1c0e36632SAlexander Langer.\" Copyright (c) 1998 Alex Nash 2c0e36632SAlexander Langer.\" All rights reserved. 3c0e36632SAlexander Langer.\" 4c0e36632SAlexander Langer.\" Redistribution and use in source and binary forms, with or without 5c0e36632SAlexander Langer.\" modification, are permitted provided that the following conditions 6c0e36632SAlexander Langer.\" are met: 7c0e36632SAlexander Langer.\" 1. Redistributions of source code must retain the above copyright 8c0e36632SAlexander Langer.\" notice, this list of conditions and the following disclaimer. 9c0e36632SAlexander Langer.\" 2. Redistributions in binary form must reproduce the above copyright 10c0e36632SAlexander Langer.\" notice, this list of conditions and the following disclaimer in the 11c0e36632SAlexander Langer.\" documentation and/or other materials provided with the distribution. 12c0e36632SAlexander Langer.\" 13c0e36632SAlexander Langer.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 14c0e36632SAlexander Langer.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15c0e36632SAlexander Langer.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 16c0e36632SAlexander Langer.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 17c0e36632SAlexander Langer.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 18c0e36632SAlexander Langer.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 19c0e36632SAlexander Langer.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 20c0e36632SAlexander Langer.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 21c0e36632SAlexander Langer.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 22c0e36632SAlexander Langer.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 23c0e36632SAlexander Langer.\" SUCH DAMAGE. 24c0e36632SAlexander Langer.\" 25c0e36632SAlexander Langer.Dd August 4, 1998 26c0e36632SAlexander Langer.Dt PTHREAD_RWLOCK_UNLOCK 3 27c0e36632SAlexander Langer.Os 28c0e36632SAlexander Langer.Sh NAME 29c0e36632SAlexander Langer.Nm pthread_rwlock_unlock 30c0e36632SAlexander Langer.Nd release a read/write lock 31d8a78688SAlexey Zelkin.Sh LIBRARY 32ec7452f1SRuslan Ermilov.Lb libpthread 33c0e36632SAlexander Langer.Sh SYNOPSIS 3432eef9aeSRuslan Ermilov.In pthread.h 35c0e36632SAlexander Langer.Ft int 36c0e36632SAlexander Langer.Fn pthread_rwlock_unlock "pthread_rwlock_t *lock" 37c0e36632SAlexander Langer.Sh DESCRIPTION 38c0e36632SAlexander LangerThe 39c0e36632SAlexander Langer.Fn pthread_rwlock_unlock 40c0e36632SAlexander Langerfunction is used to release the read/write lock previously obtained by 41c0e36632SAlexander Langer.Fn pthread_rwlock_rdlock , 42c0e36632SAlexander Langer.Fn pthread_rwlock_wrlock , 43c0e36632SAlexander Langer.Fn pthread_rwlock_tryrdlock , 44c0e36632SAlexander Langeror 45c0e36632SAlexander Langer.Fn pthread_rwlock_trywrlock . 46c0e36632SAlexander Langer.Sh RETURN VALUES 47c0e36632SAlexander LangerIf successful, the 48c0e36632SAlexander Langer.Fn pthread_rwlock_unlock 495203edcdSRuslan Ermilovfunction will return zero. 505203edcdSRuslan ErmilovOtherwise an error number will be returned 51c0e36632SAlexander Langerto indicate the error. 52c0e36632SAlexander Langer.Pp 53c0e36632SAlexander LangerThe results are undefined if 54c0e36632SAlexander Langer.Fa lock 55c0e36632SAlexander Langeris not held by the calling thread. 56c0e36632SAlexander Langer.Sh ERRORS 57c0e36632SAlexander LangerThe 58c0e36632SAlexander Langer.Fn pthread_rwlock_unlock 59c0e36632SAlexander Langerfunction may fail if: 60c0e36632SAlexander Langer.Bl -tag -width Er 61c0e36632SAlexander Langer.It Bq Er EINVAL 62c0e36632SAlexander LangerThe value specified by 63c0e36632SAlexander Langer.Fa lock 64c0e36632SAlexander Langeris invalid. 65c0e36632SAlexander Langer.It Bq Er EPERM 66c0e36632SAlexander LangerThe current thread does not own the read/write lock. 67c0e36632SAlexander Langer.El 689cbda590SRuslan Ermilov.Sh SEE ALSO 699cbda590SRuslan Ermilov.Xr pthread_rwlock_rdlock 3 , 709cbda590SRuslan Ermilov.Xr pthread_rwlock_wrlock 3 719cbda590SRuslan Ermilov.Sh STANDARDS 729cbda590SRuslan ErmilovThe 739cbda590SRuslan Ermilov.Fn pthread_rwlock_unlock 749cbda590SRuslan Ermilovfunction is expected to conform to 759cbda590SRuslan Ermilov.St -susv2 . 76c0e36632SAlexander Langer.Sh HISTORY 77c0e36632SAlexander LangerThe 78c0e36632SAlexander Langer.Fn pthread_rwlock_unlock 79c0e36632SAlexander Langerfunction first appeared in 80c0e36632SAlexander Langer.Fx 3.0 . 81