diff --git a/components/pthreads/SConscript b/components/pthreads/SConscript
index 9fe796d22..5f017aea1 100644
--- a/components/pthreads/SConscript
+++ b/components/pthreads/SConscript
@@ -1,7 +1,20 @@
 Import('RTT_ROOT')
 from building import *
 
-src	= Glob('*.c')
+src	= Split('''
+clock_time.c
+pthread.c
+pthread_attr.c
+pthread_barrier.c
+pthread_cond.c
+pthread_internal.c
+pthread_mutex.c
+pthread_rwlock.c
+pthread_spin.c
+pthread_tls.c
+sched.c
+semaphore.c
+''')
 CPPPATH = [RTT_ROOT + '/components/pthreads']
 group = DefineGroup('pthreads', src, depend = ['RT_USING_PTHREADS'], CPPPATH = CPPPATH)
 
diff --git a/components/pthreads/clock_time.c b/components/pthreads/clock_time.c
new file mode 100644
index 000000000..4884d07fb
--- /dev/null
+++ b/components/pthreads/clock_time.c
@@ -0,0 +1,27 @@
+#include <rtthread.h>
+#include "pthread_internal.h"
+#include <time.h>
+
+int clock_getres(clockid_t clock_id, struct timespec *res)
+{
+	if ((clock_id != CLOCK_REALTIME) || (res == RT_NULL))
+	{
+		rt_set_errno(EINVAL);
+		return -1;
+	}
+
+	res->tv_sec  = 0;
+	res->tv_nsec = NSEC_PER_TICK;
+
+	return 0;
+}
+
+int clock_gettime(clockid_t clock_id, struct timespec *tp)
+{
+	return 0;
+}
+
+int clock_settime(clockid_t clock_id, const struct timespec *tp)
+{
+	return 0;
+}
diff --git a/components/pthreads/mqueue.c b/components/pthreads/mqueue.c
new file mode 100644
index 000000000..849f5348e
--- /dev/null
+++ b/components/pthreads/mqueue.c
@@ -0,0 +1,150 @@
+#include "mqueue.h"
+#include <stdargs.h>
+#include "pthread_internal.h"
+
+int mq_setattr(mqd_t mqdes, const struct mq_attr *mqstat,
+		struct mq_attr *omqstat)
+{
+	rt_set_errno(-RT_ERROR);
+	return -1;
+}
+
+int mq_getattr(mqd_t mqdes, struct mq_attr *mqstat)
+{
+	if ((mqdes == RT_NULL) || mqstat == RT_NULL)
+	{
+		rt_set_errno(EBADF);
+		return -1;
+	}
+
+	mqstat->mq_maxmsg = mqdes->max_msgs;
+	mqstat->mq_msgsize = mqdes->msg_size;
+	mqstat->mq_curmsgs = 0;
+	mqstat->mq_flags = 0;
+
+	return 0;
+}
+
+mqd_t mq_open(const char *name, int oflag, ...)
+{
+	rt_mq_t mq;
+	va_list arg;
+	mode_t mode;
+	struct mq_attr *attr = RT_NULL;
+
+	if (oflag & O_CREAT)
+	{
+	    va_start(arg, oflag);
+	    mode = (mode_t) va_arg(arg, unsigned int);
+	    attr = (struct mq_attr *) va_arg(arg, struct mq_attr *);
+	    va_end(arg);
+
+		mq = rt_mq_create(name, attr->mq_msgsize, attr->mq_maxmsg, RT_IPC_FLAG_FIFO);
+		if (mq == RT_NULL) /* create failed */
+		{
+			rt_set_errno(ENFILE);
+			return RT_NULL;
+		}
+	}
+
+	if (oflag & O_EXCL)
+	{
+		mq = (rt_mq_t)rt_object_find(name, RT_Object_Class_MessageQueue);
+		if (mq == RT_NULL) rt_set_errno(ENOSPC);
+	}
+
+	return mq;
+}
+
+ssize_t mq_receive(mqd_t mqdes, char *msg_ptr, size_t msg_len, unsigned *msg_prio)
+{
+	rt_err_t result;
+
+	if ((mqdes == RT_NULL) || (msg_ptr == RT_NULL))
+	{
+		rt_set_errno(EINVAL);
+		return -1;
+	}
+
+	result = rt_mq_recv(mqdes, msg_ptr, msg_len, RT_WAITING_FOREVER);
+	if (result == RT_EOK)
+		return msg_len;
+
+	rt_set_errno(EBADF);
+	return -1;
+}
+
+int mq_send(mqd_t mqdes, const char *msg_ptr, size_t msg_len, unsigned msg_prio)
+{
+	rt_err_t result;
+
+	if ((mqdes == RT_NULL) || (msg_ptr == RT_NULL))
+	{
+		rt_set_errno(EINVAL);
+		return -1;
+	}
+
+	result = rt_mq_send(mqdes, msg_ptr, msg_len);
+	if (result == RT_EOK)
+		return 0;
+
+	rt_set_errno(EBADF);
+	return -1;
+}
+
+ssize_t mq_timedreceive(mqd_t mqdes, char *msg_ptr, size_t msg_len,
+	unsigned *msg_prio, const struct timespec *abs_timeout)
+{
+	int tick;
+	rt_err_t result;
+
+	if ((mqdes == RT_NULL) || (msg_ptr == RT_NULL))
+	{
+		rt_set_errno(EINVAL);
+		return -1;
+	}
+	tick = time_to_tick(abs_timeout);
+
+	result = rt_mq_recv(mqdes, msg_ptr, msg_len, tick);
+	if (result == RT_EOK) return msg_len;
+
+	if (result == -RT_ETIMEOUT)
+		rt_set_errno(ETIMEOUT);
+	else
+		rt_set_errno(EBADMSG);
+
+	return -1;
+}
+
+int mq_timedsend(mqd_t mqdes, const char *msg_ptr, size_t msg_len, unsigned msg_prio,
+		const struct timespec *abs_timeout)
+{
+	/* RT-Thread does not support timed send */
+	return mq_send(mqdes, msg_ptr, msg_len, msg_prio);
+}
+
+int mq_notify(mqd_t mqdes, const struct sigevent *notification)
+{
+	rt_set_errno(-RT_ERROT);
+	return -1;
+}
+
+int mq_close(mqd_t mqdes)
+{
+	return 0;
+}
+
+int mq_unlink(const char *name)
+{
+	rt_mq_t mq;
+
+	mq = (rt_mq_t)rt_object_find(name, RT_Object_Class_MessageQueue);
+	if (mq == RT_NULL)
+	{
+		rt_set_errno(ENOENT);
+		return -1;
+	}
+
+	rt_mq_delete(mq);
+	return 0;
+}
diff --git a/components/pthreads/mqueue.h b/components/pthreads/mqueue.h
new file mode 100644
index 000000000..901b1bed5
--- /dev/null
+++ b/components/pthreads/mqueue.h
@@ -0,0 +1,33 @@
+#ifndef __MQUEUE_H__
+#define __MQUEUE_H__
+
+#include <rtthread.h>
+#include <sys/types.h>
+#include <sys/time.h>
+#include <signal.h>
+
+typedef rt_mq_t mqd_t;
+struct mq_attr
+{
+	long mq_flags; 		/* Message queue flags. */
+	long mq_maxmsg; 	/* Maximum number of messages. */
+	long mq_msgsize; 	/* Maximum message size. */
+	long mq_curmsgs; 	/* Number of messages currently queued. */
+};
+
+int      mq_close(mqd_t mqdes);
+int      mq_getattr(mqd_t mqdes, struct mq_attr *mqstat);
+int      mq_notify(mqd_t mqdes, const struct sigevent *notification);
+mqd_t    mq_open(const char *name, int oflag, ...);
+ssize_t  mq_receive(mqd_t mqdes, char *msg_ptr, size_t msg_len, unsigned *msg_prio);
+int      mq_send(mqd_t mqdes, const char *msg_ptr, size_t msg_len, unsigned msg_prio);
+int      mq_setattr(mqd_t mqdes, const struct mq_attr *mqstat,
+             struct mq_attr *omqstat);
+ssize_t  mq_timedreceive(mqd_t mqdes, char *msg_ptr, size_t msg_len,
+             unsigned *msg_prio, const struct timespec *abs_timeout);
+int      mq_timedsend(mqd_t mqdes, const char *msg_ptr, size_t msg_len, unsigned msg_prio,
+             const struct timespec *abs_timeout);
+
+int      mq_unlink(const char *name);
+
+#endif
diff --git a/components/pthreads/pthread_internal.h b/components/pthreads/pthread_internal.h
index 9f3210569..47c745e69 100644
--- a/components/pthreads/pthread_internal.h
+++ b/components/pthreads/pthread_internal.h
@@ -53,4 +53,6 @@ rt_inline _pthread_data_t* _pthread_get_data(pthread_t thread)
 	return (_pthread_data_t*)thread->user_data;
 }
 
+#define NSEC_PER_TICK	(1000000000UL/RT_TICK_PER_SECOND)
+
 #endif
diff --git a/components/pthreads/semaphore.c b/components/pthreads/semaphore.c
index 8fbf243c7..f80e0f8ec 100644
--- a/components/pthreads/semaphore.c
+++ b/components/pthreads/semaphore.c
@@ -58,16 +58,12 @@ int sem_init(sem_t *sem, int pshared, unsigned int value)
 	return ENOSPC;
 }
 
-/* introduce from kservice.c */
-#define rt_list_entry(node, type, member) \
-    ((type *)((char *)(node) - (unsigned long)(&((type *)0)->member)))
-
 sem_t *sem_open(const char *name, int oflag, ...)
 {
 	rt_sem_t sem;
 
 	sem = RT_NULL;
-	if (oflag == O_CREAT)
+	if (oflag & O_CREAT)
 	{
 		sem = rt_sem_create(name, 1, RT_IPC_FLAG_FIFO);
 		if (sem == RT_NULL)
@@ -75,35 +71,10 @@ sem_t *sem_open(const char *name, int oflag, ...)
 	}
 
 	/* find semaphore */
-	if (oflag == O_EXCL)
+	if (oflag & O_EXCL)
 	{
-		struct rt_object* object;
-		struct rt_list_node* node;
-		struct rt_object_information *information;
-		extern struct rt_object_information rt_object_container[];
-
-		/* enter critical */
-		rt_enter_critical();
-
-		/* try to find device object */
-		information = &rt_object_container[RT_Object_Class_Semaphore];
-		for (node = information->object_list.next; node != &(information->object_list); node = node->next)
-		{
-			object = rt_list_entry(node, struct rt_object, list);
-			if (rt_strncmp(object->name, name, RT_NAME_MAX) == 0)
-			{
-				/* leave critical */
-				rt_exit_critical();
-
-				return (rt_sem_t)object;
-			}
-		}
-
-		/* leave critical */
-		rt_exit_critical();
-		rt_set_errno(ENOENT);
-
-		return RT_NULL;
+		sem = (rt_sem_t)rt_object_find(name, RT_Object_Class_Semaphore);
+		if (sem == RT_NULL) rt_set_errno(ENOSPC);
 	}
 
 	return sem;