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add a blocking mailbox post function 

git-svn-id: https://rt-thread.googlecode.com/svn/trunk@1471 bbd45198-f89e-11dd-88c7-29a3b14d5316
This commit is contained in:
mbbill@gmail.com 2011-06-08 16:40:07 +00:00
parent d15319c408
commit 252bc41a2c
2 changed files with 154 additions and 53 deletions
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2
include/rtdef.h
View File

@ -489,6 +489,8 @@ struct rt_mailbox
rt_uint16_t entry; /**< index of messages in msg_pool. */ rt_uint16_t entry; /**< index of messages in msg_pool. */
rt_uint16_t in_offset, out_offset; /**< in/output offset of the message buffer. */ rt_uint16_t in_offset, out_offset; /**< in/output offset of the message buffer. */
rt_list_t suspend_sender_thread; /**< sender thread suspended on this mb */
}; };
typedef struct rt_mailbox* rt_mailbox_t; typedef struct rt_mailbox* rt_mailbox_t;
#endif #endif

195
src/ipc.c
View File

@ -71,23 +71,23 @@ rt_inline rt_err_t rt_ipc_object_init(struct rt_ipc_object *ipc)
} }
/** /**
* This function will suspend a thread for a specified IPC object and put the * This function will suspend a thread to a specified list. IPC object or some double-queue
* thread into suspend queue of IPC object * object (mailbox etc.) contains this kind of list.
* *
* @param ipc the IPC object * @param ipc the IPC object
* @param thread the thread object to be suspended * @param thread the thread object to be suspended
* *
* @return the operation status, RT_EOK on successful * @return the operation status, RT_EOK on successful
*/ */
rt_inline rt_err_t rt_ipc_object_suspend(struct rt_ipc_object *ipc, struct rt_thread *thread) rt_inline rt_err_t rt_ipc_list_suspend(rt_list_t *list, struct rt_thread *thread, rt_uint8_t flag)
{ {
/* suspend thread */ /* suspend thread */
rt_thread_suspend(thread); rt_thread_suspend(thread);
switch (ipc->parent.flag) switch (flag)
{ {
case RT_IPC_FLAG_FIFO: case RT_IPC_FLAG_FIFO:
rt_list_insert_before(&(ipc->suspend_thread), &(thread->tlist)); rt_list_insert_before(list, &(thread->tlist));
break; break;
case RT_IPC_FLAG_PRIO: case RT_IPC_FLAG_PRIO:
@ -96,8 +96,7 @@ rt_inline rt_err_t rt_ipc_object_suspend(struct rt_ipc_object *ipc, struct rt_th
struct rt_thread* sthread; struct rt_thread* sthread;
/* find a suitable position */ /* find a suitable position */
for (n = ipc->suspend_thread.next; n != &(ipc->suspend_thread); for (n = list->next; n != list; n = n->next)
n = n->next)
{ {
sthread = rt_list_entry(n, struct rt_thread, tlist); sthread = rt_list_entry(n, struct rt_thread, tlist);
@ -111,8 +110,8 @@ rt_inline rt_err_t rt_ipc_object_suspend(struct rt_ipc_object *ipc, struct rt_th
} }
/* not found a suitable position, append to the end of suspend_thread list */ /* not found a suitable position, append to the end of suspend_thread list */
if (n == &(ipc->suspend_thread)) if (n == list)
rt_list_insert_before(&(ipc->suspend_thread), &(thread->tlist)); rt_list_insert_before(list, &(thread->tlist));
} }
break; break;
} }
@ -121,20 +120,20 @@ rt_inline rt_err_t rt_ipc_object_suspend(struct rt_ipc_object *ipc, struct rt_th
} }
/** /**
* This function will resume a thread from an IPC object: * This function will resume the first thread in the list of a IPC object:
* - remove the thread from suspend queue of IPC object * - remove the thread from suspend queue of IPC object
* - put the thread into system ready queue * - put the thread into system ready queue
* *
* @param ipc the IPC object * @param list the thread list
* *
* @return the operation status, RT_EOK on successful * @return the operation status, RT_EOK on successful
*/ */
rt_inline rt_err_t rt_ipc_object_resume(struct rt_ipc_object* ipc) rt_inline rt_err_t rt_ipc_list_resume(rt_list_t *list)
{ {
struct rt_thread *thread; struct rt_thread *thread;
/* get thread entry */ /* get thread entry */
thread = rt_list_entry(ipc->suspend_thread.next, struct rt_thread, tlist); thread = rt_list_entry(list->next, struct rt_thread, tlist);
#ifdef RT_IPC_DEBUG #ifdef RT_IPC_DEBUG
rt_kprintf("resume thread:%s\n", thread->name); rt_kprintf("resume thread:%s\n", thread->name);
@ -147,25 +146,26 @@ rt_inline rt_err_t rt_ipc_object_resume(struct rt_ipc_object* ipc)
} }
/** /**
* This function will resume all suspended threads in an IPC object. * This function will resume all suspended threads in a list, including
* suspend list of IPC object and private list of mailbox etc.
* *
* @param ipc the IPC object * @param list of the threads to resume
* *
* @return the operation status, RT_EOK on successful * @return the operation status, RT_EOK on successful
*/ */
rt_inline rt_err_t rt_ipc_object_resume_all(struct rt_ipc_object* ipc) rt_inline rt_err_t rt_ipc_list_resume_all(rt_list_t *list)
{ {
struct rt_thread* thread; struct rt_thread* thread;
register rt_ubase_t temp; register rt_ubase_t temp;
/* wakeup all suspend threads */ /* wakeup all suspend threads */
while (!rt_list_isempty(&(ipc->suspend_thread))) while (!rt_list_isempty(list))
{ {
/* disable interrupt */ /* disable interrupt */
temp = rt_hw_interrupt_disable(); temp = rt_hw_interrupt_disable();
/* get next suspend thread */ /* get next suspend thread */
thread = rt_list_entry(ipc->suspend_thread.next, struct rt_thread, tlist); thread = rt_list_entry(list->next, struct rt_thread, tlist);
/* set error code to RT_ERROR */ /* set error code to RT_ERROR */
thread->error = -RT_ERROR; thread->error = -RT_ERROR;
@ -229,7 +229,7 @@ rt_err_t rt_sem_detach (rt_sem_t sem)
RT_ASSERT(sem != RT_NULL); RT_ASSERT(sem != RT_NULL);
/* wakeup all suspend threads */ /* wakeup all suspend threads */
rt_ipc_object_resume_all(&(sem->parent)); rt_ipc_list_resume_all(&(sem->parent.suspend_thread));
/* detach semaphore object */ /* detach semaphore object */
rt_object_detach(&(sem->parent.parent)); rt_object_detach(&(sem->parent.parent));
@ -283,7 +283,7 @@ rt_err_t rt_sem_delete (rt_sem_t sem)
RT_ASSERT(sem != RT_NULL); RT_ASSERT(sem != RT_NULL);
/* wakeup all suspend threads */ /* wakeup all suspend threads */
rt_ipc_object_resume_all(&(sem->parent)); rt_ipc_list_resume_all(&(sem->parent.suspend_thread));
/* delete semaphore object */ /* delete semaphore object */
rt_object_delete(&(sem->parent.parent)); rt_object_delete(&(sem->parent.parent));
@ -315,7 +315,7 @@ rt_err_t rt_sem_take (rt_sem_t sem, rt_int32_t time)
/* disable interrupt */ /* disable interrupt */
temp = rt_hw_interrupt_disable(); temp = rt_hw_interrupt_disable();
#ifdef RT_IPC_DEBUG #ifdef RT_IPC_DEBU
rt_kprintf("thread %s take sem:%s, which value is: %d\n", rt_thread_self()->name, rt_kprintf("thread %s take sem:%s, which value is: %d\n", rt_thread_self()->name,
((struct rt_object*)sem)->name, sem->value); ((struct rt_object*)sem)->name, sem->value);
#endif #endif
@ -349,7 +349,8 @@ rt_err_t rt_sem_take (rt_sem_t sem, rt_int32_t time)
#endif #endif
/* suspend thread */ /* suspend thread */
rt_ipc_object_suspend(&(sem->parent), thread); rt_ipc_list_suspend(&(sem->parent.suspend_thread),
thread, sem->parent.parent.flag);
/* has waiting time, start thread timer */ /* has waiting time, start thread timer */
if (time > 0) if (time > 0)
@ -424,7 +425,7 @@ rt_err_t rt_sem_release(rt_sem_t sem)
if ( !rt_list_isempty(&sem->parent.suspend_thread) ) if ( !rt_list_isempty(&sem->parent.suspend_thread) )
{ {
/* resume the suspended thread */ /* resume the suspended thread */
rt_ipc_object_resume(&(sem->parent)); rt_ipc_list_resume(&(sem->parent.suspend_thread));
need_schedule = RT_TRUE; need_schedule = RT_TRUE;
} }
else sem->value ++; /* increase value */ else sem->value ++; /* increase value */
@ -462,7 +463,7 @@ rt_err_t rt_sem_control(rt_sem_t sem, rt_uint8_t cmd, void* arg)
level = rt_hw_interrupt_disable(); level = rt_hw_interrupt_disable();
/* resume all waiting thread */ /* resume all waiting thread */
rt_ipc_object_resume_all(&sem->parent); rt_ipc_list_resume_all(&sem->parent.suspend_thread);
/* set new value */ /* set new value */
sem->value = (rt_uint16_t)value; sem->value = (rt_uint16_t)value;
@ -525,7 +526,7 @@ rt_err_t rt_mutex_detach (rt_mutex_t mutex)
RT_ASSERT(mutex != RT_NULL); RT_ASSERT(mutex != RT_NULL);
/* wakeup all suspend threads */ /* wakeup all suspend threads */
rt_ipc_object_resume_all(&(mutex->parent)); rt_ipc_list_resume_all(&(mutex->parent.suspend_thread));
/* detach semaphore object */ /* detach semaphore object */
rt_object_detach(&(mutex->parent.parent)); rt_object_detach(&(mutex->parent.parent));
@ -580,7 +581,7 @@ rt_err_t rt_mutex_delete (rt_mutex_t mutex)
RT_ASSERT(mutex != RT_NULL); RT_ASSERT(mutex != RT_NULL);
/* wakeup all suspend threads */ /* wakeup all suspend threads */
rt_ipc_object_resume_all(&(mutex->parent)); rt_ipc_list_resume_all(&(mutex->parent.suspend_thread));
/* delete semaphore object */ /* delete semaphore object */
rt_object_delete(&(mutex->parent.parent)); rt_object_delete(&(mutex->parent.parent));
@ -671,7 +672,8 @@ rt_err_t rt_mutex_take (rt_mutex_t mutex, rt_int32_t time)
} }
/* suspend current thread */ /* suspend current thread */
rt_ipc_object_suspend(&(mutex->parent), thread); rt_ipc_list_suspend(&(mutex->parent.suspend_thread),
thread, mutex->parent.parent.flag);
/* has waiting time, start thread timer */ /* has waiting time, start thread timer */
if (time > 0) if (time > 0)
@ -784,7 +786,7 @@ rt_err_t rt_mutex_release(rt_mutex_t mutex)
mutex->hold ++; mutex->hold ++;
/* resume thread */ /* resume thread */
rt_ipc_object_resume(&(mutex->parent)); rt_ipc_list_resume(&(mutex->parent.suspend_thread));
need_schedule = RT_TRUE; need_schedule = RT_TRUE;
} }
@ -868,7 +870,7 @@ rt_err_t rt_event_detach(rt_event_t event)
RT_ASSERT(event != RT_NULL); RT_ASSERT(event != RT_NULL);
/* resume all suspended thread */ /* resume all suspended thread */
rt_ipc_object_resume_all(&(event->parent)); rt_ipc_list_resume_all(&(event->parent.suspend_thread));
/* detach event object */ /* detach event object */
rt_object_detach(&(event->parent.parent)); rt_object_detach(&(event->parent.parent));
@ -918,7 +920,7 @@ rt_err_t rt_event_delete (rt_event_t event)
RT_ASSERT(event != RT_NULL); RT_ASSERT(event != RT_NULL);
/* resume all suspended thread */ /* resume all suspended thread */
rt_ipc_object_resume_all(&(event->parent)); rt_ipc_list_resume_all(&(event->parent.suspend_thread));
/* delete event object */ /* delete event object */
rt_object_delete(&(event->parent.parent)); rt_object_delete(&(event->parent.parent));
@ -1085,7 +1087,8 @@ rt_err_t rt_event_recv(rt_event_t event, rt_uint32_t set, rt_uint8_t option, rt_
thread->event_info = option; thread->event_info = option;
/* put thread to suspended thread list */ /* put thread to suspended thread list */
rt_ipc_object_suspend(&(event->parent), thread); rt_ipc_list_suspend(&(event->parent.suspend_thread),
thread, event->parent.parent.flag);
/* if there is a waiting timeout, active thread timer */ /* if there is a waiting timeout, active thread timer */
if (timeout > 0) if (timeout > 0)
@ -1144,7 +1147,7 @@ rt_err_t rt_event_control (rt_event_t event, rt_uint8_t cmd, void* arg)
level = rt_hw_interrupt_disable(); level = rt_hw_interrupt_disable();
/* resume all waiting thread */ /* resume all waiting thread */
rt_ipc_object_resume_all(&event->parent); rt_ipc_list_resume_all(&event->parent.suspend_thread);
/* init event set */ /* init event set */
event->set = 0; event->set = 0;
@ -1194,6 +1197,8 @@ rt_err_t rt_mb_init(rt_mailbox_t mb, const char* name, void* msgpool, rt_size_t
mb->in_offset = 0; mb->in_offset = 0;
mb->out_offset = 0; mb->out_offset = 0;
rt_list_init(&(mb->suspend_sender_thread));
return RT_EOK; return RT_EOK;
} }
@ -1210,7 +1215,9 @@ rt_err_t rt_mb_detach(rt_mailbox_t mb)
RT_ASSERT(mb != RT_NULL); RT_ASSERT(mb != RT_NULL);
/* resume all suspended thread */ /* resume all suspended thread */
rt_ipc_object_resume_all(&(mb->parent)); rt_ipc_list_resume_all(&(mb->parent.suspend_thread));
/* also resume all mailbox private suspended thread */
rt_ipc_list_resume_all(&(mb->suspend_sender_thread));
/* detach mailbox object */ /* detach mailbox object */
rt_object_detach(&(mb->parent.parent)); rt_object_detach(&(mb->parent.parent));
@ -1272,7 +1279,9 @@ rt_err_t rt_mb_delete (rt_mailbox_t mb)
RT_ASSERT(mb != RT_NULL); RT_ASSERT(mb != RT_NULL);
/* resume all suspended thread */ /* resume all suspended thread */
rt_ipc_object_resume_all(&(mb->parent)); rt_ipc_list_resume_all(&(mb->parent.suspend_thread));
/* also resume all mailbox private suspended thread */
rt_ipc_list_resume_all(&(mb->suspend_sender_thread));
#ifdef RT_USING_MODULE #ifdef RT_USING_MODULE
/* the mb object belongs to an application module */ /* the mb object belongs to an application module */
@ -1292,17 +1301,20 @@ rt_err_t rt_mb_delete (rt_mailbox_t mb)
#endif #endif
/** /**
* This function will send a mail to mailbox object, if there are threads suspended * This function will send a mail to mailbox object. If the mailbox is full,
* on mailbox object, it will be waked up. * current thread will be suspended until timeout.
* *
* @param mb the mailbox object * @param mb the mailbox object
* @param value the mail * @param value the mail
* @param timeout the waiting time
* *
* @return the error code * @return the error code
*/ */
rt_err_t rt_mb_send (rt_mailbox_t mb, rt_uint32_t value) rt_err_t rt_mb_send_wait (rt_mailbox_t mb, rt_uint32_t value, rt_int32_t timeout)
{ {
struct rt_thread *thread;
register rt_ubase_t temp; register rt_ubase_t temp;
rt_uint32_t tick_delta;
/* parameter check */ /* parameter check */
RT_ASSERT(mb != RT_NULL); RT_ASSERT(mb != RT_NULL);
@ -1314,15 +1326,69 @@ rt_err_t rt_mb_send (rt_mailbox_t mb, rt_uint32_t value)
/* disable interrupt */ /* disable interrupt */
temp = rt_hw_interrupt_disable(); temp = rt_hw_interrupt_disable();
/* get current thread */
thread = rt_thread_self();
/* mailbox is full */ /* mailbox is full */
if (mb->entry == mb->size) while (mb->entry == mb->size)
{
/* reset error number in thread */
thread->error = RT_EOK;
/* no waiting, return timeout */
if (timeout == 0)
{ {
/* enable interrupt */ /* enable interrupt */
rt_hw_interrupt_enable(temp); rt_hw_interrupt_enable(temp);
thread->error = -RT_EFULL;
return -RT_EFULL; return -RT_EFULL;
} }
/* suspend current thread */
rt_ipc_list_suspend(&(mb->suspend_sender_thread),
thread, mb->parent.parent.flag);
/* has waiting time, start thread timer */
if (timeout > 0)
{
/* get the start tick of timer */
tick_delta = rt_tick_get();
#ifdef RT_IPC_DEBUG
rt_kprintf("mb_send_wait: start timer of thread:%s\n", thread->name);
#endif
/* reset the timeout of thread timer and start it */
rt_timer_control(&(thread->thread_timer), RT_TIMER_CTRL_SET_TIME, &timeout);
rt_timer_start(&(thread->thread_timer));
}
/* enable interrupt */
rt_hw_interrupt_enable(temp);
/* re-schedule */
rt_schedule();
/* resume from suspend state */
if (thread->error != RT_EOK)
{
/* return error */
return thread->error;
}
/* disable interrupt */
temp = rt_hw_interrupt_disable();
/* re-calculate timeout tick */
if (timeout > 0)
{
tick_delta = rt_tick_get() - tick_delta;
timeout -= tick_delta;
if (timeout < 0) timeout = 0;
}
}
/* set ptr */ /* set ptr */
mb->msg_pool[mb->in_offset] = value; mb->msg_pool[mb->in_offset] = value;
/* increase input offset */ /* increase input offset */
@ -1334,7 +1400,7 @@ rt_err_t rt_mb_send (rt_mailbox_t mb, rt_uint32_t value)
/* resume suspended thread */ /* resume suspended thread */
if( !rt_list_isempty(&mb->parent.suspend_thread) ) if( !rt_list_isempty(&mb->parent.suspend_thread) )
{ {
rt_ipc_object_resume(&(mb->parent)); rt_ipc_list_resume(&(mb->parent.suspend_thread));
/* enable interrupt */ /* enable interrupt */
rt_hw_interrupt_enable(temp); rt_hw_interrupt_enable(temp);
@ -1349,6 +1415,21 @@ rt_err_t rt_mb_send (rt_mailbox_t mb, rt_uint32_t value)
return RT_EOK; return RT_EOK;
} }
/**
* This function will send a mail to mailbox object, if there are threads suspended
* on mailbox object, it will be waked up. This function will return immediately, if
* you want blocking send, use rt_mb_send_wait instead.
*
* @param mb the mailbox object
* @param value the mail
*
* @return the error code
*/
rt_err_t rt_mb_send (rt_mailbox_t mb, rt_uint32_t value)
{
return rt_mb_send_wait(mb,value,0);
}
/** /**
* This function will receive a mail from mailbox object, if there is no mail in * This function will receive a mail from mailbox object, if there is no mail in
* mailbox object, the thread shall wait for a specified time. * mailbox object, the thread shall wait for a specified time.
@ -1396,7 +1477,8 @@ rt_err_t rt_mb_recv (rt_mailbox_t mb, rt_uint32_t* value, rt_int32_t timeout)
} }
/* suspend current thread */ /* suspend current thread */
rt_ipc_object_suspend(&(mb->parent), thread); rt_ipc_list_suspend(&(mb->parent.suspend_thread),
thread, mb->parent.parent.flag);
/* has waiting time, start thread timer */ /* has waiting time, start thread timer */
if (timeout > 0) if (timeout > 0)
@ -1446,6 +1528,22 @@ rt_err_t rt_mb_recv (rt_mailbox_t mb, rt_uint32_t* value, rt_int32_t timeout)
/* decrease message entry */ /* decrease message entry */
mb->entry --; mb->entry --;
/* resume suspended thread */
if( !rt_list_isempty(&(mb->suspend_sender_thread)) )
{
rt_ipc_list_resume(&(mb->suspend_sender_thread));
/* enable interrupt */
rt_hw_interrupt_enable(temp);
#ifdef RT_USING_HOOK
if (rt_object_take_hook != RT_NULL) rt_object_take_hook(&(mb->parent.parent));
#endif
rt_schedule();
return RT_EOK;
}
/* enable interrupt */ /* enable interrupt */
rt_hw_interrupt_enable(temp); rt_hw_interrupt_enable(temp);
@ -1476,7 +1574,7 @@ rt_err_t rt_mb_control(rt_mailbox_t mb, rt_uint8_t cmd, void* arg)
level = rt_hw_interrupt_disable(); level = rt_hw_interrupt_disable();
/* resume all waiting thread */ /* resume all waiting thread */
rt_ipc_object_resume_all(&mb->parent); rt_ipc_list_resume_all(&(mb->parent.suspend_thread));
/* re-init mailbox */ /* re-init mailbox */
mb->entry = 0; mb->entry = 0;
@ -1571,7 +1669,7 @@ rt_err_t rt_mq_detach(rt_mq_t mq)
RT_ASSERT(mq != RT_NULL); RT_ASSERT(mq != RT_NULL);
/* resume all suspended thread */ /* resume all suspended thread */
rt_ipc_object_resume_all((struct rt_ipc_object*)mq); rt_ipc_list_resume_all(&mq->parent.suspend_thread);
/* detach message queue object */ /* detach message queue object */
rt_object_detach(&(mq->parent.parent)); rt_object_detach(&(mq->parent.parent));
@ -1653,7 +1751,7 @@ rt_err_t rt_mq_delete (rt_mq_t mq)
RT_ASSERT(mq != RT_NULL); RT_ASSERT(mq != RT_NULL);
/* resume all suspended thread */ /* resume all suspended thread */
rt_ipc_object_resume_all(&(mq->parent)); rt_ipc_list_resume_all(&(mq->parent.suspend_thread));
#ifdef RT_USING_MODULE #ifdef RT_USING_MODULE
/* the mq object belongs to an application module */ /* the mq object belongs to an application module */
@ -1727,6 +1825,7 @@ rt_err_t rt_mq_send (rt_mq_t mq, void* buffer, rt_size_t size)
((struct rt_mq_message*)mq->msg_queue_tail)->next = msg; ((struct rt_mq_message*)mq->msg_queue_tail)->next = msg;
} }
/* set new tail */ /* set new tail */
mq->msg_queue_tail = msg; mq->msg_queue_tail = msg;
/* if the head is empty, set head */ /* if the head is empty, set head */
@ -1738,7 +1837,7 @@ rt_err_t rt_mq_send (rt_mq_t mq, void* buffer, rt_size_t size)
/* resume suspended thread */ /* resume suspended thread */
if( !rt_list_isempty(&mq->parent.suspend_thread) ) if( !rt_list_isempty(&mq->parent.suspend_thread) )
{ {
rt_ipc_object_resume(&(mq->parent)); rt_ipc_list_resume(&(mq->parent.suspend_thread));
/* enable interrupt */ /* enable interrupt */
rt_hw_interrupt_enable(temp); rt_hw_interrupt_enable(temp);
@ -1814,7 +1913,7 @@ rt_err_t rt_mq_urgent(rt_mq_t mq, void* buffer, rt_size_t size)
/* resume suspended thread */ /* resume suspended thread */
if( !rt_list_isempty(&mq->parent.suspend_thread) ) if( !rt_list_isempty(&mq->parent.suspend_thread) )
{ {
rt_ipc_object_resume(&(mq->parent)); rt_ipc_list_resume(&(mq->parent.suspend_thread));
/* enable interrupt */ /* enable interrupt */
rt_hw_interrupt_enable(temp); rt_hw_interrupt_enable(temp);
@ -1875,7 +1974,8 @@ rt_err_t rt_mq_recv (rt_mq_t mq, void* buffer, rt_size_t size, rt_int32_t timeou
} }
/* suspend current thread */ /* suspend current thread */
rt_ipc_object_suspend(&(mq->parent), thread); rt_ipc_list_suspend(&(mq->parent.suspend_thread),
thread, mq->parent.parent.flag);
/* has waiting time, start thread timer */ /* has waiting time, start thread timer */
if (timeout > 0) if (timeout > 0)
@ -1971,7 +2071,7 @@ rt_err_t rt_mq_control(rt_mq_t mq, rt_uint8_t cmd, void* arg)
level = rt_hw_interrupt_disable(); level = rt_hw_interrupt_disable();
/* resume all waiting thread */ /* resume all waiting thread */
rt_ipc_object_resume_all(&mq->parent); rt_ipc_list_resume_all(&mq->parent.suspend_thread);
/* release all message in the queue */ /* release all message in the queue */
while (mq->msg_queue_head != RT_NULL) while (mq->msg_queue_head != RT_NULL)
@ -2002,5 +2102,4 @@ rt_err_t rt_mq_control(rt_mq_t mq, rt_uint8_t cmd, void* arg)
} }
#endif /* end of RT_USING_MESSAGEQUEUE */ #endif /* end of RT_USING_MESSAGEQUEUE */
/*@}*/ /*@}*/