linux-2.6.33/__down_common()
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開始行:
*参照元 [#xb30cf01]
#backlinks
*説明 [#x327d7c6]
-パス: [[linux-2.6.33/kernel/semaphore.c]]
-FIXME: これは何？
--説明
**引数 [#te4f54b1]
-struct semaphore *sem
--
--[[linux-2.6.33/semaphore]]
-long state
--
-long timeout
--
**返り値 [#h6832eb7]
-int
--
**参考 [#a53b1f1f]
*実装 [#e7d12105]
/*
* Because this function is inlined, the 'state' paramet...
* constant, and thus optimised away by the compiler. L...
* 'timeout' parameter for the cases without timeouts.
*/
static inline int __sched __down_common(struct semaphore...
long timeout)
{
struct task_struct *task = current;
struct semaphore_waiter waiter;
-
--[[linux-2.6.33/task_struct]]
-
--[[linux-2.6.33/current(global)]]
-
--[[linux-2.6.33/semaphore_waiter]]
list_add_tail(&waiter.list, &sem->wait_list);
waiter.task = task;
waiter.up = 0;
-
--[[linux-2.6.33/list_add_tail()]]
for (;;) {
if (signal_pending_state(state, task))
goto interrupted;
-
--[[linux-2.6.33/signal_pending_state()]]
if (timeout <= 0)
goto timed_out;
__set_task_state(task, state);
-
--[[linux-2.6.33/__set_task_state()]]
spin_unlock_irq(&sem->lock);
-
--[[linux-2.6.33/spin_unlock_irq()]]
timeout = schedule_timeout(timeout);
-
--[[linux-2.6.33/schedule_timeout()]]
spin_lock_irq(&sem->lock);
if (waiter.up)
return 0;
-
--[[linux-2.6.33/spin_lock_irq()]]
}
timed_out:
list_del(&waiter.list);
return -ETIME;
-
--[[linux-2.6.33/list_del()]]
-
--[[linux-2.6.33/ETIME]]
interrupted:
list_del(&waiter.list);
return -EINTR;
-
--[[linux-2.6.33/EINTR]]
}
*コメント [#e77fc084]
終了行:
*参照元 [#xb30cf01]
#backlinks
*説明 [#x327d7c6]
-パス: [[linux-2.6.33/kernel/semaphore.c]]
-FIXME: これは何？
--説明
**引数 [#te4f54b1]
-struct semaphore *sem
--
--[[linux-2.6.33/semaphore]]
-long state
--
-long timeout
--
**返り値 [#h6832eb7]
-int
--
**参考 [#a53b1f1f]
*実装 [#e7d12105]
/*
* Because this function is inlined, the 'state' paramet...
* constant, and thus optimised away by the compiler. L...
* 'timeout' parameter for the cases without timeouts.
*/
static inline int __sched __down_common(struct semaphore...
long timeout)
{
struct task_struct *task = current;
struct semaphore_waiter waiter;
-
--[[linux-2.6.33/task_struct]]
-
--[[linux-2.6.33/current(global)]]
-
--[[linux-2.6.33/semaphore_waiter]]
list_add_tail(&waiter.list, &sem->wait_list);
waiter.task = task;
waiter.up = 0;
-
--[[linux-2.6.33/list_add_tail()]]
for (;;) {
if (signal_pending_state(state, task))
goto interrupted;
-
--[[linux-2.6.33/signal_pending_state()]]
if (timeout <= 0)
goto timed_out;
__set_task_state(task, state);
-
--[[linux-2.6.33/__set_task_state()]]
spin_unlock_irq(&sem->lock);
-
--[[linux-2.6.33/spin_unlock_irq()]]
timeout = schedule_timeout(timeout);
-
--[[linux-2.6.33/schedule_timeout()]]
spin_lock_irq(&sem->lock);
if (waiter.up)
return 0;
-
--[[linux-2.6.33/spin_lock_irq()]]
}
timed_out:
list_del(&waiter.list);
return -ETIME;
-
--[[linux-2.6.33/list_del()]]
-
--[[linux-2.6.33/ETIME]]
interrupted:
list_del(&waiter.list);
return -EINTR;
-
--[[linux-2.6.33/EINTR]]
}
*コメント [#e77fc084]
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