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.Dd July 28, 1998 29.Dt PTHREAD_COND_INIT 3 30.Os BSD 4 31.Sh NAME 32.Nm pthread_cond_init 33.Nd create a condition variable 34.Sh SYNOPSIS 35.Fd #include <pthread.h> 36.Ft int 37.Fn pthread_cond_init "pthread_cond_t *cond" "const pthread_condattr_t *attr" 38.Sh DESCRIPTION 39The 40.Fn pthread_cond_init 41function creates a new condition variable, with attributes specified with 42.Fa attr . 43If 44.Fa attr 45is NULL the default attributes are used. 46.Sh RETURN VALUES 47If successful, the 48.Fn pthread_cond_init 49function will return zero and put the new condition variable id into 50.Fa cond , 51otherwise an error number will be returned to indicate the error. 52.Sh ERRORS 53.Fn pthread_cond_init 54will fail if: 55.Bl -tag -width Er 56.It Bq Er EINVAL 57The value specified by 58.Fa attr 59is invalid. 60.It Bq Er ENOMEM 61The process cannot allocate enough memory to create another condition 62variable. 63.It Bq Er EAGAIN 64The temporarily lacks the resources to create another condition variable. 65.El 66.Pp 67.Sh SEE ALSO 68.Xr pthread_cond_broadcast 3 , 69.Xr pthread_cond_destroy 3 , 70.Xr pthread_cond_signal 3 , 71.Xr pthread_cond_timedwait 3 , 72.Xr pthread_cond_wait 3 73.Sh STANDARDS 74.Fn pthread_cond_init 75conforms to ISO/IEC 9945-1 ANSI/IEEE 76.Pq Dq Tn POSIX 77Std 1003.1 Second Edition 1996-07-12. 78