Pthread Join Error 22
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Pthread Error Codes
Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting pthread_create error 22 ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 6.2 million pthread error code 22 programmers, just like you, helping each other. Join them; it only takes a minute: Sign up Difficulty Creating Pthreads (Error 22) up vote 0 down vote favorite Learning about pthreads, but I'm having trouble getting them created. Here is my output and the gdb information: In main(), creating thread 1 ERROR: return code from pthread_create()
Pthread_create Error Code 22
is 22 for thread 1 In main(), creating thread 2 ERROR: return code from pthread_create() is 22 for thread 2 In main(), creating thread 3 ERROR: return code from pthread_create() is 22 for thread 3 In main(), creating thread 4 ERROR: return code from pthread_create() is 22 for thread 4 In main(), creating thread 5 ERROR: return code from pthread_create() is 22 for thread 5 Program received signal SIGSEGV, Segmentation fault. 0xb7fb4d8a in pthread_join (threadid=76038327, thread_return=0x0) at pthread_join.c:46 46 pthread_join.c: No such file or directory. And here is my code: #include
join another thread without waiting Synopsis #include
Gdb Pthread_join C No Such File Or Directory
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 must be in the joinable state: it must not have http://stackoverflow.com/questions/15037234/difficulty-creating-pthreads-error-22 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 that it will return the error ETIMEDOUT if the target thread th has not exited before https://www.sourceware.org/pthreads-win32/manual/pthread_join.html 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 Another thread is already waiting on termination of th. ETIMEDOUT (pthread_timedjoin_np only): abstime passed before th could be joined. EDEADLK The th argument refers to the calling thread. Author Xavier Leroy
[THR] #include <pthread.h>
int pthread_join(pthread_t thread, void **value_ptr); http://pubs.opengroup.org/onlinepubs/009695399/functions/pthread_join.html "[Option End]" border="0"> DESCRIPTION The pthread_join() function shall suspend execution of the calling thread until the target thread terminates, unless the target thread has already terminated. On return from a successful pthread_join() call with a non-NULL value_ptr argument, the value passed to pthread_exit() by the terminating thread shall be made available in the location referenced by value_ptr. When error code a pthread_join() returns successfully, the target thread has been terminated. The results of multiple simultaneous calls to pthread_join() specifying the same target thread are undefined. If the thread calling pthread_join() is canceled, then the target thread shall not be detached. It is unspecified whether a thread that has exited but remains unjoined counts against {PTHREAD_THREADS_MAX}. RETURN VALUE If pthread error code successful, the pthread_join() function shall return zero; otherwise, an error number shall be returned to indicate the error. ERRORS The pthread_join() function shall fail if: [ESRCH] No thread could be found corresponding to that specified by the given thread ID. The pthread_join() function may fail if: [EDEADLK] A deadlock was detected or the value of thread specifies the calling thread. [EINVAL] The value specified by thread does not refer to a joinable thread. The pthread_join() function shall not return an error code of [EINTR]. The following sections are informative. EXAMPLES An example of thread creation and deletion follows: typedef struct { int *ar; long n; } subarray; void * incer(void *arg) { long i; for (i = 0; i < ((subarray *)arg)->n; i++) ((subarray *)arg)->ar[i]++; } int main(void) { int ar[1000000]; pthread_t th1, th2; subarray sb1, sb2; sb1.ar = &ar[0]; sb1.n = 500000; (void) pthread_create(&th1, NULL, incer, &sb1); sb2.ar = &ar[500000]; sb2.n = 500000; (void) pthread_create(&th2, NULL, incer, &sb2); (void) pthread_join(th1, NULL); (void) pthread_join(th2, NULL); return 0; } APPLICATION USAGE None. RATI