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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/