diff --git a/connection/connection.c b/connection/connection.c
index a975820e..7aea2afb 100644
--- a/connection/connection.c
+++ b/connection/connection.c
@@ -73,7 +73,7 @@ connection_deletepool(struct connection_pool * pool) {
 #if HAVE_EPOLL
 	close(pool->epoll_fd);
 #elif HAVE_KQUEUE
-    close(pool->kqueue_fd);
+	close(pool->kqueue_fd);
 #endif
 	free(pool);
 }
diff --git a/lualib-src/lua-skynet.c b/lualib-src/lua-skynet.c
index b6378431..6d979a0f 100644
--- a/lualib-src/lua-skynet.c
+++ b/lualib-src/lua-skynet.c
@@ -35,11 +35,11 @@ _stat_begin(struct stat *S, struct timespec *ti) {
 #if defined(_POSIX_TIMERS) && defined(_POSIX_THREAD_CPUTIME)
 	clock_gettime(CLOCK_THREAD_CPUTIME_ID, ti);
 #elif  defined(__APPLE__)
-    struct task_thread_times_info aTaskInfo;
-    mach_msg_type_number_t aTaskInfoCount = TASK_THREAD_TIMES_INFO_COUNT;
-    assert(KERN_SUCCESS == task_info(mach_task_self(), TASK_THREAD_TIMES_INFO, (task_info_t )&aTaskInfo, &aTaskInfoCount));
-    ti->tv_sec = aTaskInfo.user_time.seconds;
-    ti->tv_nsec = aTaskInfo.user_time.microseconds * 1000;
+	struct task_thread_times_info aTaskInfo;
+	mach_msg_type_number_t aTaskInfoCount = TASK_THREAD_TIMES_INFO_COUNT;
+	assert(KERN_SUCCESS == task_info(mach_task_self(), TASK_THREAD_TIMES_INFO, (task_info_t )&aTaskInfo, &aTaskInfoCount));
+	ti->tv_sec = aTaskInfo.user_time.seconds;
+	ti->tv_nsec = aTaskInfo.user_time.microseconds * 1000;
 #endif
 }
 
diff --git a/lualib-src/trace_service.c b/lualib-src/trace_service.c
index 227beee8..a4d43a21 100644
--- a/lualib-src/trace_service.c
+++ b/lualib-src/trace_service.c
@@ -19,11 +19,11 @@ diff_time(struct timespec *ti, uint32_t *sec, uint32_t *nsec) {
 #if defined(_POSIX_TIMERS) && defined(_POSIX_THREAD_CPUTIME)
 	clock_gettime(CLOCK_THREAD_CPUTIME_ID, &end);
 #elif  defined(__APPLE__)
-    struct task_thread_times_info aTaskInfo;
-    mach_msg_type_number_t aTaskInfoCount = TASK_THREAD_TIMES_INFO_COUNT;
-    assert(KERN_SUCCESS == task_info(mach_task_self(), TASK_THREAD_TIMES_INFO, (task_info_t )&aTaskInfo, &aTaskInfoCount));
-    end.tv_sec = aTaskInfo.user_time.seconds;
-    end.tv_nsec = aTaskInfo.user_time.microseconds * 1000;
+	struct task_thread_times_info aTaskInfo;
+	mach_msg_type_number_t aTaskInfoCount = TASK_THREAD_TIMES_INFO_COUNT;
+	assert(KERN_SUCCESS == task_info(mach_task_self(), TASK_THREAD_TIMES_INFO, (task_info_t )&aTaskInfo, &aTaskInfoCount));
+	end.tv_sec = aTaskInfo.user_time.seconds;
+	end.tv_nsec = aTaskInfo.user_time.microseconds * 1000;
 #endif
 	int diffsec = end.tv_sec - ti->tv_sec;
 	assert(diffsec>=0);
@@ -92,11 +92,11 @@ trace_new(struct trace_pool *p) {
 #if defined(_POSIX_TIMERS) && defined(_POSIX_THREAD_CPUTIME)
 	clock_gettime(CLOCK_THREAD_CPUTIME_ID, &t->ti);
 #elif  defined(__APPLE__)
-    struct task_thread_times_info aTaskInfo;
-    mach_msg_type_number_t aTaskInfoCount = TASK_THREAD_TIMES_INFO_COUNT;
-    assert(KERN_SUCCESS == task_info(mach_task_self(), TASK_THREAD_TIMES_INFO, (task_info_t )&aTaskInfo, &aTaskInfoCount));
-    t->ti.tv_sec = aTaskInfo.user_time.seconds;
-    t->ti.tv_nsec = aTaskInfo.user_time.microseconds * 1000;
+	struct task_thread_times_info aTaskInfo;
+	mach_msg_type_number_t aTaskInfoCount = TASK_THREAD_TIMES_INFO_COUNT;
+	assert(KERN_SUCCESS == task_info(mach_task_self(), TASK_THREAD_TIMES_INFO, (task_info_t )&aTaskInfo, &aTaskInfoCount));
+	t->ti.tv_sec = aTaskInfo.user_time.seconds;
+	t->ti.tv_nsec = aTaskInfo.user_time.microseconds * 1000;
 #endif
 	return t;
 }
@@ -152,13 +152,13 @@ trace_switch(struct trace_pool *p, int session) {
 				t->next->prev = prev;
 			}
 #if defined(_POSIX_TIMERS) && defined(_POSIX_THREAD_CPUTIME)
-            clock_gettime(CLOCK_THREAD_CPUTIME_ID, &t->ti);
+			clock_gettime(CLOCK_THREAD_CPUTIME_ID, &t->ti);
 #elif  defined(__APPLE__)
-            struct task_thread_times_info aTaskInfo;
-            mach_msg_type_number_t aTaskInfoCount = TASK_THREAD_TIMES_INFO_COUNT;
-            assert(KERN_SUCCESS == task_info(mach_task_self(), TASK_THREAD_TIMES_INFO, (task_info_t )&aTaskInfo, &aTaskInfoCount));
-            t->ti.tv_sec = aTaskInfo.user_time.seconds;
-            t->ti.tv_nsec = aTaskInfo.user_time.microseconds * 1000;
+			struct task_thread_times_info aTaskInfo;
+			mach_msg_type_number_t aTaskInfoCount = TASK_THREAD_TIMES_INFO_COUNT;
+			assert(KERN_SUCCESS == task_info(mach_task_self(), TASK_THREAD_TIMES_INFO, (task_info_t )&aTaskInfo, &aTaskInfoCount));
+			t->ti.tv_sec = aTaskInfo.user_time.seconds;
+			t->ti.tv_nsec = aTaskInfo.user_time.microseconds * 1000;
 #endif
 			return;
 		}
diff --git a/skynet-src/skynet_timer.c b/skynet-src/skynet_timer.c
index bebd79c3..a8bfe8b9 100644
--- a/skynet-src/skynet_timer.c
+++ b/skynet-src/skynet_timer.c
@@ -202,17 +202,17 @@ skynet_timeout(uint32_t handle, int time, int session) {
 
 static uint32_t
 _gettime(void) {
-    uint32_t t;
+	uint32_t t;
 #if defined(_POSIX_TIMERS)
 	struct timespec ti;
 	clock_gettime(CLOCK_MONOTONIC, &ti);
-    t = (uint32_t)(ti.tv_sec & 0xffffff) * 100;
+	t = (uint32_t)(ti.tv_sec & 0xffffff) * 100;
 	t += ti.tv_nsec / 10000000;
 #else
-    struct timeval tv;
-    gettimeofday(&tv, NULL);
-    t = (uint32_t)(tv.tv_sec & 0xffffff) * 100;
-    t += tv.tv_usec / 10000;
+	struct timeval tv;
+	gettimeofday(&tv, NULL);
+	t = (uint32_t)(tv.tv_sec & 0xffffff) * 100;
+	t += tv.tv_usec / 10000;
 #endif
 	return t;
 }
@@ -250,9 +250,9 @@ skynet_timer_init(void) {
 	clock_gettime(CLOCK_REALTIME, &ti);
 	uint32_t sec = (uint32_t)ti.tv_sec;
 #else
-    struct timeval tv;
-    gettimeofday(&tv, NULL);
-    uint32_t sec = (uint32_t)tv.tv_sec;
+	struct timeval tv;
+	gettimeofday(&tv, NULL);
+	uint32_t sec = (uint32_t)tv.tv_sec;
 #endif
 	uint32_t mono = _gettime() / 100;