pthread_join(3) [osf1 man page]

pthread_join(3) 					     Library Functions Manual						   pthread_join(3)

NAME

       pthread_join - Causes the calling thread to wait for the termination of the specified thread.

LIBRARY

       DECthreads POSIX 1003.1c Library (libpthread.so)

SYNOPSIS

       #include <pthread.h>

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

STANDARDS

       Interfaces documented on this reference page conform to industry standards as follows:

       IEEE Std 1003.1c-1995, POSIX System Application Program Interface

PARAMETERS

       Thread  whose  termination  is  awaited	by  the  calling  routine.   Return value of the terminating thread (when that thread either calls
       pthread_exit(3) or returns from its start routine).

DESCRIPTION

       This routine suspends execution of the calling thread until the specified target thread thread terminates.

       On return from a successful pthread_join(3) call with a non-NULL value_ptr argument, the value passed to pthread_exit(3) is returned in the
       location referenced by value_ptr, and the terminating thread is detached.

       If more than one thread attempts to join with the same thread, the results are unpredictable.

       A  call	to  pthread_join(3) returns after the target thread terminates.  The pthread_join(3) routine is a deferred cancelation point:  the
       target thread will not be detached if the thread blocked in pthread_join(3) is canceled.

       If a thread calls this routine and specifies its own pthread_t, a deadlock can result.

       The pthread_join(3) (or pthread_detach(3)) routine should eventually be called for every  thread  that  is  created  with  the  detachstate
       attribute of its thread attributes object set to PTHREAD_CREATE_JOINABLE, so that storage associated with the thread can be reclaimed.

RETURN VALUES

       If  an  error condition occurs, this routine returns an integer value indicating the type of error.  Possible return values are as follows:
       Successful completion.  The value specified by thread does not refer to a joinable thread.  The value specified by thread does not refer to
       an existing thread ID.  A deadlock was detected, or thread specifies the calling thread.

ERRORS

       None

RELATED INFORMATION

       Functions: pthread_cancel(3), pthread_create(3), pthread_detach(3), pthread_exit(3)

       Manuals: Guide to DECthreads and Programmer's Guide

       delim off

																   pthread_join(3)

pthread_join(3C)														  pthread_join(3C)

NAME

       pthread_join - wait for thread termination

SYNOPSIS

       cc -mt [ flag... ] file... -lpthread [ library... ]
       #include <pthread.h>

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

       The  pthread_join()  function  suspends	processing of the calling thread until the target thread completes. thread must be a member of the
       current process and it cannot be a detached thread. See pthread_create(3C).

       If two or more threads wait for the same thread to complete, all will suspend processing until the thread  has  terminated,  and  then  one
       thread will return successfully and the others will return with an error of ESRCH. The pthread_join() function will not block processing of
       the calling thread if the target thread has already terminated.

       If a pthread_join() call returns successfully with a non-null status argument, the value passed	to  pthread_exit(3C)  by  the  terminating
       thread will be placed in the location referenced by status.

       If  the	pthread_join()	calling  thread  is cancelled, then the target thread will remain joinable by pthread_join(). However, the calling
       thread may set up a cancellation cleanup handler on thread prior to  the  join  call,  which  may  detach  the  target  thread  by  calling
       pthread_detach(3C). See pthread_detach(3C) and pthread_cancel(3C).

       If successful, pthread_join() returns 0. Otherwise, an error number is returned to indicate the error.

       EDEADLK	       A joining deadlock would occur, such as when a thread attempts to wait for itself.

       EINVAL	       The thread corresponding to the given thread ID is a detached thread.

       ESRCH	       No thread could be found corresponding to the given thread ID.

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Standard			   |
       +-----------------------------+-----------------------------+
       |MT-Level		     |MT-Safe			   |
       +-----------------------------+-----------------------------+

       pthread_cancel(3C), pthread_create(3C), pthread_detach(3C), pthread_exit(3C), wait(3C), attributes(5), standards(5)

       The pthread_join(3C) function must specify the thread ID for whose termination it will wait.

       Calling	pthread_join()	also  "detaches"  the  thread;	that is, pthread_join() includes the effect of the pthread_detach() function. If a
       thread were to be cancelled when blocked in pthread_join(), an explicit detach would have to be performed in the cancellation cleanup  han-
       dler. The pthread_detach() function exists primarily for this purpose.

								    23 Mar 2005 						  pthread_join(3C)