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Use down-to-zero semaphore feature to block thread

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Use semaphore down feature of NOVA to set the counter to zero.
If the semaphore was up()ed more than one time by impatient callers
(e.g. guys calling cancel_blocking) we make sure that the thread
really stops.
This commit is contained in:
Alexander Boettcher 2012-06-27 14:39:36 +02:00 committed by Norman Feske
parent cd886bff6a
commit 86921c2e12
1 changed files with 1 additions and 1 deletions
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2
base-nova/src/base/lock/lock_helper.h
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@ -84,5 +84,5 @@ static inline void thread_stop_myself()
{
Genode::Thread_base *myself = Genode::Thread_base::myself();
int sem = myself ? myself->tid().rs_sel : main_thread_running_semaphore();
Nova::sm_ctrl(sem, Nova::SEMAPHORE_DOWN);
Nova::sm_ctrl(sem, Nova::SEMAPHORE_DOWNZERO);
}