99 lines
2.8 KiB
C
99 lines
2.8 KiB
C
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/****************************************************************
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* *
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* Copyright 2001, 2010 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 "buddy_list.h" /* needed for tp.h */
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#include "hashtab_int4.h" /* needed for tp.h */
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#include "tp.h"
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#include "t_create.h"
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GBLREF cw_set_element cw_set[];
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GBLREF sgmnt_data_ptr_t cs_data;
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GBLREF unsigned char cw_set_depth;
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GBLREF sgm_info *sgm_info_ptr;
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GBLREF uint4 dollar_tlevel;
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GBLREF block_id tp_allocation_clue;
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GBLREF gv_namehead *gv_target;
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GBLREF trans_num local_tn; /* transaction number for THIS PROCESS */
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GBLREF block_id gtm_tp_allocation_clue; /* block# hint to start allocation for created blocks in TP */
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block_index t_create (
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block_id hint, /* A hint block number. */
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unsigned char *upd_addr, /* address of the block segment array which contains
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* update info for the block
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*/
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block_offset ins_off, /* offset to the position in the buffer that is to receive a block number
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* when one is created.
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*/
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block_index index, /* index into the create/write set. The specified entry is always a
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* created entry. When the create gets assigned a block number,
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* the block number is inserted into this buffer at the location
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* specified by ins_off.
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*/
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char level)
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{
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cw_set_element *cse;
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if (!dollar_tlevel)
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{
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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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} else
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{
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if (!tp_allocation_clue)
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{
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tp_allocation_clue = gtm_tp_allocation_clue + 1;
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hint = tp_allocation_clue;
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} else
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{
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hint = ++tp_allocation_clue;
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if (tp_allocation_clue < 0)
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GTMASSERT;
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}
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tp_cw_list(&cse);
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assert(gv_target);
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cse->blk_target = gv_target;
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}
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cse->mode = gds_t_create;
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cse->blk_checksum = 0;
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cse->blk = hint;
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cse->upd_addr = upd_addr;
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cse->ins_off = ins_off;
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cse->index = index;
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cse->reference_cnt = 0;
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cse->level = level;
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cse->first_copy = TRUE;
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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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cse->new_buff = 0;
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cse->write_type = GDS_WRITE_PLAIN;
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cse->t_level = dollar_tlevel;
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cse->low_tlevel = NULL;
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cse->high_tlevel = NULL;
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cse->ondsk_blkver = GDSVCURR;
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if (!dollar_tlevel)
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return(cw_set_depth++);
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else
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return(sgm_info_ptr->cw_set_depth++);
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}
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