WebFeb 6, 2010 · DESCRIPTION POSIX.1 specifies a set of interfaces (functions, header files) for threaded programming commonly known as POSIX threads, or Pthreads. A single process can contain multiple threads, all of which are executing the same program. WebIf no threads are waiting for the rwlock, the rwlock unlocks with no current owner. Returned value If successful, pthread_rwlock_unlock () returns 0. If unsuccessful, pthread_rwlock_unlock () returns -1 and sets errno to one of the following values: Error Code Description EINVAL The value specified for rwlock is not valid. ENOMEM

关于pthread：同时使用两个条件变量 码农家园

#include int pthread_mutex_lock(pthread_mutex_t *mutex); int pthread_mutex_trylock(pthread_mutex_t *mutex); intpthread_mutex_unlock(pthread_mutex_t *mutex); See more The mutex object referenced by mutex shall be locked by calling pthread_mutex_lock(). If the mutex is already locked, the calling thread shallblock until the mutex becomes available. This … See more The pthread_mutex_lock() and pthread_mutex_trylock() functions shall fail if: EINVAL 1. The mutexwas created with the protocol … See more If successful, the pthread_mutex_lock() and pthread_mutex_unlock() functions shall return zero; otherwise, an error number shall be returnedto indicate the error. The pthread_mutex_trylock() function shall return … See more Mutex objects are intended to serve as a low-level primitive from which other thread synchronization functions can be built. As such, the implementation ofmutexes should be as efficient as possible, and this has ramifications on … See more WebReleases a mutex object. If one or more threads are waiting to lock the mutex, pthread_mutex_unlock () causes one of those threads to return from pthread_mutex_lock … idfpr registered nurse license renewal

pthreads(7) — Arch manual pages

Web__pthread_mutex_lock (pthread_mutex_t *mutex) { unsigned int type = PTHREAD_MUTEX_TYPE_ELISION (mutex); LIBC_PROBE (mutex_entry, 1, mutex); if (__builtin_expect (type & ~ (PTHREAD_MUTEX_KIND_MASK_NP PTHREAD_MUTEX_ELISION_FLAGS_NP), 0)) return __pthread_mutex_lock_full (mutex); if … Webint pthread_rwlock_unlock (pthread_rwlock_t *rwlock); Description The pthread_rwlock_unlock () function shall release a lock held on the read-write lock object referenced by rwlock. Results are undefined if the read … Webpthreads - POSIX threads DESCRIPTION top POSIX.1 specifies a set of interfaces (functions, header files) for threaded programming commonly known as POSIX threads, or Pthreads. A single process can contain multiple threads, all of which are executing the same program. idfpr perc card renewal