Linux条件变量pthread_condition细节(为何先加锁,pthread_cond_wait为何先解锁,返回时又加锁),程序员大本营,技术文章内容聚合第一站。
これらの関数の詳細は、pthread_cond_broadcast() - 条件のブロードキャストとpthread_cond_signal() - 条件のシグナル送信を参照してください。戻り値 正常に実行された場合、pthread_cond_wait() は 0 を戻します。 正常に実行されなかった場合、pthread_cond_wait() は -1 を戻して、errno を...
The pthread_cond_wait() function waits until a pthread_cond_broadcast() or a pthread_cond_signal() is received. For more information on these functions, refer to pthread_cond_broadcast() — Broadcast a condition and to pthread_cond_signal() — Signal a condition.Returned...
int pthread_cond_wait(pthread_cond_t *cond, pthread_mutex_t *mutex); DESCRIPTION Thepthread_cond_wait()function blocks on the specified condition variable, which atomically releases the specified mutex and causes the calling thread to block on the condition variable The blocked thread may be awak...
每个线程(阻断时由于一个pthread_cond_broadcast()或pthread_cond_signal()返回的呼叫pthread_cond_wait()或pthread_cond_timedwait(),该线程的互斥锁应自己的要求pthread_cond_wait()或pthread_cond_timedwait()。 翻译结果5复制译文编辑译文朗读译文返回顶部 ...
ConditionWaitSemanticsIt is important to note that whenpthread_cond_wait() andpthread_cond_timedwait() return without error, the associated predicate may still be false. Similarly, whenpthread_cond_timedwait() returns with the timeout error, the associated predicate may be true due to an unavoidab...
If the condition variable is private (PTHREAD_PROCESS_PRIVATE), the mutex must also be private. If the condition variable is shared, all calls to pthread_cond_wait() or pthread_cont_timedwait() for a given condition variable must use the same mutex for the life of the process, or until ...
#define _OPEN_THREADS #include <pthread.h> int pthread_cond_timedwait(pthread_cond_t *cond, pthread_mutex_t *mutex, const struct timespec *abstime); General Description Allows a thread to wait on a condition variable until satisfied or until a specified time occurs. The pthread_cond_timedwait...
(Input) Address of the absolute system time at which the wait expires Return Value 0 pthread_cond_timedwait() was successful. value pthread_cond_timedwait() was not successful.valueis set to indicate the error condition. Error Conditions
条件変数が専用 (PTHREAD_PROCESS_PRIVATE) の場合、mutex も専用でなければ なりません。 条件変数が共用の場合、特定の条件変数用の pthread_cond_wait() また は pthread_cont_timedwait() の呼び出しはすべて、プロセスの存続中、すなわち、 条件変数と mutex の両方が破棄されるまで (pthread_cond...