69 lines
1.7 KiB
C
69 lines
1.7 KiB
C
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/****************************************************************
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* *
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* Copyright 2001, 2009 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 "gdsroot.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 "mlkdef.h"
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#include "mlk_prcblk_add.h"
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#include "mlk_shrclean.h"
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void mlk_prcblk_add(gd_region *reg,
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mlk_ctldata_ptr_t ctl,
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mlk_shrblk_ptr_t d,
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uint4 pid)
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{
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mlk_prcblk_ptr_t pr;
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ptroff_t *prpt;
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int lcnt;
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error_def(ERR_LOCKSPACEFULL);
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for (prpt = (ptroff_t *)&d->pending, lcnt = FILE_INFO(reg)->s_addrs.hdr->lock_space_size / PRC_FACTOR;
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*prpt && lcnt; prpt = (ptroff_t *) &pr->next, lcnt--)
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{
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pr = (mlk_prcblk_ptr_t)R2A(*prpt);
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if (pr->process_id == pid)
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{
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pr->ref_cnt++;
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return;
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}
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}
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if (!lcnt)
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{
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send_msg(VARLSTCNT(4) ERR_LOCKSPACEFULL, 2, REG_LEN_STR(reg));
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rts_error(VARLSTCNT(4) ERR_LOCKSPACEFULL, 2, REG_LEN_STR(reg));
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}
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if (ctl->prccnt < 1)
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{
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mlk_shrclean(reg, ctl, (mlk_shrblk_ptr_t)R2A(ctl->blkroot));
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if (ctl->prccnt < 1)
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return;
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}
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ctl->prccnt--;
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pr = (mlk_prcblk_ptr_t)R2A(ctl->prcfree);
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if (0 == pr->next)
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{
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assert(0 == ctl->prccnt);
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ctl->prcfree = 0;
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} else
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A2R(ctl->prcfree, R2A(pr->next));
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A2R(*prpt, pr);
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pr->process_id = pid;
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pr->ref_cnt = 1;
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pr->next = pr->unlock = 0;
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return;
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}
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