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+.\" Copyright (c) 1996 John Birrell <jb@cimlogic.com.au>.
+.\" All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by John Birrell.
+.\" 4. Neither the name of the author nor the names of any co-contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.Dd April 4, 1996
+.Dt PTHREAD_JOIN 3
+.Os BSD 4
+.Sh NAME
+.Nm pthread_join
+.Nd wait for thread termination
+.Sh SYNOPSIS
+.Fd #include <pthread.h>
+.Ft int
+.Fn pthread_join "pthread_t thread" "void **value_ptr"
+.Sh DESCRIPTION
+The
+.Fn pthread_join
+function suspends execution of the calling thread until the target
+.Fa thread
+terminates unless the target
+.Fa thread
+has already terminated.
+.Pp
+On return from a successful
+.Fn pthread_join
+call with a non-NULL
+.Fa value_ptr
+argument, the value passed to
+.Fn pthread_exit
+by the terminating thread is stored in the location referenced by
+.Fa value_ptr .
+When a
+.Fn pthread_join
+returns successfully, the target thread has been terminated. The results
+of multiple simultaneous calls to
+.Fn pthread_join
+specifying the same target thread are undefined. If the thread calling
+.Fn pthread_join
+is cancelled, then the target thread is not detached.
+.Pp
+A thread that has exited but remains unjoined counts against
+[_POSIX_THREAD_THREADS_MAX].
+.Pp
+.Sh RETURN VALUES
+If successful,  the
+.Fn pthread_join
+function will return zero. Otherwise an error number will be returned to
+indicate the error.
+.Sh ERRORS
+.Fn pthread_join
+will fail if:
+.Bl -tag -width Er
+.It Bq Er EINVAL
+The implementation has detected that the value specified by
+.Fa thread
+does not refer to a joinable thread.
+.It Bq Er ESRCH
+No thread could be found corresponding to that specified by the given
+thread ID,
+.Fa thread .
+.It Bq Er EDEADLK
+A deadlock was detected or the value of
+.Fa thread
+specifies the calling thread.
+.El
+.Pp
+.Sh SEE ALSO
+.Xr pthread_create 3 ,
+.Xr wait 2
+.Sh STANDARDS
+.Fn pthread_join
+is expected to conform to IEEE
+.Pq Dq Tn POSIX
+Std 1003.1c when it is published.