109 lines
4.5 KiB
C
109 lines
4.5 KiB
C
/****************************************************************
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* *
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* Copyright 2003, 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 "gtm_string.h"
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#include "gdsroot.h"
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#include "gdsblk.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 "gdscc.h"
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#include "gdskill.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 "hashtab.h"
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#include "tp.h"
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#include "tp_timeout.h"
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#include "gvcst_protos.h" /* for gvcst_tp_init prototype */
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/* Initialize the TP structures we will be using for the successive TP operations */
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void gvcst_tp_init(gd_region *greg)
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{
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sgm_info *si;
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sgmnt_addrs *csa;
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csa = (sgmnt_addrs *)&FILE_INFO(greg)->s_addrs;
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if (NULL == csa->sgm_info_ptr)
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{
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si = csa->sgm_info_ptr = (sgm_info *)malloc(SIZEOF(sgm_info));
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assert(32768 > SIZEOF(sgm_info));
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memset(si, 0, SIZEOF(sgm_info));
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si->tp_hist_size = TP_MAX_MM_TRANSIZE;
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si->cur_tp_hist_size = INIT_CUR_TP_HIST_SIZE; /* should be very much less than si->tp_hist_size */
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assert(si->cur_tp_hist_size <= si->tp_hist_size);
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si->blks_in_use = (hash_table_int4 *)malloc(SIZEOF(hash_table_int4));
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init_hashtab_int4(si->blks_in_use, BLKS_IN_USE_INIT_ELEMS, HASHTAB_COMPACT, HASHTAB_SPARE_TABLE);
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/* See comment in tp.h about cur_tp_hist_size for details */
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si->first_tp_hist = si->last_tp_hist =
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(srch_blk_status *)malloc(SIZEOF(srch_blk_status) * si->cur_tp_hist_size);
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si->cw_set_list = (buddy_list *)malloc(SIZEOF(buddy_list));
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initialize_list(si->cw_set_list, SIZEOF(cw_set_element), CW_SET_LIST_INIT_ALLOC);
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si->tlvl_cw_set_list = (buddy_list *)malloc(SIZEOF(buddy_list));
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initialize_list(si->tlvl_cw_set_list, SIZEOF(cw_set_element), TLVL_CW_SET_LIST_INIT_ALLOC);
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si->tlvl_info_list = (buddy_list *)malloc(SIZEOF(buddy_list));
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initialize_list(si->tlvl_info_list, SIZEOF(tlevel_info), TLVL_INFO_LIST_INIT_ALLOC);
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si->new_buff_list = (buddy_list *)malloc(SIZEOF(buddy_list));
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initialize_list(si->new_buff_list, SIZEOF(que_ent) + csa->hdr->blk_size, NEW_BUFF_LIST_INIT_ALLOC);
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si->recompute_list = (buddy_list *)malloc(SIZEOF(buddy_list));
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initialize_list(si->recompute_list, SIZEOF(key_cum_value), RECOMPUTE_LIST_INIT_ALLOC);
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/* The size of the si->cr_array can go up to TP_MAX_MM_TRANSIZE, but usually is quite less.
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* Therefore, initially allocate a small array and expand as needed later.
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*/
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if (dba_bg == greg->dyn.addr->acc_meth)
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{
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si->cr_array_size = si->cur_tp_hist_size;
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si->cr_array = (cache_rec_ptr_ptr_t)malloc(SIZEOF(cache_rec_ptr_t) * si->cr_array_size);
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} else
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{
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si->cr_array_size = 0;
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si->cr_array = NULL;
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}
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si->fresh_start = TRUE;
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} else
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si = csa->sgm_info_ptr;
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si->gv_cur_region = greg;
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si->tp_csa = csa;
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si->tp_csd = csa->hdr;
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si->start_tn = csa->ti->curr_tn;
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if (JNL_ALLOWED(csa))
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{
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si->total_jnl_rec_size = csa->min_total_tpjnl_rec_size; /* Reinitialize total_jnl_rec_size */
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/* Since the following jnl-mallocs are independent of any dynamically-changeable parameter of the
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* database, we can as well use the existing malloced jnl structures if at all they exist.
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*/
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if (NULL == si->jnl_tail)
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{
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si->jnl_tail = &si->jnl_head;
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si->jnl_list = (buddy_list *)malloc(SIZEOF(buddy_list));
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initialize_list(si->jnl_list, SIZEOF(jnl_format_buffer), JNL_LIST_INIT_ALLOC);
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si->format_buff_list = (buddy_list *)malloc(SIZEOF(buddy_list));
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/* Minimum value of elemSize is 8 due to alignment requirements of the returned memory location.
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* Therefore, we request an elemSize of 8 bytes for the format-buffer and will convert as much
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* bytes as we need into as many 8-byte multiple segments (see code in jnl_format).
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*/
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initialize_list(si->format_buff_list, JFB_ELE_SIZE,
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DIVIDE_ROUND_UP(JNL_FORMAT_BUFF_INIT_ALLOC, JFB_ELE_SIZE));
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}
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} else if (NULL != si->jnl_tail)
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{ /* journaling is currently disallowed although it was allowed (non-zero si->jnl_tail)
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* during the prior use of this region. Free up unnecessary region-specific structures now.
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*/
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FREEUP_BUDDY_LIST(si->jnl_list);
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FREEUP_BUDDY_LIST(si->format_buff_list);
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si->jnl_tail = NULL;
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}
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}
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