linux-2.6.33/finish_wait()
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開始行:
*参照元 [#d6847de9]
#backlinks
*説明 [#sb302583]
-パス: [[linux-2.6.33/kenel/wait.c]]
-FIXME: これは何？
--説明
**引数 [#se5022f7]
-wait_queue_head_t *q
--
--[[linux-2.6.33/wait_queue_head_t]]
-wait_queue_t *wait
--
--[[linux-2.6.33/wait_queue_t]]
**返り値 [#ee41c27f]
-なし
**参考 [#s31a327a]
*実装 [#sf8f6723]
/*
* finish_wait - clean up after waiting in a queue
* @q: waitqueue waited on
* @wait: wait descriptor
*
* Sets current thread back to running state and removes
* the wait descriptor from the given waitqueue if still
* queued.
*/
void finish_wait(wait_queue_head_t *q, wait_queue_t *wait)
{
unsigned long flags;
__set_current_state(TASK_RUNNING);
-
--[[linux-2.6.33/__set_current_state()]]
/*
* We can check for list emptiness outside the lock
* IFF:
* - we use the "careful" check that verifies both
* the next and prev pointers, so that there cannot
* be any half-pending updates in progress on other
* CPU's that we haven't seen yet (and that might
* still change the stack area.
* and
* - all other users take the lock (ie we can only
* have _one_ other CPU that looks at or modifies
* the list).
*/
if (!list_empty_careful(&wait->task_list)) {
-
--[[linux-2.6.33/list_empty_careful()]]
spin_lock_irqsave(&q->lock, flags);
list_del_init(&wait->task_list);
spin_unlock_irqrestore(&q->lock, flags);
-
--[[linux-2.6.33/spin_lock_irqsave()]]
--[[linux-2.6.33/list_del_init()]]
--[[linux-2.6.33/spin_unlock_irqrestore()]]
}
}
EXPORT_SYMBOL(finish_wait);
-ライセンスに関係なくシンボルを公開する。
--[[linux-2.6.33/EXPORT_SYMBOL()]]
*コメント [#t6e6d21b]
終了行:
*参照元 [#d6847de9]
#backlinks
*説明 [#sb302583]
-パス: [[linux-2.6.33/kenel/wait.c]]
-FIXME: これは何？
--説明
**引数 [#se5022f7]
-wait_queue_head_t *q
--
--[[linux-2.6.33/wait_queue_head_t]]
-wait_queue_t *wait
--
--[[linux-2.6.33/wait_queue_t]]
**返り値 [#ee41c27f]
-なし
**参考 [#s31a327a]
*実装 [#sf8f6723]
/*
* finish_wait - clean up after waiting in a queue
* @q: waitqueue waited on
* @wait: wait descriptor
*
* Sets current thread back to running state and removes
* the wait descriptor from the given waitqueue if still
* queued.
*/
void finish_wait(wait_queue_head_t *q, wait_queue_t *wait)
{
unsigned long flags;
__set_current_state(TASK_RUNNING);
-
--[[linux-2.6.33/__set_current_state()]]
/*
* We can check for list emptiness outside the lock
* IFF:
* - we use the "careful" check that verifies both
* the next and prev pointers, so that there cannot
* be any half-pending updates in progress on other
* CPU's that we haven't seen yet (and that might
* still change the stack area.
* and
* - all other users take the lock (ie we can only
* have _one_ other CPU that looks at or modifies
* the list).
*/
if (!list_empty_careful(&wait->task_list)) {
-
--[[linux-2.6.33/list_empty_careful()]]
spin_lock_irqsave(&q->lock, flags);
list_del_init(&wait->task_list);
spin_unlock_irqrestore(&q->lock, flags);
-
--[[linux-2.6.33/spin_lock_irqsave()]]
--[[linux-2.6.33/list_del_init()]]
--[[linux-2.6.33/spin_unlock_irqrestore()]]
}
}
EXPORT_SYMBOL(finish_wait);
-ライセンスに関係なくシンボルを公開する。
--[[linux-2.6.33/EXPORT_SYMBOL()]]
*コメント [#t6e6d21b]
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