137 lines
3.7 KiB
C
137 lines
3.7 KiB
C
/****************************************************************
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* *
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* Copyright 2005 Fidelity Information Services, Inc. *
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* *
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* This source code contains the intellectual property *
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* of its copyright holder(s), and is made available *
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* under a license. If you do not know the terms of *
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* the license, please stop and do not read further. *
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* *
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****************************************************************/
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#include "mdef.h"
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#ifdef UNIX
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#include "gtm_ipc.h"
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#include <sys/sem.h>
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#include <sys/shm.h>
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#include <sys/un.h>
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#ifndef __MVS__
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#include <sys/param.h>
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#endif
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#elif defined(VMS)
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#include <psldef.h>
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#include <descrip.h> /* Required for gtmrecv.h */
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#include <ssdef.h>
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#endif
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#include "gdsroot.h"
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#include "gdsblk.h"
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#include "gtm_facility.h"
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#include "fileinfo.h"
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#include "gdsbt.h"
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#include "gdsfhead.h"
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#include "filestruct.h"
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#include "iosp.h"
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#include "repl_shutdcode.h"
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#include "gtmrecv.h"
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#include "read_db_files_from_gld.h"
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#include "updproc.h"
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#include "mupip_exit.h"
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#include "gtm_event_log.h"
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#include "repl_log.h"
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#ifdef VMS
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#include "repl_shm.h"
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#include "repl_sem.h"
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#endif
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GBLREF void (*call_on_signal)();
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GBLREF recvpool_addrs recvpool;
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GBLREF upd_helper_entry_ptr_t helper_entry;
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GBLREF int4 forced_exit_err;
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GBLREF int4 exi_condition;
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static void updhelper_common_cleanup(boolean_t exit)
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{ /* common cleanup actions for reader and writer */
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upd_helper_ctl_ptr_t upd_helper_ctl;
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uint4 status;
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error_def(ERR_FORCEDHALT);
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upd_helper_ctl = recvpool.upd_helper_ctl;
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if (NULL != helper_entry)
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{
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if (exit || ERR_FORCEDHALT == UNIX_ONLY(forced_exit_err) VMS_ONLY(exi_condition))
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{ /* Let the receiver know this was a clean shutdown and the slot is available for re-use. Checkhealth will not
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* report NOT alive for this type of shutdown */
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helper_entry->helper_shutdown = NORMAL_SHUTDOWN;
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} else
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{ /* Abnormal termination. Slot is available for re-use. However, checkhealth will report NOT alive status
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* until a new helper takes up this slot or forcefully cleared by a subsequent start -helpers command */
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helper_entry->helper_shutdown = ABNORMAL_SHUTDOWN;
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}
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helper_entry->helper_pid = 0; /* vacate my slot */
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if (!exit) /* terminating due to a signal */
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{
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assert(NULL != upd_helper_ctl);
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upd_helper_ctl->reap_helpers = HELPER_REAP_NOWAIT; /* let the receiver know it should reap my slot */
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}
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}
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#ifdef UNIX
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SHMDT(recvpool.recvpool_ctl);
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#elif defined(VMS)
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if(SS_NORMAL != (status = detach_shm(recvpool.shm_range)))
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repl_log(stderr, TRUE, TRUE, "Update helper could not detach from recvpool : %s\n", REPL_STR_ERROR);
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if (SS_NORMAL != (status = signoff_from_gsec(recvpool.shm_lockid)))
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repl_log(stderr, TRUE, TRUE, "Error dequeueing lock on recvpool global section : %s\n", REPL_STR_ERROR);
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#else
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#error Unsupported Platform
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#endif
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recvpool.recvpool_ctl = NULL;
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helper_entry = NULL;
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gtm_event_log_close();
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return;
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}
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static void updhelper_reader_stop(boolean_t exit)
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{
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call_on_signal = NULL; /* do not re-enter on error */
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updhelper_common_cleanup(exit);
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if (exit)
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mupip_exit(SS_NORMAL);
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return;
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}
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static void updhelper_writer_stop(boolean_t exit)
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{
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call_on_signal = NULL; /* do not re-enter on error */
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updhelper_common_cleanup(exit);
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if (exit)
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mupip_exit(SS_NORMAL);
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return;
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}
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void updhelper_reader_sigstop(void)
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{ /* reader termination due to a signal */
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updhelper_reader_stop(FALSE);
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return;
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}
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void updhelper_reader_end(void)
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{ /* reader shutdown */
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updhelper_reader_stop(TRUE);
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return;
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}
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void updhelper_writer_sigstop(void)
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{ /* writer termination due to a signal */
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updhelper_writer_stop(FALSE);
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return;
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}
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void updhelper_writer_end(void)
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{ /* writer shutdown */
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updhelper_writer_stop(TRUE);
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return;
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}
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