Pthread Join Error Codes
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Pthread Error Code 22
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Pthread_join Example
Community Stack Overflow is a community of 6.2 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up pthread_join doesn't work up vote 0 down vote favorite edeadlk What I want to accomplish: In the main function are created two threads. They increment a global variable with the number 5. And send a signal to consumer thread that decrements the variables.In the consumer thread between each decrementation the current value is displayed. The main thread has to wait until all the threads are finished and then exit. What I get: Some times the main function pthread_join c++ exits before the consumer had a chance to display the results. I'm using pthread_join, but it returns error code 3. Any Ideas how to get the wanted results? The code is bellow. #include
join another thread without waiting Synopsis #include
Pthread_tryjoin_np Example
the execution of the calling thread until the thread identified by th terminates, pthread_join hangs either by calling pthread_exit(3) or by being cancelled. If thread_return is not NULL, the return value of th is
Pthread_join Segmentation Fault
stored in the location pointed to by thread_return. The return value of th is either the argument it gave to pthread_exit(3) , or PTHREAD_CANCELED if th was cancelled. The joined thread th http://stackoverflow.com/questions/13976439/pthread-join-doesnt-work must be in the joinable state: it must not have been detached using pthread_detach(3) or the PTHREAD_CREATE_DETACHED attribute to pthread_create(3) . When a joinable thread terminates, its memory resources (thread descriptor and stack) are not deallocated until another thread performs pthread_join on it. Therefore, pthread_join must be called once for each joinable thread created to avoid memory leaks. pthread_timedjoin_np is identical to pthread_join except https://www.sourceware.org/pthreads-win32/manual/pthread_join.html that it will return the error ETIMEDOUT if the target thread th has not exited before abstime passes. If abstime is NULL the function will wait forever and it's behaviour will therefore be identical to pthread_join. pthread_tryjoin_np is identical to pthread_join except that it will return immediately with the error EBUSY if the target thread th has not exited. At most one thread can wait for the termination of a given thread. Calling pthread_join on a thread th on which another thread is already waiting for termination returns an error. Cancellation pthread_join, pthread_tryjoin_np and pthread_timedjoin_np are cancellation points. If a thread is cancelled while suspended in either function, the thread execution resumes immediately and the cancellation is executed without waiting for the th thread to terminate. If cancellation occurs during either function, the th thread remains not joined. Return Value On success, the return value of th is stored in the location pointed to by thread_return, and 0 is returned. On error, a non-zero error code is returned. Errors ESRCH No thread could be found corresponding to that specified by th. EINVAL The th thread has been detached. EINVAL An
top pthread_join - join with a terminated thread SYNOPSIS top #include