NetBSD/lib/libpthread/pthread.3

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.\" $NetBSD: pthread.3,v 1.7 2007/11/19 15:53:20 ad Exp $
.\"
.\" Copyright (c) 2003 Hubert Feyrer <hubertf@NetBSD.org>
.\" and Thomas Klausner <wiz@NetBSD.org>
.\" 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. The name of the authors may not be used to endorse or promote products
.\" derived from this software without specific prior written permission.
.\"
.\" THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``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 AUTHORS 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,
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
.Dd November 19, 2007
.Dt PTHREAD 3
.Os
.Sh NAME
.Nm pthread
.Nd POSIX Threads Library
.Sh LIBRARY
.Lb libpthread
.Sh SYNOPSIS
.In pthread.h
.Pp
.Nm cc
.Op Ar flags
.Ar files
.Fl lpthread
.Op Ar libraries
.Sh DESCRIPTION
The
.Nm
library provides an implementation of the standard
.Tn POSIX
threads framework.
.Pp
Note that the system private thread interfaces upon which the
.Nm
library is built are subject to change without notice.
In order to remain compatible with future
.Nx
releases, programs must be linked against the dynamic version of the
thread library.
Statically linked programs using the
.Tn POSIX
threads framework may not work when run on a future version of the system.
.Sh ENVIRONMENT
.Bl -tag -width PTHREAD_DEBUGCOUNTERSXX
.It Ev PTHREAD_CONCURRENCY
The current version of the system does not inspect this variable.
It is reserved for use by the
.Nm
library.
.It Ev PTHREAD_DIAGASSERT
Possible values are any combinations of:
.Bl -tag -width ignoreXX -offset indent -compact
.It Sy A
Ignore errors.
.It Sy a
Abort on errors, creating a core dump for further debugging.
.It Sy E
Do not log errors to stdout.
.It Sy e
Log errors to stdout.
.It Sy L
Do not log errors via
.Xr syslogd 8 .
.It Sy l
Log errors via
.Xr syslogd 8 .
.El
.It Ev PTHREAD_RRTIME
The current version of the system does not inspect this variable.
It is reserved for use by the
.Nm
library.
.It Ev PTHREAD_STACKSIZE
Integer value giving the stack size in kilobytes.
This allows to set a smaller stack size than the default stack size.
The default stack size is the current limit on the stack size as
set with the shell's command to change limits
.Ic ( limit
for
.Xr csh 1 ,
or
.Ic ulimit
for
.Xr sh 1 ) .
.El
.Sh SEE ALSO
.Xr pthread_attr 3 ,
.Xr pthread_barrier_destroy 3 ,
.Xr pthread_barrier_init 3 ,
.Xr pthread_barrier_wait 3 ,
.Xr pthread_barrierattr 3 ,
.Xr pthread_cancel 3 ,
.Xr pthread_cleanup_push 3 ,
.Xr pthread_cond_broadcast 3 ,
.Xr pthread_cond_destroy 3 ,
.Xr pthread_cond_init 3 ,
.Xr pthread_cond_wait 3 ,
.Xr pthread_condattr 3 ,
.Xr pthread_create 3 ,
.Xr pthread_detach 3 ,
.Xr pthread_equal 3 ,
.Xr pthread_exit 3 ,
.Xr pthread_getspecific 3 ,
.Xr pthread_join 3 ,
.Xr pthread_key_create 3 ,
.Xr pthread_key_delete 3 ,
.Xr pthread_kill 3 ,
.Xr pthread_mutex_destroy 3 ,
.Xr pthread_mutex_init 3 ,
.Xr pthread_mutex_lock 3 ,
.Xr pthread_mutex_unlock 3 ,
.Xr pthread_mutexattr 3 ,
.Xr pthread_once 3 ,
.Xr pthread_rwlock_destroy 3 ,
.Xr pthread_rwlock_init 3 ,
.Xr pthread_rwlock_rdlock 3 ,
.Xr pthread_rwlock_unlock 3 ,
.Xr pthread_rwlock_wrlock 3 ,
.Xr pthread_rwlockattr 3 ,
.Xr pthread_schedparam 3 ,
.Xr pthread_self 3 ,
.Xr pthread_setspecific 3 ,
.Xr pthread_sigmask 3 ,
.Xr pthread_spin_destroy 3 ,
.Xr pthread_spin_init 3 ,
.Xr pthread_spin_lock 3 ,
.Xr pthread_spin_unlock 3 ,
.Xr pthread_testcancel 3
.Sh STANDARDS
The
.Nm
library conforms to
.St -p1003.1-2001 .