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/****************************************************************
* *
* Copyright (c) 2006-2020 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 "gtm_string.h"
#include "gtm_stdio.h"
#if !defined(__MVS__) && !defined(VMS)
#include <sys/param.h>
#endif
#include <sys/time.h>
#include "gtm_inet.h"
#include <errno.h>
#ifdef VMS
#include <descrip.h> /* Required for gtmsource.h */
#endif
#include "error.h"
#include "gdsroot.h"
#include "gdsblk.h"
#include "gtm_facility.h"
#include "fileinfo.h"
#include "gdsbt.h"
#include "gdsfhead.h"
#include "filestruct.h"
#include "repl_msg.h"
#include "gtmsource.h"
#include "repl_dbg.h"
#include "repl_shutdcode.h"
#include "repl_sem.h"
#include "util.h"
#include "repl_log.h"
#include "is_proc_alive.h"
GBLREF jnlpool_addrs_ptr_t jnlpool;
GBLREF gtmsource_options_t gtmsource_options;
seq_num gtmsource_checkforbacklog(void)
{
seq_num seq_num, heartbeat_jnl_seqno, jnl_seqno, read_jnl_seqno, backlog_count = 0;
gtmsource_local_ptr_t gtmsourcelocal_ptr;
int4 index;
boolean_t srv_alive;
uint4 gtmsource_pid;
jnl_seqno = jnlpool->jnlpool_ctl->jnl_seqno;
if (NULL != jnlpool->gtmsource_local)
gtmsourcelocal_ptr = jnlpool->gtmsource_local;
else
gtmsourcelocal_ptr = &jnlpool->gtmsource_local_array[0];
for (index = 0; index < NUM_GTMSRC_LCL; index++, gtmsourcelocal_ptr++)
{
if ('\0' == gtmsourcelocal_ptr->secondary_instname[0])
{
assert(NULL == jnlpool->gtmsource_local);
continue;
}
gtmsource_pid = gtmsourcelocal_ptr->gtmsource_pid;
/* 0 == gtmsource_pid evaluates to TRUE when a Source Server has been shut down */
if ((NULL == jnlpool->gtmsource_local) && (0 == gtmsource_pid))
continue;
read_jnl_seqno = gtmsourcelocal_ptr->read_jnl_seqno;
heartbeat_jnl_seqno = gtmsourcelocal_ptr->heartbeat_jnl_seqno;
/* jnl_seqno >= read_jnl_seqno is the most common case; see gtmsource_readpool() for when the rare case can occur */
seq_num = (jnl_seqno >= read_jnl_seqno) ? jnl_seqno - read_jnl_seqno : 0;
/* read_jnl_seqno is 1 for empty databases */
if ((seq_num == 0) && (read_jnl_seqno != 1))
seq_num = (read_jnl_seqno > heartbeat_jnl_seqno) ? 1 : 0;
backlog_count += seq_num;
if (NULL != jnlpool->gtmsource_local)
break;
}
return backlog_count; /* backlog_count is non-zero when any one Source Server has a backlog and -INST is not specified. */
}
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