rewrite posix semaphore and mqueue implementation.

git-svn-id: https://rt-thread.googlecode.com/svn/trunk@1103 bbd45198-f89e-11dd-88c7-29a3b14d5316

components/pthreads/mqueue.h

@@ -7,7 +7,26 @@
 #include <sys/signal.h>
 #include <pthread.h>
 
-typedef rt_mq_t mqd_t;
+struct posix_mq
+{
+	/* reference count and unlinked */
+	rt_uint16_t refcount;
+	rt_uint16_t unlinked;
+
+	/* RT-Thread message queue */
+	rt_mq_t mq;
+	/* next posix mqueue */
+	struct posix_mq* next;
+};
+typedef struct posix_mq posix_mq_t;
+
+struct mqdes
+{
+	rt_uint32_t flags;
+	posix_mq_t* mq;
+};
+typedef struct mqdes* mqd_t;
+
 struct mq_attr
 {
 	long mq_flags; 		/* Message queue flags. */

components/pthreads/pthread.c

@@ -6,6 +6,10 @@ int pthread_system_init(void)
 {
 	/* initialize key area */
 	pthread_key_system_init();
+	/* initialize posix mqueue */
+	posix_mq_system_init();
+	/* initialize posix semaphore */
+	posix_sem_system_init();
 
 	return 0;
 }

components/pthreads/pthread_internal.h

@@ -54,5 +54,7 @@ rt_inline _pthread_data_t* _pthread_get_data(pthread_t thread)
 }
 
 extern int libc_time_to_tick(const struct timespec *time);
+void posix_mq_system_init(void);
+void posix_sem_system_init(void);
 
 #endif

components/pthreads/semaphore.h

@@ -4,7 +4,27 @@
 #include <rtthread.h>
 #include <sys/time.h>
 
-typedef struct rt_semaphore sem_t;
+struct posix_sem
+{
+	/* reference count and unlinked */
+	rt_uint16_t refcount;
+	rt_uint8_t unlinked;
+	rt_uint8_t unamed;
+
+	/* RT-Thread semaphore */
+	rt_sem_t sem;
+
+	/* next posix semaphore */
+	struct posix_sem* next;
+};
+typedef struct posix_sem posix_sem_t;
+
+struct semdes
+{
+	rt_uint32_t flags;
+	posix_sem_t* sem;
+};
+typedef struct semdes sem_t;
 
 int sem_close(sem_t *sem);
 int sem_destroy(sem_t *sem);