138 lines
3.3 KiB
C
138 lines
3.3 KiB
C
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/****************************************************************
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* *
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* Copyright 2005, 2007 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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#include "gtm_stat.h"
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#include "gtm_stdlib.h"
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#include "gtm_fcntl.h"
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#include "gtm_time.h"
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#include "gtm_unistd.h"
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#include "gtm_stdio.h"
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#include "gtm_inet.h"
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#include <sys/mman.h>
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#include <errno.h>
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#ifdef VMS
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#include <descrip.h> /* Required for gtmsource.h */
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#endif
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#include "cdb_sc.h"
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#include "gtm_string.h"
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#include "gdsroot.h"
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#include "gdskill.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 "gdsblk.h"
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#include "gdsfhead.h"
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#include "gdscc.h"
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#include "copy.h"
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#include "filestruct.h"
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#include "jnl.h"
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#include "iosp.h"
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#include "gtmrecv.h"
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#include "cli.h"
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#include "error.h"
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#include "repl_dbg.h"
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#include "repl_msg.h"
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#include "gtmsource.h"
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#include "repl_shutdcode.h"
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#include "repl_sp.h"
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#include "jnl_write.h"
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#ifdef UNIX
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#include "gtmio.h"
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#endif
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#ifdef VMS
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#include <ssdef.h>
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#include <fab.h>
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#include <rms.h>
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#include <iodef.h>
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#include <secdef.h>
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#include <psldef.h>
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#include <lckdef.h>
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#include <syidef.h>
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#include <xab.h>
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#include <prtdef.h>
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#endif
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#include "ast.h"
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#include "util.h"
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#include "op.h"
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#include "targ_alloc.h"
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#include "dpgbldir.h"
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#include "read_db_files_from_gld.h"
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#include "updproc.h"
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#include "tp_change_reg.h"
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#include "repl_log.h"
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#include "gtmmsg.h" /* for gtm_putmsg() prototype */
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#include "memcoherency.h"
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#include "change_reg.h"
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#define UPDHELPER_SLEEP 30
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#define THRESHOLD_FOR_PAUSE 10
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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 uint4 process_id;
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GBLREF int updhelper_log_fd;
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GBLREF FILE *updhelper_log_fp;
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GBLREF gd_addr *gd_header;
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GBLREF gd_region *gv_cur_region;
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GBLREF sgmnt_addrs *cs_addrs;
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GBLREF sgmnt_data_ptr_t cs_data;
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int updhelper_writer(void)
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{
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uint4 pre_read_offset;
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int lcnt;
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int4 dummy_errno;
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gd_region *reg, *r_top;
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sgmnt_addrs *csa;
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sgmnt_data_ptr_t csd;
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node_local_ptr_t cnl;
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boolean_t flushed;
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call_on_signal = updhelper_writer_sigstop;
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updhelper_init(UPD_HELPER_WRITER);
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repl_log(updhelper_log_fp, TRUE, TRUE, "Helper writer started. PID %d [0x%X]\n", process_id, process_id);
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for (lcnt = 0; (NO_SHUTDOWN == helper_entry->helper_shutdown); )
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{
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flushed = FALSE;
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for (reg = gd_header->regions, r_top = reg + gd_header->n_regions; reg < r_top; reg++)
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{
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assert(reg->open); /* we called region_init() in the initialization code */
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csa = &FILE_INFO(reg)->s_addrs;
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cnl = csa->nl;
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csd = csa->hdr;
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if (reg->open && !reg->read_only &&
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(cnl->wcs_active_lvl >= csd->flush_trigger * csd->writer_trigger_factor / 100.0))
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{
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TP_CHANGE_REG(reg); /* for jnl_ensure_open() */
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JNL_ENSURE_OPEN_WCS_WTSTART(csa, reg, 0, dummy_errno);
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flushed = TRUE;
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}
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}
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if (!flushed)
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{
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if (lcnt++ >= THRESHOLD_FOR_PAUSE)
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{
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SHORT_SLEEP(UPDHELPER_SLEEP);
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lcnt = 0;
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}
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} else
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lcnt = 0;
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}
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updhelper_writer_end();
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return SS_NORMAL;
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}
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