c6ff3a1bf7
of the typeset output, tend to make diffs harder to read and provide bad examples for new-comers to mdoc.
106 lines
3.4 KiB
Groff
106 lines
3.4 KiB
Groff
.\" Copyright (c) 1996-1998 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.
|
|
.\"
|
|
.\" $FreeBSD$
|
|
.\"
|
|
.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 wait 2 ,
|
|
.Xr pthread_create 3
|
|
.Sh STANDARDS
|
|
.Fn pthread_join
|
|
conforms to ISO/IEC 9945-1 ANSI/IEEE
|
|
.Pq Dq Tn POSIX
|
|
Std 1003.1 Second Edition 1996-07-12.
|