127 lines
3.5 KiB
C
127 lines
3.5 KiB
C
/****************************************************************
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* *
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* Copyright 2001, 2011 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 "cdb_sc.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 "copy.h"
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#include "filestruct.h" /* needed for jnl.h */
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#include "gdscc.h" /* needed for tp.h */
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#include "jnl.h" /* needed for tp.h */
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#include "gdskill.h" /* needed for tp.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" /* needed for T_BEGIN_READ_NONTP_OR_TP macro */
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#include "t_end.h" /* prototypes */
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#include "t_retry.h"
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#include "t_begin.h"
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#include "gvcst_protos.h" /* for gvcst_rtsib,gvcst_search,gvcst_search_blk,gvcst_data prototype */
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GBLREF gv_key *gv_currkey;
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GBLREF gv_namehead *gv_target;
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GBLREF sgmnt_addrs *cs_addrs;
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GBLREF gd_region *gv_cur_region;
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GBLREF uint4 dollar_tlevel;
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GBLREF unsigned int t_tries;
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error_def(ERR_GVDATAFAIL);
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mint gvcst_data(void)
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{
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blk_hdr_ptr_t bp;
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boolean_t do_rtsib;
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enum cdb_sc status;
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mint val;
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rec_hdr_ptr_t rp;
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unsigned short match, rsiz;
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srch_blk_status *bh;
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srch_hist *rt_history;
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sm_uc_ptr_t b_top;
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assert((gv_target->root < cs_addrs->ti->total_blks) || dollar_tlevel);
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T_BEGIN_READ_NONTP_OR_TP(ERR_GVDATAFAIL);
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assert(t_tries < CDB_STAGNATE || cs_addrs->now_crit); /* we better hold crit in the final retry (TP & non-TP) */
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for (;;)
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{
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/* The following code is duplicated in gvcst_dataget. Any changes here might need to be reflected there as well */
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rt_history = gv_target->alt_hist;
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rt_history->h[0].blk_num = 0;
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if (cdb_sc_normal != (status = gvcst_search(gv_currkey, NULL)))
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{
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t_retry(status);
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continue;
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}
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bh = gv_target->hist.h;
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bp = (blk_hdr_ptr_t)bh->buffaddr;
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rp = (rec_hdr_ptr_t)(bh->buffaddr + bh->curr_rec.offset);
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b_top = bh->buffaddr + bp->bsiz;
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match = bh->curr_rec.match;
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do_rtsib = FALSE;
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if (gv_currkey->end + 1 == match)
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{
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val = 1;
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GET_USHORT(rsiz, &rp->rsiz);
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rp = (rec_hdr_ptr_t)((sm_uc_ptr_t)rp + rsiz);
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if ((sm_uc_ptr_t)rp > b_top)
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{
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t_retry(cdb_sc_rmisalign);
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continue;
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} else if ((sm_uc_ptr_t)rp == b_top)
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do_rtsib = TRUE;
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else if (rp->cmpc >= gv_currkey->end)
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val += 10;
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} else if (match >= gv_currkey->end)
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val = 10;
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else
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{
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val = 0;
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if (rp == (rec_hdr_ptr_t)b_top)
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do_rtsib = TRUE;
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}
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if (do_rtsib && (cdb_sc_endtree != (status = gvcst_rtsib(rt_history, 0))))
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{
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if ((cdb_sc_normal != status) || (cdb_sc_normal != (status = gvcst_search_blk(gv_currkey, rt_history->h))))
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{
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t_retry(status);
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continue;
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}
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if (rt_history->h[0].curr_rec.match >= gv_currkey->end)
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{
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assert(1 >= val);
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val += 10;
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}
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}
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if (!dollar_tlevel)
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{
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if ((trans_num)0 == t_end(&gv_target->hist, 0 == rt_history->h[0].blk_num ? NULL : rt_history,
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TN_NOT_SPECIFIED))
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continue;
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} else
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{
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status = tp_hist(0 == rt_history->h[0].blk_num ? NULL : rt_history);
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if (cdb_sc_normal != status)
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{
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t_retry(status);
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continue;
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}
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}
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INCR_GVSTATS_COUNTER(cs_addrs, cs_addrs->nl, n_data, 1);
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return val;
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}
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}
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