86 lines
2.9 KiB
C
86 lines
2.9 KiB
C
/****************************************************************
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* *
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* Copyright 2001, 2012 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 "gdsblk.h"
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#include "gdsfhead.h"
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#include "gdscc.h"
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#include "gdsbml.h"
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#include "send_msg.h" /* prototypes */
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#include "gvcst_map_build.h"
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#include "min_max.h"
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GBLREF gd_region *gv_cur_region;
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GBLREF sgmnt_addrs *cs_addrs;
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GBLREF boolean_t dse_running;
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GBLREF boolean_t mu_reorg_upgrd_dwngrd_in_prog;
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void gvcst_map_build(uint4 *array, sm_uc_ptr_t base_addr, cw_set_element *cs, trans_num ctn)
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{
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boolean_t status;
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uint4 (*bml_func)();
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uint4 bitnum, ret;
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#ifdef DEBUG
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int4 prev_bitnum, actual_cnt = 0;
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#endif
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DEBUG_ONLY(VALIDATE_BM_BLK(cs->blk, (blk_hdr_ptr_t)base_addr, cs_addrs, gv_cur_region, status);)
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assert(status); /* assert it is a valid bitmap block */
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((blk_hdr_ptr_t)base_addr)->tn = ctn;
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base_addr += SIZEOF(blk_hdr);
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assert(cs_addrs->now_crit); /* Don't want to be messing with highest_lbm_with_busy_blk outside crit */
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if (cs_addrs->nl->trunc_pid)
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{ /* A truncate is in progress. We need to 1) update cnl->highest_lbm_with_busy_blk if needed and 2) select bml_free if this is a
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* t_recycled2free transaction. */
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if (cs->reference_cnt > 0)
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{
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bml_func = bml_busy;
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cs_addrs->nl->highest_lbm_with_busy_blk = MAX(cs->blk, cs_addrs->nl->highest_lbm_with_busy_blk);
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} else if (cs->reference_cnt < 0)
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{
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if (cs_addrs->hdr->db_got_to_v5_once)
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bml_func = bml_recycled;
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else
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bml_func = bml_free;
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} else /* cs->reference_cnt == 0 */
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{
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if (cs_addrs->hdr->db_got_to_v5_once && mu_reorg_upgrd_dwngrd_in_prog)
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bml_func = bml_recycled;
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else
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bml_func = bml_free;
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}
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} else /* Choose bml_func as it was chosen before truncate feature. */
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bml_func = (cs->reference_cnt > 0) ? bml_busy : (cs_addrs->hdr->db_got_to_v5_once ? bml_recycled : bml_free);
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DEBUG_ONLY(prev_bitnum = -1;)
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while (bitnum = *array) /* caution : intended assignment */
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{
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assert((uint4)bitnum < cs_addrs->hdr->bplmap); /* check that bitnum is positive and within 0 to bplmap */
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assert((int4)bitnum > prev_bitnum); /* assert that blocks are sorted in the update array */
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ret = (* bml_func)(bitnum, base_addr);
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DEBUG_ONLY(
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if (cs->reference_cnt > 0)
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actual_cnt++; /* block is being marked busy */
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else if (!ret)
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actual_cnt--; /* block is transitioning from BUSY to either RECYCLED or FREE */
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/* all other state changes do not involve updates to the free_blocks count */
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)
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array++;
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DEBUG_ONLY(prev_bitnum = (int4)bitnum);
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}
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assert(actual_cnt == cs->reference_cnt);
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}
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