1.\" Copyright (c) 1997 Brian Cully <shmit@kublai.com> 2.\" All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. 9.\" 2. Redistributions in binary form must reproduce the above copyright 10.\" notice, this list of conditions and the following disclaimer in the 11.\" documentation and/or other materials provided with the distribution. 12.\" 3. Neither the name of the author nor the names of any co-contributors 13.\" may be used to endorse or promote products derived from this software 14.\" without specific prior written permission. 15.\" 16.\" THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``AS IS'' AND 17.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 20.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26.\" SUCH DAMAGE. 27.\" 28.\" $Id$ 29.\" 30.Dd July 28, 1998 31.Dt PTHREAD_COND_INIT 3 32.Os BSD 4 33.Sh NAME 34.Nm pthread_cond_init 35.Nd create a condition variable 36.Sh SYNOPSIS 37.Fd #include <pthread.h> 38.Ft int 39.Fn pthread_cond_init "pthread_cond_t *cond" "const pthread_condattr_t *attr" 40.Sh DESCRIPTION 41The 42.Fn pthread_cond_init 43function creates a new condition variable, with attributes specified with 44.Fa attr . 45If 46.Fa attr 47is NULL the default attributes are used. 48.Sh RETURN VALUES 49If successful, the 50.Fn pthread_cond_init 51function will return zero and put the new condition variable id into 52.Fa cond , 53otherwise an error number will be returned to indicate the error. 54.Sh ERRORS 55.Fn pthread_cond_init 56will fail if: 57.Bl -tag -width Er 58.It Bq Er EINVAL 59The value specified by 60.Fa attr 61is invalid. 62.It Bq Er ENOMEM 63The process cannot allocate enough memory to create another condition 64variable. 65.It Bq Er EAGAIN 66The temporarily lacks the resources to create another condition variable. 67.El 68.Pp 69.Sh SEE ALSO 70.Xr pthread_cond_broadcast 3 , 71.Xr pthread_cond_destroy 3 , 72.Xr pthread_cond_signal 3 , 73.Xr pthread_cond_timedwait 3 , 74.Xr pthread_cond_wait 3 75.Sh STANDARDS 76.Fn pthread_cond_init 77conforms to ISO/IEC 9945-1 ANSI/IEEE 78.Pq Dq Tn POSIX 79Std 1003.1 Second Edition 1996-07-12. 80