Void error_pthread_cond_timedwait(const int timed_wait_rv)ДЇprintf(stderr, 'Conditional timed wait, failed. ') ДЇprintf(stderr, 'The time specified by abstime to pthread_cond_timedwait() has passed. ') ДЇprintf(stderr, 'The value specified by abstime, cond or mutex is invalid. ') ДЇprintf(stderr, 'The mutex was not owned by the current thread at the time of the call. ')

Void error_pthread_create(const int create_rv)ДЇprintf(stderr, 'Could not create thread. ') ДЇprintf(stderr, 'Insufficient resources to create another thread or a system-imposed limit on the number of threads was encountered. ') ДЇprintf(stderr, 'Invalid settings in attr. ') ДЇprintf(stderr, 'No permission to set the scheduling policy and parameters specified in attr. ') Void error_pthread_setcanceltype(const int setcanceltype_rv)ДЇprintf(stderr, 'Could not change cancelability type of thread. ') ДЇprintf(stderr, 'Invalid value for type. ') Void error_pthread_cond_signal(const int signal_rv)ДЇprintf(stderr, 'The value cond does not refer to an initialised condition variable. ') Void error_pthread_mutex_lock(const int lock_rv)ДЇprintf(stderr, 'Failed to lock mutex. ') ДЇprintf(stderr, 'The value specified by mutex does not refer to an initialized mutex object or the mutex was created with the protocol attribute having the value PTHREAD_PRIO_PROTECT and the calling thread's priority is higher than the mutex's current priority ceiling. ') ДЇprintf(stderr, 'A deadlock condition was detected or the current thread already owns the mutex. ') Void error_pthread_mutex_unlock(const int unlock_rv)ДЇprintf(stderr, 'Failed to unlock mutex. ') ДЇprintf(stderr, 'The value specified by mutex does not refer to an initialized mutex object. ') ДЇprintf(stderr, 'The mutex could not be acquired because the maximum number of recursive locks for mutex has been exceeded. ') ДЇprintf(stderr, 'The current thread does not own the mutex. ') A thread attempting to lock a mutex that is already locked by another thread is suspended until the owning thread unlocks the mutex first. A mutex can never be owned by two different threads simultaneously. A mutex has two possible states: unlocked (not owned by any thread), and locked (owned by one thread). A mutex is a MUTual EXclusion device, and is useful for protecting shared data structures from concurrent modifications, and implementing critical sections and monitors. The basic operations on conditions are: signal the condition (when the predicate becomes true), and wait for the condition, suspending the thread execution until another thread signals the condition. A condition is a synchronization device that allows threads to suspend execution and relinquish the processors until some predicate on shared data is satisfied. Once the main thread receives its signal, it will join the pthread and terminate.ДЇull example of pthread_cond_timedwait with cmake (compressed) (634 downloads) The pthread will perform its task and then signal the main thread. The main thread spawns a pthread and then blocks on a condition waiting for a signal from the pthread.

22 February 2017 in C / Programming tagged clock_gettime / pthread_cond_init / pthread_cond_signal / pthread_cond_t / pthread_cond_timedwait / pthread_create / pthread_join / pthread_mutex_init / pthread_mutex_lock / pthread_mutex_t / pthread_mutex_unlock / pthread_setcanceltype / pthread_t by Tux

Join and cancel pthread c