WebSignal the condition variable; Unlock the mutex; For the waiting thread: Lock the mutex; Do a while loop on the state variable, looping as long as the data is not ready; In the while loop, do a wait on the condition variable with pthread_cond_wait() When the while loop exits, we are now sure that new data is ready, and that the mutex is locked WebThe pthread_mutex_unlock () function shall release the mutex object referenced by mutex. The manner in which a mutex is released is dependent upon the mutex's type attribute. If there are threads blocked on the mutex object referenced by mutex when pthread_mutex_unlock () is called, resulting in the mutex becoming available, the …
Why do we need a condition check before pthread_cond_wait
Web关于pthread_join man page： 如果多个线程同时尝试与同一线程联接，则结果是未定义的。 这里你有工作线程和主线程都试图加入工作线程，听起来像UB给我。 WebA signal may be process-directed or thread-directed. A process- directed signal is one that is targeted at (and thus pending for) the process as a whole. A signal may be process-directed because it was generated by the kernel for reasons other than a hardware exception, or because it was sent using kill(2) or sigqueue(3). A thread-directed ... law of eternal return
pthread_mutex_init(3): destroy/initialize mutex - Linux man page - die.net
WebManual pages that are missing from Linux man-pages. Below is a list of pages that probably should be added to the man-pages set. If you are thinking of writing one or more of these pages, then: ... pthread_cond_signal(3) ** pthread_cond_timedwait(3) ** pthread_cond_wait(3) ** pthread_getconcurrency(3) ... WebFeb 6, 2010 · 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. These threads share the same global memory (data and heap segments), but each thread has its own stack … WebOct 27, 2012 · Here is how the program works. Enter thread_handler1 and do cond_wait. From the man page i understood that cond_wait will immediatly release the lock … law of equivalent exchange pdf