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changed soft timer thread resume mode. 

git-svn-id: https://rt-thread.googlecode.com/svn/trunk@220 bbd45198-f89e-11dd-88c7-29a3b14d5316
This commit is contained in:
lijin.unix 2009-12-23 15:15:05 +00:00
parent 1133895d2c
commit 10a46e477b
1 changed files with 36 additions and 19 deletions
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55
src/timer.c
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@ -343,6 +343,9 @@ rt_err_t rt_timer_control(rt_timer_t timer, rt_uint8_t cmd, void* arg)
* corresponding timeout function will be invoked.
*
*/
#ifdef RT_USING_TIMER_SOFT
void rt_soft_timer_tick_hook (void);
#endif
void rt_timer_check()
{
rt_tick_t current_tick;
@ -402,7 +405,12 @@ void rt_timer_check()
/* enable interrupt */
rt_hw_interrupt_enable(level);
#ifdef RT_TIMER_DEBUG
/**/
#ifdef RT_USING_TIMER_SOFT
rt_soft_timer_tick_hook ( );
#endif
#ifdef TIMER_DEBUG
rt_kprintf("timer check leave\n");
#endif
}
@ -412,9 +420,30 @@ static struct rt_thread timer_thread;
static rt_uint8_t timer_thread_stack[RT_TIMER_THREAD_STACK_SIZE];
static struct rt_semaphore timer_sem;
/* check software timer list. if a timeout event happens, the corresponding
timeout function will be invoked. */
static void rt_soft_timer_check()
static rt_uint16_t timer_ex_cnt;
rt_err_t timer_signal (void)
{
return rt_sem_release(&timer_sem);
}
void rt_soft_timer_tick_hook (void)
{
timer_ex_cnt++;
if (timer_ex_cnt >= (RT_TICK_PER_SECOND / RT_TIMER_EX_TICKS_PER_SEC))
{
timer_ex_cnt = 0;
timer_signal();
}
}
/**
* This function will check timer list, if a timeout event happens, the
* corresponding timeout function will be invoked.
*
*/
void rt_soft_timer_check()
{
rt_tick_t current_tick;
rt_list_t *n;
@ -476,11 +505,10 @@ static void rt_thread_timer_entry(void* parameter)
{
while (1)
{
/* take the semaphore as software timer tick */
rt_sem_take(&timer_sem, RT_TICK_PER_SECOND / RT_TIMER_TICK_PER_SECOND);
/* reach here because thread takes semaphore timeout */
rt_sem_take(&timer_sem,RT_WAITING_FOREVER);
/* lock scheduler */
rt_enter_critical();
@ -506,18 +534,7 @@ void rt_system_timer_init()
#ifdef RT_USING_TIMER_SOFT
rt_list_init(&rt_soft_timer_list);
rt_sem_init(&timer_sem, "timer", 0, RT_IPC_FLAG_FIFO);
#endif
}
/**
* @ingroup SystemInit
*
* This function will init system timer thread
*
*/
void rt_system_timer_thread_init()
{
#ifdef RT_USING_TIMER_SOFT
/* start software timer thread */
rt_thread_init(&timer_thread,
"timer",