libs/rt-thread
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[workqueue] 修复提交工作后立即取消，获取无效工作任务的问题

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当高优先级任务提交工作后，立即取消。此时队列被唤醒，下面紧接着获取链表中第一个任务。但此时已经是空链表了。

每次线程被唤醒。检查当前任务链表是否未空
This commit is contained in:
tangyuxin 2021-02-06 21:54:25 +08:00
parent 7eabe5c9e9
commit 83dca09e1c
1 changed files with 3 additions and 3 deletions
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6
components/drivers/src/workqueue.c
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@ -58,15 +58,17 @@ static void _workqueue_thread_entry(void *parameter)
while (1)
{
level = rt_hw_interrupt_disable();
if (rt_list_isempty(&(queue->work_list)))
{
rt_hw_interrupt_enable(level);
/* no software timer exist, suspend self. */
rt_thread_suspend(rt_thread_self());
rt_schedule();
continue;
}
/* we have work to do with. */
level = rt_hw_interrupt_disable();
work = rt_list_entry(queue->work_list.next, struct rt_work, list);
rt_list_remove(&(work->list));
queue->work_current = work;
@ -76,10 +78,8 @@ static void _workqueue_thread_entry(void *parameter)
/* do work */
work->work_func(work, work->work_data);
level = rt_hw_interrupt_disable();
/* clean current work */
queue->work_current = RT_NULL;
rt_hw_interrupt_enable(level);
/* ack work completion */
_workqueue_work_completion(queue);