fis-gtm/sr_unix/gtmrecv_end.c

194 lines
7.0 KiB
C

/****************************************************************
* *
* Copyright 2006, 2011 Fidelity Information Services, Inc *
* *
* 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_unistd.h" /* for close */
#include "gtm_string.h"
#include "gtm_ipc.h"
#include <sys/shm.h>
#include <sys/sem.h>
#include <sys/wait.h>
#include <errno.h>
#include "gtm_inet.h"
#include "gdsroot.h"
#include "gdsblk.h"
#include "gtm_facility.h"
#include "fileinfo.h"
#include "gdsbt.h"
#include "gdsfhead.h"
#include "filestruct.h"
#include "iosp.h"
#include "repl_shutdcode.h"
#include "gtmrecv.h"
#include "repl_dbg.h"
#include "gtm_stdio.h"
#include "gtm_event_log.h"
#include "eintr_wrappers.h"
#include "jnl.h"
#include "repl_filter.h"
#include "repl_msg.h"
#include "repl_sem.h"
#include "repl_log.h"
#include "is_proc_alive.h"
#include "gtmsource.h"
#include "gtmio.h"
GBLREF uint4 process_id;
GBLREF recvpool_addrs recvpool;
GBLREF int gtmrecv_filter;
GBLREF boolean_t gtmrecv_logstats;
GBLREF int gtmrecv_listen_sock_fd;
GBLREF int gtmrecv_sock_fd;
GBLREF int gtmrecv_log_fd;
GBLREF int gtmrecv_statslog_fd;
GBLREF FILE *gtmrecv_log_fp;
GBLREF FILE *gtmrecv_statslog_fp;
GBLREF qw_num repl_recv_data_recvd;
GBLREF qw_num repl_recv_data_processed;
GBLREF repl_msg_ptr_t gtmrecv_msgp;
GBLREF uchar_ptr_t repl_filter_buff;
GBLREF jnlpool_addrs jnlpool;
GBLREF jnlpool_ctl_ptr_t jnlpool_ctl;
GBLREF boolean_t pool_init;
int gtmrecv_endupd(void)
{
pid_t savepid;
int exit_status;
pid_t waitpid_res;
repl_log(stdout, TRUE, TRUE, "Initiating shut down of Update Process\n");
recvpool.upd_proc_local->upd_proc_shutdown = SHUTDOWN;
/* Wait for update process to shut down */
while((SHUTDOWN == recvpool.upd_proc_local->upd_proc_shutdown)
&& (0 < (savepid = (pid_t)recvpool.upd_proc_local->upd_proc_pid)) && is_proc_alive(savepid, 0))
{
SHORT_SLEEP(GTMRECV_WAIT_FOR_UPD_SHUTDOWN);
WAITPID(savepid, &exit_status, WNOHANG, waitpid_res); /* Release defunct update process if dead */
}
exit_status = recvpool.upd_proc_local->upd_proc_shutdown;
if (SHUTDOWN == exit_status)
{
if (0 == savepid) /* No Update Process */
exit_status = NORMAL_SHUTDOWN;
else /* Update Process Crashed */
{
repl_log(stderr, TRUE, TRUE, "Update Process exited abnormally, INTEGRITY CHECK might be warranted\n");
exit_status = ABNORMAL_SHUTDOWN;
}
}
/* Wait for the Update Process to detach */
if (0 == grab_sem(RECV, UPD_PROC_COUNT_SEM))
{
if(0 != (errno = rel_sem(RECV, UPD_PROC_COUNT_SEM)))
repl_log(stderr, TRUE, TRUE, "Error releasing the Update Process Count semaphore : %s\n", REPL_SEM_ERROR);
repl_log(stdout, TRUE, TRUE, "Update Process exited\n");
} else
{
repl_log(stderr, TRUE, TRUE, "Error in update proc count semaphore : %s\n", REPL_SEM_ERROR);
exit_status = ABNORMAL_SHUTDOWN;
}
return (exit_status);
}
int gtmrecv_end1(boolean_t auto_shutdown)
{
int4 strm_idx;
int exit_status, idx;
int fclose_res, rc;
seq_num log_seqno, log_seqno1, jnlpool_seqno, jnlpool_strm_seqno[MAX_SUPPL_STRMS];
uint4 savepid;
exit_status = gtmrecv_end_helpers(TRUE);
exit_status = gtmrecv_endupd();
log_seqno = recvpool.recvpool_ctl->jnl_seqno;
log_seqno1 = recvpool.upd_proc_local->read_jnl_seqno;
strm_idx = recvpool.gtmrecv_local->strm_index;
/* Detach from receive pool */
recvpool.gtmrecv_local->shutdown = exit_status;
recvpool.gtmrecv_local->recv_serv_pid = 0;
if (recvpool.recvpool_ctl && 0 > SHMDT(recvpool.recvpool_ctl))
repl_log(stderr, TRUE, TRUE, "Error detaching from Receive Pool : %s\n", REPL_STR_ERROR);
recvpool.recvpool_ctl = NULL;
assert((NULL != jnlpool_ctl) && (jnlpool_ctl == jnlpool.jnlpool_ctl));
if (NULL != jnlpool.jnlpool_ctl)
{ /* Reset fields that might have been initialized by the receiver server after connecting to the primary.
* It is ok not to hold the journal pool lock while updating jnlpool_ctl fields since this will be the
* only process updating those fields.
*/
jnlpool.jnlpool_ctl->primary_instname[0] = '\0';
jnlpool.jnlpool_ctl->gtmrecv_pid = 0;
jnlpool_seqno = jnlpool.jnlpool_ctl->jnl_seqno;
for (idx = 0; idx < MAX_SUPPL_STRMS; idx++)
jnlpool_strm_seqno[idx] = jnlpool.jnlpool_ctl->strm_seqno[idx];
/* Also take this opportunity to detach from the journal pool except in the auto_shutdown case. This is because
* the fields "jnlpool_ctl->repl_inst_filehdr->recvpool_semid" and "jnlpool_ctl->repl_inst_filehdr->recvpool_shmid"
* need to be reset by "gtmrecv_jnlpool_reset" (called from "gtmrecv_shutdown") which is invoked a little later.
*/
if (!auto_shutdown)
{
if (0 > SHMDT(jnlpool.jnlpool_ctl))
repl_log(stderr, TRUE, TRUE, "Error detaching from Journal Pool : %s\n", REPL_STR_ERROR);
jnlpool.jnlpool_ctl = jnlpool_ctl = NULL;
jnlpool.repl_inst_filehdr = NULL;
jnlpool.gtmsrc_lcl_array = NULL;
jnlpool.gtmsource_local_array = NULL;
jnlpool.jnldata_base = NULL;
pool_init = FALSE;
}
} else
jnlpool_seqno = 0;
gtmrecv_free_msgbuff();
gtmrecv_free_filter_buff();
recvpool.recvpool_ctl = NULL;
/* Close the connection with the Receiver */
if (FD_INVALID != gtmrecv_listen_sock_fd)
CLOSEFILE_RESET(gtmrecv_listen_sock_fd, rc); /* resets "gtmrecv_listen_sock_fd" to FD_INVALID */
if (FD_INVALID != gtmrecv_sock_fd)
CLOSEFILE_RESET(gtmrecv_sock_fd, rc); /* resets "gtmrecv_sock_fd" to FD_INVALID */
repl_log(gtmrecv_log_fp, TRUE, FALSE, "REPL INFO - Current Jnlpool Seqno : %llu\n", jnlpool_seqno);
for (idx = 0; idx < MAX_SUPPL_STRMS; idx++)
{
if (jnlpool_strm_seqno[idx])
repl_log(gtmrecv_log_fp, TRUE, FALSE, "REPL INFO - Stream # %d : Current Jnlpool Stream Seqno : %llu\n",
idx, jnlpool_strm_seqno[idx]);
}
if (0 < strm_idx)
repl_log(gtmrecv_log_fp, TRUE, FALSE, "REPL INFO - Receiver server has Stream # %d\n", strm_idx);
repl_log(gtmrecv_log_fp, TRUE, TRUE, "REPL INFO - Current Update process Read Seqno : %llu\n", log_seqno1);
repl_log(gtmrecv_log_fp, TRUE, TRUE, "REPL INFO - Current Receive Pool Seqno : %llu\n", log_seqno);
/* If log_seqno/log_seqno1 is 0, then do not decrement it as that will be interpreted as a huge positive seqno. Keep it 0 */
if (log_seqno)
log_seqno--;
if (log_seqno1)
log_seqno1--;
repl_log(gtmrecv_log_fp, TRUE, FALSE, "REPL INFO - Last Recvd Seqno : %llu Jnl Total : %llu Msg Total : %llu\n",
log_seqno, repl_recv_data_processed, repl_recv_data_recvd);
repl_log(gtmrecv_log_fp, TRUE, TRUE, "REPL INFO - Last Seqno processed by update process : %llu\n", log_seqno1);
gtm_event_log_close();
if (gtmrecv_filter & EXTERNAL_FILTER)
repl_stop_filter();
if (auto_shutdown)
return (exit_status);
else
gtmrecv_exit(exit_status - NORMAL_SHUTDOWN);
return -1; /* This will never get executed, added to make compiler happy */
}
void gtmrecv_end(void)
{
gtmrecv_end1(FALSE);
}