add function fc_memrchr

HISTORY

@@ -1,9 +1,11 @@
 
-Version 1.44  2020-02-03
+Version 1.44  2020-02-08
   * add test file src/tests/test_pthread_lock.c
   * add uniq_skiplist.[hc]
   * add function split_string_ex
   * fast_mblock.[hc]: add init_args for init_func
+  * struct fast_task_info add field: nio_stage
+  * add function fc_memrchr
 
 Version 1.43  2019-12-25
   * replace function call system to getExecResult,

src/fast_task_queue.h

@@ -56,6 +56,7 @@ struct fast_task_info
 	int size;   //alloc size
 	int length; //data length
 	int offset; //current offset
+    char nio_stage;  //stage for network IO
 	int64_t req_count; //request count
 	TaskFinishCallback finish_callback;
 	struct nio_thread_data *thread_data;

src/shared_func.c

@@ -2854,6 +2854,23 @@ const char *fc_memmem(const string_t *str, const string_t *needle)
     return NULL;
 }
 
+const char *fc_memrchr(const char *str, const int ch, const int len)
+{
+    const char *p;
+
+    p = str + len - 1;
+    while (p >= str)
+    {
+        if (*p == ch)
+        {
+            return p;
+        }
+        --p;
+    }
+
+    return NULL;
+}
+
 char *format_http_date(time_t t, BufferInfo *buffer)
 {
     struct tm tm_info;

src/shared_func.h

@@ -844,6 +844,14 @@ char *fc_strdup(const char *str, const int len);
 */
 const char *fc_memmem(const string_t *str, const string_t *needle);
 
+/** memmem
+ *  parameters:
+ *  	str: the string to match
+ *      needle: the needle string
+ *  return: the matched string, NULL for fail
+*/
+const char *fc_memrchr(const char *str, const int ch, const int len);
+
 /** format HTTP Date as: Sat, 11 Mar 2017 21:49:51 GMT
  *  parameters:
  *  	t: the time to format

src/uniq_skiplist.h

@@ -55,6 +55,8 @@ typedef struct uniq_skiplist_iterator {
 extern "C" {
 #endif
 
+#define uniq_skiplist_count(sl) (sl)->element_count
+
 #define uniq_skiplist_init(factory, max_level_count, compare_func, free_func) \
     uniq_skiplist_init_ex(factory, max_level_count,  \
             compare_func, free_func, 64 * 1024, \