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.\"
.\" Copyright 2013 Brendon Scheinman.
.\" 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.
.\"
.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
.\"
.Dd February 24, 2013.
.Dt CK_RWCOHORT_INSTANCE 3
.Sh NAME
.Nm CK_RWCOHORT_INSTANCE
.Nd declare an instance of a cohort-based reader-writer lock type
.Sh LIBRARY
Concurrency Kit (libck, \-lck)
.Sh SYNOPSIS
.In ck_cohort.h
.Fn CK_RWCOHORT_NEUTRAL_INSTANCE "COHORT_NAME cohort_name"
.Fn CK_RWCOHORT_RP_INSTANCE "COHORT_NAME cohort_name"
.Fn CK_RWCOHORT_WP_INSTANCE "COHORT_NAME cohort_name"
.Sh DESCRIPTION
The user must use this macro to declare instances of lock types that they have
defined using the
.Xr CK_RWCOHORT_PROTOTYPE 3
macro. The cohort_name must be the same as the one used in the prototype macro.
For instance, if CK_RWCOHORT_PROTOTYPE was called with the name "foo", the
CK_RWCOHORT_INSTANCE macro should be called as
.br
CK_RWCOHORT_INSTANCE(foo) cohort;
.Pp
This macro should also be used when allocating memory for cohorts. For instance,
to allocate a block of 4 cohorts:
.br
CK_RWCOHORT_WP_INSTANCE(foo) *cohorts = malloc(4 * sizeof(CK_RWCOHORT_WP_INSTANCE(foo)));
.Sh SEE ALSO
.Xr ck_rwcohort 3 ,
.Xr CK_RWCOHORT_PROTOTYPE 3 ,
.Xr CK_RWCOHORT_TRYLOCK_PROTOTYPE 3 ,
.Xr CK_RWCOHORT_INSTANCE 3 ,
.Xr CK_RWCOHORT_INITIALIZER 3 ,
.Xr CK_RWCOHORT_LOCK 3 ,
.Xr CK_RWCOHORT_UNLOCK 3 ,
.Xr CK_RWCOHORT_LOCKED 3 ,
.Xr CK_RWCOHORT_TRYLOCK 3 ,
.Pp
Additional information available at http://concurrencykit.org/
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