1 files changed, 41 insertions, 41 deletions

diff --git a/examples/libc/sem.c b/examples/libc/sem.c
index d081d246e9..438a76b7f1 100644
--- a/examples/libc/sem.c
+++ b/examples/libc/sem.c
@@ -5,61 +5,61 @@
 static sem_t sema;
 static void* other_thread()
 {
-	printf("other_thread here!\n");
+    printf("other_thread here!\n");
 
-	sleep(1);
+    sleep(1);
 
-	while (1)
-	{
-		printf("other_thread: sem_post...\n");
-		if(sem_post(&sema) == -1)
-			printf("sem_post failed\n");
-		sleep(1);
-	}
-	
-	printf("other_thread dies!\n");
-	pthread_exit(0);
+    while (1)
+    {
+        printf("other_thread: sem_post...\n");
+        if(sem_post(&sema) == -1)
+            printf("sem_post failed\n");
+        sleep(1);
+    }
+
+    printf("other_thread dies!\n");
+    pthread_exit(0);
 }
 
 static void test_thread(void* parameter)
 {
-	pthread_t tid;
+    pthread_t tid;
+
+    printf("main thread here!\n");
+    printf("sleep 5 seconds...");
+    sleep(5);
+    printf("done\n");
 
-	printf("main thread here!\n");
-	printf("sleep 5 seconds...");	
-	sleep(5);
-	printf("done\n");
+    sem_init(&sema, 0, 0);
 
-	sem_init(&sema, 0, 0);
-	
-	/* create the "other" thread */
-	if(pthread_create(&tid, 0, &other_thread, 0)!=0)
-		/* error */
-		printf("pthread_create OtherThread failed.\n");
-	else
-		printf("created OtherThread=%x\n", tid);
+    /* create the "other" thread */
+    if(pthread_create(&tid, 0, &other_thread, 0)!=0)
+        /* error */
+        printf("pthread_create OtherThread failed.\n");
+    else
+        printf("created OtherThread=%x\n", tid);
 
-	/* let the other thread run */
-	while (1)
-	{
-		printf("Main: sem_wait...\n");
-		if(sem_wait(&sema) == -1)
-			printf("sem_wait failed\n");
-		printf("Main back.\n\n");
-	}
+    /* let the other thread run */
+    while (1)
+    {
+        printf("Main: sem_wait...\n");
+        if(sem_wait(&sema) == -1)
+            printf("sem_wait failed\n");
+        printf("Main back.\n\n");
+    }
 
-	pthread_exit(0);
+    pthread_exit(0);
 }
 #include <finsh.h>
 void libc_sem()
 {
-	rt_thread_t tid;
+    rt_thread_t tid;
 
-	tid = rt_thread_create("semtest", test_thread, RT_NULL, 
-		2048, 20, 5);
-	if (tid != RT_NULL)
-	{
-		rt_thread_startup(tid);
-	}
+    tid = rt_thread_create("semtest", test_thread, RT_NULL,
+        2048, 20, 5);
+    if (tid != RT_NULL)
+    {
+        rt_thread_startup(tid);
+    }
 }
 FINSH_FUNCTION_EXPORT(libc_sem, posix semaphore test);