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[MINOR] task: new function task_schedule() to schedule a wake up

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This function is used when a task should be woken up at most at a given
date. This will be used with rate shapers.
This commit is contained in:
Willy Tarreau 2011-07-25 14:30:42 +02:00
parent d634e7c673
commit 26e4881a2d
1 changed files with 17 additions and 0 deletions
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17
include/proto/task.h
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@ -224,6 +224,23 @@ static inline void task_queue(struct task *task)
__task_queue(task); __task_queue(task);
} }
/* Ensure <task> will be woken up at most at <when>. If the task is already in
* the run queue (but not running), nothing is done. It may be used that way
* with a delay : task_schedule(task, tick_add(now_ms, delay));
*/
static inline void task_schedule(struct task *task, int when)
{
if (task_in_rq(task))
return;
if (task_in_wq(task))
when = tick_first(when, task->expire);
task->expire = when;
if (!task_in_wq(task) || tick_is_lt(task->expire, task->wq.key))
__task_queue(task);
}
/* /*
* This does 4 things : * This does 4 things :
* - wake up all expired tasks * - wake up all expired tasks