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PTHREAD_JOIN(3)            Library Functions Manual            PTHREAD_JOIN(3)

NAME
     pthread_join -- wait for thread termination

LIBRARY
     POSIX Threads Library (libpthread, -lpthread)

SYNOPSIS
     #include <pthread.h>

     int
     pthread_join(pthread_t thread, void **value_ptr);

DESCRIPTION
     The pthread_join() function suspends 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 is
     stored in the location referenced by value_ptr.  When 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
     cancelled, then the target thread is not detached.

     A thread that has exited but remains unjoined counts against
     _POSIX_THREAD_THREADS_MAX.

RETURN VALUES
     If successful,  the pthread_join() function will return zero.  Otherwise
     an error number will be returned to indicate the error.

ERRORS
     pthread_join() shall fail if:

     [EINVAL]           The value specified by thread does not refer to a
                        joinable thread.

     [ESRCH]            No thread could be found corresponding to that
                        specified by the given thread ID, thread.

     pthread_join() may fail if:

     [EDEADLK]          A deadlock was detected or the value of thread
                        specifies the calling thread.

SEE ALSO
     wait(2), pthread_create(3)

STANDARDS
     The function conforms to IEEE Std 1003.1-2001 (``POSIX.1'').

NetBSD 7.1.2                     July 9, 2010                     NetBSD 7.1.2