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/****************************************************************
* *
* Copyright (c) 2001-2017 Fidelity National Information *
* Services, Inc. and/or its subsidiaries. All rights reserved. *
* *
* This source code contains the intellectual property *
* of its copyright holder(s), and is made available *
* under a license. If you do not know the terms of *
* the license, please stop and do not read further. *
* *
****************************************************************/
#include "mdef.h"
#include "gdsroot.h"
#include "gtm_facility.h"
#include "gdskill.h"
#include "fileinfo.h"
#include "gdsbt.h"
#include "gdsblk.h"
#include "gdsfhead.h"
#include "filestruct.h"
#include "gdscc.h"
#include "jnl.h"
#include "gt_timer.h" /* for TID definition */
#include "timers.h" /* for TIM_DEFER_DBSYNC #define */
#include "have_crit.h"
#include "wcs_clean_dbsync.h"
#include "gtm_reservedDB.h"
GBLREF uint4 process_id;
void wcs_clean_dbsync_timer(sgmnt_addrs *csa)
{
/* Don't start a timer if we are in wcs_flu(). We could possibly have rundown the region when
* the timer pops. In any case wcs_flu() would take care of writing the epoch if needed.
* Note that in VMS the check for wcsflu_pid is !cnl->wcsflu_pid while here is process_id != cnl->wcsflu_pid
* This is because in VMS, if a process gets killed in the midst of a wcs_flu(), secshr_db_clnup takes care
* of cleaning it up while there is currently no such facility in Unix. This means that in Unix, it is
* possible we do two dbsyncs (in turn write 2 epochs records if before imaging) one when the wcs_wtstart of
* process P1 empties the queue and another by the wcs_flu() of process P2 (waiting on P1 to finish
* its wcs_wtstart). But this is considered infrequent enough to be better than skipping writing an
* epoch due to incorrect cnl->wcsflu_pid.
*
* Note setting timer also bypassed if this is an statsDB as no flush is ever needed/used.
*/
if (!process_exiting && (process_id != csa->nl->wcsflu_pid) && (FALSE == csa->dbsync_timer))
START_DBSYNC_TIMER(csa, TIM_DEFER_DBSYNC);
return;
}
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