Pthread_cond_wait Error Codes

pthread_mutex_t *mutex); int pthread_cond_timedwait(pthread_cond_t *cond, pthread_mutex_t *mutex, const struct timespec *abstime); DESCRIPTION The pthread_cond_wait() and pthread_cond_timedwait() functions are used to block on a condition variable. They are called with mutex locked by the pthread_cond_timedwait example calling thread or undefined behaviour will result. These functions atomically release

Pthread_cond_wait Timeout

mutex and cause the calling thread to block on the condition variable cond; atomically here means "atomically with pthread condition variable example respect to access by another thread to the mutex and then the condition variable". That is, if another thread is able to acquire the mutex after the about-to-block thread has

Pthread_cond_timedwait Example C++

released it, then a subsequent call to pthread_cond_signal() or pthread_cond_broadcast() in that thread behaves as if it were issued after the about-to-block thread has blocked. Upon successful return, the mutex has been locked and is owned by the calling thread. When using condition variables there is always a boolean predicate involving shared variables associated with each condition wait that is pthread_cond_timedwait linux true if the thread should proceed. Spurious wakeups from the pthread_cond_wait() or pthread_cond_timedwait() functions may occur. Since the return from pthread_cond_wait() or pthread_cond_timedwait() does not imply anything about the value of this predicate, the predicate should be re-evaluated upon such return. The effect of using more than one mutex for concurrent pthread_cond_wait() or pthread_cond_timedwait() operations on the same condition variable is undefined; that is, a condition variable becomes bound to a unique mutex when a thread waits on the condition variable, and this (dynamic) binding ends when the wait returns. A condition wait (whether timed or not) is a cancellation point. When the cancelability enable state of a thread is set to PTHREAD_CANCEL_DEFERRED, a side effect of acting upon a cancellation request while in a condition wait is that the mutex is (in effect) re-acquired before calling the first cancellation cleanup handler. The effect is as if the thread were unblocked, allowed to execute up to the point of returning from the call to pthread_cond_wait() or pthread_cond_timedwait(), but at that point notices the cancellation request and instea

the interface may not be implemented on Linux. Name pthread_cond_timedwait, pthread_cond_wait - wait on a condition Synopsis https://linux.die.net/man/3/pthread_cond_wait #include int pthread_cond_timedwait(pthread_cond_t *restrict cond, pthread_mutex_t *restrict mutex, const struct timespec *restrict abstime); int pthread_cond_wait(pthread_cond_t *restrict cond, pthread_mutex_t *restrict mutex); Description The pthread_cond_timedwait() and pthread_cond_wait() functions http://man7.org/linux/man-pages/man3/pthread_cond_timedwait.3p.html shall block on a condition variable. They shall be called with mutex locked by the calling thread or undefined behavior results. These functions atomically release mutex pthread_cond_timedwait example and cause the calling thread to block on the condition variable cond; atomically here means "atomically with respect to access by another thread to the mutex and then the condition variable". That is, if another thread is able to acquire the mutex after the about-to-block thread has released it, then a subsequent pthread_cond_wait error codes call to pthread_cond_broadcast() or pthread_cond_signal() in that thread shall behave as if it were issued after the about-to-block thread has blocked. Upon successful return, the mutex shall have been locked and shall be owned by the calling thread. When using condition variables there is always a Boolean predicate involving shared variables associated with each condition wait that is true if the thread should proceed. Spurious wakeups from the pthread_cond_timedwait() or pthread_cond_wait() functions may occur. Since the return from pthread_cond_timedwait() or pthread_cond_wait() does not imply anything about the value of this predicate, the predicate should be re-evaluated upon such return. The effect of using more than one mutex for concurrent pthread_cond_timedwait() or pthread_cond_wait() operations on the same condition variable is undefined; that is, a condition variable becomes bound to a unique mutex when a thread waits on the condition variable, and this (dynamic) binding shall end when the wait returns. A condition wait (whether timed or no

ManualTHREAD_COND_TIMEDWAIT(3P) PROLOG top This manual page is part of the POSIX Programmer's Manual. The Linux implementation of this interface may differ (consult the corresponding Linux manual page for details of Linux behavior), or the interface may not be implemented on Linux. NAME top pthread_cond_timedwait, pthread_cond_wait — wait on a condition SYNOPSIS top #include int pthread_cond_timedwait(pthread_cond_t *restrict cond, pthread_mutex_t *restrict mutex, const struct timespec *restrict abstime); int pthread_cond_wait(pthread_cond_t *restrict cond, pthread_mutex_t *restrict mutex); DESCRIPTION top The pthread_cond_timedwait() and pthread_cond_wait() functions shall block on a condition variable. The application shall ensure that these functions are called with mutex locked by the calling thread; otherwise, an error (for PTHREAD_MUTEX_ERRORCHECK and robust mutexes) or undefined behavior (for other mutexes) results. These functions atomically release mutex and cause the calling thread to block on the condition variable cond; atomically here means ``atomically with respect to access by another thread to the mutex and then the condition variable''. That is, if another thread is able to acquire the mutex after the about-to-block thread has released it, then a subsequent call to pthread_cond_broadcast() or pthread_cond_signal() in that thread shall behave as if it were issued after the about-to-block thread has blocked. Upon successful return, the mutex shall have been locked and shall be owned by the calling thread. If mutex is a robust mutex where an owner terminated while holding the lock and the state is recoverable, the mutex shall be acquired even though the function returns an error code. When using condition variables there is always a Boolean predicate involving shared variables associated with each condition wait that is true if the thread should proceed. Spurious wakeups from the pthread_cond_timedwait() or pthread_cond_wait() functions may occur. Since t