76 lines
2.3 KiB
C
76 lines
2.3 KiB
C
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/****************************************************************
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* *
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* Copyright 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 "gdskill.h"
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#include "gdsblk.h"
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#include "gdsbt.h"
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#include "gtm_facility.h"
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#include "fileinfo.h"
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#include "gdsfhead.h"
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#include "gdscc.h"
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#include "filestruct.h"
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#include "jnl.h"
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#include "t_recycled2free.h"
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#include "min_max.h"
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#include "jnl_get_checksum.h"
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GBLREF cw_set_element cw_set[];
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GBLREF unsigned char cw_set_depth;
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GBLREF sgmnt_data_ptr_t cs_data;
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GBLREF sgmnt_addrs *cs_addrs;
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GBLREF unsigned int t_tries;
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boolean_t t_recycled2free(srch_blk_status *blkhist)
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{
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cw_set_element *cse;
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blk_hdr_ptr_t old_block;
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unsigned int bsiz;
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sgmnt_addrs *csa;
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jnl_buffer_ptr_t jbbp;
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DCL_THREADGBL_ACCESS;
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SETUP_THREADGBL_ACCESS;
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csa = cs_addrs;
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assert(cw_set_depth < CDB_CW_SET_SIZE);
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cse = &cw_set[cw_set_depth];
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cse->mode = gds_t_recycled2free;
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cse->blk = blkhist->blk_num;
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cse->old_block = blkhist->buffaddr;
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old_block = (blk_hdr_ptr_t)cse->old_block;
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/* t_recycled2free operates on RECYCLED blocks and hence cse->was_free is set to FALSE unconditionally */
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cse->was_free = FALSE;
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cse->cr = blkhist->cr;
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cse->cycle = blkhist->cycle;
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cse->blk_checksum = 0;
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assert(NULL != old_block);
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jbbp = (JNL_ENABLED(csa) && csa->jnl_before_image) ? csa->jnl->jnl_buff : NULL;
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if ((NULL != jbbp) && (old_block->tn < jbbp->epoch_tn))
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{ /* Pre-compute CHECKSUM */
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bsiz = old_block->bsiz;
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if (bsiz > cs_data->blk_size)
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{
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assert(CDB_STAGNATE > t_tries);
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return FALSE; /* restart */
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}
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JNL_GET_CHECKSUM_ACQUIRED_BLK(cse, cs_data, cs_addrs, cse->old_block, bsiz);
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}
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cse->upd_addr = NULL;
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cse->jnl_freeaddr = 0; /* reset jnl_freeaddr that previous transaction might have filled in */
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cse->done = FALSE;
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blkhist->cse = cse;
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cw_set_depth++;
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return TRUE;
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}
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