diff --git a/HISTORY b/HISTORY
index 0832899..ee0c79e 100644
--- a/HISTORY
+++ b/HISTORY
@@ -1,5 +1,5 @@
 
-Version 1.49  2021-04-07
+Version 1.49  2021-04-09
   * add macros: FC_ABS and FC_NEGATIVE
   * uniq_skiplist.c: add uniq_skiplist_pair struct and init function
   * add functions: fc_mkdirs and str_replace
@@ -7,6 +7,7 @@ Version 1.49  2021-04-07
   * add functions: fc_string_case_compare, fc_string_case_equal etc.
   * add function: fc_check_filename_ex
   * add functions: fc_queue_push_queue_to_tail etc.
+  * add file locked_list.h
 
 Version 1.48  2021-02-01
   * fast_buffer.[hc]: add function fast_buffer_append_binary
diff --git a/src/Makefile.in b/src/Makefile.in
index be3bbef..b5d7477 100644
--- a/src/Makefile.in
+++ b/src/Makefile.in
@@ -42,8 +42,9 @@ HEADER_FILES = common_define.h hash.h chain.h logger.h base64.h \
                php7_ext_wrapper.h id_generator.h char_converter.h \
 			   char_convert_loader.h common_blocked_queue.h  \
                multi_socket_client.h skiplist_set.h uniq_skiplist.h \
-               fc_list.h json_parser.h buffered_file_writer.h server_id_func.h \
-               fc_queue.h fc_memory.h shared_buffer.h thread_pool.h fc_atomic.h
+               fc_list.h locked_list.h json_parser.h buffered_file_writer.h \
+               server_id_func.h fc_queue.h fc_memory.h shared_buffer.h \
+               thread_pool.h fc_atomic.h
 
 ALL_OBJS = $(FAST_STATIC_OBJS) $(FAST_SHARED_OBJS)
 
diff --git a/src/locked_list.h b/src/locked_list.h
new file mode 100644
index 0000000..0faceee
--- /dev/null
+++ b/src/locked_list.h
@@ -0,0 +1,55 @@
+#ifndef _LOCKED_LIST_H
+#define _LOCKED_LIST_H
+
+#include "fc_list.h"
+#include "pthread_func.h"
+
+typedef struct fc_locked_list {
+    struct fc_list_head head;
+    pthread_mutex_t lock;
+} FCLockedList;
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+    static inline int locked_list_init(FCLockedList *list)
+    {
+        int result;
+        if ((result=init_pthread_lock(&list->lock)) != 0) {
+            return result;
+        }
+
+        FC_INIT_LIST_HEAD(&list->head);
+        return 0;
+    }
+
+    static inline void locked_list_add(struct fc_list_head *_new,
+            FCLockedList *list)
+    {
+        PTHREAD_MUTEX_LOCK(&list->lock);
+        fc_list_add(_new, &list->head);
+        PTHREAD_MUTEX_UNLOCK(&list->lock);
+    }
+
+    static inline void locked_list_add_tail(struct fc_list_head *_new,
+            FCLockedList *list)
+    {
+        PTHREAD_MUTEX_LOCK(&list->lock);
+        fc_list_add_tail(_new, &list->head);
+        PTHREAD_MUTEX_UNLOCK(&list->lock);
+    }
+
+    static inline void locked_list_del(struct fc_list_head *old,
+            FCLockedList *list)
+    {
+        PTHREAD_MUTEX_LOCK(&list->lock);
+        fc_list_del_init(old);
+        PTHREAD_MUTEX_UNLOCK(&list->lock);
+    }
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif