffer_check(buffer, inc_len) \
-    fast_buffer_check_inc_size(buffer, inc_len)
-
 int fast_buffer_set_capacity(FastBuffer *buffer, const int capacity);
 
 static inline int fast_buffer_check_capacity(FastBuffer *buffer,
@@ -86,9 +101,50 @@ int fast_buffer_append_buff(FastBuffer *buffer,
 int fast_buffer_append_binary(FastBuffer *buffer,
         const void *data, const int len);
 
-int fast_buffer_append_int(FastBuffer *buffer, const int n);
+static inline int fast_buffer_append_char(FastBuffer *buffer, const char ch)
+{
+    int result;
 
-int fast_buffer_append_int64(FastBuffer *buffer, const int64_t n);
+    if ((result=fast_buffer_check(buffer, 1)) != 0)
+    {
+        return result;
+    }
+
+    *(buffer->data + buffer->length++) = ch;
+    fast_buffer_set_null_terminator(buffer);
+    return 0;
+}
+
+static inline int fast_buffer_append_int32(FastBuffer *buffer, const int n)
+{
+    int result;
+
+    if ((result=fast_buffer_check(buffer, 16)) != 0)
+    {
+        return result;
+    }
+
+    buffer->length += fc_itoa(n, buffer->data + buffer->length);
+    fast_buffer_set_null_terminator(buffer);
+    return 0;
+}
+
+static inline int fast_buffer_append_int64(FastBuffer *buffer, const int64_t n)
+{
+    int result;
+
+    if ((result=fast_buffer_check(buffer, 32)) != 0)
+    {
+        return result;
+    }
+
+    buffer->length += fc_itoa(n, buffer->data + buffer->length);
+    fast_buffer_set_null_terminator(buffer);
+    return 0;
+}
+
+#define fast_buffer_append_int(buffer, n)  \
+    fast_buffer_append_int64(buffer, n)
 
 int fast_buffer_append_file(FastBuffer *buffer, const char *filename);
 

src/fast_mblock.c

@@ -477,8 +477,8 @@ static int fast_mblock_prealloc(struct fast_mblock_man *mblock)
 #endif
 	}
 
-    ((struct fast_mblock_node *)pLast)->next = mblock->free_chain_head;
-	mblock->free_chain_head = (struct fast_mblock_node *)pTrunkStart;
+    ((struct fast_mblock_node *)pLast)->next = mblock->freelist.head;
+	mblock->freelist.head = (struct fast_mblock_node *)pTrunkStart;
 
     pMallocNode->ref_count = 0;
     pMallocNode->alloc_count = alloc_count;
@@ -558,7 +558,7 @@ int fast_mblock_init_ex2(struct fast_mblock_man *mblock, const char *name,
     mblock->info.trunk_total_count = 0;
     mblock->info.trunk_used_count = 0;
     mblock->info.delay_free_elements = 0;
-    mblock->free_chain_head = NULL;
+    mblock->freelist.head = NULL;
     mblock->delay_free_chain.head = NULL;
     mblock->delay_free_chain.tail = NULL;
     mblock->info.element_total_count = 0;
@@ -584,7 +584,7 @@ int fast_mblock_init_ex2(struct fast_mblock_man *mblock, const char *name,
 
     if (name != NULL)
     {
-        snprintf(mblock->info.name, sizeof(mblock->info.name), "%s", name);
+        fc_safe_strcpy(mblock->info.name, name);
     }
     else
     {
@@ -714,7 +714,7 @@ void fast_mblock_destroy(struct fast_mblock_man *mblock)
         INIT_HEAD(&mblock->trunks.head);
         mblock->info.trunk_total_count = 0;
         mblock->info.trunk_used_count = 0;
-        mblock->free_chain_head = NULL;
+        mblock->freelist.head = NULL;
         mblock->info.element_used_count = 0;
         mblock->info.delay_free_elements = 0;
         mblock->info.element_total_count = 0;
@@ -732,10 +732,10 @@ static inline struct fast_mblock_node *alloc_node(
 
     while (1)
     {
-        if (mblock->free_chain_head != NULL)
+        if (mblock->freelist.head != NULL)
         {
-            pNode = mblock->free_chain_head;
-            mblock->free_chain_head = pNode->next;
+            pNode = mblock->freelist.head;
+            mblock->freelist.head = pNode->next;
             break;
         }
 
@@ -757,8 +757,8 @@ static inline struct fast_mblock_node *alloc_node(
 
         if ((result=fast_mblock_prealloc(mblock)) == 0)
         {
-            pNode = mblock->free_chain_head;
-            mblock->free_chain_head = pNode->next;
+            pNode = mblock->freelist.head;
+            mblock->freelist.head = pNode->next;
             break;
         }
 
@@ -829,9 +829,9 @@ int fast_mblock_free(struct fast_mblock_man *mblock,
 		return result;
 	}
 
-    notify = (mblock->free_chain_head == NULL);
-	pNode->next = mblock->free_chain_head;
-	mblock->free_chain_head = pNode;
+    notify = (mblock->freelist.head == NULL);
+	pNode->next = mblock->freelist.head;
+	mblock->freelist.head = pNode;
     fast_mblock_ref_counter_dec(mblock, pNode);
 
     if (mblock->alloc_elements.need_wait && notify)
@@ -855,18 +855,21 @@ static inline void batch_free(struct fast_mblock_man *mblock,
         struct fast_mblock_chain *chain)
 {
     bool notify;
+    int count;
     struct fast_mblock_node *pNode;
 
+    count = 0;
     pNode = chain->head;
     while (pNode != NULL)
     {
+        ++count;
         fast_mblock_ref_counter_dec(mblock, pNode);
         pNode = pNode->next;
     }
 
-    notify = (mblock->free_chain_head == NULL);
-    chain->tail->next = mblock->free_chain_head;
-    mblock->free_chain_head = chain->head;
+    notify = (mblock->freelist.head == NULL);
+    chain->tail->next = mblock->freelist.head;
+    mblock->freelist.head = chain->head;
     if (mblock->alloc_elements.need_wait && notify)
     {
         pthread_cond_broadcast(&mblock->lcp.cond);
@@ -1066,7 +1069,7 @@ static int fast_mblock_chain_count(struct fast_mblock_man *mblock,
 
 int fast_mblock_free_count(struct fast_mblock_man *mblock)
 {
-    return fast_mblock_chain_count(mblock, mblock->free_chain_head);
+    return fast_mblock_chain_count(mblock, mblock->freelist.head);
 }
 
 int fast_mblock_delay_free_count(struct fast_mblock_man *mblock)
@@ -1088,8 +1091,8 @@ static int fast_mblock_do_reclaim(struct fast_mblock_man *mblock,
     *reclaim_count = 0;
     freelist = NULL;
     free_chain_prev = NULL;
-	current = mblock->free_chain_head;
-    mblock->free_chain_head = NULL;
+	current = mblock->freelist.head;
+    mblock->freelist.head = NULL;
 	while (current != NULL)
 	{
         malloc_node = FAST_MBLOCK_GET_TRUNK(current);
@@ -1103,7 +1106,7 @@ static int fast_mblock_do_reclaim(struct fast_mblock_man *mblock,
             }
             else
             {
-                mblock->free_chain_head = current;
+                mblock->freelist.head = current;
             }
 
             free_chain_prev = current;
@@ -1160,7 +1163,6 @@ OUTER:
         free_chain_prev->next = NULL;
     }
 
-
     /*
     {
         bool old_need_lock;

src/fast_mblock.h

@@ -127,7 +127,11 @@ struct fast_mblock_man
         int64_t limit;         //<= 0 for no limit
         bool *pcontinue_flag;
     } alloc_elements;
-    struct fast_mblock_node *free_chain_head;    //free node chain
+
+    struct {
+        struct fast_mblock_node *head;
+    } freelist;    //free node chain
+
     struct fast_mblock_trunks trunks;
     struct fast_mblock_chain delay_free_chain;   //delay free node chain
 
@@ -407,7 +411,7 @@ return the delay free node count of the mblock, return -1 if fail
 */
 int fast_mblock_delay_free_count(struct fast_mblock_man *mblock);
 
-#define fast_mblock_total_count(mblock) (mblock)->total_count
+#define fast_mblock_total_count(mblock) (mblock)->info.element_total_count
 
 /**
 init mblock manager

src/fast_task_queue.c

@@ -59,11 +59,11 @@ static int task_alloc_init(struct fast_task_info *task,
 }
 
 int free_queue_init_ex2(struct fast_task_queue *queue, const char *name,
-        const bool double_buffers, const int max_connections,
-        const int alloc_task_once, const int min_buff_size,
-        const int max_buff_size, const int padding_size,
-        const int arg_size, TaskInitCallback init_callback,
-        void *init_arg)
+        const bool double_buffers, const bool need_shrink,
+        const int max_connections, const int alloc_task_once,
+        const int min_buff_size, const int max_buff_size,
+        const int padding_size, const int arg_size,
+        TaskInitCallback init_callback, void *init_arg)
 {
 #define MAX_DATA_SIZE  (256 * 1024 * 1024)
     int alloc_once;
@@ -123,6 +123,7 @@ int free_queue_init_ex2(struct fast_task_queue *queue, const char *name,
     }
 
     queue->double_buffers = double_buffers;
+    queue->need_shrink = need_shrink;
 	queue->min_buff_size = aligned_min_size;
 	queue->max_buff_size = aligned_max_size;
 	queue->padding_size = aligned_padding_size;
@@ -142,7 +143,7 @@ int free_queue_init_ex2(struct fast_task_queue *queue, const char *name,
         (int64_t)max_data_size);
         */
 
-    snprintf(aname, sizeof(aname), "%s-task", name);
+    fc_combine_two_strings(name, "task", '-', aname);
 	return fast_mblock_init_ex1(&queue->allocator, aname,
             queue->block_size, alloc_once, max_connections,
             (fast_mblock_object_init_func)task_alloc_init,
@@ -183,16 +184,23 @@ void free_queue_push(struct fast_task_info *task)
     task->send.ptr->length = 0;
     task->send.ptr->offset = 0;
     task->req_count = 0;
-    if (task->send.ptr->size > task->free_queue->min_buff_size) {//need thrink
-        _realloc_buffer(task->send.ptr, task->free_queue->min_buff_size, false);
+    if (task->free_queue->need_shrink && task->send.
+            ptr->size > task->free_queue->min_buff_size)
+    {   //need thrink
+        _realloc_buffer(task->send.ptr, task->free_queue->
+                min_buff_size, false);
+        task->shrinked = true;
     }
 
     if (task->free_queue->double_buffers) {
         task->recv.ptr->length = 0;
         task->recv.ptr->offset = 0;
-        if (task->recv.ptr->size > task->free_queue->min_buff_size) {
+        if (task->free_queue->need_shrink && task->recv.
+                ptr->size > task->free_queue->min_buff_size)
+        {
             _realloc_buffer(task->recv.ptr, task->free_queue->
                     min_buff_size, false);
+            task->shrinked = true;
         }
     }
 

src/fast_task_queue.h

@@ -37,21 +37,27 @@ struct nio_thread_data;
 struct fast_task_info;
 
 typedef int (*ThreadLoopCallback) (struct nio_thread_data *pThreadData);
-typedef int (*TaskFinishCallback) (struct fast_task_info *task);
 typedef void (*TaskCleanUpCallback) (struct fast_task_info *task);
 typedef int (*TaskInitCallback)(struct fast_task_info *task, void *arg);
 typedef void (*TaskReleaseCallback)(struct fast_task_info *task);
 
-typedef void (*IOEventCallback) (int sock, short event, void *arg);
+typedef void (*IOEventCallback) (int sock, const int event, void *arg);
 typedef int (*TaskContinueCallback)(struct fast_task_info *task);
 
 struct sf_network_handler;
 struct fast_task_info;
 
+#if IOEVENT_USE_URING
+#define FC_URING_OP_TYPE(task)     (task)->uring.op_type
+#define FC_URING_IS_CLIENT(task)   (task)->uring.is_client
+#define FC_URING_IS_SEND_ZC(task)  ((task)->uring.op_type == IORING_OP_SEND_ZC)
+#endif
+
 typedef struct ioevent_entry
 {
     FastTimerEntry timer; //must first
     int fd;
+    int res;  //just for io_uring, since v1.0.81
     IOEventCallback callback;
 } IOEventEntry;
 
@@ -119,12 +125,19 @@ struct fast_task_info
     struct fast_net_buffer_wrapper recv;  //recv buffer
 
     uint16_t port; //peer port
+
+    struct {
+        int8_t  is_client;
+        uint8_t op_type;
+    } uring;  //just for io_uring, since v1.0.81
+
     struct {
         uint8_t current;
         volatile uint8_t notify;
     } nio_stages; //stages for network IO
-    volatile int8_t reffer_count;
     volatile int8_t canceled;  //if task canceled
+    volatile int8_t shrinked;  //if task shrinked, since V1.0.81
+    volatile int reffer_count;
     int pending_send_count;
     int64_t req_count; //request count
     struct {
@@ -135,7 +148,6 @@ struct fast_task_info
         struct fc_list_head dlink;  //for polling queue
     } polling;  //for RDMA busy polling
     TaskContinueCallback continue_callback; //for continue stage
-    TaskFinishCallback finish_callback;
     struct nio_thread_data *thread_data;
     struct sf_network_handler *handler; //network handler for libserverframe nio
     struct fast_task_info *next;        //for free queue and deleted list
@@ -153,6 +165,7 @@ struct fast_task_queue
     int block_size;
     bool malloc_whole_block;
     bool double_buffers;  //if send buffer and recv buffer are independent
+    bool need_shrink;
     struct fast_mblock_man allocator;
     TaskInitCallback init_callback;
     void *init_arg;
@@ -164,22 +177,22 @@ extern "C" {
 #endif
 
 int free_queue_init_ex2(struct fast_task_queue *queue, const char *name,
-        const bool double_buffers, const int max_connections,
-        const int alloc_task_once, const int min_buff_size,
-        const int max_buff_size, const int padding_size,
-        const int arg_size, TaskInitCallback init_callback,
-        void *init_arg);
+        const bool double_buffers, const bool need_shrink,
+        const int max_connections, const int alloc_task_once,
+        const int min_buff_size, const int max_buff_size,
+        const int padding_size, const int arg_size,
+        TaskInitCallback init_callback, void *init_arg);
 
 static inline int free_queue_init_ex(struct fast_task_queue *queue,
         const char *name, const bool double_buffers,
-        const int max_connections, const int alloc_task_once,
-        const int min_buff_size, const int max_buff_size,
-        const int arg_size)
+        const bool need_shrink, const int max_connections,
+        const int alloc_task_once, const int min_buff_size,
+        const int max_buff_size, const int arg_size)
 {
     const int padding_size = 0;
-    return free_queue_init_ex2(queue, name, double_buffers, max_connections,
-            alloc_task_once, min_buff_size, max_buff_size, padding_size,
-            arg_size, NULL, NULL);
+    return free_queue_init_ex2(queue, name, double_buffers, need_shrink,
+            max_connections, alloc_task_once, min_buff_size, max_buff_size,
+            padding_size, arg_size, NULL, NULL);
 }
 
 static inline int free_queue_init(struct fast_task_queue *queue,
@@ -188,9 +201,11 @@ static inline int free_queue_init(struct fast_task_queue *queue,
 {
     const char *name = "";
     const bool double_buffers = false;
+    const bool need_shrink = true;
     const int arg_size = 0;
-    return free_queue_init_ex(queue, name, double_buffers, max_connections,
-            alloc_task_once, min_buff_size, max_buff_size, arg_size);
+    return free_queue_init_ex(queue, name, double_buffers,
+            need_shrink, max_connections, alloc_task_once,
+            min_buff_size, max_buff_size, arg_size);
 }
 
 static inline void free_queue_set_release_callback(

src/fast_timer.c

@@ -105,6 +105,7 @@ int fast_timer_modify(FastTimer *timer, FastTimerEntry *entry,
         if ((result=fast_timer_remove(timer, entry)) == 0) {
             fast_timer_add_ex(timer, entry, new_expires, true);
         }
+
         return result;
     }
     return 0;
@@ -185,6 +186,7 @@ int fast_timer_timeouts_get(FastTimer *timer, const int64_t current_time,
                     } else {
                         last->rehash = false;
                     }
+
                     continue;
                 }
             } else {  //expired

src/hash.c

@@ -777,14 +777,13 @@ int64_t fc_hash_inc_value(const HashData *old_data, const int inc,
 		{
 			n = inc;
 		}
-		*new_value_len = sprintf(new_value, "%"PRId64, n);
 	}
 	else
 	{
 		n = inc;
-		*new_value_len = sprintf(new_value, "%"PRId64, n);
 	}
 
+    *new_value_len = fc_itoa(n, new_value);
 	return n;
 }
 

src/ini_file_reader.c

@@ -198,7 +198,7 @@ static int iniAnnotationFuncLocalIpGet(IniContext *context,
                 (int)(square_start - param), param);
         index = atoi(square_start + 1);
     } else {
-        snprintf(name_part, sizeof(name_part) - 1, "%s", param);
+        fc_safe_strcpy(name_part, param);
         index = -2;
     }
 
@@ -322,7 +322,7 @@ static char *doReplaceVars(IniContext *pContext, const char *param,
         logWarning("file: "__FILE__", line: %d, "
                 "NO set directives before, set value to %s",
                 __LINE__, param);
-        snprintf(output, FAST_INI_ITEM_VALUE_SIZE, "%s", param);
+        fc_strlcpy(output, param, FAST_INI_ITEM_VALUE_SIZE);
         return output;
     }
 
@@ -652,7 +652,7 @@ int iniLoadFromFileEx(const char *szFilename, IniContext *pContext,
 	if (IS_URL_RESOURCE(szFilename))
 	{
 		*pContext->config_path = '\0';
-		snprintf(full_filename, sizeof(full_filename), "%s", szFilename);
+		fc_safe_strcpy(full_filename, szFilename);
 	}
 	else
 	{
@@ -675,8 +675,7 @@ int iniLoadFromFileEx(const char *szFilename, IniContext *pContext,
 
 			memcpy(pContext->config_path, szFilename, len);
 			*(pContext->config_path + len) = '\0';
-			snprintf(full_filename, sizeof(full_filename), \
-				"%s", szFilename);
+            fc_safe_strcpy(full_filename, szFilename);
 		}
 		else
 		{
@@ -699,9 +698,8 @@ int iniLoadFromFileEx(const char *szFilename, IniContext *pContext,
 				*(pContext->config_path + len) = '\0';
 			}
 
-			snprintf(full_filename, sizeof(full_filename), \
-				"%s/%s", pContext->config_path, szFilename);
-
+            fc_combine_full_filename(pContext->config_path,
+                    szFilename, full_filename);
 			pLast = strrchr(szFilename, '/');
 			if (pLast != NULL)
 			{
@@ -914,7 +912,7 @@ static int iniAddAnnotation(char *params)
         return EFAULT;
     }
 
-    snprintf(symbol, sizeof(symbol), "%s_init_annotation", func_name);
+    fc_combine_two_strings(func_name, "init_annotation", '_', symbol);
     init_func = dlsym(dlhandle, symbol);
     if (init_func == NULL)
     {
@@ -1013,13 +1011,11 @@ static int iniDoLoadItemsFromBuffer(char *content, IniContext *pContext)
 			strncasecmp(pLine+1, "include", 7) == 0 && \
 			(*(pLine+8) == ' ' || *(pLine+8) == '\t'))
 		{
-            snprintf(pIncludeFilename, sizeof(pIncludeFilename),
-                    "%s", pLine + 9);
+            fc_safe_strcpy(pIncludeFilename, pLine + 9);
 			fc_trim(pIncludeFilename);
 			if (IS_URL_RESOURCE(pIncludeFilename))
             {
-				snprintf(full_filename, sizeof(full_filename),
-					"%s", pIncludeFilename);
+                fc_safe_strcpy(full_filename, pIncludeFilename);
             }
 			else
 			{
@@ -1034,21 +1030,19 @@ static int iniDoLoadItemsFromBuffer(char *content, IniContext *pContext)
 
                 if (*pTrueFilename == '/')
 				{
-				snprintf(full_filename, sizeof(full_filename), \
-					"%s", pTrueFilename);
+                    fc_safe_strcpy(full_filename, pTrueFilename);
 				}
 				else
                 {
-				snprintf(full_filename, sizeof(full_filename), \
-					"%s/%s", pContext->config_path, \
-					 pTrueFilename);
+                    fc_combine_full_filename(pContext->config_path,
+                            pTrueFilename, full_filename);
                 }
 
 				if (!fileExists(full_filename))
                 {
-				logError("file: "__FILE__", line: %d, " \
-					"include file \"%s\" not exists, " \
-					"line: \"%s\"", __LINE__, \
+                    logError("file: "__FILE__", line: %d, "
+                            "include file \"%s\" not exists, "
+                            "line: \"%s\"", __LINE__,
                             pTrueFilename, pLine);
                     result = ENOENT;
                     break;
@@ -2629,8 +2623,7 @@ static char *iniProccessFor(char *content, const int content_len,
         char *pRemain;
         int remainLen;
 
-        valueLen = sprintf(value, "%d", i);
-
+        valueLen = fc_itoa(i, value);
         pRemain = pForBlock;
         remainLen = forBlockLen;
         while (remainLen >= tagLen)
@@ -2817,7 +2810,7 @@ do { \
         break;  \
     } \
     \
-    snprintf(targetItem.name, sizeof(targetItem.name), "%s", szItemName); \
+    fc_safe_strcpy(targetItem.name, szItemName); \
     pItem = (IniItem *)bsearch(&targetItem, pSection->items, \
             pSection->count, sizeof(IniItem), iniCompareByItemName); \
 } while (0)

src/ioevent.c

@@ -45,23 +45,41 @@ int kqueue_ev_convert(int16_t event, uint16_t flags)
 }
 #endif
 
-int ioevent_init(IOEventPoller *ioevent, const int size,
-    const int timeout_ms, const int extra_events)
+int ioevent_init(IOEventPoller *ioevent, const char *service_name,
+        const bool use_io_uring, const int size, const int timeout_ms,
+        const int extra_events)
 {
     int bytes;
 
-  ioevent->size = size;
-  ioevent->extra_events = extra_events;
     ioevent->iterator.index = 0;
     ioevent->iterator.count = 0;
+    ioevent->service_name = service_name;
+    ioevent->size = size;
+    ioevent->extra_events = extra_events;
 
-#if IOEVENT_USE_EPOLL
+#ifdef OS_LINUX
+#if IOEVENT_USE_URING
+    ioevent->use_io_uring = use_io_uring;
+    if (use_io_uring) {
+        int result;
+        if ((result=io_uring_queue_init(size, &ioevent->ring, 0)) < 0) {
+            return -result;
+        }
+        ioevent->cqe = NULL;
+        ioevent->submit_count = 0;
+        ioevent->send_zc_logged = false;
+        ioevent->send_zc_done_notify = false;
+    } else {
+#endif
         ioevent->poll_fd = epoll_create(ioevent->size);
         if (ioevent->poll_fd < 0) {
             return errno != 0 ? errno : ENOMEM;
         }
         bytes = sizeof(struct epoll_event) * size;
         ioevent->events = (struct epoll_event *)fc_malloc(bytes);
+#if IOEVENT_USE_URING
+    }
+#endif
 #elif IOEVENT_USE_KQUEUE
     ioevent->poll_fd = kqueue();
     if (ioevent->poll_fd < 0) {
@@ -78,18 +96,29 @@ int ioevent_init(IOEventPoller *ioevent, const int size,
     ioevent->events = (port_event_t *)fc_malloc(bytes);
 #endif
 
+#if IOEVENT_USE_URING
+    if (!ioevent->use_io_uring) {
+#endif
         if (ioevent->events == NULL) {
             close(ioevent->poll_fd);
             ioevent->poll_fd = -1;
             return ENOMEM;
         }
-  ioevent_set_timeout(ioevent, timeout_ms);
+#if IOEVENT_USE_URING
+    }
+#endif
 
+    ioevent_set_timeout(ioevent, timeout_ms);
     return 0;
 }
 
 void ioevent_destroy(IOEventPoller *ioevent)
 {
+#if IOEVENT_USE_URING
+    if (ioevent->use_io_uring) {
+        io_uring_queue_exit(&ioevent->ring);
+    } else {
+#endif
         if (ioevent->events != NULL) {
             free(ioevent->events);
             ioevent->events = NULL;
@@ -99,17 +128,36 @@ void ioevent_destroy(IOEventPoller *ioevent)
             close(ioevent->poll_fd);
             ioevent->poll_fd = -1;
         }
+#if IOEVENT_USE_URING
+    }
+#endif
 }
 
-int ioevent_attach(IOEventPoller *ioevent, const int fd, const int e,
-    void *data)
+int ioevent_attach(IOEventPoller *ioevent, const int fd,
+        const int e, void *data)
 {
-#if IOEVENT_USE_EPOLL
+#ifdef OS_LINUX
+#if IOEVENT_USE_URING
+    if (ioevent->use_io_uring) {
+        struct io_uring_sqe *sqe = io_uring_get_sqe(&ioevent->ring);
+        if (sqe == NULL) {
+            return ENOSPC;
+        }
+        io_uring_prep_poll_multishot(sqe, fd, e | ioevent->extra_events);
+        sqe->user_data = (long)data;
+        ioevent->submit_count++;
+        return 0;
+    } else {
+#endif
         struct epoll_event ev;
         memset(&ev, 0, sizeof(ev));
         ev.events = e | ioevent->extra_events;
         ev.data.ptr = data;
         return epoll_ctl(ioevent->poll_fd, EPOLL_CTL_ADD, fd, &ev);
+#if IOEVENT_USE_URING
+    }
+#endif
+
 #elif IOEVENT_USE_KQUEUE
   struct kevent ev[2];
   int n = 0;
@@ -128,15 +176,32 @@ int ioevent_attach(IOEventPoller *ioevent, const int fd, const int e,
 #endif
 }
 
-int ioevent_modify(IOEventPoller *ioevent, const int fd, const int e,
-    void *data)
+int ioevent_modify(IOEventPoller *ioevent, const int fd,
+        const int e, void *data)
 {
-#if IOEVENT_USE_EPOLL
+#ifdef OS_LINUX
+#if IOEVENT_USE_URING
+    if (ioevent->use_io_uring) {
+        struct io_uring_sqe *sqe = io_uring_get_sqe(&ioevent->ring);
+        if (sqe == NULL) {
+            return ENOSPC;
+        }
+        io_uring_prep_poll_update(sqe, sqe->user_data, sqe->user_data,
+                e | ioevent->extra_events, IORING_POLL_UPDATE_EVENTS);
+        sqe->user_data = (long)data;
+        ioevent->submit_count++;
+        return 0;
+    } else {
+#endif
         struct epoll_event ev;
         memset(&ev, 0, sizeof(ev));
         ev.events = e | ioevent->extra_events;
         ev.data.ptr = data;
         return epoll_ctl(ioevent->poll_fd, EPOLL_CTL_MOD, fd, &ev);
+#if IOEVENT_USE_URING
+    }
+#endif
+
 #elif IOEVENT_USE_KQUEUE
   struct kevent ev[2];
   int result;
@@ -171,8 +236,25 @@ int ioevent_modify(IOEventPoller *ioevent, const int fd, const int e,
 
 int ioevent_detach(IOEventPoller *ioevent, const int fd)
 {
-#if IOEVENT_USE_EPOLL
+#ifdef OS_LINUX
+#if IOEVENT_USE_URING
+    if (ioevent->use_io_uring) {
+        struct io_uring_sqe *sqe = io_uring_get_sqe(&ioevent->ring);
+        if (sqe == NULL) {
+            return ENOSPC;
+        }
+        io_uring_prep_cancel_fd(sqe, fd, 0);
+        /* set sqe->flags MUST after io_uring_prep_xxx */
+        sqe->flags = IOSQE_CQE_SKIP_SUCCESS;
+        ioevent->submit_count++;
+        return 0;
+    } else {
+#endif
         return epoll_ctl(ioevent->poll_fd, EPOLL_CTL_DEL, fd, NULL);
+#if IOEVENT_USE_URING
+    }
+#endif
+
 #elif IOEVENT_USE_KQUEUE
   struct kevent ev[1];
   int r, w;
@@ -191,15 +273,33 @@ int ioevent_detach(IOEventPoller *ioevent, const int fd)
 
 int ioevent_poll(IOEventPoller *ioevent)
 {
-#if IOEVENT_USE_EPOLL
-  return epoll_wait(ioevent->poll_fd, ioevent->events, ioevent->size, ioevent->timeout);
+#ifdef OS_LINUX
+#if IOEVENT_USE_URING
+    if (ioevent->use_io_uring) {
+        int result;
+        result = io_uring_wait_cqe_timeout(&ioevent->ring,
+                &ioevent->cqe, &ioevent->timeout);
+        if (result < 0) {
+            errno = -result;
+            return -1;
+        }
+        return 0;
+    } else {
+#endif
+        return epoll_wait(ioevent->poll_fd, ioevent->events,
+                ioevent->size, ioevent->timeout_ms);
+#if IOEVENT_USE_URING
+    }
+#endif
+
 #elif IOEVENT_USE_KQUEUE
-  return kevent(ioevent->poll_fd, NULL, 0, ioevent->events, ioevent->size, &ioevent->timeout);
+  return kevent(ioevent->poll_fd, NULL, 0, ioevent->events,
+          ioevent->size, &ioevent->timeout);
 #elif IOEVENT_USE_PORT
   int result;
   int retval;
   unsigned int nget = 1;
-  if((retval = port_getn(ioevent->poll_fd, ioevent->events,
+  if((retval=port_getn(ioevent->poll_fd, ioevent->events,
           ioevent->size, &nget, &ioevent->timeout)) == 0)
   {
     result = (int)nget;
@@ -225,4 +325,3 @@ int ioevent_poll(IOEventPoller *ioevent)
 #error port me
 #endif
 }
-

src/ioevent.h

@@ -20,17 +20,28 @@
 #include <poll.h>
 #include <sys/time.h>
 #include "_os_define.h"
+#include "logger.h"
 
-#define IOEVENT_TIMEOUT  0x8000
+#define IOEVENT_TIMEOUT  (1 << 20)
+#define IOEVENT_NOTIFY   (1 << 21)  //for io_uring send_zc done callback
 
-#if IOEVENT_USE_EPOLL
+#ifdef OS_LINUX
 #include <sys/epoll.h>
 #define IOEVENT_EDGE_TRIGGER EPOLLET
+#endif
 
+#if IOEVENT_USE_EPOLL
 #define IOEVENT_READ  EPOLLIN
 #define IOEVENT_WRITE EPOLLOUT
 #define IOEVENT_ERROR (EPOLLERR | EPOLLPRI | EPOLLHUP)
 
+#elif IOEVENT_USE_URING
+#include <sys/mount.h>
+#include <liburing.h>
+#define IOEVENT_READ  POLLIN
+#define IOEVENT_WRITE POLLOUT
+#define IOEVENT_ERROR (POLLERR | POLLPRI | POLLHUP)
+
 #elif IOEVENT_USE_KQUEUE
 #include <sys/event.h>
 #include <sys/poll.h>
@@ -65,18 +76,33 @@ int kqueue_ev_convert(int16_t event, uint16_t flags);
 #endif
 
 typedef struct ioevent_puller {
+    const char *service_name;
     int size;  //max events (fd)
     int extra_events;
-    int poll_fd;
 
+#if IOEVENT_USE_URING
+    struct io_uring ring;
+    int submit_count;
+    bool send_zc_logged;
+    bool send_zc_done_notify; //if callback when send_zc done
+    bool use_io_uring;
+#endif
+
+    int poll_fd;
     struct {
         int index;
         int count;
     } iterator;  //for deal event loop
 
-#if IOEVENT_USE_EPOLL
+#ifdef OS_LINUX
     struct epoll_event *events;
-    int timeout;
+    int timeout_ms;   //for epoll
+#if IOEVENT_USE_URING
+    struct io_uring_cqe *cqe;
+    struct __kernel_timespec timeout;
+#endif
+    bool zero_timeout;
+
 #elif IOEVENT_USE_KQUEUE
     struct kevent *events;
     struct timespec timeout;
@@ -84,9 +110,10 @@ typedef struct ioevent_puller {
     port_event_t *events;
     timespec_t timeout;
 #endif
+
 } IOEventPoller;
 
-#if IOEVENT_USE_EPOLL
+#if OS_LINUX
   #define IOEVENT_GET_EVENTS(ioevent, index) \
       (ioevent)->events[index].events
 #elif IOEVENT_USE_KQUEUE
@@ -99,7 +126,7 @@ typedef struct ioevent_puller {
 #error port me
 #endif
 
-#if IOEVENT_USE_EPOLL
+#ifdef OS_LINUX
   #define IOEVENT_GET_DATA(ioevent, index)  \
       (ioevent)->events[index].data.ptr
 #elif IOEVENT_USE_KQUEUE
@@ -112,7 +139,7 @@ typedef struct ioevent_puller {
 #error port me
 #endif
 
-#if IOEVENT_USE_EPOLL
+#ifdef OS_LINUX
   #define IOEVENT_CLEAR_DATA(ioevent, index)  \
       (ioevent)->events[index].data.ptr = NULL
 #elif IOEVENT_USE_KQUEUE
@@ -129,24 +156,39 @@ typedef struct ioevent_puller {
 extern "C" {
 #endif
 
-int ioevent_init(IOEventPoller *ioevent, const int size,
-    const int timeout_ms, const int extra_events);
+int ioevent_init(IOEventPoller *ioevent, const char *service_name,
+        const bool use_io_uring, const int size, const int timeout_ms,
+        const int extra_events);
 void ioevent_destroy(IOEventPoller *ioevent);
 
-int ioevent_attach(IOEventPoller *ioevent, const int fd, const int e,
-    void *data);
-int ioevent_modify(IOEventPoller *ioevent, const int fd, const int e,
-    void *data);
+int ioevent_attach(IOEventPoller *ioevent, const int fd,
+        const int e, void *data);
+int ioevent_modify(IOEventPoller *ioevent, const int fd,
+        const int e, void *data);
 int ioevent_detach(IOEventPoller *ioevent, const int fd);
 int ioevent_poll(IOEventPoller *ioevent);
 
-static inline void ioevent_set_timeout(IOEventPoller *ioevent, const int timeout_ms)
+static inline void ioevent_set_timeout(IOEventPoller *ioevent,
+        const int timeout_ms)
 {
 #if IOEVENT_USE_EPOLL
-  ioevent->timeout = timeout_ms;
+    ioevent->timeout_ms = timeout_ms;
 #else
+#if IOEVENT_USE_URING
+    if (!ioevent->use_io_uring) {
+        ioevent->timeout_ms = timeout_ms;
+    } else {
+#endif
         ioevent->timeout.tv_sec = timeout_ms / 1000;
         ioevent->timeout.tv_nsec = 1000000 * (timeout_ms % 1000);
+
+#if IOEVENT_USE_URING
+    }
+#endif
+#endif
+
+#ifdef OS_LINUX
+    ioevent->zero_timeout = (timeout_ms == 0);
 #endif
 }
 
@@ -156,6 +198,114 @@ static inline int ioevent_poll_ex(IOEventPoller *ioevent, const int timeout_ms)
   return ioevent_poll(ioevent);
 }
 
+#if IOEVENT_USE_URING
+static inline void ioevent_set_send_zc_done_notify(
+        IOEventPoller *ioevent, const bool need_notify)
+{
+    ioevent->send_zc_done_notify = need_notify;
+}
+
+static inline int ioevent_uring_submit(IOEventPoller *ioevent)
+{
+    int result;
+
+    ioevent->submit_count = 0;
+    while (1) {
+        result = io_uring_submit(&ioevent->ring);
+        if (result < 0) {
+            if (result != -EINTR) {
+                return -result;
+            }
+        } else {
+            return 0;
+        }
+    }
+}
+
+static inline struct io_uring_sqe *ioevent_uring_get_sqe(IOEventPoller *ioevent)
+{
+    struct io_uring_sqe *sqe = io_uring_get_sqe(&ioevent->ring);
+    if (sqe == NULL) {
+        logError("file: "__FILE__", line: %d, "
+                "io_uring_get_sqe fail", __LINE__);
+    }
+    return sqe;
+}
+
+static inline void ioevent_uring_prep_recv(IOEventPoller *ioevent,
+        struct io_uring_sqe *sqe, int sockfd,
+        void *buf, size_t size, void *user_data)
+{
+    io_uring_prep_recv(sqe, sockfd, buf, size, 0);
+    sqe->user_data = (long)user_data;
+    ioevent->submit_count++;
+}
+
+static inline void ioevent_uring_prep_send(IOEventPoller *ioevent,
+        struct io_uring_sqe *sqe, int sockfd,
+        void *buf, size_t len, void *user_data)
+{
+    io_uring_prep_send(sqe, sockfd, buf, len, 0);
+    sqe->user_data = (long)user_data;
+    ioevent->submit_count++;
+}
+
+static inline void ioevent_uring_prep_writev(IOEventPoller *ioevent,
+        struct io_uring_sqe *sqe, int sockfd, const struct iovec *iovecs,
+        unsigned nr_vecs, void *user_data)
+{
+    io_uring_prep_writev(sqe, sockfd, iovecs, nr_vecs, 0);
+    sqe->user_data = (long)user_data;
+    ioevent->submit_count++;
+}
+
+static inline void ioevent_uring_prep_send_zc(IOEventPoller *ioevent,
+        struct io_uring_sqe *sqe, int sockfd,
+        void *buf, size_t len, void *user_data)
+{
+    io_uring_prep_send_zc(sqe, sockfd, buf, len, 0,
+#ifdef IORING_SEND_ZC_REPORT_USAGE
+            IORING_SEND_ZC_REPORT_USAGE
+#else
+            0
+#endif
+            );
+    sqe->user_data = (long)user_data;
+    ioevent->submit_count++;
+}
+
+static inline void ioevent_uring_prep_close(IOEventPoller *ioevent,
+        struct io_uring_sqe *sqe, int fd, void *user_data)
+{
+    io_uring_prep_close(sqe, fd);
+    if (user_data == NULL) {
+        /* set sqe->flags MUST after io_uring_prep_xxx */
+        sqe->flags = IOSQE_CQE_SKIP_SUCCESS;
+    } else {
+        sqe->user_data = (long)user_data;
+    }
+    ioevent->submit_count++;
+}
+
+static inline void ioevent_uring_prep_cancel(IOEventPoller *ioevent,
+        struct io_uring_sqe *sqe, void *user_data)
+{
+    io_uring_prep_cancel(sqe, user_data, 0);
+    sqe->user_data = (long)user_data;
+    ioevent->submit_count++;
+}
+
+static inline void ioevent_uring_prep_connect(IOEventPoller *ioevent,
+        struct io_uring_sqe *sqe, int fd, const struct sockaddr *addr,
+        socklen_t addrlen, void *user_data)
+{
+    io_uring_prep_connect(sqe, fd, addr, addrlen);
+    sqe->user_data = (long)user_data;
+    ioevent->submit_count++;
+}
+
+#endif
+
 #ifdef __cplusplus
 }
 #endif

src/ioevent_loop.c

@@ -17,6 +17,76 @@
 #include "logger.h"
 #include "ioevent_loop.h"
 
+#if IOEVENT_USE_URING
+static int ioevent_process_by_uring(IOEventPoller *ioevent)
+{
+    int result;
+    unsigned head;
+    unsigned count = 0;
+	IOEventEntry *pEntry;
+
+    result = io_uring_wait_cqe_timeout(&ioevent->ring,
+            &ioevent->cqe, &ioevent->timeout);
+    switch (result) {
+        case 0:
+            break;
+        case -ETIME:
+        case -EINTR:
+            return 0;
+        default:
+            result *= -1;
+            logError("file: "__FILE__", line: %d, "
+                    "io_uring_wait_cqe fail, errno: %d, error info: %s",
+                    __LINE__, result, STRERROR(result));
+            return result;
+    }
+
+    io_uring_for_each_cqe(&ioevent->ring, head, ioevent->cqe) {
+        count++;
+        pEntry = (IOEventEntry *)ioevent->cqe->user_data;
+        if (pEntry != NULL) {
+            if (ioevent->cqe->flags & IORING_CQE_F_NOTIF) {
+                if (ioevent->send_zc_done_notify) {
+                    pEntry->callback(pEntry->fd, IOEVENT_NOTIFY, pEntry);
+                }
+
+#ifdef IORING_NOTIF_USAGE_ZC_COPIED
+                if (!ioevent->send_zc_logged) {
+                    struct fast_task_info *task;
+
+                    task = (struct fast_task_info *)pEntry;
+                    ioevent->send_zc_logged = true;
+                    if (ioevent->cqe->res & IORING_NOTIF_USAGE_ZC_COPIED) {
+                        logWarning("file: "__FILE__", line: %d, %s "
+                                "client %s:%u, io_uring send_zc: memory "
+                                "copy instead of zero copy!", __LINE__,
+                                ioevent->service_name, task->client_ip,
+                                task->port);
+                    } else {
+                        logInfo("file: "__FILE__", line: %d, %s "
+                                "client %s:%u, io_uring send_zc: zero "
+                                "copy OK.", __LINE__, ioevent->service_name,
+                                task->client_ip, task->port);
+                    }
+                }
+#endif
+            } else {
+                pEntry->res = ioevent->cqe->res;
+                pEntry->callback(pEntry->fd, 0, pEntry);
+            }
+        } else {
+            logWarning("file: "__FILE__", line: %d, "
+                    "io_uring unexpected flags: %d, result: %d", __LINE__,
+                    ioevent->cqe->flags, ioevent->cqe->res);
+        }
+    }
+
+    io_uring_cq_advance(&ioevent->ring, count);
+    return 0;
+}
+
+#endif
+
 static void deal_ioevents(IOEventPoller *ioevent)
 {
 	int event;
@@ -39,35 +109,25 @@ static void deal_ioevents(IOEventPoller *ioevent)
 	}
 }
 
-int ioevent_remove(IOEventPoller *ioevent, void *data)
+static int ioevent_process_by_poll(IOEventPoller *ioevent)
 {
-	IOEventEntry *pEntry;
-    int index;
+    int result;
 
-    if (ioevent->iterator.index >= ioevent->iterator.count)
-    {
-        return ENOENT;
+    ioevent->iterator.count = ioevent_poll(ioevent);
+    if (ioevent->iterator.count > 0) {
+        deal_ioevents(ioevent);
+    }
+    else if (ioevent->iterator.count < 0) {
+        result = errno != 0 ? errno : EINVAL;
+        if (result != EINTR) {
+            logError("file: "__FILE__", line: %d, "
+                    "ioevent_poll fail, errno: %d, error info: %s",
+                    __LINE__, result, STRERROR(result));
+            return result;
+        }
     }
 
-    pEntry = (IOEventEntry *)IOEVENT_GET_DATA(ioevent,
-            ioevent->iterator.index);
-    if (pEntry != NULL && (void *)pEntry == data) {
-        return 0;  //do NOT clear current entry
-    }
-
-    for (index=ioevent->iterator.index + 1; index < ioevent->iterator.count;
-            index++)
-    {
-        pEntry = (IOEventEntry *)IOEVENT_GET_DATA(ioevent, index);
-        if (pEntry != NULL && (void *)pEntry == data) {
-            logDebug("file: "__FILE__", line: %d, "
-                    "clear ioevent data: %p", __LINE__, data);
-            IOEVENT_CLEAR_DATA(ioevent, index);
     return 0;
-        }
-    }
-
-    return ENOENT;
 }
 
 static void deal_timeouts(FastTimerEntry *head)
@@ -82,13 +142,11 @@ static void deal_timeouts(FastTimerEntry *head)
 		current = entry;
 		entry = entry->next;
 
-        current->prev = current->next = NULL; //must set NULL because NOT in time wheel
+        /* must set NULL because NOT in time wheel */
+        current->prev = current->next = NULL;
 		pEventEntry = (IOEventEntry *)current;
-		if (pEventEntry != NULL)
-		{
         pEventEntry->callback(pEventEntry->fd, IOEVENT_TIMEOUT, current);
 	}
-	}
 }
 
 int ioevent_loop(struct nio_thread_data *thread_data,
@@ -131,10 +189,9 @@ int ioevent_loop(struct nio_thread_data *thread_data,
 
     thread_data->deleted_list = NULL;
 	last_check_time = g_current_time;
-	while (*continue_flag)
-	{
+	while (*continue_flag) {
 #ifdef OS_LINUX
-        if (thread_data->ev_puller.timeout == 0) {
+        if (thread_data->ev_puller.zero_timeout) {
             sched_pull = (sched_counter++ & 8) != 0;
         } else {
             sched_pull = true;
@@ -143,43 +200,52 @@ int ioevent_loop(struct nio_thread_data *thread_data,
         sched_pull = true;
 #endif
 
-        if (sched_pull)
+#if IOEVENT_USE_URING
+        if (thread_data->ev_puller.use_io_uring) {
+            if (thread_data->ev_puller.submit_count > 0) {
+                if ((result=ioevent_uring_submit(&thread_data->
+                                ev_puller)) != 0)
                 {
-            thread_data->ev_puller.iterator.count = ioevent_poll(
-                    &thread_data->ev_puller);
-            if (thread_data->ev_puller.iterator.count > 0)
-            {
-                deal_ioevents(&thread_data->ev_puller);
-            }
-            else if (thread_data->ev_puller.iterator.count < 0)
-            {
-                result = errno != 0 ? errno : EINVAL;
-                if (result != EINTR)
-                {
-                    logError("file: "__FILE__", line: %d, " \
-                            "ioevent_poll fail, " \
-                            "errno: %d, error info: %s", \
+                    logError("file: "__FILE__", line: %d, "
+                            "io_uring_submit fail, errno: %d, error info: %s",
                             __LINE__, result, STRERROR(result));
                     return result;
                 }
             }
         }
+#endif
 
-        if (thread_data->busy_polling_callback != NULL)
+        if (sched_pull) {
+#if IOEVENT_USE_URING
+            if (thread_data->ev_puller.use_io_uring) {
+                if ((result=ioevent_process_by_uring(&thread_data->
+                                ev_puller)) != 0)
                 {
+                    return result;
+                }
+            } else {
+#endif
+                if ((result=ioevent_process_by_poll(&thread_data->
+                                ev_puller)) != 0)
+                {
+                    return result;
+                }
+#if IOEVENT_USE_URING
+            }
+#endif
+        }
+
+        if (thread_data->busy_polling_callback != NULL) {
             thread_data->busy_polling_callback(thread_data);
         }
 
-		if (thread_data->deleted_list != NULL)
-		{
-			count = 0;
-			while (thread_data->deleted_list != NULL)
-			{
+		if (thread_data->deleted_list != NULL) {
+			//count = 0;
+			while (thread_data->deleted_list != NULL) {
 				task = thread_data->deleted_list;
 				thread_data->deleted_list = task->next;
 
-                if (task->polling.in_queue)
-                {
+                if (task->polling.in_queue) {
                     fc_list_del_init(&task->polling.dlink);
                     task->polling.in_queue = false;
                     if (fc_list_empty(&task->thread_data->polling_queue)) {
@@ -188,13 +254,12 @@ int ioevent_loop(struct nio_thread_data *thread_data,
                     }
                 }
 				clean_up_callback(task);
-				count++;
+				//count++;
 			}
 			//logInfo("cleanup task count: %d", count);
 		}
 
-		if (g_current_time - last_check_time > 0)
-		{
+		if (g_current_time - last_check_time > 0) {
 			last_check_time = g_current_time;
 			count = fast_timer_timeouts_get(
 				&thread_data->timer, g_current_time, &head);
@@ -204,8 +269,7 @@ int ioevent_loop(struct nio_thread_data *thread_data,
 			}
 		}
 
-        if (thread_data->notify.enabled)
-        {
+        if (thread_data->notify.enabled) {
             int64_t n;
             if ((n=__sync_fetch_and_add(&thread_data->notify.counter, 0)) != 0)
             {
@@ -219,8 +283,7 @@ int ioevent_loop(struct nio_thread_data *thread_data,
             }
         }
 
-        if (thread_data->thread_loop_callback != NULL)
-        {
+        if (thread_data->thread_loop_callback != NULL) {
             thread_data->thread_loop_callback(thread_data);
         }
 	}
@@ -229,15 +292,36 @@ int ioevent_loop(struct nio_thread_data *thread_data,
 }
 
 int ioevent_set(struct fast_task_info *task, struct nio_thread_data *pThread,
-	int sock, short event, IOEventCallback callback, const int timeout)
+        int sock, short event, IOEventCallback callback,
+        const int timeout)
 {
 	int result;
 
 	task->thread_data = pThread;
 	task->event.fd = sock;
 	task->event.callback = callback;
-	if (ioevent_attach(&pThread->ev_puller, sock, event, task) < 0)
-	{
+#if IOEVENT_USE_URING
+    if (pThread->ev_puller.use_io_uring) {
+        if (FC_URING_OP_TYPE(task) == IORING_OP_NOP) {
+            if ((result=uring_prep_first_recv(task)) != 0) {
+                logError("file: "__FILE__", line: %d, "
+                        "uring_prep_recv fail, fd: %d, "
+                        "errno: %d, error info: %s",
+                        __LINE__, sock, result, STRERROR(result));
+                return result;
+            }
+        } else {
+            /*
+            logWarning("file: "__FILE__", line: %d, "
+                    "skip uring_prep_recv, fd: %d, port: %d, "
+                    "in progress op type: %d, timeout: %"PRId64,
+                    __LINE__, sock, task->port, FC_URING_OP_TYPE(task),
+                    task->event.timer.expires);
+                    */
+        }
+    } else {
+#endif
+        if (ioevent_attach(&pThread->ev_puller, sock, event, task) < 0) {
             result = errno != 0 ? errno : ENOENT;
             logError("file: "__FILE__", line: %d, "
                     "ioevent_attach fail, fd: %d, "
@@ -245,6 +329,9 @@ int ioevent_set(struct fast_task_info *task, struct nio_thread_data *pThread,
                     __LINE__, sock, result, STRERROR(result));
             return result;
         }
+#if IOEVENT_USE_URING
+    }
+#endif
 
 	task->event.timer.expires = g_current_time + timeout;
 	fast_timer_add(&pThread->timer, &task->event.timer);

src/ioevent_loop.h

@@ -17,6 +17,14 @@
 #define _IOEVENT_LOOP_H
 
 #include "fast_task_queue.h"
+#if IOEVENT_USE_URING
+#include "sockopt.h"
+#endif
+
+#define fc_hold_task_ex(task, inc_count) __sync_add_and_fetch( \
+        &task->reffer_count, inc_count)
+
+#define fc_hold_task(task)  fc_hold_task_ex(task, 1)
 
 #ifdef __cplusplus
 extern "C" {
@@ -26,11 +34,9 @@ int ioevent_loop(struct nio_thread_data *thread_data,
 	IOEventCallback recv_notify_callback, TaskCleanUpCallback
 	clean_up_callback, volatile bool *continue_flag);
 
-//remove entry from ready list
-int ioevent_remove(IOEventPoller *ioevent, void *data);
-
-int ioevent_set(struct fast_task_info *pTask, struct nio_thread_data *pThread,
-	int sock, short event, IOEventCallback callback, const int timeout);
+int ioevent_set(struct fast_task_info *task, struct nio_thread_data *pThread,
+        int sock, short event, IOEventCallback callback,
+        const int timeout);
 
 int ioevent_reset(struct fast_task_info *task, int new_fd, short event);
 
@@ -75,9 +81,170 @@ static inline int ioevent_notify_thread(struct nio_thread_data *thread_data)
     return 0;
 }
 
+#if IOEVENT_USE_URING
+
+#define SET_OP_TYPE_AND_HOLD_TASK(task, _op_type) \
+    struct io_uring_sqe *sqe; \
+    if ((sqe=ioevent_uring_get_sqe(&task->thread_data->ev_puller)) == NULL) { \
+        return ENOSPC; \
+    } \
+    FC_URING_OP_TYPE(task) = _op_type; \
+    fc_hold_task(task)
+
+static inline int uring_prep_recv_data(struct fast_task_info *task,
+        char *buff, const int len)
+{
+    SET_OP_TYPE_AND_HOLD_TASK(task, IORING_OP_RECV);
+    ioevent_uring_prep_recv(&task->thread_data->ev_puller,
+            sqe, task->event.fd, buff, len, task);
+    return 0;
+}
+
+static inline int uring_prep_first_recv(struct fast_task_info *task)
+{
+    SET_OP_TYPE_AND_HOLD_TASK(task, IORING_OP_RECV);
+    ioevent_uring_prep_recv(&task->thread_data->ev_puller,
+            sqe, task->event.fd, task->recv.ptr->data,
+            task->recv.ptr->size, task);
+    return 0;
+}
+
+static inline int uring_prep_next_recv(struct fast_task_info *task)
+{
+    SET_OP_TYPE_AND_HOLD_TASK(task, IORING_OP_RECV);
+    ioevent_uring_prep_recv(&task->thread_data->ev_puller, sqe,
+            task->event.fd, task->recv.ptr->data + task->recv.ptr->offset,
+            task->recv.ptr->length - task->recv.ptr->offset, task);
+    return 0;
+}
+
+static inline int uring_prep_first_send(struct fast_task_info *task)
+{
+    if (task->iovec_array.iovs != NULL) {
+        SET_OP_TYPE_AND_HOLD_TASK(task, IORING_OP_WRITEV);
+        ioevent_uring_prep_writev(&task->thread_data->ev_puller,
+                sqe, task->event.fd, task->iovec_array.iovs,
+                FC_MIN(task->iovec_array.count, IOV_MAX),
+                task);
+    } else {
+        SET_OP_TYPE_AND_HOLD_TASK(task, IORING_OP_SEND);
+        ioevent_uring_prep_send(&task->thread_data->ev_puller,
+                sqe, task->event.fd, task->send.ptr->data,
+                task->send.ptr->length, task);
+    }
+    return 0;
+}
+
+static inline int uring_prep_next_send(struct fast_task_info *task)
+{
+    if (task->iovec_array.iovs != NULL) {
+        SET_OP_TYPE_AND_HOLD_TASK(task, IORING_OP_WRITEV);
+        ioevent_uring_prep_writev(&task->thread_data->ev_puller,
+                sqe, task->event.fd, task->iovec_array.iovs,
+                FC_MIN(task->iovec_array.count, IOV_MAX),
+                task);
+    } else {
+        SET_OP_TYPE_AND_HOLD_TASK(task, IORING_OP_SEND);
+        ioevent_uring_prep_send(&task->thread_data->ev_puller, sqe,
+                task->event.fd, task->send.ptr->data + task->send.ptr->offset,
+                task->send.ptr->length - task->send.ptr->offset, task);
+    }
+    return 0;
+}
+
+static inline int uring_prep_first_send_zc(struct fast_task_info *task)
+{
+    if (task->iovec_array.iovs != NULL) {
+        SET_OP_TYPE_AND_HOLD_TASK(task, IORING_OP_WRITEV);
+        ioevent_uring_prep_writev(&task->thread_data->ev_puller,
+                sqe, task->event.fd, task->iovec_array.iovs,
+                FC_MIN(task->iovec_array.count, IOV_MAX),
+                task);
+    } else if (task->send.ptr->length < 4096) {
+        SET_OP_TYPE_AND_HOLD_TASK(task, IORING_OP_SEND);
+        ioevent_uring_prep_send(&task->thread_data->ev_puller,
+                sqe, task->event.fd, task->send.ptr->data,
+                task->send.ptr->length, task);
+    } else {
+        SET_OP_TYPE_AND_HOLD_TASK(task, IORING_OP_SEND_ZC);
+        ioevent_uring_prep_send_zc(&task->thread_data->ev_puller,
+                sqe, task->event.fd, task->send.ptr->data,
+                task->send.ptr->length, task);
+    }
+    return 0;
+}
+
+static inline int uring_prep_next_send_zc(struct fast_task_info *task)
+{
+    if (task->iovec_array.iovs != NULL) {
+        SET_OP_TYPE_AND_HOLD_TASK(task, IORING_OP_WRITEV);
+        ioevent_uring_prep_writev(&task->thread_data->ev_puller,
+                sqe, task->event.fd, task->iovec_array.iovs,
+                FC_MIN(task->iovec_array.count, IOV_MAX),
+                task);
+    } else if (task->send.ptr->length - task->send.ptr->offset < 4096) {
+        SET_OP_TYPE_AND_HOLD_TASK(task, IORING_OP_SEND);
+        ioevent_uring_prep_send(&task->thread_data->ev_puller, sqe,
+                task->event.fd, task->send.ptr->data + task->send.ptr->offset,
+                task->send.ptr->length - task->send.ptr->offset, task);
+    } else {
+        SET_OP_TYPE_AND_HOLD_TASK(task, IORING_OP_SEND_ZC);
+        ioevent_uring_prep_send_zc(&task->thread_data->ev_puller, sqe,
+                task->event.fd, task->send.ptr->data + task->send.ptr->offset,
+                task->send.ptr->length - task->send.ptr->offset, task);
+    }
+    return 0;
+}
+
+static inline int uring_prep_close_fd(struct fast_task_info *task)
+{
+    struct io_uring_sqe *sqe;
+
+    if ((sqe=ioevent_uring_get_sqe(&task->thread_data->ev_puller)) == NULL) {
+        return ENOSPC;
+    }
+
+    /* do NOT need callback */
+    ioevent_uring_prep_close(&task->thread_data->
+            ev_puller, sqe, task->event.fd, NULL);
+    return 0;
+}
+
+static inline int uring_prep_cancel(struct fast_task_info *task)
+{
+    SET_OP_TYPE_AND_HOLD_TASK(task, IORING_OP_ASYNC_CANCEL);
+    ioevent_uring_prep_cancel(&task->thread_data->ev_puller, sqe, task);
+    return 0;
+}
+
+static inline int uring_prep_connect(struct fast_task_info *task)
+{
+    int result;
+    sockaddr_convert_t *convert;
+
+    if ((task->event.fd=socketCreateEx2(AF_UNSPEC, task->server_ip,
+                    O_NONBLOCK, NULL, &result)) < 0)
+    {
+        return result;
+    }
+
+    convert = (sockaddr_convert_t *)(task->send.ptr->data +
+            task->send.ptr->size - 2 * sizeof(sockaddr_convert_t));
+    if ((result=setsockaddrbyip(task->server_ip, task->port, convert)) != 0) {
+        return result;
+    }
+
+    do {
+        SET_OP_TYPE_AND_HOLD_TASK(task, IORING_OP_CONNECT);
+        ioevent_uring_prep_connect(&task->thread_data->ev_puller, sqe,
+                task->event.fd, &convert->sa.addr, convert->len, task);
+    } while (0);
+    return 0;
+}
+#endif
+
 #ifdef __cplusplus
 }
 #endif
 
 #endif
-

src/logger.c

@@ -50,16 +50,16 @@ static int log_fsync(LogContext *pContext, const bool bNeedLock);
 
 static int check_and_mk_log_dir(const char *base_path)
 {
-	char data_path[MAX_PATH_SIZE];
+    char log_path[MAX_PATH_SIZE];
 
-	snprintf(data_path, sizeof(data_path), "%s/logs", base_path);
-	if (!fileExists(data_path))
+    fc_combine_full_filename(base_path, "logs", log_path);
+    if (!fileExists(log_path))
     {
-		if (mkdir(data_path, 0755) != 0)
+        if (mkdir(log_path, 0755) != 0)
         {
-			fprintf(stderr, "mkdir \"%s\" fail, " \
-				"errno: %d, error info: %s\n", \
-				data_path, errno, STRERROR(errno));
+            fprintf(stderr, "mkdir \"%s\" fail, "
+                    "errno: %d, error info: %s\n",
+                    log_path, errno, STRERROR(errno));
             return errno != 0 ? errno : EPERM;
         }
     }
@@ -112,7 +112,7 @@ int log_init_ex(LogContext *pContext)
 	}
 	pContext->pcurrent_buff = pContext->log_buff;
 
-	if ((result=init_pthread_lock(&(pContext->log_thread_lock))) != 0)
+	if ((result=init_pthread_lock(&(pContext->lock))) != 0)
 	{
 		return result;
 	}
@@ -136,8 +136,8 @@ static int log_print_header(LogContext *pContext)
     if (pContext->current_size < 0)
     {
         result = errno != 0 ? errno : EACCES;
-        fprintf(stderr, "lseek file \"%s\" fail, " \
-                "errno: %d, error info: %s\n", \
+        fprintf(stderr, "lseek file \"%s\" fail, "
+                "errno: %d, error info: %s\n",
                 pContext->log_filename, result, STRERROR(result));
     }
     else {
@@ -249,7 +249,7 @@ int log_set_filename_ex(LogContext *pContext, const char *log_filename)
 
     if (*(pContext->log_filename) == '\0')
     {
-        snprintf(pContext->log_filename, MAX_PATH_SIZE, "%s", log_filename);
+        fc_strlcpy(pContext->log_filename, log_filename, MAX_PATH_SIZE);
         return log_open(pContext);
     }
 
@@ -258,7 +258,7 @@ int log_set_filename_ex(LogContext *pContext, const char *log_filename)
         return 0;
     }
 
-    snprintf(pContext->log_filename, MAX_PATH_SIZE, "%s", log_filename);
+    fc_strlcpy(pContext->log_filename, log_filename, MAX_PATH_SIZE);
     return log_reopen_ex(pContext);
 }
 
@@ -296,9 +296,9 @@ void log_set_header_callback(LogContext *pContext, LogHeaderCallback header_call
     {
         int64_t current_size;
 
-		pthread_mutex_lock(&(pContext->log_thread_lock));
+		pthread_mutex_lock(&(pContext->lock));
         current_size = pContext->current_size;
-		pthread_mutex_unlock(&(pContext->log_thread_lock));
+		pthread_mutex_unlock(&(pContext->lock));
         if (current_size == 0)
         {
             log_print_header(pContext);
@@ -347,7 +347,7 @@ void log_destroy_ex(LogContext *pContext)
 		close(pContext->log_fd);
 		pContext->log_fd = STDERR_FILENO;
 
-		pthread_mutex_destroy(&pContext->log_thread_lock);
+		pthread_mutex_destroy(&pContext->lock);
 	}
 
 	if (pContext->log_buff != NULL)
@@ -385,12 +385,11 @@ static int log_delete_old_file(LogContext *pContext,
     char full_filename[MAX_PATH_SIZE + 128];
     if (NEED_COMPRESS_LOG(pContext->compress_log_flags))
     {
-        snprintf(full_filename, sizeof(full_filename), "%s%s",
-                old_filename, GZIP_EXT_NAME_STR);
+        fc_concat_two_strings(old_filename, GZIP_EXT_NAME_STR, full_filename);
     }
     else
     {
-        snprintf(full_filename, sizeof(full_filename), "%s", old_filename);
+        fc_safe_strcpy(full_filename, old_filename);
     }
 
     if (unlink(full_filename) != 0)
@@ -590,7 +589,9 @@ static int log_get_matched_files(LogContext *pContext,
     the_time = get_current_time() - days_before * 86400;
     localtime_r(&the_time, &tm);
     memset(filename_prefix, 0, sizeof(filename_prefix));
-    len = sprintf(filename_prefix, "%s.", log_filename);
+    len = strlen(log_filename);
+    memcpy(filename_prefix, log_filename, len);
+    *(filename_prefix + len++) = '.';
     strftime(filename_prefix + len, sizeof(filename_prefix) - len,
             rotate_time_format_prefix, &tm);
     prefix_filename_len = strlen(filename_prefix);
@@ -651,8 +652,8 @@ static int log_delete_matched_old_files(LogContext *pContext,
     log_get_file_path(pContext, log_filepath);
     for (i=0; i<filename_array.count; i++)
     {
-        snprintf(full_filename, sizeof(full_filename), "%s%s",
-                log_filepath, filename_array.filenames[i]);
+        fc_concat_two_strings(log_filepath, filename_array.
+                filenames[i], full_filename);
         if (unlink(full_filename) != 0)
         {
             if (errno != ENOENT)
@@ -703,7 +704,9 @@ int log_delete_old_files(void *args)
             the_time -= 86400;
             localtime_r(&the_time, &tm);
             memset(old_filename, 0, sizeof(old_filename));
-            len = sprintf(old_filename, "%s.", pContext->log_filename);
+            len = strlen(pContext->log_filename);
+            memcpy(old_filename, pContext->log_filename, len);
+            *(old_filename + len++) = '.';
             strftime(old_filename + len, sizeof(old_filename) - len,
                     pContext->rotate_time_format, &tm);
             if ((result=log_delete_old_file(pContext, old_filename)) != 0)
@@ -733,6 +736,7 @@ static void *log_gzip_func(void *args)
     char log_filepath[MAX_PATH_SIZE];
     char full_filename[MAX_PATH_SIZE + 32];
     char output[512];
+    const char *gzip_cmd_filename;
     int prefix_len;
     int result;
     int i;
@@ -760,11 +764,10 @@ static void *log_gzip_func(void *args)
             continue;
         }
 
-        snprintf(full_filename, sizeof(full_filename), "%s%s",
-                log_filepath, filename_array.filenames[i]);
-        snprintf(cmd, sizeof(cmd), "%s %s",
-                get_gzip_command_filename(), full_filename);
-
+        gzip_cmd_filename = get_gzip_command_filename();
+        fc_concat_two_strings(log_filepath, filename_array.
+                filenames[i], full_filename);
+        fc_combine_two_strings(gzip_cmd_filename, full_filename, ' ', cmd);
         result = getExecResult(cmd, output, sizeof(output));
         if (result != 0)
         {
@@ -843,7 +846,9 @@ int log_rotate(LogContext *pContext)
     localtime_r(&current_time, &tm);
 
     memset(old_filename, 0, sizeof(old_filename));
-	len = sprintf(old_filename, "%s.", pContext->log_filename);
+    len = strlen(pContext->log_filename);
+    memcpy(old_filename, pContext->log_filename, len);
+    *(old_filename + len++) = '.';
     strftime(old_filename + len, sizeof(old_filename) - len,
             pContext->rotate_time_format, &tm);
     if (access(old_filename, F_OK) == 0)
@@ -913,19 +918,19 @@ static int log_fsync(LogContext *pContext, const bool bNeedLock)
 		{
             if (bNeedLock)
             {
-                pthread_mutex_lock(&(pContext->log_thread_lock));
+                pthread_mutex_lock(&(pContext->lock));
             }
             result = log_check_rotate(pContext);
             if (bNeedLock)
             {
-                pthread_mutex_unlock(&(pContext->log_thread_lock));
+                pthread_mutex_unlock(&(pContext->lock));
             }
             return result;
 		}
 	}
 
 	if (bNeedLock && ((lock_res=pthread_mutex_lock( \
-			&(pContext->log_thread_lock))) != 0))
+			&(pContext->lock))) != 0))
 	{
 		fprintf(stderr, "file: "__FILE__", line: %d, " \
 			"call pthread_mutex_lock fail, " \
@@ -961,7 +966,7 @@ static int log_fsync(LogContext *pContext, const bool bNeedLock)
 	}
 
 	if (bNeedLock && ((lock_res=pthread_mutex_unlock( \
-			&(pContext->log_thread_lock))) != 0))
+			&(pContext->lock))) != 0))
 	{
 		fprintf(stderr, "file: "__FILE__", line: %d, " \
 			"call pthread_mutex_unlock fail, " \
@@ -972,8 +977,8 @@ static int log_fsync(LogContext *pContext, const bool bNeedLock)
 	return result;
 }
 
-static void doLogEx(LogContext *pContext, struct timeval *tv, \
-		const char *caption, const char *text, const int text_len, \
+void log_it_ex3(LogContext *pContext, struct timeval *tv,
+		const char *caption, const char *text, const int text_len,
 		const bool bNeedSync, const bool bNeedLock)
 {
 	struct tm tm;
@@ -998,7 +1003,7 @@ static void doLogEx(LogContext *pContext, struct timeval *tv, \
 		}
 	}
 
-	if (bNeedLock && (result=pthread_mutex_lock(&pContext->log_thread_lock)) != 0)
+	if (bNeedLock && (result=pthread_mutex_lock(&pContext->lock)) != 0)
 	{
 		fprintf(stderr, "file: "__FILE__", line: %d, " \
 			"call pthread_mutex_lock fail, " \
@@ -1013,12 +1018,12 @@ static void doLogEx(LogContext *pContext, struct timeval *tv, \
 			__LINE__, LOG_BUFF_SIZE, text_len + 64);
         if (bNeedLock)
         {
-		    pthread_mutex_unlock(&(pContext->log_thread_lock));
+		    pthread_mutex_unlock(&(pContext->lock));
         }
 		return;
 	}
 
-	if ((pContext->pcurrent_buff - pContext->log_buff) + text_len + 64 \
+	if ((pContext->pcurrent_buff - pContext->log_buff) + text_len + 64
 			> LOG_BUFF_SIZE)
 	{
 		log_fsync(pContext, false);
@@ -1046,8 +1051,12 @@ static void doLogEx(LogContext *pContext, struct timeval *tv, \
 
 	if (caption != NULL)
     {
-		buff_len = sprintf(pContext->pcurrent_buff, "%s - ", caption);
+        buff_len = strlen(caption);
+        memcpy(pContext->pcurrent_buff, caption, buff_len);
         pContext->pcurrent_buff += buff_len;
+        *pContext->pcurrent_buff++ = ' ';
+        *pContext->pcurrent_buff++ = '-';
+        *pContext->pcurrent_buff++ = ' ';
     }
 	memcpy(pContext->pcurrent_buff, text, text_len);
 	pContext->pcurrent_buff += text_len;
@@ -1058,7 +1067,7 @@ static void doLogEx(LogContext *pContext, struct timeval *tv, \
 		log_fsync(pContext, false);
 	}
 
-	if (bNeedLock && (result=pthread_mutex_unlock(&(pContext->log_thread_lock))) != 0)
+	if (bNeedLock && (result=pthread_mutex_unlock(&(pContext->lock))) != 0)
 	{
 		fprintf(stderr, "file: "__FILE__", line: %d, " \
 			"call pthread_mutex_unlock fail, " \
@@ -1067,8 +1076,8 @@ static void doLogEx(LogContext *pContext, struct timeval *tv, \
 	}
 }
 
-void log_it_ex2(LogContext *pContext, const char *caption, \
-		const char *text, const int text_len, \
+void log_it_ex2(LogContext *pContext, const char *caption,
+		const char *text, const int text_len,
         const bool bNeedSync, const bool bNeedLock)
 {
 	struct timeval tv;
@@ -1083,10 +1092,10 @@ void log_it_ex2(LogContext *pContext, const char *caption, \
 		gettimeofday(&tv, NULL);
 	}
 
-	doLogEx(pContext, &tv, caption, text, text_len, bNeedSync, bNeedLock);
+	log_it_ex3(pContext, &tv, caption, text, text_len, bNeedSync, bNeedLock);
 }
 
-void log_it_ex1(LogContext *pContext, const int priority, \
+void log_it_ex1(LogContext *pContext, const int priority,
 		const char *text, const int text_len)
 {
 	bool bNeedSync;
@@ -1282,7 +1291,7 @@ void logAccess(LogContext *pContext, struct timeval *tvStart, \
     {
         len = sizeof(text) - 1;
     }
-	doLogEx(pContext, tvStart, NULL, text, len, false, true);
+	log_it_ex3(pContext, tvStart, NULL, text, len, false, true);
 }
 
 const char *log_get_level_caption_ex(LogContext *pContext)

src/logger.h

@@ -62,7 +62,7 @@ typedef struct log_context
 	char *pcurrent_buff;
 
 	/* mutext lock */
-	pthread_mutex_t log_thread_lock;
+	pthread_mutex_t lock;
 
 	/*
 	rotate the log when the log file exceeds this parameter
@@ -343,7 +343,7 @@ void log_it_ex(LogContext *pContext, const int priority, \
  *           text_len: text string length (bytes)
  *  return: none
 */
-void log_it_ex1(LogContext *pContext, const int priority, \
+void log_it_ex1(LogContext *pContext, const int priority,
 		const char *text, const int text_len);
 
 /** log to file
@@ -355,10 +355,13 @@ void log_it_ex1(LogContext *pContext, const int priority, \
  *           bNeedSync: if sync to file immediatelly
  *  return: none
 */
-void log_it_ex2(LogContext *pContext, const char *caption, \
-		const char *text, const int text_len, \
+void log_it_ex2(LogContext *pContext, const char *caption,
+		const char *text, const int text_len,
         const bool bNeedSync, const bool bNeedLock);
 
+void log_it_ex3(LogContext *pContext, struct timeval *tv,
+		const char *caption, const char *text, const int text_len,
+		const bool bNeedSync, const bool bNeedLock);
 
 /** sync log buffer to log file
  *  parameters:

src/multi_socket_client.c

@@ -46,6 +46,7 @@ int fast_multi_sock_client_init_ex(FastMultiSockClient *client,
         fms_client_get_current_time_ms_func get_current_time_ms_func,
         const int init_recv_buffer_size, const int timeout_ms)
 {
+    const bool use_io_uring = false;
     int result;
     int new_init_recv_buffer_size;
     int i;
@@ -65,8 +66,8 @@ int fast_multi_sock_client_init_ex(FastMultiSockClient *client,
         return EINVAL;
     }
 
-    if ((result=ioevent_init(&client->ioevent, entry_count,
-                    timeout_ms, 0)) != 0)
+    if ((result=ioevent_init(&client->ioevent, "client",
+                    use_io_uring, entry_count, timeout_ms, 0)) != 0)
     {
         logError("file: "__FILE__", line: %d, "
                 "ioevent_init fail, errno: %d, error info: %s",
@@ -85,7 +86,7 @@ int fast_multi_sock_client_init_ex(FastMultiSockClient *client,
     }
 
     for (i=0; i<entry_count; i++) {
-        if ((result=fast_buffer_init_ex(&entries[i].recv_buffer,
+        if ((result=fast_buffer_init1(&entries[i].recv_buffer,
                         new_init_recv_buffer_size)) != 0)
         {
             return result;
@@ -316,9 +317,13 @@ static int fast_multi_sock_client_do_recv(FastMultiSockClient *client,
 static int fast_multi_sock_client_deal_io(FastMultiSockClient *client)
 {
     int result;
-	int event;
     int count;
+#if IOEVENT_USE_URING
+    unsigned head;
+#else
+	int event;
     int index;
+#endif
     int remain_timeout;
     FastMultiSockEntry *entry;
     char formatted_ip[FORMATTED_IP_SIZE];
@@ -330,6 +335,37 @@ static int fast_multi_sock_client_deal_io(FastMultiSockClient *client)
             break;
         }
 
+#if IOEVENT_USE_URING
+        result = io_uring_wait_cqe_timeout(&client->ioevent.ring,
+                &client->ioevent.cqe, &client->ioevent.timeout);
+        switch (result) {
+            case 0:
+                break;
+            case -ETIME:
+            case -EAGAIN:
+            case -EINTR:
+                continue;
+            default:
+                result *= -1;
+                logError("file: "__FILE__", line: %d, "
+                        "io_uring_wait_cqe fail, errno: %d, error info: %s",
+                        __LINE__, result, STRERROR(result));
+                return result;
+        }
+
+        count = 0;
+        io_uring_for_each_cqe(&client->ioevent.ring, head, client->ioevent.cqe) {
+            count++;
+            entry = (FastMultiSockEntry *)client->ioevent.cqe->user_data;
+            //logInfo("sock: %d, event: %d", entry->conn->sock, event);
+            result = entry->io_callback(client, entry);
+            if (result != 0 || entry->remain == 0) {
+                fast_multi_sock_client_finish(client, entry, result);
+            }
+        }
+        io_uring_cq_advance(&client->ioevent.ring, count);
+
+#else
         count = ioevent_poll_ex(&client->ioevent, remain_timeout);
         //logInfo("poll count: %d\n", count);
         for (index=0; index<count; index++) {
@@ -354,6 +390,7 @@ static int fast_multi_sock_client_deal_io(FastMultiSockClient *client)
                 fast_multi_sock_client_finish(client, entry, result);
             }
         }
+#endif
     }
 
 /*

src/process_ctrl.c

@@ -50,7 +50,7 @@ int write_to_pid_file(const char *pidFilename)
   char buff[32];
   int len;
 
-  len = sprintf(buff, "%d", (int)getpid());
+  len = fc_itoa(getpid(), buff);
   return writeToFile(pidFilename, buff, len);
 }
 

src/server_id_func.c

@@ -294,15 +294,18 @@ FCServerInfo *fc_server_get_by_ip_port_ex(FCServerConfig *ctx,
 static inline void fc_server_set_group_ptr_name(FCServerGroupInfo *ginfo,
         const char *group_name)
 {
+    int len;
+
     ginfo->group_name.str = ginfo->name_buff;
-    ginfo->group_name.len = snprintf(ginfo->name_buff,
-            sizeof(ginfo->name_buff) - 1, "%s", group_name);
-    if (ginfo->group_name.len == 0) {
-        return;
+    len = strlen(group_name);
+    if (len >= sizeof(ginfo->name_buff)) {
+        len = sizeof(ginfo->name_buff) - 1;
     }
 
-    fc_trim(ginfo->group_name.str);
-    ginfo->group_name.len = strlen(ginfo->group_name.str);
+    memcpy(ginfo->name_buff, group_name, len);
+    *(ginfo->name_buff + len) = '\0';
+    fc_trim(ginfo->name_buff);
+    ginfo->group_name.len = strlen(ginfo->name_buff);
 }
 
 static inline void fc_server_set_ip_prefix(FCServerGroupInfo *ginfo,
@@ -310,8 +313,8 @@ static inline void fc_server_set_ip_prefix(FCServerGroupInfo *ginfo,
 {
     ginfo->filter.ip_prefix.str = ginfo->filter.prefix_buff;
     if (ip_prefix != NULL) {
-        ginfo->filter.ip_prefix.len = snprintf(ginfo->filter.prefix_buff,
-                sizeof(ginfo->filter.prefix_buff) - 1, "%s", ip_prefix);
+        ginfo->filter.ip_prefix.len = fc_safe_strcpy(
+                ginfo->filter.prefix_buff, ip_prefix);
     }
 }
 

src/shared_func.c

@@ -46,6 +46,8 @@
 #endif
 
 bool g_set_cloexec = false;
+const char *g_lower_hex_chars = "0123456789abcdef";
+const char *g_upper_hex_chars = "0123456789ABCDEF";
 
 char *formatDatetime(const time_t nTime, \
 	const char *szDateFormat, \
@@ -145,7 +147,7 @@ char *getAbsolutePath(const char *filename, char *szAbsPath, \
 	
 	if (szPath[0] == '/')
 	{
-		snprintf(szAbsPath, pathSize, "%s", szPath);
+		fc_strlcpy(szAbsPath, szPath, pathSize);
 	}
 	else
 	{
@@ -165,11 +167,12 @@ char *getAbsolutePath(const char *filename, char *szAbsPath, \
 		
 		if (szPath[0] != '\0')
 		{
-			snprintf(szAbsPath, pathSize, "%s/%s", cwd, szPath);
+            fc_get_full_filepath_ex(cwd, strlen(cwd), szPath,
+                    strlen(szPath), szAbsPath, pathSize);
         }
 		else
         {
-			snprintf(szAbsPath, pathSize, "%s", cwd);
+            fc_strlcpy(szAbsPath, cwd, pathSize);
         }
 	}
 	
@@ -205,8 +208,7 @@ char *getExeAbsoluteFilename(const char *exeFilename, char *szAbsFilename, \
 		filename = exeFilename;
 		for (i=0; i<3; i++)
 		{
-			snprintf(cwd, sizeof(cwd), "%s/%s", \
-				search_paths[i], filename);
+            fc_combine_full_filename(search_paths[i], filename, cwd);
 			if (fileExists(cwd))
 			{
 				strcpy(szPath, search_paths[i]);
@@ -226,8 +228,8 @@ char *getExeAbsoluteFilename(const char *exeFilename, char *szAbsFilename, \
 		}
 		else
         {
-			snprintf(szAbsFilename, maxSize, "%s/%s", \
-				szPath, filename);
+            fc_get_full_filename_ex(szPath, strlen(szPath), filename,
+                    strlen(filename), szAbsFilename, maxSize);
             return szAbsFilename;
         }
 	}
@@ -241,7 +243,8 @@ char *getExeAbsoluteFilename(const char *exeFilename, char *szAbsFilename, \
 	
 	if (*szPath == '/')
 	{
-		snprintf(szAbsFilename, maxSize, "%s/%s", szPath, filename);
+        fc_get_full_filename_ex(szPath, strlen(szPath), filename,
+                strlen(filename), szAbsFilename, maxSize);
     }
 	else
 	{
@@ -261,13 +264,13 @@ char *getExeAbsoluteFilename(const char *exeFilename, char *szAbsFilename, \
 		
 		if (*szPath != '\0')
 		{
-			snprintf(szAbsFilename, maxSize, "%s/%s/%s", \
+			snprintf(szAbsFilename, maxSize, "%s/%s/%s",
 				cwd, szPath, filename);
 		}
 		else
         {
-			snprintf(szAbsFilename, maxSize, "%s/%s", \
-				cwd, filename);
+            fc_get_full_filename_ex(cwd, strlen(cwd), filename,
+                    strlen(filename), szAbsFilename, maxSize);
         }
 	}
 	
@@ -327,7 +330,7 @@ int getUserProcIds(const char *progName, const bool bAllOwners, \
 			continue;
 		}
 		
-		sprintf(fullpath, "%s/%s", path, dirp->d_name);
+        fc_combine_full_filepath(path, dirp->d_name, fullpath);
 		memset(&statbuf, 0, sizeof(statbuf));
 		if (lstat(fullpath, &statbuf) < 0)
 		{
@@ -336,7 +339,7 @@ int getUserProcIds(const char *progName, const bool bAllOwners, \
 
 		if ((bAllOwners || (statbuf.st_uid == myuid)) && S_ISDIR(statbuf.st_mode))
 		{
-			sprintf(filepath, "%s/cmdline", fullpath);
+            fc_combine_full_filename(fullpath, "cmdline", filepath);
 			if ((fd=open(filepath, O_RDONLY | O_CLOEXEC))<0)
 			{
 				continue;
@@ -357,11 +360,11 @@ int getUserProcIds(const char *progName, const bool bAllOwners, \
 			ptr = strrchr(buf, '/');
 			if (ptr == NULL)
 			{
-				snprintf(procname, 64, "%s", buf);
+				fc_safe_strcpy(procname, buf);
 			}
 			else
             {
-				snprintf(procname, 64, "%s", ptr + 1);
+                fc_safe_strcpy(procname, ptr + 1);
             }
 			
 			if (strcmp(procname, pTargetProg) == 0)
@@ -530,16 +533,17 @@ char *bin2hex(const char *s, const int len, char *szHexBuff)
 {
 	unsigned char *p;
 	unsigned char *pEnd;
-	int nLen;
+	char *dest;
 
-	nLen = 0;
+	dest = szHexBuff;
 	pEnd = (unsigned char *)s + len;
 	for (p=(unsigned char *)s; p<pEnd; p++)
     {
-		nLen += sprintf(szHexBuff + nLen, "%02x", *p);
+        *dest++ = g_lower_hex_chars[*p >> 4];
+        *dest++ = g_lower_hex_chars[*p & 0x0F];
     }
 
-	szHexBuff[nLen] = '\0';
+	*dest = '\0';
 	return szHexBuff;
 }
 
@@ -1450,13 +1454,13 @@ int writeToFile(const char *filename, const char *buff, const int file_size)
 	return 0;
 }
 
-int safeWriteToFile(const char *filename, const char *buff, \
+int safeWriteToFile(const char *filename, const char *buff,
 		const int file_size)
 {
 	char tmpFilename[PATH_MAX];
 	int result;
 
-	snprintf(tmpFilename, sizeof(tmpFilename), "%s.tmp", filename);
+    fc_combine_two_strings(filename, "tmp", '.', tmpFilename);
 	if ((result=writeToFile(tmpFilename, buff, file_size)) != 0)
 	{
 		return result;
@@ -1553,78 +1557,16 @@ int fc_copy_to_path(const char *src_filename, const char *dest_path)
     fname = strrchr(src_filename, '/');
     if (fname == NULL)
     {
-        snprintf(dest_filename, sizeof(dest_filename),
-                "%s/%s", dest_path, src_filename);
+        fc_combine_full_filename(dest_path, src_filename, dest_filename);
     }
     else
     {
-        snprintf(dest_filename, sizeof(dest_filename),
-                "%s%s", dest_path, fname);
+        fc_combine_full_filename(dest_path, fname, dest_filename);
     }
 
     return fc_copy_file(src_filename, dest_filename);
 }
 
-void short2buff(const short n, char *buff)
-{
-	unsigned char *p;
-	p = (unsigned char *)buff;
-	*p++ = (n >> 8) & 0xFF;
-	*p++ = n & 0xFF;
-}
-
-short buff2short(const char *buff)
-{
-	return  (short)((((unsigned char)(*(buff))) << 8) | \
-		((unsigned char)(*(buff+1))));
-}
-
-void int2buff(const int n, char *buff)
-{
-	unsigned char *p;
-	p = (unsigned char *)buff;
-	*p++ = (n >> 24) & 0xFF;
-	*p++ = (n >> 16) & 0xFF;
-	*p++ = (n >> 8) & 0xFF;
-	*p++ = n & 0xFF;
-}
-
-int buff2int(const char *buff)
-{
-	return  (((unsigned char)(*buff)) << 24) | \
-		(((unsigned char)(*(buff+1))) << 16) |  \
-		(((unsigned char)(*(buff+2))) << 8) | \
-		((unsigned char)(*(buff+3)));
-}
-
-void long2buff(int64_t n, char *buff)
-{
-	unsigned char *p;
-	p = (unsigned char *)buff;
-	*p++ = (n >> 56) & 0xFF;
-	*p++ = (n >> 48) & 0xFF;
-	*p++ = (n >> 40) & 0xFF;
-	*p++ = (n >> 32) & 0xFF;
-	*p++ = (n >> 24) & 0xFF;
-	*p++ = (n >> 16) & 0xFF;
-	*p++ = (n >> 8) & 0xFF;
-	*p++ = n & 0xFF;
-}
-
-int64_t buff2long(const char *buff)
-{
-	unsigned char *p;
-	p = (unsigned char *)buff;
-	return  (((int64_t)(*p)) << 56) | \
-		(((int64_t)(*(p+1))) << 48) |  \
-		(((int64_t)(*(p+2))) << 40) |  \
-		(((int64_t)(*(p+3))) << 32) |  \
-		(((int64_t)(*(p+4))) << 24) |  \
-		(((int64_t)(*(p+5))) << 16) |  \
-		(((int64_t)(*(p+6))) << 8) | \
-		((int64_t)(*(p+7)));
-}
-
 int fd_gets(int fd, char *buff, const int size, int once_bytes)
 {
 	char *pDest;
@@ -2626,7 +2568,6 @@ int get_time_item_from_str(const char *pValue, const char *item_name,
 
 char *urlencode(const char *src, const int src_len, char *dest, int *dest_len)
 {
-	static unsigned char hex_chars[] = "0123456789ABCDEF";
 	const unsigned char *pSrc;
 	const unsigned char *pEnd;
 	char *pDest;
@@ -2649,8 +2590,8 @@ char *urlencode(const char *src, const int src_len, char *dest, int *dest_len)
 		else
 		{
 			*pDest++ = '%';
-			*pDest++ = hex_chars[(*pSrc) >> 4];
-			*pDest++ = hex_chars[(*pSrc) & 0x0F];
+			*pDest++ = g_upper_hex_chars[(*pSrc) >> 4];
+			*pDest++ = g_upper_hex_chars[(*pSrc) & 0x0F];
 		}
 	}
 
@@ -3291,7 +3232,7 @@ static void add_thousands_separator(char *str, const int len)
 const char *int2str(const int n, char *buff, const bool thousands_separator)
 {
     int len;
-    len = sprintf(buff, "%d", n);
+    len = fc_ltostr(n, buff);
     if (thousands_separator)
     {
         add_thousands_separator(buff, len);
@@ -3302,7 +3243,7 @@ const char *int2str(const int n, char *buff, const bool thousands_separator)
 const char *long2str(const int64_t n, char *buff, const bool thousands_separator)
 {
     int len;
-    len = sprintf(buff, "%"PRId64, n);
+    len = fc_ltostr(n, buff);
     if (thousands_separator)
     {
         add_thousands_separator(buff, len);
@@ -3310,6 +3251,110 @@ const char *long2str(const int64_t n, char *buff, const bool thousands_separator
     return buff;
 }
 
+static int format_bytes_string(const int64_t input_bytes,
+        const int64_t unit_bytes, char *buff)
+{
+    int64_t remain;
+    int n;
+    int fragment;
+    char *p;
+
+    n = input_bytes / unit_bytes;
+    remain = input_bytes - (n * unit_bytes);
+    if (n < 10)
+    {
+        fragment = (remain * 10LL + unit_bytes / 2) / unit_bytes;
+        if (fragment == 10)
+        {
+            ++n;
+            fragment = 0;
+        }
+
+        p = buff + fc_itoa(n, buff);
+        if (n < 10)
+        {
+            *p++ = '.';
+            p += fc_itoa(fragment, p);
+        }
+    }
+    else
+    {
+        if (remain >= unit_bytes / 2)
+        {
+            ++n;
+        }
+        p = buff + fc_itoa(n, buff);
+    }
+    return p - buff;
+}
+
+const char *bytes_to_human_str(const int64_t bytes, char *buff)
+{
+    char *p;
+
+    if (bytes < FC_BYTES_ONE_TB)
+    {
+        if (bytes < FC_BYTES_ONE_MB)
+        {
+            if (bytes < FC_BYTES_ONE_KB)
+            {
+                p = buff + fc_itoa(bytes, buff);
+                *p++ = ' ';
+                *p++ = ' ';  //for alignment
+            }
+            else
+            {
+                p = buff + format_bytes_string(bytes, FC_BYTES_ONE_KB, buff);
+                *p++ = ' ';
+                *p++ = 'K';
+            }
+        }
+        else
+        {
+            if (bytes < FC_BYTES_ONE_GB)
+            {
+                p = buff + format_bytes_string(bytes, FC_BYTES_ONE_MB, buff);
+                *p++ = ' ';
+                *p++ = 'M';
+            }
+            else
+            {
+                p = buff + format_bytes_string(bytes, FC_BYTES_ONE_GB, buff);
+                *p++ = ' ';
+                *p++ = 'G';
+            }
+        }
+    }
+    else
+    {
+        if (bytes < FC_BYTES_ONE_EB)
+        {
+            if (bytes < FC_BYTES_ONE_PB)
+            {
+                p = buff + format_bytes_string(bytes, FC_BYTES_ONE_TB, buff);
+                *p++ = ' ';
+                *p++ = 'T';
+            }
+            else
+            {
+                p = buff + format_bytes_string(bytes, FC_BYTES_ONE_PB, buff);
+                *p++ = ' ';
+                *p++ = 'P';
+            }
+        }
+        else
+        {
+            p = buff + format_bytes_string(bytes, FC_BYTES_ONE_EB, buff);
+            *p++ = ' ';
+            *p++ = 'E';
+        }
+    }
+    *p++ = 'B';
+    *p = '\0';
+
+    return buff;
+}
+
 bool starts_with(const char *str, const char *needle)
 {
     int str_len;
@@ -4272,15 +4317,13 @@ int fc_safe_write_file_init(SafeWriteFileInfo *fi,
 {
     char full_filename[PATH_MAX];
 
-    snprintf(full_filename, sizeof(full_filename), "%s/%s",
-            file_path, redo_filename);
+    fc_combine_full_filename(file_path, redo_filename, full_filename);
     if ((fi->filename=fc_strdup(full_filename)) == NULL)
     {
         return ENOMEM;
     }
 
-    snprintf(full_filename, sizeof(full_filename), "%s/%s",
-            file_path, tmp_filename);
+    fc_combine_full_filename(file_path, tmp_filename, full_filename);
     if ((fi->tmp_filename=fc_strdup(full_filename)) == NULL)
     {
         return ENOMEM;
@@ -4363,6 +4406,119 @@ int fc_itoa(int64_t n, char *buff)
     return (start - buff) + len;
 }
 
+int fc_ftoa(double d, const int scale, char *buff)
+{
+    int len;
+    int i;
+    bool positive;
+    int64_t n;
+    double fraction;
+    char *p;
+
+    positive = (d >= 0.00);
+    switch (scale)
+    {
+        case 0:
+            d += (positive ? 5e-1 : -5e-1);
+            break;
+        case 1:
+            d += (positive ? 5e-2 : -5e-2);
+            break;
+        case 2:
+            d += (positive ? 5e-3 : -5e-3);
+            break;
+        case 3:
+            d += (positive ? 5e-4 : -5e-4);
+            break;
+        case 4:
+            d += (positive ? 5e-5 : -5e-5);
+            break;
+        case 5:
+            d += (positive ? 5e-6 : -5e-6);
+            break;
+        case 6:
+            d += (positive ? 5e-7 : -5e-7);
+            break;
+        case 7:
+            d += (positive ? 5e-8 : -5e-8);
+            break;
+        case 8:
+            d += (positive ? 5e-9 : -5e-9);
+            break;
+        case 9:
+            d += (positive ? 5e-10 : -5e-10);
+            break;
+        case 10:
+            d += (positive ? 5e-11 : -5e-11);
+            break;
+        case 11:
+            d += (positive ? 5e-12 : -5e-12);
+            break;
+        case 12:
+            d += (positive ? 5e-13 : -5e-13);
+            break;
+        case 13:
+            d += (positive ? 5e-14 : -5e-14);
+            break;
+        case 14:
+            d += (positive ? 5e-15 : -5e-15);
+            break;
+        case 15:
+            d += (positive ? 5e-16 : -5e-16);
+            break;
+        case 16:
+            d += (positive ? 5e-17 : -5e-17);
+            break;
+        default:
+            d += (positive ? 5e-18 : -5e-18);
+            break;
+    }
+
+    n = (int64_t)d;
+    if (n > -10 && n < 10)
+    {
+        if (positive)
+        {
+            *buff = '0' + n;
+            len = 1;
+        }
+        else
+        {
+            *buff = '-';
+            *(buff+1) = '0' + (-1) * n;
+            len = 2;
+        }
+    }
+    else
+    {
+        len = fc_itoa(n, buff);
+    }
+    if (scale <= 0)
+    {
+        return len;
+    }
+
+    p = buff + len;
+    *p++ = '.';
+    if (positive)
+    {
+        fraction = d - (double)n;
+    }
+    else
+    {
+        fraction = (double)n - d;
+    }
+    for (i=0; i<scale; i++)
+    {
+        fraction *= 10;
+        n = (int)fraction;
+        fraction -= n;
+        *p++ = '0' + n;
+    }
+
+    return p - buff;
+}
+
 int fc_compare_int64_ptr(const int64_t *n1, const int64_t *n2)
 {
     return fc_compare_int64(*n1, *n2);

src/shared_func.h

@@ -46,6 +46,8 @@ extern "C" {
 #endif
 
     extern bool g_set_cloexec;
+    extern const char *g_lower_hex_chars;
+    extern const char *g_upper_hex_chars;
 
 static inline void fc_enable_fd_cloexec(const bool cloexec)
 {
@@ -196,14 +198,24 @@ void printBuffHex(const char *s, const int len);
  *  	buff: the buffer, at least 2 bytes space, no tail \0
  *  return: none
 */
-void short2buff(const short n, char *buff);
+static inline void short2buff(const short n, char *buff)
+{
+	unsigned char *p;
+	p = (unsigned char *)buff;
+	*p++ = (n >> 8) & 0xFF;
+	*p++ = n & 0xFF;
+}
 
 /** buffer convert to 16 bits int
  *  parameters:
  *  	buff: big-endian 2 bytes buffer
  *  return: 16 bits int value
 */
-short buff2short(const char *buff);
+static inline short buff2short(const char *buff)
+{
+	return  (short)((((unsigned char)(*(buff))) << 8) |
+		((unsigned char)(*(buff+1))));
+}
 
 /** 32 bits int convert to buffer (big-endian)
  *  parameters:
@@ -211,14 +223,28 @@ short buff2short(const char *buff);
  *  	buff: the buffer, at least 4 bytes space, no tail \0
  *  return: none
 */
-void int2buff(const int n, char *buff);
+static inline void int2buff(const int n, char *buff)
+{
+	unsigned char *p;
+	p = (unsigned char *)buff;
+	*p++ = (n >> 24) & 0xFF;
+	*p++ = (n >> 16) & 0xFF;
+	*p++ = (n >> 8) & 0xFF;
+	*p++ = n & 0xFF;
+}
 
 /** buffer convert to 32 bits int
  *  parameters:
  *  	buff: big-endian 4 bytes buffer
  *  return: 32 bits int value
 */
-int buff2int(const char *buff);
+static inline int buff2int(const char *buff)
+{
+	return  (((unsigned char)(*buff)) << 24) |
+		(((unsigned char)(*(buff+1))) << 16) |
+		(((unsigned char)(*(buff+2))) << 8)  |
+		((unsigned char)(*(buff+3)));
+}
 
 /** long (64 bits) convert to buffer (big-endian)
  *  parameters:
@@ -226,15 +252,38 @@ int buff2int(const char *buff);
  *  	buff: the buffer, at least 8 bytes space, no tail \0
  *  return: none
 */
-void long2buff(int64_t n, char *buff);
+static inline void long2buff(int64_t n, char *buff)
+{
+	unsigned char *p;
+	p = (unsigned char *)buff;
+	*p++ = (n >> 56) & 0xFF;
+	*p++ = (n >> 48) & 0xFF;
+	*p++ = (n >> 40) & 0xFF;
+	*p++ = (n >> 32) & 0xFF;
+	*p++ = (n >> 24) & 0xFF;
+	*p++ = (n >> 16) & 0xFF;
+	*p++ = (n >> 8) & 0xFF;
+	*p++ = n & 0xFF;
+}
 
 /** buffer convert to 64 bits int
  *  parameters:
  *  	buff: big-endian 8 bytes buffer
  *  return: 64 bits int value
 */
-int64_t buff2long(const char *buff);
-
+static inline int64_t buff2long(const char *buff)
+{
+	unsigned char *p;
+	p = (unsigned char *)buff;
+	return  (((int64_t)(*p)) << 56) |
+		(((int64_t)(*(p+1))) << 48) |
+		(((int64_t)(*(p+2))) << 40) |
+		(((int64_t)(*(p+3))) << 32) |
+		(((int64_t)(*(p+4))) << 24) |
+		(((int64_t)(*(p+5))) << 16) |
+		(((int64_t)(*(p+6))) <<  8) |
+		((int64_t)(*(p+7)));
+}
 
 /** 32 bits float convert to buffer (big-endian)
  *  parameters:
@@ -292,6 +341,154 @@ static inline double buff2double(const char *buff)
     return *p;
 }
 
+static inline int padding_hex(char *buff, const int len, const int padding_len)
+{
+    char *p;
+    char *end;
+    char *stop;
+    int new_len;
+    int fill_len;
+
+    if (padding_len == len) {
+        return len;
+    } else if (padding_len > len) {
+        fill_len = padding_len - len;
+        memmove(buff + fill_len, buff, len + 1);
+        memset(buff, '0', fill_len);
+        return padding_len;
+    } else if (*buff != '0') {
+        return len;
+    }
+
+    end = buff + len;
+    if (padding_len <= 0) {
+        stop = end - 1;
+    } else {
+        stop = end - padding_len;
+    }
+
+    p = buff + 1;
+    while (p < stop && *p == '0') {
+        ++p;
+    }
+
+    new_len = end - p;
+    memmove(buff, p, new_len + 1);
+    return new_len;
+}
+
+static inline int short2hex(const short n, char *buff, const int padding_len)
+{
+    unsigned char *p;
+
+    p = (unsigned char *)buff;
+    *p++ = g_lower_hex_chars[(n >> 12) & 0x0F];
+    *p++ = g_lower_hex_chars[(n >> 8) & 0x0F];
+    *p++ = g_lower_hex_chars[(n >> 4) & 0x0F];
+    *p++ = g_lower_hex_chars[n & 0x0F];
+    *p = '\0';
+    return padding_hex(buff, 4, padding_len);
+}
+
+static inline int short2HEX(const short n, char *buff, const int padding_len)
+{
+    unsigned char *p;
+
+    p = (unsigned char *)buff;
+    *p++ = g_upper_hex_chars[(n >> 12) & 0x0F];
+    *p++ = g_upper_hex_chars[(n >> 8) & 0x0F];
+    *p++ = g_upper_hex_chars[(n >> 4) & 0x0F];
+    *p++ = g_upper_hex_chars[n & 0x0F];
+    *p = '\0';
+    return padding_hex(buff, 4, padding_len);
+}
+
+static inline int int2hex(const int n, char *buff, const int padding_len)
+{
+    unsigned char *p;
+
+    p = (unsigned char *)buff;
+    *p++ = g_lower_hex_chars[(n >> 28) & 0x0F];
+    *p++ = g_lower_hex_chars[(n >> 24) & 0x0F];
+    *p++ = g_lower_hex_chars[(n >> 20) & 0x0F];
+    *p++ = g_lower_hex_chars[(n >> 16) & 0x0F];
+    *p++ = g_lower_hex_chars[(n >> 12) & 0x0F];
+    *p++ = g_lower_hex_chars[(n >> 8) & 0x0F];
+    *p++ = g_lower_hex_chars[(n >> 4) & 0x0F];
+    *p++ = g_lower_hex_chars[n & 0x0F];
+    *p = '\0';
+    return padding_hex(buff, 8, padding_len);
+}
+
+static inline int int2HEX(const int n, char *buff, const int padding_len)
+{
+    unsigned char *p;
+
+    p = (unsigned char *)buff;
+    *p++ = g_upper_hex_chars[(n >> 28) & 0x0F];
+    *p++ = g_upper_hex_chars[(n >> 24) & 0x0F];
+    *p++ = g_upper_hex_chars[(n >> 20) & 0x0F];
+    *p++ = g_upper_hex_chars[(n >> 16) & 0x0F];
+    *p++ = g_upper_hex_chars[(n >> 12) & 0x0F];
+    *p++ = g_upper_hex_chars[(n >> 8) & 0x0F];
+    *p++ = g_upper_hex_chars[(n >> 4) & 0x0F];
+    *p++ = g_upper_hex_chars[n & 0x0F];
+    *p = '\0';
+    return padding_hex(buff, 8, padding_len);
+}
+
+static inline int long2hex(const int64_t n,
+        char *buff, const int padding_len)
+{
+    unsigned char *p;
+
+    p = (unsigned char *)buff;
+    *p++ = g_lower_hex_chars[(n >> 60) & 0x0F];
+    *p++ = g_lower_hex_chars[(n >> 56) & 0x0F];
+    *p++ = g_lower_hex_chars[(n >> 52) & 0x0F];
+    *p++ = g_lower_hex_chars[(n >> 48) & 0x0F];
+    *p++ = g_lower_hex_chars[(n >> 44) & 0x0F];
+    *p++ = g_lower_hex_chars[(n >> 40) & 0x0F];
+    *p++ = g_lower_hex_chars[(n >> 36) & 0x0F];
+    *p++ = g_lower_hex_chars[(n >> 32) & 0x0F];
+    *p++ = g_lower_hex_chars[(n >> 28) & 0x0F];
+    *p++ = g_lower_hex_chars[(n >> 24) & 0x0F];
+    *p++ = g_lower_hex_chars[(n >> 20) & 0x0F];
+    *p++ = g_lower_hex_chars[(n >> 16) & 0x0F];
+    *p++ = g_lower_hex_chars[(n >> 12) & 0x0F];
+    *p++ = g_lower_hex_chars[(n >> 8) & 0x0F];
+    *p++ = g_lower_hex_chars[(n >> 4) & 0x0F];
+    *p++ = g_lower_hex_chars[n & 0x0F];
+    *p = '\0';
+    return padding_hex(buff, 16, padding_len);
+}
+
+static inline int long2HEX(const int64_t n,
+        char *buff, const int padding_len)
+{
+    unsigned char *p;
+
+    p = (unsigned char *)buff;
+    *p++ = g_upper_hex_chars[(n >> 60) & 0x0F];
+    *p++ = g_upper_hex_chars[(n >> 56) & 0x0F];
+    *p++ = g_upper_hex_chars[(n >> 52) & 0x0F];
+    *p++ = g_upper_hex_chars[(n >> 48) & 0x0F];
+    *p++ = g_upper_hex_chars[(n >> 44) & 0x0F];
+    *p++ = g_upper_hex_chars[(n >> 40) & 0x0F];
+    *p++ = g_upper_hex_chars[(n >> 36) & 0x0F];
+    *p++ = g_upper_hex_chars[(n >> 32) & 0x0F];
+    *p++ = g_upper_hex_chars[(n >> 28) & 0x0F];
+    *p++ = g_upper_hex_chars[(n >> 24) & 0x0F];
+    *p++ = g_upper_hex_chars[(n >> 20) & 0x0F];
+    *p++ = g_upper_hex_chars[(n >> 16) & 0x0F];
+    *p++ = g_upper_hex_chars[(n >> 12) & 0x0F];
+    *p++ = g_upper_hex_chars[(n >> 8) & 0x0F];
+    *p++ = g_upper_hex_chars[(n >> 4) & 0x0F];
+    *p++ = g_upper_hex_chars[n & 0x0F];
+    *p = '\0';
+    return padding_hex(buff, 16, padding_len);
+}
+
 /** trim leading spaces ( \t\r\n)
  *  parameters:
  *  	pStr: the string to trim
@@ -994,6 +1191,8 @@ static inline const char *long_to_comma_str(const int64_t n, char *buff)
     return long2str(n, buff, true);
 }
 
+const char *bytes_to_human_str(const int64_t bytes, char *buff);
+
 /** if the string starts with the needle string
  *  parameters:
  *  	str: the string to detect
@@ -1091,6 +1290,190 @@ static inline int resolve_path(const char *from, const char *filename,
             size, NORMALIZE_FLAGS_URL_ENABLED_AND_APPEND_PARAMS);
 }
 
+static inline int fc_combine_two_strings_ex(
+        const char *first_str, const int first_len,
+        const char *second_str, const int second_len,
+        const char seperator, char *combined_str, const int size)
+{
+    char *p;
+
+    if (first_len + 1 + second_len >= size) {
+        return snprintf(combined_str, size, "%s%c%s",
+                first_str, seperator, second_str);
+    }
+
+    memcpy(combined_str, first_str, first_len);
+    p = combined_str + first_len;
+    if (seperator != '\0') {
+        *p++ = seperator;
+    }
+    memcpy(p, second_str, second_len);
+    p += second_len;
+    *p = '\0';
+    return p - combined_str;
+}
+
+#define fc_combine_two_strings_s(first, second, seperator, combined, size)  \
+    fc_combine_two_strings_ex(first, strlen(first), second, strlen(second), \
+            seperator, combined, size)
+
+#define fc_combine_two_strings(first, second, seperator, combined) \
+    fc_combine_two_strings_s(first, second, seperator,   \
+            combined, sizeof(combined))
+
+#define fc_concat_two_strings(first, second, combined)   \
+    fc_combine_two_strings(first, second, '\0', combined)
+
+static inline int fc_get_full_filename_ex(
+        const char *base_path_str, const int base_path_len,
+        const char *filename_str, const int filename_len,
+        char *full_filename, const int size)
+{
+    const char seperator = '/';
+    return fc_combine_two_strings_ex(base_path_str, base_path_len,
+            filename_str, filename_len, seperator, full_filename, size);
+}
+
+#define fc_get_full_filename(base_path_str, base_path_len,    \
+        filename_str, filename_len, full_filename)            \
+        fc_get_full_filename_ex(base_path_str, base_path_len, \
+            filename_str, filename_len, full_filename, sizeof(full_filename))
+
+#define fc_combine_full_filename(base_path, filename, full_filename) \
+    fc_get_full_filename(base_path, strlen(base_path),    \
+        filename, strlen(filename), full_filename)
+
+#define fc_get_full_filepath_ex(base_path_str, base_path_len, \
+        filepath_str, filepath_len, full_filename, size)      \
+        fc_get_full_filename_ex(base_path_str, base_path_len, \
+        filepath_str, filepath_len, full_filename, size)
+
+#define fc_get_full_filepath(base_path_str, base_path_len,    \
+        filepath_str, filepath_len, full_filename)            \
+        fc_get_full_filename(base_path_str, base_path_len,    \
+        filepath_str, filepath_len, full_filename)
+
+#define fc_combine_full_filepath(base_path, filepath, full_filename) \
+    fc_combine_full_filename(base_path, filepath, full_filename)
+
+static inline int fc_get_hex_subdir_filepath(const char *base_path,
+        const int base_len, const int subdir_index, char *file_path)
+{
+    const int padding_len = 2;
+    char *p;
+
+    memcpy(file_path, base_path, base_len);
+    p = file_path + base_len;
+    *p++ = '/';
+    if (subdir_index <= UINT8_MAX) {
+        *p++ = g_upper_hex_chars[(subdir_index >> 4) & 0x0F];
+        *p++ = g_upper_hex_chars[subdir_index & 0x0F];
+        *p = '\0';
+    } else {
+        if (subdir_index <= UINT16_MAX) {
+            p += short2HEX(subdir_index, p, padding_len);
+        } else {
+            p += int2HEX(subdir_index, p, padding_len);
+        }
+    }
+
+    return p - file_path;
+}
+
+static inline int fc_get_two_subdirs_full_filepath_ex(
+        const char *base_path, const int base_len,
+        const char *subdir_str1, const int subdir_len1,
+        const char *subdir_str2, const int subdir_len2,
+        char *file_path, const int size)
+{
+    char *p;
+
+    if (base_len + 1 + subdir_len1 + 1 + subdir_len2 >= size) {
+        return snprintf(file_path, size, "%s/%s/%s",
+                base_path, subdir_str1, subdir_str2);
+    }
+
+    memcpy(file_path, base_path, base_len);
+    p = file_path + base_len;
+    *p++ = '/';
+    memcpy(p, subdir_str1, subdir_len1);
+    p += subdir_len1;
+    *p++ = '/';
+    memcpy(p, subdir_str2, subdir_len2);
+    p += subdir_len2;
+    *p = '\0';
+    return p - file_path;
+}
+
+#define fc_get_two_subdirs_full_filepath(base_path, base_len,          \
+        subdir_str1, subdir_len1, subdir_str2, subdir_len2, file_path) \
+        fc_get_two_subdirs_full_filepath_ex(base_path, base_len,    \
+                subdir_str1, subdir_len1, subdir_str2, subdir_len2, \
+                file_path, sizeof(file_path))
+
+#define fc_get_one_subdir_full_filename_ex(base_path, base_len, subdir_str, \
+        subdir_len, filename_str, filename_len, full_filename, size)        \
+        fc_get_two_subdirs_full_filepath_ex(base_path, base_len,    \
+                subdir_str, subdir_len, filename_str, filename_len, \
+                full_filename, size)
+
+#define fc_get_one_subdir_full_filename(base_path, base_len, subdir_str, \
+        subdir_len, filename_str, filename_len, full_filename)      \
+        fc_get_one_subdir_full_filename_ex(base_path, base_len,     \
+                subdir_str, subdir_len, filename_str, filename_len, \
+                full_filename, sizeof(full_filename))
+
+static inline int fc_get_three_subdirs_full_filepath_ex(
+        const char *base_path, const int base_len,
+        const char *subdir_str1, const int subdir_len1,
+        const char *subdir_str2, const int subdir_len2,
+        const char *subdir_str3, const int subdir_len3,
+        char *file_path, const int size)
+{
+    char *p;
+
+    if (base_len + 1 + subdir_len1 + 1 + subdir_len2 + subdir_len3 >= size) {
+        return snprintf(file_path, size, "%s/%s/%s/%s",
+                base_path, subdir_str1, subdir_str2, subdir_str3);
+    }
+
+    memcpy(file_path, base_path, base_len);
+    p = file_path + base_len;
+    *p++ = '/';
+    memcpy(p, subdir_str1, subdir_len1);
+    p += subdir_len1;
+    *p++ = '/';
+    memcpy(p, subdir_str2, subdir_len2);
+    p += subdir_len2;
+    *p++ = '/';
+    memcpy(p, subdir_str3, subdir_len3);
+    p += subdir_len3;
+    *p = '\0';
+    return p - file_path;
+}
+
+#define fc_get_three_subdirs_full_filepath(base_path, base_len,  \
+        subdir_str1, subdir_len1, subdir_str2, subdir_len2,      \
+        subdir_str3, subdir_len3, file_path)  \
+        fc_get_three_subdirs_full_filepath_ex(base_path, base_len,     \
+                subdir_str1, subdir_len1, subdir_str2, subdir_len2,    \
+                subdir_str3, subdir_len3, file_path, sizeof(file_path))
+
+#define fc_get_two_subdirs_full_filename_ex(base_path, base_len, \
+        subdir_str1, subdir_len1, subdir_str2, subdir_len2,     \
+        filename_str, filename_len, full_filename, size)        \
+        fc_get_three_subdirs_full_filepath_ex(base_path, base_len,    \
+                subdir_str1, subdir_len1, subdir_str2, subdir_len2,   \
+                filename_str, filename_len, full_filename, size)
+
+#define fc_get_two_subdirs_full_filename(base_path, base_len,    \
+        subdir_str1, subdir_len1, subdir_str2, subdir_len2,     \
+        filename_str, filename_len, full_filename)              \
+        fc_get_two_subdirs_full_filename_ex(base_path, base_len, \
+        subdir_str1, subdir_len1, subdir_str2, subdir_len2,     \
+        filename_str, filename_len, full_filename, sizeof(full_filename))
+
+
 /** get gzip command full filename
  *  return: the gzip command full filename
 */
@@ -1220,12 +1603,82 @@ bool fc_path_contains(const string_t *path, const string_t *needle,
 
 /** itoa output as decimal number
  *  parameters:
- *      n: the number to convert
- *      buff: store the converted string
- *  return: string length
+ *      n: the integer number to convert
+ *      buff: store the converted string, NOT null-terminated
+ *  return: converted string length
 */
 int fc_itoa(int64_t n, char *buff);
 
+/** ftoa output as decimal number
+ *  parameters:
+ *      d: the double number to convert
+ *      scale: number of decimal places (round off)
+ *      buff: store the converted string, NOT null-terminated
+ *  return: converted string length
+*/
+int fc_ftoa(double d, const int scale, char *buff);
+
+/** output as decimal number
+ *  parameters:
+ *      n: the integer number to convert
+ *      buff: store the converted string, null-terminated
+ *      padding_len: padding length (padding with charactor '0')
+ *  return: converted string length
+*/
+static inline int fc_ltostr_ex(int64_t n, char *buff, const int padding_len)
+{
+    int len;
+    int fill_len;
+
+    len = fc_itoa(n, buff);
+    *(buff + len) = '\0';
+    if (padding_len <= len) {
+        return len;
+    }
+
+#if defined(OS_LINUX) && defined(__GNUC__) && __GNUC__ >= 8
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wstringop-overflow"
+#endif
+
+    fill_len = padding_len - len;
+    memmove(buff + fill_len, buff, len + 1);
+    memset(buff, '0', fill_len);
+
+#if defined(OS_LINUX) && defined(__GNUC__) && __GNUC__ >= 8
+#pragma GCC diagnostic pop
+#endif
+
+    return padding_len;
+}
+
+static inline int fc_ltostr(int64_t n, char *buff)
+{
+    int len;
+
+    len = fc_itoa(n, buff);
+    *(buff + len) = '\0';
+    return len;
+}
+
+static inline size_t fc_strlcpy(char *dest, const char *src, const size_t size)
+{
+    size_t len;
+
+    len = strlen(src);
+    if (len < size) {
+        memcpy(dest, src, len + 1);
+    } else {
+        len = size - 1;
+        memcpy(dest, src, len);
+        *(dest + len) = '\0';
+    }
+
+    return len;
+}
+
+#define fc_safe_strcpy(dest, src) fc_strlcpy(dest, src, sizeof(dest))
+
 /** sleep in microseconds
  *  parameters:
  *      microseconds: microseconds to sleep

src/sockopt.c

@@ -1194,7 +1194,7 @@ char *getHostnameByIp(const char *szIpAddr, char *buff, const int bufferSize)
 	}
 	else
 	{
-		snprintf(buff, bufferSize, "%s", ent->h_name);
+		fc_strlcpy(buff, ent->h_name, bufferSize);
 	}
 
 	return buff;
@@ -1208,39 +1208,48 @@ in_addr_64_t getIpaddrByNameEx(const char *name, char *buff,
     struct in6_addr addr6;
     in_addr_64_t ip_addr;
 
-    if ((*name >= '0' && *name <= '9') &&
-            inet_pton(AF_INET, name, &addr4) == 1)
+    if (strchr(name, ':') != NULL)  //IPv6
+    {
+        if (strchr(name, '%') == NULL &&
+                inet_pton(AF_INET6, name, &addr6) == 1)
         {
             if (buff != NULL)
             {
-            snprintf(buff, bufferSize, "%s", name);
-        }
-        *af = AF_INET;
-        return addr4.s_addr;
-    }
-    if (strchr(name, ':') != NULL && inet_pton(
-                AF_INET6, name, &addr6) == 1)
+                if (inet_ntop(AF_INET6, &addr6, buff, bufferSize) == NULL)
                 {
-        if (buff != NULL)
-        {
-            snprintf(buff, bufferSize, "%s", name);
+                    *buff = '\0';
+                }
             }
             *af = AF_INET6;
             return *((in_addr_64_t *)((char *)&addr6 + 8));
         }
+    }
+    else if ((*name >= '0' && *name <= '9') &&
+            inet_pton(AF_INET, name, &addr4) == 1)
+    {
+        if (buff != NULL)
+        {
+            if (inet_ntop(AF_INET, &addr4, buff, bufferSize) == NULL)
+            {
+                *buff = '\0';
+            }
+        }
+        *af = AF_INET;
+        return addr4.s_addr;
+    }
 
+    *af = AF_UNSPEC;
 	memset(&hints, 0, sizeof hints);
-	hints.ai_family = AF_UNSPEC; // 支持IPv4和IPv6
+	hints.ai_family = AF_UNSPEC;
 	if (getaddrinfo(name, NULL, &hints, &res) != 0)
     {
-        *af = AF_UNSPEC;
         return INADDR_NONE;
     }
 
+    ip_addr = INADDR_NONE;
     for (p = res; p != NULL; p = p->ai_next)
     {
-        *af = p->ai_family;
-        if (p->ai_family == AF_INET) // 处理IPv4地址
+        if (p->ai_family == AF_INET) //IPv4 address
         {
             struct sockaddr_in *ipv4 = (struct sockaddr_in *)p->ai_addr;
             if (buff != NULL)
@@ -1251,11 +1260,11 @@ in_addr_64_t getIpaddrByNameEx(const char *name, char *buff,
                 }
             }
 
+            *af = p->ai_family;
             ip_addr = ipv4->sin_addr.s_addr;
-            freeaddrinfo(res);
-            return ip_addr;
+            break;
         }
-        else if (p->ai_family == AF_INET6) // 处理IPv6地址
+        else if (p->ai_family == AF_INET6) //IPv6 address
         {
             struct sockaddr_in6 *ipv6 = (struct sockaddr_in6 *)p->ai_addr;
             if (buff != NULL)
@@ -1272,15 +1281,14 @@ in_addr_64_t getIpaddrByNameEx(const char *name, char *buff,
                 }
             }
 
+            *af = p->ai_family;
             ip_addr = *((in_addr_64_t *)((char *)&ipv6->sin6_addr + 8));
-            freeaddrinfo(res);
-            return ip_addr;
+            continue;
         }
     }
 
     freeaddrinfo(res);
-    *af = AF_UNSPEC;
-    return INADDR_NONE;
+    return ip_addr;
 }
 
 int getIpaddrsByName(const char *name,
@@ -1393,14 +1401,12 @@ int nbaccept(int sock, const int timeout, int *err_no)
 int socketBind2(int af, int sock, const char *bind_ipaddr, const int port)
 {
     sockaddr_convert_t convert;
-    char bind_ip_prompt[256];
     int result;
 
     memset(&convert, 0, sizeof(convert));
     convert.sa.addr.sa_family = af;
 	if (bind_ipaddr == NULL || *bind_ipaddr == '\0')
 	{
-        *bind_ip_prompt = '\0';
         if (af == AF_INET)
         {
             convert.len = sizeof(convert.sa.addr4);
@@ -1420,11 +1426,15 @@ int socketBind2(int af, int sock, const char *bind_ipaddr, const int port)
         {
             return result;
         }
-        sprintf(bind_ip_prompt, "bind ip %s, ", bind_ipaddr);
     }
 
-	if (bind(sock, &convert.sa.addr, convert.len) < 0)
-	{
+	if (bind(sock, &convert.sa.addr, convert.len) < 0) {
+        char bind_ip_prompt[256];
+        if (bind_ipaddr == NULL || *bind_ipaddr == '\0') {
+            *bind_ip_prompt = '\0';
+        } else {
+            sprintf(bind_ip_prompt, "bind ip %s, ", bind_ipaddr);
+        }
 		logError("file: "__FILE__", line: %d, "
 			"%sbind port %d failed, "
 			"errno: %d, error info: %s.",
@@ -2180,10 +2190,10 @@ int tcpprintkeepalive(int fd)
 		return errno != 0 ? errno : EINVAL;
 	}
 
-	logInfo("keepAlive=%d, keepIdle=%d, keepInterval=%d, keepCount=%d", 
+	logDebug("keepAlive=%d, keepIdle=%d, keepInterval=%d, keepCount=%d",
 		keepAlive, keepIdle, keepInterval, keepCount);
 #else
-        logInfo("keepAlive=%d", keepAlive);
+        logDebug("keepAlive=%d", keepAlive);
 #endif
 
 	return 0;
@@ -2568,10 +2578,14 @@ static inline int formatifmac(char *buff, const int buff_size,
         return 0;
     }
 
-    dest = buff + sprintf(buff, "%02x", *hwaddr);
+    dest = buff;
+    *dest++ = g_lower_hex_chars[*hwaddr >> 4];
+    *dest++ = g_lower_hex_chars[*hwaddr & 0x0F];
     for (ptr=hwaddr+1; ptr<end; ptr++)
     {
-        dest += sprintf(dest, ":%02x", *ptr);
+        *dest++ = ':';
+        *dest++ = g_lower_hex_chars[*ptr >> 4];
+        *dest++ = g_lower_hex_chars[*ptr & 0x0F];
     }
     return dest - buff;
 }
@@ -2620,7 +2634,7 @@ static int getifmac(FastIFConfig *config)
             fc_trim(output);
             if (*output != '\0')
             {
-                snprintf(config->mac, sizeof(config->mac), "%s", output);
+                fc_safe_strcpy(config->mac, output);
             }
         }
     }
@@ -2724,7 +2738,7 @@ int getifconfigs(FastIFConfig *if_configs, const int max_count, int *count)
                         return ENOSPC;
                     }
 
-                    sprintf(config->name, "%s", ifc->ifa_name);
+                    strcpy(config->name, ifc->ifa_name);
                     (*count)++;
                 }
 

src/sockopt.h

@@ -29,6 +29,7 @@
 #include <netinet/tcp.h>
 #include <netdb.h>
 #include "common_define.h"
+#include "shared_func.h"
 
 #define FC_NET_TYPE_NONE          0
 #define FC_NET_TYPE_OUTER         1   //extranet IP
@@ -53,16 +54,6 @@
 
 #define FAST_WRITE_BUFF_SIZE  (256 * 1024)
 
-#define FC_FORMAT_IP_ADDRESS(old_ip_addr, new_ip_addr)  \
-    char new_ip_addr[FORMATTED_IP_SIZE]; \
-    do {  \
-        if (is_ipv6_addr(old_ip_addr)) { \
-            sprintf(new_ip_addr, "[%s]", old_ip_addr); \
-        } else { \
-            strcpy(new_ip_addr, old_ip_addr); \
-        } \
-    } while (0)
-
 typedef struct fast_if_config {
     char name[IF_NAMESIZE];    //if name
     char mac[64];
@@ -719,7 +710,16 @@ static inline const char *format_ip_address(const char *ip, char *buff)
 {
     if (is_ipv6_addr(ip))
     {
-        sprintf(buff, "[%s]", ip);
+        int ip_len;
+        char *p;
+
+        ip_len = strlen(ip);
+        p = buff;
+        *p++ = '[';
+        memcpy(p, ip, ip_len);
+        p += ip_len;
+        *p++ = ']';
+        *p = '\0';
     }
     else
     {
@@ -732,14 +732,26 @@ static inline const char *format_ip_address(const char *ip, char *buff)
 static inline const char *format_ip_port(const char *ip,
         const int port, char *buff)
 {
-    if (is_ipv6_addr(ip))
+    int ip_len;
+    bool is_ipv6;
+    char *p;
+
+    is_ipv6 = is_ipv6_addr(ip);
+    ip_len = strlen(ip);
+    p = buff;
+    if (is_ipv6)
     {
-        sprintf(buff, "[%s]:%u", ip, port);
+        *p++ = '[';
     }
-    else
+    memcpy(p, ip, ip_len);
+    p += ip_len;
+    if (is_ipv6)
     {
-        sprintf(buff, "%s:%u", ip, port);
+        *p++ = ']';
     }
+    *p++ = ':';
+    p += fc_itoa(port, p);
+    *p = '\0';
 
     return buff;
 }

src/spinlock.c

@@ -0,0 +1,116 @@
+/*
+ * Copyright (c) 2025 YuQing <384681@qq.com>
+ *
+ * This program is free software: you can use, redistribute, and/or modify
+ * it under the terms of the Lesser GNU General Public License, version 3
+ * or later ("LGPL"), as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * You should have received a copy of the Lesser GNU General Public License
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include "common_define.h"
+#ifdef OS_LINUX
+#include <sys/syscall.h>
+#include <linux/futex.h>
+#define FUTEX(ptr, op, val) syscall(SYS_futex, ptr, op, val, NULL, NULL, 0)
+#else
+#include "pthread_func.h"
+#endif
+
+#include "logger.h"
+#include "spinlock.h"
+
+#ifdef OS_LINUX
+static inline int fc_futex(int *ptr, int op, int val)
+{
+    if (FUTEX(ptr, op, val) == 0) {
+        return 0;
+    } else {
+        return errno != 0 ? errno : EBUSY;
+    }
+}
+#endif
+
+int fc_spinlock_init(FCSpinlock *lock, int *cond)
+{
+#ifdef OS_LINUX
+    lock->cond = cond;
+    return pthread_spin_init(&lock->mutex, 0);
+#else
+    return init_pthread_lock_cond_pair(&lock->lcp);
+#endif
+}
+
+void fc_spinlock_destroy(FCSpinlock *lock)
+{
+#ifdef OS_LINUX
+#else
+    destroy_pthread_lock_cond_pair(&lock->lcp);
+#endif
+}
+
+int fc_spinlock_lock(FCSpinlock *lock)
+{
+#ifdef OS_LINUX
+    return pthread_spin_lock(&lock->mutex);
+#else
+    return pthread_mutex_lock(&lock->lcp.lock);
+#endif
+}
+
+int fc_spinlock_trylock(FCSpinlock *lock)
+{
+#ifdef OS_LINUX
+    return pthread_spin_trylock(&lock->mutex);
+#else
+    return pthread_mutex_trylock(&lock->lcp.lock);
+#endif
+}
+
+int fc_spinlock_unlock(FCSpinlock *lock)
+{
+#ifdef OS_LINUX
+    return pthread_spin_unlock(&lock->mutex);
+#else
+    return pthread_mutex_unlock(&lock->lcp.lock);
+#endif
+}
+
+int fc_spinlock_wait(FCSpinlock *lock, const int expected)
+{
+#ifdef OS_LINUX
+    int result;
+    int lock_ret;
+
+    if ((result=pthread_spin_unlock(&lock->mutex)) != 0) {
+        return result;
+    }
+    result = fc_futex(lock->cond, FUTEX_WAIT_PRIVATE, expected);
+    lock_ret = pthread_spin_lock(&lock->mutex);
+    return result == 0 ? lock_ret : result;
+#else
+    return pthread_cond_wait(&lock->lcp.cond, &lock->lcp.lock);
+#endif
+}
+
+int fc_spinlock_wake_ex(FCSpinlock *lock, const int count)
+{
+#ifdef OS_LINUX
+    if (FUTEX(lock->cond, FUTEX_WAKE_PRIVATE, count) >= 0) {
+        return 0;
+    } else {
+        return errno != 0 ? errno : EBUSY;
+    }
+#else
+    if (count == 1) {
+        return pthread_cond_signal(&lock->lcp.cond);
+    } else {
+        return pthread_cond_broadcast(&lock->lcp.cond);
+    }
+#endif
+}

src/spinlock.h

@@ -0,0 +1,59 @@
+/*
+ * Copyright (c) 2025 YuQing <384681@qq.com>
+ *
+ * This program is free software: you can use, redistribute, and/or modify
+ * it under the terms of the Lesser GNU General Public License, version 3
+ * or later ("LGPL"), as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * You should have received a copy of the Lesser GNU General Public License
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef FC_SPINLOCK_H
+#define FC_SPINLOCK_H
+
+#include <pthread.h>
+#include "common_define.h"
+
+typedef struct fc_spinlock_t {
+#ifdef OS_LINUX
+    pthread_spinlock_t mutex;
+    int *cond;
+#else
+    pthread_lock_cond_pair_t lcp;
+#endif
+} FCSpinlock;
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+int fc_spinlock_init(FCSpinlock *lock, int *cond);
+
+void fc_spinlock_destroy(FCSpinlock *lock);
+
+int fc_spinlock_lock(FCSpinlock *lock);
+
+int fc_spinlock_trylock(FCSpinlock *lock);
+
+int fc_spinlock_unlock(FCSpinlock *lock);
+
+int fc_spinlock_wait(FCSpinlock *lock, const int expected);
+
+int fc_spinlock_wake_ex(FCSpinlock *lock, const int count);
+
+static inline int fc_spinlock_wake(FCSpinlock *lock)
+{
+    const int count = 1;
+    return fc_spinlock_wake_ex(lock, count);
+}
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif

src/system_info.c

@@ -194,9 +194,9 @@ int get_boot_time(struct timeval *boot_time)
 
 #define SET_MNT_FIELDS(left, fstypename, mntfromname, mntonname) \
     do { \
-        snprintf(left.f_fstypename, sizeof(left.f_fstypename), "%s", fstypename); \
-        snprintf(left.f_mntfromname, sizeof(left.f_mntfromname), "%s", mntfromname); \
-        snprintf(left.f_mntonname, sizeof(left.f_mntonname), "%s", mntonname); \
+        fc_safe_strcpy(left.f_fstypename, fstypename);   \
+        fc_safe_strcpy(left.f_mntfromname, mntfromname); \
+        fc_safe_strcpy(left.f_mntonname, mntonname); \
     } while (0)
 
 #ifdef OS_LINUX
@@ -286,12 +286,9 @@ int get_mounted_filesystems(struct fast_statfs *stats,
         toLowercase(fstypename);
         if (get_device_type(fstypename, &stats[*count].device_type) == 0)
         {
-            snprintf(stats[*count].f_mntfromname, sizeof(stats[*count].
-                        f_mntfromname), "%s", mntfromname);
-            snprintf(stats[*count].f_mntonname, sizeof(stats[*count].
-                        f_mntonname), "%s", mntonname);
-            snprintf(stats[*count].f_fstypename, sizeof(stats[*count].
-                        f_fstypename), "%s", fstypename);
+            fc_safe_strcpy(stats[*count].f_mntfromname, mntfromname);
+            fc_safe_strcpy(stats[*count].f_mntonname, mntonname);
+            fc_safe_strcpy(stats[*count].f_fstypename, fstypename);
             (*count)++;
         }
     }
@@ -841,8 +838,7 @@ int get_processes(struct fast_process_info **processes, int *count)
     for (i=0; i<nproc; i++)
     {
         process->field_count = 9;
-        snprintf(process->comm, sizeof(process->comm),
-                "%s", procs[i].ki_comm);
+        fc_safe_strcpy(process->comm, procs[i].ki_comm);
         process->pid = procs[i].ki_pid;
         process->ppid = procs[i].ki_ppid;
         process->starttime = procs[i].ki_start;
@@ -1041,8 +1037,7 @@ static int get_block_size_by_write(const char *path, int *block_size)
         return result;
     }
 
-    snprintf(tmp_filename, sizeof(tmp_filename),
-            "%s/.blksize-test.tmp", path);
+    fc_combine_full_filename(path, ".blksize-test.tmp", tmp_filename);
     if ((fd=open(tmp_filename, O_WRONLY | O_CREAT |
                     O_DIRECT | O_CLOEXEC, 0755)) < 0)
     {

src/tests/Makefile.in

@@ -1,8 +1,8 @@
 .SUFFIXES: .c .o
 
 COMPILE = $(CC) -g -O3 -Wall -D_FILE_OFFSET_BITS=64 -D_GNU_SOURCE -g -DDEBUG_FLAG
-INC_PATH = -I/usr/local/include
-LIB_PATH = -lfastcommon -lpthread
+INC_PATH = $(INCS)
+LIB_PATH = -lfastcommon $(LIBS)
 
 ALL_PRGS = test_allocator test_skiplist test_multi_skiplist test_mblock test_blocked_queue \
            test_id_generator test_ini_parser test_char_convert test_char_convert_loader \
@@ -11,7 +11,7 @@ ALL_PRGS = test_allocator test_skiplist test_multi_skiplist test_mblock test_blo
            test_server_id_func test_pipe test_atomic test_file_write_hole test_file_lock \
            test_pthread_wait test_thread_pool test_data_visible test_mutex_lock_perf \
            test_queue_perf test_normalize_path test_sorted_array test_sorted_queue   \
-           test_thread_local test_memcpy
+           test_thread_local test_memcpy test_fast_buffer mblock_benchmark cpool_benchmark
 
 all: $(ALL_PRGS)
 

src/tests/cpool_benchmark.c

@@ -0,0 +1,211 @@
+/*
+ * Copyright (c) 2025 YuQing <384681@qq.com>
+ *
+ * This program is free software: you can use, redistribute, and/or modify
+ * it under the terms of the Lesser GNU General Public License, version 3
+ * or later ("LGPL"), as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * You should have received a copy of the Lesser GNU General Public License
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <math.h>
+#include <time.h>
+#include <inttypes.h>
+#include <sys/types.h>
+#include <sys/time.h>
+#include <sys/stat.h>
+#include "fastcommon/logger.h"
+#include "fastcommon/shared_func.h"
+#include "fastcommon/pthread_func.h"
+#include "fastcommon/connection_pool.h"
+
+#define USE_CONN_POOL  1
+//#define USE_CAS_LOCK   1
+
+static int thread_count = 16;
+static int64_t loop_count = 10000000;
+static ConnectionPool cpool;
+static char buff[1024];
+static pthread_mutex_t lock;
+volatile int mutex = 0;
+
+#ifndef USE_CONN_POOL
+static int64_t test_var1 = 0;
+static int64_t test_var2 = 0;
+#endif
+
+static inline void conn_pool_get_key(const ConnectionInfo *conn,
+        char *key, int *key_len)
+{
+    *key_len = strlen(conn->ip_addr);
+    memcpy(key, conn->ip_addr, *key_len);
+    *(key + (*key_len)++) = '-';
+    *(key + (*key_len)++) = (conn->port >> 8) & 0xFF;
+    *(key + (*key_len)++) = conn->port & 0xFF;
+}
+
+static void *thread_run(void *args)
+{
+    int thread_index;
+    int result;
+    int64_t i;
+    ConnectionInfo cinfo;
+#ifdef USE_CONN_POOL
+    ConnectionInfo *conn;
+#endif
+
+    thread_index = (long)args;
+    printf("thread #%d start\n", thread_index);
+    
+    if ((result=conn_pool_parse_server_info("127.0.0.1", &cinfo, 23000)) != 0) {
+        return NULL;
+    }
+    for (i=0; i<loop_count; i++) {
+#ifdef USE_CONN_POOL
+        if ((conn=conn_pool_get_connection_ex(&cpool, &cinfo,
+                        NULL, true, &result)) == NULL)
+        {
+            break;
+        }
+        //fc_sleep_us(1);
+        conn_pool_close_connection(&cpool, conn);
+#else
+        char key_buff[INET6_ADDRSTRLEN + 8];
+        string_t key;
+        uint32_t hash_code;
+        for (int j=0; j<2; j++) {
+            key.str = key_buff;
+            conn_pool_get_key(&cinfo, key.str, &key.len);
+            hash_code = fc_simple_hash(key.str, key.len);
+#ifdef USE_CAS_LOCK
+            while (!__sync_bool_compare_and_swap(&mutex, 0, 1)) {
+                sched_yield();
+            }
+            __sync_fetch_and_add(&test_var1, 1);
+            __sync_fetch_and_add(&test_var2, 1);
+#else
+            PTHREAD_MUTEX_LOCK(&lock);
+            test_var1++;
+            test_var2++;
+#endif
+#ifdef USE_CAS_LOCK
+            __sync_bool_compare_and_swap(&mutex, 1, 0);
+#else
+            PTHREAD_MUTEX_UNLOCK(&lock);
+#endif
+        }
+#endif
+
+    }
+
+    if (i == loop_count) {
+        printf("thread #%d done\n", thread_index);
+    } else {
+        printf("thread #%d loop count: %"PRId64"\n", thread_index, i);
+    }
+
+    return NULL;
+}
+
+int main(int argc, char *argv[])
+{
+    const int stack_size = 64 * 1024;
+    const int connect_timeout = 2;
+    const int max_count_per_entry = 0;
+    const int max_idle_time = 3600;
+    const int htable_capacity = 163;
+    const int extra_data_size = 0;
+    int result;
+    int i;
+    int64_t qps;
+    pthread_t *tids;
+    pthread_attr_t thread_attr;
+    int64_t start_time;
+    int64_t end_time;
+    int64_t time_used;
+    ConnectionExtraParams params;
+
+    log_init();
+    g_log_context.log_level = LOG_INFO;
+    g_schedule_flag = true;
+    g_current_time = time(NULL);
+
+    memset(&params, 0, sizeof(params));
+    params.tls.enabled = false;
+    params.tls.htable_capacity = 13;
+    if ((result=conn_pool_init_ex1(&cpool, connect_timeout, max_count_per_entry,
+                    max_idle_time, htable_capacity, NULL, NULL, NULL, NULL,
+                    extra_data_size, &params)) != 0)
+    {
+        return result;
+    }
+
+
+    memset(buff, 0, sizeof(buff));
+    if ((result=init_pthread_lock(&lock)) != 0) {
+        return result;
+    }
+
+    if ((result=pthread_attr_init(&thread_attr)) != 0) {
+        logError("file: "__FILE__", line: %d, "
+                "call pthread_attr_init fail, "
+                "errno: %d, error info: %s",
+                __LINE__, result, STRERROR(result));
+        return result;
+    }
+    if ((result=pthread_attr_setstacksize(&thread_attr,
+                stack_size)) != 0)
+    {
+        logError("file: "__FILE__", line: %d, "
+                "call pthread_attr_setstacksize to %d fail, "
+                "errno: %d, error info: %s", __LINE__,
+                stack_size, result, STRERROR(result));
+        return result;
+    }
+
+    tids = fc_malloc(sizeof(pthread_t) * thread_count);
+
+    start_time = get_current_time_us();
+    for (i=0; i<thread_count; i++) {
+        if ((result=pthread_create(tids + i, &thread_attr,
+                        thread_run, (void *)((long)i))) != 0)
+        {
+            logError("file: "__FILE__", line: %d, "
+                    "create thread failed, "
+                    "errno: %d, error info: %s",
+                    __LINE__, result, STRERROR(result));
+            return result;
+        }
+    }
+
+    for (i=0; i<thread_count; i++) {
+        pthread_join(tids[i], NULL);
+    }
+
+    end_time = get_current_time_us();
+    time_used = end_time - start_time;
+    qps = (thread_count * loop_count * 1000 * 1000) / time_used;
+    printf("time used: %"PRId64" ms, QPS: %"PRId64"\n", time_used / 1000, qps);
+
+    {
+        ConnectionPoolStat stat;
+        conn_pool_stat(&cpool, &stat);
+        printf("htable_capacity: %d, bucket_used: %d, server_count: %d, "
+                "connection {total_count: %d, free_count: %d}\n",
+                stat.htable_capacity, stat.bucket_used, stat.server_count,
+                stat.connection.total_count, stat.connection.free_count);
+    }
+
+    free(tids);
+    conn_pool_destroy(&cpool);
+
+    return 0;
+}

src/tests/mblock_benchmark.c

@@ -0,0 +1,125 @@
+/*
+ * Copyright (c) 2025 YuQing <384681@qq.com>
+ *
+ * This program is free software: you can use, redistribute, and/or modify
+ * it under the terms of the Lesser GNU General Public License, version 3
+ * or later ("LGPL"), as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * You should have received a copy of the Lesser GNU General Public License
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <math.h>
+#include <time.h>
+#include <inttypes.h>
+#include <sys/types.h>
+#include <sys/time.h>
+#include <sys/stat.h>
+#include "fastcommon/logger.h"
+#include "fastcommon/shared_func.h"
+#include "fastcommon/pthread_func.h"
+#include "fastcommon/fast_mblock.h"
+
+static int thread_count = 4;
+static int64_t loop_count = 10000000;
+static struct fast_mblock_man mblock;
+
+static void *thread_run(void *args)
+{
+    int thread_index;
+    int i;
+    void *obj;
+
+    thread_index = (long)args;
+    printf("thread #%d start\n", thread_index);
+
+    for (i=0; i<loop_count; i++) {
+        obj = fast_mblock_alloc_object(&mblock);
+        fast_mblock_free_object(&mblock, obj);
+    }
+
+    printf("thread #%d done\n", thread_index);
+
+    return NULL;
+}
+
+int main(int argc, char *argv[])
+{
+    const int stack_size = 64 * 1024;
+    int result;
+    int limit;
+    int i;
+    bool continue_flag = true;
+    int64_t qps;
+    pthread_t *tids;
+    pthread_attr_t thread_attr;
+    int64_t start_time;
+    int64_t end_time;
+    int64_t time_used;
+
+    log_init();
+    g_log_context.log_level = LOG_DEBUG;
+
+    limit = (thread_count + 1) / 2;
+    fast_mblock_manager_init();
+    if ((result=fast_mblock_init_ex1(&mblock, "mblock", 1024,
+                    limit, limit, NULL, NULL, true)) != 0)
+    {
+        return result;
+    }
+    fast_mblock_set_need_wait(&mblock, true, &continue_flag);
+
+    if ((result=pthread_attr_init(&thread_attr)) != 0) {
+        logError("file: "__FILE__", line: %d, "
+                "call pthread_attr_init fail, "
+                "errno: %d, error info: %s",
+                __LINE__, result, STRERROR(result));
+        return result;
+    }
+    if ((result=pthread_attr_setstacksize(&thread_attr,
+                stack_size)) != 0)
+    {
+        logError("file: "__FILE__", line: %d, "
+                "call pthread_attr_setstacksize to %d fail, "
+                "errno: %d, error info: %s", __LINE__,
+                stack_size, result, STRERROR(result));
+        return result;
+    }
+
+    tids = fc_malloc(sizeof(pthread_t) * thread_count);
+
+    start_time = get_current_time_us();
+    for (i=0; i<thread_count; i++) {
+        if ((result=pthread_create(tids + i, &thread_attr,
+                        thread_run, (void *)((long)i))) != 0)
+        {
+            logError("file: "__FILE__", line: %d, "
+                    "create thread failed, "
+                    "errno: %d, error info: %s",
+                    __LINE__, result, STRERROR(result));
+            return result;
+        }
+    }
+
+    for (i=0; i<thread_count; i++) {
+        pthread_join(tids[i], NULL);
+    }
+
+    end_time = get_current_time_us();
+    time_used = end_time - start_time;
+    qps = (thread_count * loop_count * 1000 * 1000) / time_used;
+    printf("time used: %"PRId64" ms, QPS: %"PRId64"\n", time_used / 1000, qps);
+
+    free(tids);
+    fast_mblock_manager_stat_print(false);
+    fast_mblock_destroy(&mblock);
+
+    return 0;
+}

src/tests/test_fast_buffer.c

@@ -0,0 +1,331 @@
+/*
+ * Copyright (c) 2020 YuQing <384681@qq.com>
+ *
+ * This program is free software: you can use, redistribute, and/or modify
+ * it under the terms of the Lesser GNU General Public License, version 3
+ * or later ("LGPL"), as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * You should have received a copy of the Lesser GNU General Public License
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <math.h>
+#include <time.h>
+#include <inttypes.h>
+#include <sys/types.h>
+#include <sys/time.h>
+#include <sys/stat.h>
+#include "fastcommon/logger.h"
+#include "fastcommon/fast_buffer.h"
+#include "fastcommon/sched_thread.h"
+
+typedef enum {
+    TEST_TYPE_NONE = 0,
+    TEST_TYPE_ITOA,
+    TEST_TYPE_FTOA,
+    TEST_TYPE_INT2HEX,
+    TEST_TYPE_APPEND
+} TestType;
+
+typedef enum {
+    DA_SLICE_TYPE_FILE  = 'F', /* in file slice */
+    DA_SLICE_TYPE_CACHE = 'C', /* in memory cache */
+    DA_SLICE_TYPE_ALLOC = 'A'  /* allocate slice (index and space allocate only) */
+} DASliceType;
+
+typedef struct {
+    int64_t version;
+    uint64_t trunk_id; //0 for not inited
+    uint32_t length;   //data length
+    uint32_t offset;   //space offset
+    uint32_t size;     //space size
+} DAPieceFieldStorage;
+
+typedef struct {
+    int64_t version; //for stable sort only
+    uint64_t oid;    //object ID
+    uint64_t fid;    //field ID (key)
+    uint32_t extra;       //such as slice offset
+    char op_type;
+    DASliceType slice_type;
+    DAPieceFieldStorage storage;
+} DATrunkSpaceLogRecord;
+
+static inline void log_pack_by_append(const DATrunkSpaceLogRecord
+        *record, FastBuffer *buffer, const bool have_extra_field)
+{
+    fast_buffer_append_int64(buffer, (uint32_t)g_current_time);
+    fast_buffer_append_char(buffer, ' ');
+    fast_buffer_append_int64(buffer, record->storage.version);
+    fast_buffer_append_char(buffer, ' ');
+    fast_buffer_append_int64(buffer, record->oid);
+    fast_buffer_append_char(buffer, ' ');
+    fast_buffer_append_int64(buffer, record->fid);
+    fast_buffer_append_char(buffer, ' ');
+    fast_buffer_append_char(buffer, record->op_type);
+    fast_buffer_append_char(buffer, ' ');
+    fast_buffer_append_int64(buffer, record->storage.trunk_id);
+    fast_buffer_append_char(buffer, ' ');
+    fast_buffer_append_int64(buffer, record->storage.length);
+    fast_buffer_append_char(buffer, ' ');
+    fast_buffer_append_int64(buffer, record->storage.offset);
+    fast_buffer_append_char(buffer, ' ');
+    fast_buffer_append_int64(buffer, record->storage.size);
+    fast_buffer_append_char(buffer, ' ');
+    fast_buffer_append_char(buffer, record->slice_type);
+
+    if (have_extra_field) {
+        fast_buffer_append_char(buffer, ' ');
+        fast_buffer_append_char(buffer, record->extra);
+        fast_buffer_append_char(buffer, '\n');
+    } else {
+        fast_buffer_append_char(buffer, '\n');
+    }
+}
+
+static inline void log_pack_by_sprintf(const DATrunkSpaceLogRecord
+        *record, FastBuffer *buffer, const bool have_extra_field)
+{
+    buffer->length += sprintf(buffer->data + buffer->length,
+            "%u %"PRId64" %"PRId64" %"PRId64" %c %"PRId64" %u %u %u %c",
+            (uint32_t)g_current_time, record->storage.version,
+            record->oid, record->fid, record->op_type,
+            record->storage.trunk_id, record->storage.length,
+            record->storage.offset, record->storage.size,
+            record->slice_type);
+    if (have_extra_field) {
+        buffer->length += sprintf(buffer->data + buffer->length,
+                " %u\n", record->extra);
+    } else {
+        *(buffer->data + buffer->length++) = '\n';
+    }
+}
+
+#define BINLOG_FILENAME_PREFIX_STR  "binlog."
+#define BINLOG_FILENAME_PREFIX_LEN  (sizeof(BINLOG_FILENAME_PREFIX_STR) - 1)
+
+static inline int cache_binlog_filename_by_sprintf(
+        const char *data_path, const char *subdir_name,
+        const uint32_t subdirs, const uint64_t id,
+        char *full_filename, const int size)
+{
+    int path_index;
+    path_index = id % subdirs;
+    return sprintf(full_filename, "%s/%s/%02X/%02X/%s%08"PRIX64,
+            data_path, subdir_name, path_index, path_index,
+            BINLOG_FILENAME_PREFIX_STR, id);
+}
+
+static inline int cache_binlog_filename_by_append(
+        const char *data_path, const char *subdir_name,
+        const uint32_t subdirs, const uint64_t id,
+        char *full_filename, const int size)
+{
+    int path_index;
+    int path_len;
+    int subdir_len;
+    char *p;
+
+    path_index = id % subdirs;
+    path_len = strlen(data_path);
+    subdir_len = strlen(subdir_name);
+    p = full_filename;
+    memcpy(p, data_path, path_len);
+    p += path_len;
+    *p++ = '/';
+    memcpy(p, subdir_name, subdir_len);
+    p += subdir_len;
+    *p++ = '/';
+    *p++ = g_upper_hex_chars[(path_index >> 4) & 0x0F];
+    *p++ = g_upper_hex_chars[path_index & 0x0F];
+    *p++ = '/';
+    *p++ = g_upper_hex_chars[(path_index >> 4) & 0x0F];
+    *p++ = g_upper_hex_chars[path_index & 0x0F];
+    *p++ = '/';
+    memcpy(p, BINLOG_FILENAME_PREFIX_STR, BINLOG_FILENAME_PREFIX_LEN);
+    p += BINLOG_FILENAME_PREFIX_LEN;
+    if (id <= UINT32_MAX) {
+        p += int2HEX(id, p, 8);
+    } else {
+        p += long2HEX(id, p, 8);
+    }
+
+    return p - full_filename;
+}
+
+static void usage(const char *program)
+{
+    fprintf(stderr, "Usage: %s [-t {itoa | ftoa | int2hex | append | all}]\n",
+            program);
+}
+
+int main(int argc, char *argv[])
+{
+    const bool binary_mode = true;
+    const bool check_capacity = false;
+    const bool have_extra_field = false;
+    const int LOOP = 10 * 1000 * 1000;
+    const char *data_path = "/opt/fastcfs/fdir/data";
+    const char *subdir_name = "binlog";
+    const uint32_t subdirs = 256;
+
+    int result;
+    TestType test_type = TEST_TYPE_ITOA;
+    TestType type_start;
+    TestType type_last;
+    uint64_t id = 123456;
+    double d = 123.456;
+    int ch;
+    int i;
+    int len;
+    int64_t start_time_us;
+    int convert_time_us;
+    int sprintf_time_us;
+    double ratio;
+    FastBuffer buffer;
+    DATrunkSpaceLogRecord record;
+    char full_filename1[PATH_MAX];
+    char full_filename2[PATH_MAX];
+    char buff[32] = {0};
+    char *caption;
+
+	log_init();
+    g_current_time = time(NULL);
+    if ((result=fast_buffer_init_ex(&buffer, 256,
+                    binary_mode, check_capacity)) != 0)
+    {
+        return result;
+    }
+
+    type_start = type_last = TEST_TYPE_ITOA;
+    while ((ch=getopt(argc, argv, "ht:")) != -1) {
+        switch (ch) {
+            case 'h':
+                usage(argv[0]);
+                return 0;
+            case 't':
+                if (strcasecmp(optarg, "itoa") == 0) {
+                    type_start = type_last = TEST_TYPE_ITOA;
+                } else if (strcasecmp(optarg, "ftoa") == 0) {
+                    type_start = type_last = TEST_TYPE_FTOA;
+                } else if (strcasecmp(optarg, "int2hex") == 0) {
+                    type_start = type_last = TEST_TYPE_INT2HEX;
+                } else if (strcasecmp(optarg, "append") == 0) {
+                    type_start = type_last = TEST_TYPE_APPEND;
+                } else if (strcasecmp(optarg, "all") == 0) {
+                    type_start = TEST_TYPE_ITOA;
+                    type_last = TEST_TYPE_APPEND;
+                } else {
+                    fprintf(stderr, "invalid type: %s\n", optarg);
+                    return EINVAL;
+                }
+                break;
+            default:
+                usage(argv[0]);
+                return EINVAL;
+        }
+    }
+
+    for (test_type=type_start; test_type<=type_last; test_type++) {
+        if (test_type == TEST_TYPE_APPEND) {
+            memset(&record, 0, sizeof(record));
+            record.op_type = 'C';
+            record.slice_type = DA_SLICE_TYPE_FILE;
+            record.storage.version = 1111;
+            record.oid = 9007211709265131LL;
+            record.fid = 0;
+            record.storage.trunk_id = 61;
+            record.storage.length = 62;
+            record.storage.offset = 12345;
+            record.storage.size = 64;
+        }
+
+        start_time_us = get_current_time_us();
+        for (i=0; i<LOOP; i++) {
+            switch (test_type) {
+                case TEST_TYPE_APPEND:
+                    cache_binlog_filename_by_sprintf(data_path, subdir_name,
+                            subdirs, ++id, full_filename1, sizeof(full_filename1));
+                    fast_buffer_reset(&buffer);
+                    log_pack_by_sprintf(&record, &buffer, have_extra_field);
+                    break;
+                case TEST_TYPE_ITOA:
+                    sprintf(buff, "%"PRId64, id);
+                    break;
+                case TEST_TYPE_FTOA:
+                    sprintf(buff, "%.2f", d);
+                    break;
+                case TEST_TYPE_INT2HEX:
+                    sprintf(buff, "%x", (int)id);
+                    break;
+                default:
+                    break;
+            }
+        }
+        sprintf_time_us = (get_current_time_us() - start_time_us);
+
+        start_time_us = get_current_time_us();
+        for (i=0; i<LOOP; i++) {
+            switch (test_type) {
+                case TEST_TYPE_APPEND:
+                    cache_binlog_filename_by_append(data_path, subdir_name,
+                            subdirs, ++id, full_filename2, sizeof(full_filename2));
+                    fast_buffer_reset(&buffer);
+                    log_pack_by_append(&record, &buffer, have_extra_field);
+                    break;
+                case TEST_TYPE_ITOA:
+                    len = fc_itoa(id, buff);
+                    *(buff + len) = '\0';
+                    break;
+                case TEST_TYPE_FTOA:
+                    len = fc_ftoa(d, 2, buff);
+                    *(buff + len) = '\0';
+                    break;
+                case TEST_TYPE_INT2HEX:
+                    int2hex(id, buff, 0);
+                    break;
+                default:
+                    break;
+            }
+        }
+        convert_time_us = (get_current_time_us() - start_time_us);
+
+        if (convert_time_us > 0) {
+            ratio = (double)sprintf_time_us / (double)convert_time_us;
+        } else {
+            ratio = 1.0;
+        }
+
+        switch (test_type) {
+            case TEST_TYPE_ITOA:
+                caption = "itoa";
+                break;
+            case TEST_TYPE_FTOA:
+                caption = "ftoa";
+                break;
+            case TEST_TYPE_INT2HEX:
+                caption = "int2hex";
+                break;
+            case TEST_TYPE_APPEND:
+                caption = "append";
+                break;
+            default:
+                caption = "unkown";
+                break;
+        }
+        printf("sprintf time: %d ms, %s time: %d ms, "
+                "sprintf time / %s time: %d%%\n",
+                sprintf_time_us / 1000, caption, convert_time_us / 1000,
+                caption, (int)(ratio * 100.00));
+    }
+
+    fast_buffer_destroy(&buffer);
+	return 0;
+}

src/tests/test_file_lock.c

@@ -25,6 +25,7 @@
 #include <sys/file.h>
 #include "fastcommon/logger.h"
 #include "fastcommon/shared_func.h"
+#include "fastcommon/pthread_func.h"
 
 #define OneArgument(a) printf("One Argument func is called!\n")
 #define TwoArguments(a, b) printf("Two Arguments func is called!\n")
@@ -36,7 +37,6 @@ static inline int get_lock_info(int fd, struct flock *lock)
 {
     int result;
 
-    memset(lock, 0, sizeof(struct flock));
     lock->l_whence = SEEK_SET;
     lock->l_type = F_WRLCK;
     lock->l_pid = getpid();
@@ -53,6 +53,69 @@ static inline int get_lock_info(int fd, struct flock *lock)
     return result;
 }
 
+static inline int set_lock(int fd, const int operation,
+        const int start, const int length)
+{
+    int result;
+     struct flock lock;
+
+    memset(&lock, 0, sizeof(struct flock));
+    lock.l_whence = SEEK_SET;
+    lock.l_type = operation;
+    lock.l_start = start;
+    lock.l_len = length;
+    lock.l_pid = getpid();
+    do {
+        if ((result=fcntl(fd, F_SETLKW, &lock)) != 0)
+        {
+            result = errno != 0 ? errno : ENOMEM;
+            fprintf(stderr, "line: %d, call fcntl fail, "
+                   "errno: %d, error info: %s\n", __LINE__,
+                   result, STRERROR(result));
+        } else {
+            printf("line: %d, call fcntl %d result: %d\n",
+                    __LINE__, operation, result);
+        }
+    } while (result == EINTR);
+
+    return result;
+}
+
+static void *unlock_thread(void *args)
+{
+    char *filename;
+    int result;
+    int fd;
+    struct flock lock;
+
+    filename = (char *)args;
+    fd = open(filename, O_RDWR | O_CREAT, 0644);
+    if (fd < 0) {
+        result = errno != 0 ? errno : EIO;
+        logError("file: "__FILE__", line: %d, "
+                "open file %s fail, "
+                "errno: %d, error info: %s",
+                __LINE__, filename,
+                result, STRERROR(result));
+        return NULL;
+    }
+
+    memset(&lock, 0, sizeof(struct flock));
+    lock.l_start = 100;
+    if ((result=get_lock_info(fd, &lock)) == 0) {
+        logInfo("lock info: { type: %d, whence: %d, start: %"PRId64", "
+                "len: %"PRId64", pid: %d }",
+                lock.l_type, lock.l_whence, (int64_t)lock.l_start,
+                (int64_t)lock.l_len, lock.l_pid);
+    }
+
+    //set_lock(fd, F_WRLCK, 0, 0);
+    sleep(5);
+    //set_lock(fd, F_UNLCK, 0, 0);
+    close(fd);
+    return NULL;
+}
+
 int main(int argc, char *argv[])
 {
 #define SEEK_POS   (2 * 1024)
@@ -61,12 +124,15 @@ int main(int argc, char *argv[])
     int result;
     int sleep_seconds;
     int n = 0;
+    pthread_t tid;
     char buf[1024];
     struct flock lock;
 
     Macro(1);
     Macro(1, 2);
     Macro(1, 2, 3);
+
+    printf("%0*d\n", 3, 1);
     if (argc < 2) {
         fprintf(stderr, "Usage: %s <filename>\n", argv[0]);
         return 1;
@@ -80,7 +146,7 @@ int main(int argc, char *argv[])
         sleep_seconds = 1;
     }
 
-    fd = open(filename, O_RDWR | O_CREAT, 0644);
+    fd = open(filename, O_RDWR | O_CREAT | O_CLOEXEC, 0644);
     if (fd < 0) {
         result = errno != 0 ? errno : EIO;
         logError("file: "__FILE__", line: %d, "
@@ -91,6 +157,61 @@ int main(int argc, char *argv[])
         return result;
     }
 
+    {
+    int flags;
+    flags = fcntl(fd, F_GETFD, 0);
+    if (flags < 0)
+    {
+        logError("file: "__FILE__", line: %d, " \
+            "fcntl failed, errno: %d, error info: %s.", \
+            __LINE__, errno, STRERROR(errno));
+        return errno != 0 ? errno : EACCES;
+    }
+
+    printf("flags: %d, on: %d\n", flags, (flags & FD_CLOEXEC));
+
+    if (fcntl(fd, F_SETFD, flags | FD_CLOEXEC) < 0)
+    {
+        logError("file: "__FILE__", line: %d, " \
+            "fcntl failed, errno: %d, error info: %s.", \
+            __LINE__, errno, STRERROR(errno));
+        return errno != 0 ? errno : EACCES;
+    }
+    flags = fcntl(fd, F_GETFD, 0);
+    printf("flags: %d, on: %d\n", flags, (flags & FD_CLOEXEC));
+    }
+
+
+    fork();
+
+    memset(&lock, 0, sizeof(struct flock));
+    lock.l_start = 1024;
+    if ((result=get_lock_info(fd, &lock)) == 0) {
+        logInfo("pid: %d, lock info: { type: %d, whence: %d, "
+                "start: %"PRId64", len: %"PRId64", pid: %d }", getpid(),
+                lock.l_type, lock.l_whence, (int64_t)lock.l_start,
+                (int64_t)lock.l_len, lock.l_pid);
+    }
+
+    set_lock(fd, F_WRLCK, 0, 10);
+    set_lock(fd, F_WRLCK, 10, 10);
+    set_lock(fd, F_WRLCK, 30, 10);
+    //set_lock(fd, F_WRLCK, 0, 0);
+    //set_lock(fd, F_UNLCK, 0, 10);
+    //set_lock(fd, F_UNLCK, 5, 35);
+
+    fc_create_thread(&tid, unlock_thread, filename, 64 * 1024);
+
+    sleep(100);
+    memset(&lock, 0, sizeof(struct flock));
+    lock.l_start = 100;
+    if ((result=get_lock_info(fd, &lock)) == 0) {
+        logInfo("lock info: { type: %d, whence: %d, start: %"PRId64", "
+                "len: %"PRId64", pid: %d }",
+                lock.l_type, lock.l_whence, (int64_t)lock.l_start,
+                (int64_t)lock.l_len, lock.l_pid);
+    }
+
     if (flock(fd, LOCK_EX) < 0) {
         logError("file: "__FILE__", line: %d, "
                 "flock file %s fail, "

src/tests/test_file_write_hole.c

@@ -32,6 +32,7 @@ int main(int argc, char *argv[])
     int fd;
     int result;
     int n;
+    int i;
     char buf[1024];
 
     if (argc < 2) {
@@ -50,7 +51,7 @@ int main(int argc, char *argv[])
     */
 
     //fd = open(filename, O_RDWR | O_CREAT | O_TRUNC, 0644);
-    fd = open(filename, O_RDWR | O_CREAT, 0644);
+    fd = open(filename, O_RDWR | O_CREAT | O_APPEND, 0644);
     if (fd < 0) {
         result = errno != 0 ? errno : EIO;
         logError("file: "__FILE__", line: %d, " \
@@ -69,7 +70,8 @@ int main(int argc, char *argv[])
         return errno != 0 ? errno : EIO;
     }
 
-    if (lseek(fd, SEEK_POS, SEEK_SET) < 0) {
+    for (i=0; i<5; i++) {
+    if (lseek(fd, 0, SEEK_SET) < 0) {
         logError("file: "__FILE__", line: %d, " \
             "lseek file %s fail, " \
             "errno: %d, error info: %s", __LINE__, \
@@ -86,6 +88,7 @@ int main(int argc, char *argv[])
         return errno != 0 ? errno : EIO;
     }
     printf("write bytes: %d\n", n);
+    }
 
     if (lseek(fd, 0, SEEK_SET) < 0) {
         logError("file: "__FILE__", line: %d, " \

src/tests/test_logger.c

@@ -22,6 +22,7 @@
 #include <sys/types.h>
 #include <sys/time.h>
 #include <sys/stat.h>
+#include <sys/file.h>
 #include "fastcommon/logger.h"
 
 int main(int argc, char *argv[])
@@ -36,6 +37,15 @@ int main(int argc, char *argv[])
     log_take_over_stdout();
     log_set_compress_log_flags(LOG_COMPRESS_FLAGS_ENABLED | LOG_COMPRESS_FLAGS_NEW_THREAD);
 
+    log_set_filename("/opt/fastcfs/fuse/test.log");
+
+
+    if (flock(g_log_context.log_fd, LOCK_EX) != 0) {
+        logError("flock fail");
+    }
+
+    flock(g_log_context.log_fd, LOCK_UN);
+    
     printf("sizeof(LogContext): %d, time_precision: %d, compress_log_flags: %d, "
             "use_file_write_lock: %d\n", (int)sizeof(LogContext),
             g_log_context.time_precision,
@@ -46,7 +56,7 @@ int main(int argc, char *argv[])
             "by log_it_ex, timestamp: %d", (int)time(NULL));
 
     len = sprintf(buff, "this is by log_it_ex1, "
-            "timestamp: %d", (int)time(NULL));
+            "timestamp: %ld", (long)time(NULL));
     log_it_ex1(&g_log_context, LOG_INFO, buff, len);
 
 	return 0;

src/tests/test_mblock.c

@@ -162,7 +162,7 @@ int main(int argc, char *argv[])
     printf("cpu count: %d\n", get_sys_cpu_count());
 
     end_time = get_current_time_ms();
-    logInfo("time used: %d ms", (int)(end_time - start_time));
+    logInfo("time used: %d ms\n", (int)(end_time - start_time));
 
     fast_mblock_manager_init();
 
@@ -182,19 +182,33 @@ int main(int argc, char *argv[])
         sched_add_delay_task(test_delay, objs + i, delay, false);
     }
 
+    printf("mblock1 total count: %"PRId64", free count: %u\n",
+        fast_mblock_total_count(&mblock1),
+        fast_mblock_free_count(&mblock1));
+
     /*
     for (i=0; i<count; i++)
     {
-        fast_mblock_free_object(&mblock1, objs[i]);
+        fast_mblock_free_object(objs[i].mblock, objs[i].obj);
     }
     */
 
     obj1 = fast_mblock_alloc_object(&mblock1);
     obj2 = fast_mblock_alloc_object(&mblock1);
     fast_mblock_free_object(&mblock1, obj1);
+
+
+    printf("mblock1 total count: %"PRId64", free count: %u\n",
+        fast_mblock_total_count(&mblock1),
+        fast_mblock_free_count(&mblock1));
+
     //fast_mblock_delay_free_object(&mblock1, obj2, 10);
     fast_mblock_free_object(&mblock1, obj2);
 
+    printf("mblock1 total count: %"PRId64", free count: %u\n\n",
+        fast_mblock_total_count(&mblock1),
+        fast_mblock_free_count(&mblock1));
+
     obj1 = fast_mblock_alloc_object(&mblock2);
     obj2 = fast_mblock_alloc_object(&mblock2);
     fast_mblock_delay_free_object(&mblock2, obj1, 20);
@@ -206,6 +220,13 @@ int main(int argc, char *argv[])
     fast_mblock_reclaim(&mblock1, reclaim_target, &reclaim_count, NULL);
     fast_mblock_reclaim(&mblock2, reclaim_target, &reclaim_count, NULL);
 
+    printf("\nmblock1 total count: %"PRId64", free count: %u, "
+            "mblock2 total count: %"PRId64", free count: %u\n\n",
+            fast_mblock_total_count(&mblock1),
+            fast_mblock_free_count(&mblock1),
+            fast_mblock_total_count(&mblock2),
+            fast_mblock_free_count(&mblock2));
+
     fast_mblock_manager_stat_print(false);
 
     sleep(31);
@@ -217,11 +238,25 @@ int main(int argc, char *argv[])
     fast_mblock_reclaim(&mblock1, reclaim_target, &reclaim_count, NULL);
     fast_mblock_reclaim(&mblock2, reclaim_target, &reclaim_count, NULL);
 
+    printf("\nmblock1 total count: %"PRId64", free count: %u, "
+            "mblock2 total count: %"PRId64", free count: %u\n\n",
+            fast_mblock_total_count(&mblock1),
+            fast_mblock_free_count(&mblock1),
+            fast_mblock_total_count(&mblock2),
+            fast_mblock_free_count(&mblock2));
+
     fast_mblock_manager_stat_print(false);
 
     obj1 = fast_mblock_alloc_object(&mblock1);
     obj2 = fast_mblock_alloc_object(&mblock2);
 
+    printf("mblock1 total count: %"PRId64", free count: %u, "
+            "mblock2 total count: %"PRId64", free count: %u\n\n",
+            fast_mblock_total_count(&mblock1),
+            fast_mblock_free_count(&mblock1),
+            fast_mblock_total_count(&mblock2),
+            fast_mblock_free_count(&mblock2));
+
     fast_mblock_manager_stat_print(false);
 
     fast_mblock_destroy(&mblock1);

src/tests/test_queue_perf.c

@@ -84,6 +84,56 @@ static void sigQuitHandler(int sig)
             __LINE__, sig);
 }
 
+static void test_remove()
+{
+#define COUNT 8
+    typedef struct node {
+        int n;
+        struct node *next;
+    } Node;
+    struct fc_queue queue;
+    Node nodes[COUNT];
+    Node *node;
+    Node *end;
+    int result;
+
+    if ((result=fc_queue_init(&queue, (long)&((Node *)NULL)->next)) != 0)
+    {
+        return;
+    }
+
+    fc_queue_push(&queue, nodes);
+    printf("remove: %d\n", fc_queue_remove(&queue, nodes + 1));
+    printf("remove: %d\n", fc_queue_remove(&queue, nodes + 2));
+    printf("remove: %d\n", fc_queue_remove(&queue, nodes));
+    printf("count: %d\n", fc_queue_count(&queue));
+
+    end = nodes + COUNT / 2;
+    for (node=nodes; node<end; node++) {
+        node->n = (node - nodes) + 1;
+        fc_queue_push(&queue, node);
+    }
+
+    printf("remove: %d\n", fc_queue_remove(&queue, node));
+    printf("remove: %d\n", fc_queue_remove(&queue, node - 1));
+    printf("remove: %d\n", fc_queue_remove(&queue, node - 3));
+    printf("remove: %d\n", fc_queue_remove(&queue, nodes));
+
+    end = nodes + COUNT;
+    for (; node<end; node++) {
+        node->n = (node - nodes) + 1;
+        fc_queue_push(&queue, node);
+    }
+    printf("count: %d\n\n", fc_queue_count(&queue));
+
+    for (node=end-1; node>=nodes; node--) {
+        printf("remove: %d\n", fc_queue_remove(&queue, node));
+        fc_queue_push(&queue, node);
+    }
+
+    printf("count: %d\n", fc_queue_count(&queue));
+}
+
 int main(int argc, char *argv[])
 {
     const int alloc_elements_once = 8 * 1024;
@@ -107,6 +157,9 @@ int main(int argc, char *argv[])
     log_init();
     g_log_context.log_level = LOG_DEBUG;
 
+    test_remove();
+    return 0;
+
     memset(&act, 0, sizeof(act));
     sigemptyset(&act.sa_mask);
     act.sa_handler = sigQuitHandler;

src/tests/test_server_id_func.c

@@ -112,7 +112,7 @@ int main(int argc, char *argv[])
 
     setup_mblock_stat_task();
 
-    if ((result=fast_buffer_init_ex(&buffer, 1024)) != 0) {
+    if ((result=fast_buffer_init1(&buffer, 1024)) != 0) {
         return result;
     }
     fc_server_to_config_string(&ctx, &buffer);

src/thread_pool.c

@@ -210,7 +210,7 @@ int fc_thread_pool_init_ex(FCThreadPool *pool, const char *name,
         return result;
     }
 
-    snprintf(pool->name, sizeof(pool->name), "%s", name);
+    fc_safe_strcpy(pool->name, name);
     pool->stack_size = stack_size;
     pool->max_idle_time = max_idle_time;
     if (min_idle_count > limit) {