pthread_join - wait for thread termination
pthread_join(pthread_t thread, void **value_ptr);
The pthread_join() function suspends execution of the calling thread until
the target thread terminates unless the target thread
On return from a successful pthread_join() call with a nonNULL value_ptr
argument, the value passed to pthread_exit() by the terminating thread is
stored in the location referenced by value_ptr. When a
returns successfully, the target thread has been terminated.
of multiple simultaneous calls to pthread_join() specifying
the same target
thread are undefined. If the thread calling
pthread_join() is cancelled,
then the target thread is not detached.
A thread that has exited but remains unjoined counts against
If successful, the pthread_join() function will return zero.
an error number will be returned to indicate the error.
pthread_join() will fail if:
[EINVAL] The implementation has detected that the value
thread does not refer to a joinable thread.
[ESRCH] No thread could be found corresponding to that
the given thread ID, thread.
[EDEADLK] A deadlock was detected or the value of thread
the calling thread.
pthread_join() conforms to ISO/IEC 9945-1:1996 (``POSIX'').
OpenBSD 3.6 April 4, 1996
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