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threads: Document spurious wakeups on virCondWait

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This commit is contained in:
Michal Privoznik 2011-12-09 17:14:15 +01:00
parent 9707c2a8bc
commit 6c811ed486
1 changed files with 6 additions and 0 deletions
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6
src/util/threads.h
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@ -88,8 +88,14 @@ void virMutexUnlock(virMutexPtr m);
int virCondInit(virCondPtr c) ATTRIBUTE_RETURN_CHECK; int virCondInit(virCondPtr c) ATTRIBUTE_RETURN_CHECK;
int virCondDestroy(virCondPtr c) ATTRIBUTE_RETURN_CHECK; int virCondDestroy(virCondPtr c) ATTRIBUTE_RETURN_CHECK;
/* virCondWait, virCondWaitUntil:
* These functions can return without the associated predicate
* changing value. Therefore in nearly all cases they
* should be enclosed in a while loop that checks the predicate.
*/
int virCondWait(virCondPtr c, virMutexPtr m) ATTRIBUTE_RETURN_CHECK; int virCondWait(virCondPtr c, virMutexPtr m) ATTRIBUTE_RETURN_CHECK;
int virCondWaitUntil(virCondPtr c, virMutexPtr m, unsigned long long whenms) ATTRIBUTE_RETURN_CHECK; int virCondWaitUntil(virCondPtr c, virMutexPtr m, unsigned long long whenms) ATTRIBUTE_RETURN_CHECK;
void virCondSignal(virCondPtr c); void virCondSignal(virCondPtr c);
void virCondBroadcast(virCondPtr c); void virCondBroadcast(virCondPtr c);