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.\"
.\" Copyright 2012-2013 Samy Al Bahra.
.\" 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 September 2, 2012
.Dt CK_EPOCH_BEGIN 3
.Sh NAME
.Nm ck_epoch_begin
.Nd begin epoch-protected segment of execution
.Sh LIBRARY
Concurrency Kit (libck, \-lck)
.Sh SYNOPSIS
.In ck_epoch.h
.Ft void
.Fn ck_epoch_begin "ck_epoch_record_t *record" "ck_epoch_section_t *section"
.Sh DESCRIPTION
The
.Fn ck_epoch_begin 3
function will mark the beginning of an epoch-protected code section.
An epoch-protected code section is delimited by a call to the
.Fn ck_epoch_end 3
function. Though recursion is allowed for epoch-protected sections,
recursive calls will be associated with the
.Fn ck_epoch_begin 3
that is at the top of the call stack. If a section is passed, then
recursion on a record will cause the epoch to be refreshed on entry
of every protected section.
.Sh RETURN VALUES
This function has no return value.
.Sh ERRORS
The object pointed to by
.Fa epoch
must have been previously initiated via
.Fn ck_epoch_init 3 .
The object pointed to by
.Fa record
must have been previously registered via
.Fn ck_epoch_register 3 .
.Sh SEE ALSO
.Xr ck_epoch_init 3 ,
.Xr ck_epoch_register 3 ,
.Xr ck_epoch_unregister 3 ,
.Xr ck_epoch_recycle 3 ,
.Xr ck_epoch_poll 3 ,
.Xr ck_epoch_synchronize 3 ,
.Xr ck_epoch_reclaim 3 ,
.Xr ck_epoch_barrier 3 ,
.Xr ck_epoch_call 3 ,
.Xr ck_epoch_end 3
.Pp
Additional information available at http://concurrencykit.org/
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