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/****************************************************************
* *
* Copyright (c) 2012-2023 Fidelity National Information *
* Services, Inc. and/or its subsidiaries. All rights reserved. *
* *
* This source code contains the intellectual property *
* of its copyright holder(s), and is made available *
* under a license. If you do not know the terms of *
* the license, please stop and do not read further. *
* *
****************************************************************/
#include "mdef.h"
#include "gdsroot.h"
#include "gdskill.h"
#include "gdsblk.h"
#include "gdsbt.h"
#include "gtm_facility.h"
#include "fileinfo.h"
#include "gdsfhead.h"
#include "gdscc.h"
#include "filestruct.h"
#include "jnl.h"
#include "t_recycled2free.h"
#include "min_max.h"
#include "jnl_get_checksum.h"
GBLREF cw_set_element cw_set[];
GBLREF unsigned char cw_set_depth;
GBLREF sgmnt_data_ptr_t cs_data;
GBLREF sgmnt_addrs *cs_addrs;
GBLREF unsigned int t_tries;
boolean_t t_recycled2free(srch_blk_status *blkhist)
{
cw_set_element *cse;
blk_hdr_ptr_t old_block;
unsigned int bsiz;
sgmnt_addrs *csa;
jnl_buffer_ptr_t jbbp;
DCL_THREADGBL_ACCESS;
SETUP_THREADGBL_ACCESS;
csa = cs_addrs;
assert(cw_set_depth < CDB_CW_SET_SIZE);
assert(dba_bg == csa->hdr->acc_meth);
cse = &cw_set[cw_set_depth];
cse->mode = gds_t_recycled2free;
cse->blk = blkhist->blk_num;
cse->old_block = blkhist->buffaddr;
old_block = (blk_hdr_ptr_t)cse->old_block;
/* t_recycled2free operates on RECYCLED blocks and hence cse->blk_prior_state's free_status is set to FALSE */
BIT_CLEAR_FREE(cse->blk_prior_state);
BIT_SET_RECYCLED(cse->blk_prior_state); /* set recycled bit as this is relied upon to write to snapshot file */
cse->level = old_block->levl; /* maintain level information so only level>0 will be written to snapshot file */
cse->cr = blkhist->cr;
cse->cycle = blkhist->cycle;
cse->blk_checksum = 0;
assert(NULL != old_block);
jbbp = (JNL_ENABLED(csa) && csa->jnl_before_image) ? csa->jnl->jnl_buff : NULL;
if ((NULL != jbbp) && (old_block->tn < jbbp->epoch_tn))
{ /* Pre-compute CHECKSUM */
bsiz = old_block->bsiz;
if (bsiz > cs_data->blk_size)
{
assert(CDB_STAGNATE > t_tries);
return FALSE; /* restart */
}
JNL_GET_CHECKSUM_ACQUIRED_BLK(cse, cs_data, cs_addrs, cse->old_block, bsiz);
}
cse->upd_addr.ptr = NULL;
cse->jnl_freeaddr = 0; /* reset jnl_freeaddr that previous transaction might have filled in */
cse->done = FALSE;
cse->new_buff = NULL;
blkhist->cse = cse;
cw_set_depth++;
return TRUE;
}
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