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.\"
.\" Copyright 2013 Brendon Scheinman.
.\" All rights reserved.
.\"
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.\" modification, are permitted provided that the following conditions
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\"
.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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.\" 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
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.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/