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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_READ_LOCK 3
.Sh NAME
.Nm CK_RWCOHORT_READ_LOCK
.Nd acquire read-only permission for cohort-based reader-writer lock
.Sh LIBRARY
Concurrency Kit (libck, \-lck)
.Sh SYNOPSIS
.In ck_cohort.h
.Fn CK_RWCOHORT_NEUTRAL_READ_LOCK "COHORT_NAME cohort_name" "LOCK *lock" "COHORT *cohort"\
"void *global_context" "void *local_context"
.Fn CK_RWCOHORT_RP_READ_LOCK "COHORT_NAME cohort_name" "LOCK *lock" "COHORT *cohort"\
"void *global_context" "void *local_context"
.Fn CK_RWCOHORT_WP_READ_LOCK "COHORT_NAME cohort_name" "LOCK *lock" "COHORT *cohort"\
"void *global_context" "void *local_context"
.Sh DESCRIPTION
This call will acquire read-only permission from
.Fa lock .
The call will block until this permission has been acquired.
.Fa cohort
must point to a cohort whose global lock is the same as all other cohorts used with
.Fa lock .
The
.Fa global_context
and
.Fa local_context
arguments will be passed along as the context arguments to any calls to
.Fa cohort .
.
.Sh SEE ALSO
.Xr ck_cohort 3 ,
.Xr CK_RWCOHORT_PROTOTYPE 3 ,
.Xr CK_RWCOHORT_INSTANCE 3 ,
.Xr CK_RWCOHORT_INITIALIZER 3 ,
.Xr CK_RWCOHORT_INIT 3 ,
.Xr CK_RWCOHORT_READ_UNLOCK 3 ,
.Xr CK_RWCOHORT_WRITE_LOCK 3 ,
.Xr CK_RWCOHORT_WRITE_UNLOCK 3 ,
.Pp
Additional information available at http://concurrencykit.org/
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