94 lines
2.4 KiB
C
94 lines
2.4 KiB
C
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/****************************************************************
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* *
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* Copyright 2005, 2008 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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/* Process deferred stale timer interrupts.
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Flushing of queues is deferred if the process is in crit. When a transaction
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is complete, we will come here to process the deferred interrupt.
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*/
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#include "mdef.h"
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#include <sys/mman.h>
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#ifdef VMS
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# include <ssdef.h>
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# include "ast.h"
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#endif
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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 "filestruct.h"
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#include "gdsbgtr.h"
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#include "tp_change_reg.h"
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#include "dpgbldir.h"
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#include "process_deferred_stale.h"
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GBLREF boolean_t unhandled_stale_timer_pop;
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GBLREF gd_region *gv_cur_region;
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void process_deferred_stale(void)
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{
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gd_region *r_cur, *r_top, *save_gv_cur_region;
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gd_addr *addr_ptr;
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sgmnt_addrs *csa;
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int4 status;
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assert(unhandled_stale_timer_pop);
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save_gv_cur_region = gv_cur_region;
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for (addr_ptr = get_next_gdr(NULL); NULL != addr_ptr; addr_ptr = get_next_gdr(addr_ptr))
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{
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for (r_cur = addr_ptr->regions, r_top = r_cur + addr_ptr->n_regions; r_cur < r_top; r_cur++)
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{
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if (r_cur->open)
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{
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csa = &FILE_INFO(r_cur)->s_addrs;
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assert(!T_IN_CRIT_OR_COMMIT_OR_WRITE(csa));
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if (csa->stale_defer)
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{
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gv_cur_region = r_cur;
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tp_change_reg();
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#if defined(UNIX) && defined(UNTARGETED_MSYNC)
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if (csa->ti->last_mm_sync != csa->ti->curr_tn)
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{
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boolean_t was_crit;
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was_crit = csa->now_crit;
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if (FALSE == was_crit)
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grab_crit(r_cur);
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msync((caddr_t)csa->db_addrs[0],
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(size_t)(csa->db_addrs[1] - csa->db_addrs[0]),
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MS_SYNC);
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/* Save when did last full sync */
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csa->ti->last_mm_sync = csa->ti->curr_tn;
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if (FALSE == was_crit)
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rel_crit(r_cur);
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}
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#else
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DCLAST_WCS_WTSTART(r_cur, 0, status);
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#endif
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csa->stale_defer = FALSE;
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BG_TRACE_ANY(csa, stale_defer_processed);
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}
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}
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}
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}
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unhandled_stale_timer_pop = FALSE;
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gv_cur_region = save_gv_cur_region;
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tp_change_reg();
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}
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