diff --git a/HISTORY b/HISTORY
index 890799f..d495ac6 100644
--- a/HISTORY
+++ b/HISTORY
@@ -1,5 +1,5 @@
 
-Version 1.44  2020-09-08
+Version 1.44  2020-09-12
   * add test file src/tests/test_pthread_lock.c
   * add uniq_skiplist.[hc]
   * add function split_string_ex
diff --git a/src/sched_thread.c b/src/sched_thread.c
index 154b613..c6546da 100644
--- a/src/sched_thread.c
+++ b/src/sched_thread.c
@@ -467,13 +467,13 @@ static void *sched_thread_entrance(void *args)
                 }
                 else
                 {
-                    usleep(1*1000);
+                    fc_sleep_ms(1);
                     for (i=1; !pCurrent->thread_running && i<100; i++)
                     {
                         logDebug("file: "__FILE__", line: %d, "
                                 "task_id: %d, waiting thread ready, count %d",
                                 __LINE__, pCurrent->id, i);
-                        usleep(1*1000);
+                        fc_sleep_ms(1);
                     }
                 }
             }
@@ -642,7 +642,7 @@ int sched_add_entries(const ScheduleArray *pScheduleArray)
                         "schedule_flag: %d ...", __LINE__,
                         __sync_add_and_fetch(&g_schedule_flag, 0));
             }
-            else if (++i == 10)
+            else if (++i == 300)
             {
                 logError("file: "__FILE__", line: %d, "
                         "waiting for schedule array ready timeout, "
@@ -650,7 +650,7 @@ int sched_add_entries(const ScheduleArray *pScheduleArray)
                         __sync_add_and_fetch(&g_schedule_flag, 0), i);
                 break;
             }
-            sleep(1);
+            fc_sleep_ms(10);
         }
     }
 
@@ -908,13 +908,13 @@ static void deal_timeout_tasks(ScheduleContext *pContext, FastTimerEntry *head)
             }
             else
             {
-               usleep(1*1000);
+               fc_sleep_ms(1);
                for (i=1; !task->thread_running && i<100; i++)
                {
                    logDebug("file: "__FILE__", line: %d, "
                            "task args: %p, waiting thread ready, count %d",
                            __LINE__, task->func_args, i);
-                   usleep(1*1000);
+                   fc_sleep_ms(1);
                }
             }
         }
diff --git a/src/shared_func.h b/src/shared_func.h
index 263f49a..ebccb7c 100644
--- a/src/shared_func.h
+++ b/src/shared_func.h
@@ -11,6 +11,7 @@
 
 #include <stdio.h>
 #include <stdlib.h>
+#include <time.h>
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <sys/time.h>
@@ -987,6 +988,24 @@ int fc_get_last_line(const char *filename, char *buff,
 bool fc_path_contains(const string_t *path, const string_t *needle,
         int *result);
 
+
+/** sleep in milliseconds
+ *  parameters:
+ *      milliseconds: milliseconds to sleep
+ *  return: 0 for success, != 0 for fail
+*/
+static inline int fc_sleep_ms(const int milliseconds)
+{
+    struct timespec ts;
+    ts.tv_sec = milliseconds / 1000;
+    ts.tv_nsec = (milliseconds % 1000) * (1000 * 1000);
+    if (nanosleep(&ts, NULL) == 0) {
+        return 0;
+    } else {
+        return errno != 0 ? errno : EINVAL;
+    }
+}
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/src/tests/test_mblock.c b/src/tests/test_mblock.c
index 9826ecf..c511e30 100644
--- a/src/tests/test_mblock.c
+++ b/src/tests/test_mblock.c
@@ -165,10 +165,8 @@ int main(int argc, char *argv[])
 
     fast_mblock_manager_init();
 
-    fast_mblock_init_ex2(&mblock1, "mblock1", 1024, 128, NULL, NULL,
-            false, NULL, NULL, NULL);
-    fast_mblock_init_ex2(&mblock2, "mblock2", 1024, 100, NULL, NULL,
-            false, NULL, NULL, NULL);
+    fast_mblock_init_ex1(&mblock1, "mblock1", 1024, 128, 0, NULL, NULL, false);
+    fast_mblock_init_ex1(&mblock2, "mblock2", 1024, 100, 0, NULL, NULL, false);
    
     count = 2048;
     objs = (struct my_struct *)malloc(sizeof(struct my_struct) * count);
diff --git a/src/tests/test_thread_pool.c b/src/tests/test_thread_pool.c
index 9e3384f..e15581f 100644
--- a/src/tests/test_thread_pool.c
+++ b/src/tests/test_thread_pool.c
@@ -19,7 +19,7 @@ static volatile int64_t total = 0;
 
 #define TASK_COUNT 10
 
-void thread2_func(void *args)
+void thread2_func(void *args, void *thread_data)
 {
     int i;
     for (i=0; i<LOOP_COUNT; i++) {
@@ -28,7 +28,7 @@ void thread2_func(void *args)
     }
 }
 
-void thread1_func(void *args)
+void thread1_func(void *args, void *thread_data)
 {
     int i;
     for (i=0; i<LOOP_COUNT; i++) {
@@ -37,7 +37,7 @@ void thread1_func(void *args)
     }
 }
 
-void wait_thread_func(void *args)
+void wait_thread_func(void *args, void *thread_data)
 {
     int i;
     for (i=0; i<LOOP_COUNT; i++) {
@@ -108,8 +108,9 @@ int main(int argc, char *argv[])
 	g_log_context.log_level = LOG_DEBUG;
 	
 	start_time = get_current_time_ms();
-    if ((result=fc_thread_pool_init(&pool, limit, stack_size, max_idle_time,
-                    min_idle_count, (bool * volatile)&continue_flag)) != 0)
+    if ((result=fc_thread_pool_init(&pool, "test", limit, stack_size,
+                    max_idle_time, min_idle_count,
+                    (bool * volatile)&continue_flag)) != 0)
     {
         return result;
     }