1.\" $OpenBSD: pthread_spin_unlock.3,v 1.2 2013/06/05 03:44:50 tedu Exp $ 2.\" 3.\" Copyright (c) 2012 Paul Irofti <pirofti@openbsd.org> 4.\" 5.\" Permission to use, copy, modify, and distribute this software for any 6.\" purpose with or without fee is hereby granted, provided that the above 7.\" copyright notice and this permission notice appear in all copies. 8.\" 9.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 10.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 11.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 12.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 13.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 14.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 15.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 16.\" 17.\" 18.Dd $Mdocdate: June 5 2013 $ 19.Dt PTHREAD_SPIN_UNLOCK 3 20.Os 21.Sh NAME 22.Nm pthread_spin_unlock 23.Nd unlock a spinlock object 24.Sh SYNOPSIS 25.In pthread.h 26.Ft int 27.Fn pthread_spin_unlock "pthread_spinlock_t *lock" 28.Sh DESCRIPTION 29The 30.Fn pthread_spin_unlock 31function releases the spin lock referenced by 32.Fa lock 33which was locked via the 34.Fn pthread_spin_lock 35or 36.Fn pthread_spin_trylock 37functions. 38.Sh RETURN VALUES 39If successful, 40.Fn pthread_spin_unlock 41returns zero; otherwise an error number is returned to indicate the error. 42.Sh ERRORS 43.Fn pthread_spin_unlock 44will fail if: 45.Bl -tag -width Er 46.It Bq Er EINVAL 47The value specified by 48.Fa lock 49is invalid. 50.It Bq Er EPERM 51The lock is not owned by the calling thread. 52.El 53.Sh SEE ALSO 54.Xr pthread_spin_init 3 , 55.Xr pthread_spin_lock 3 56.Sh STANDARDS 57.Fn pthread_spin_unlock 58conforms to 59.St -p1003.1-2008 . 60