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fix the fast event receive bug 

git-svn-id: https://rt-thread.googlecode.com/svn/trunk@29 bbd45198-f89e-11dd-88c7-29a3b14d5316
This commit is contained in:
bernard.xiong 2009-08-31 12:31:19 +00:00
parent fb8925dba2
commit dc638b887c
1 changed files with 32 additions and 8 deletions
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32
src/ipc.c
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@ -24,6 +24,7 @@
* 2006-08-04 Bernard add hook support * 2006-08-04 Bernard add hook support
* 2009-05-21 Yi.qiu fix the sem release bug * 2009-05-21 Yi.qiu fix the sem release bug
* 2009-07-18 Bernard fix the event clear bug * 2009-07-18 Bernard fix the event clear bug
* 2009-08-31 Bernard fix the fast event receive bug
*/ */
#include <rtthread.h> #include <rtthread.h>
@ -979,6 +980,7 @@ rt_err_t rt_fast_event_send(rt_fast_event_t event, rt_uint8_t bit)
register rt_ubase_t level; register rt_ubase_t level;
struct rt_thread *thread; struct rt_thread *thread;
struct rt_list_node *n; struct rt_list_node *n;
rt_bool_t need_schedule;
/* parameter check */ /* parameter check */
RT_ASSERT(event != RT_NULL); RT_ASSERT(event != RT_NULL);
@ -995,6 +997,9 @@ rt_err_t rt_fast_event_send(rt_fast_event_t event, rt_uint8_t bit)
event->set |= offset; event->set |= offset;
/* does not schedule */
need_schedule = RT_FALSE;
/* if thread list at offset is not empty */ /* if thread list at offset is not empty */
n = event->thread_list[bit].next; n = event->thread_list[bit].next;
while (n != &(event->thread_list[bit])) while (n != &(event->thread_list[bit]))
@ -1005,18 +1010,18 @@ rt_err_t rt_fast_event_send(rt_fast_event_t event, rt_uint8_t bit)
/* move to next node */ /* move to next node */
n = n->next; n = n->next;
/* clear bit or not */
if (thread->event_info & RT_EVENT_FLAG_CLEAR)
event->set &= ~offset;
/* resume thread */ /* resume thread */
rt_thread_resume(thread); rt_thread_resume(thread);
/* need do a scheduling */
need_schedule = RT_TRUE;
} }
/* enable interrupt */ /* enable interrupt */
rt_hw_interrupt_enable(level); rt_hw_interrupt_enable(level);
/* do a schedule */ /* do a schedule */
if (need_schedule == RT_TRUE)
rt_schedule(); rt_schedule();
return RT_EOK; return RT_EOK;
@ -1117,6 +1122,25 @@ rt_err_t rt_fast_event_recv(rt_fast_event_t event, rt_uint8_t bit, rt_uint8_t op
rt_timer_control(&(thread->thread_timer), RT_TIMER_CTRL_SET_TIME, &timeout); rt_timer_control(&(thread->thread_timer), RT_TIMER_CTRL_SET_TIME, &timeout);
rt_timer_start(&(thread->thread_timer)); rt_timer_start(&(thread->thread_timer));
} }
/* enable interrupt */
rt_hw_interrupt_enable(level);
/* do a schedule */
rt_schedule();
/* receive a fast event */
if (thread->error != RT_EOK)
{
return thread->error;
}
/* received a event, disable interrupt to protect */
level = rt_hw_interrupt_disable();
/* clear event */
if (option & RT_EVENT_FLAG_CLEAR)
event->set &= ~offset;
} }
/* enable interrupt */ /* enable interrupt */