107 lines
3.8 KiB
C
107 lines
3.8 KiB
C
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/****************************************************************
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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 "gtm_string.h"
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#include "gdsroot.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 "stringpool.h"
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#include "op.h"
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#include "gdskill.h" /* needed for tp.h */
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#include "gdscc.h" /* needed for tp.h */
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#include "filestruct.h" /* needed for tp.h */
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#include "jnl.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"
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#include "process_gvt_pending_list.h"
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GBLREF gd_binding *gd_map;
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GBLREF gd_region *gv_cur_region;
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GBLREF gv_key *gv_currkey;
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GBLREF gv_namehead *gv_target;
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GBLREF spdesc stringpool;
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GBLREF uint4 dollar_tlevel;
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GBLREF sgm_info *first_sgm_info, *sgm_info_ptr;
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void op_gvsavtarg(mval *v)
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{
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int len, align_len;
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unsigned char *c;
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DEBUG_ONLY(
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unsigned char *tmpc;
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)
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short end;
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gvsavtarg_t *gvsavtarg;
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DCL_THREADGBL_ACCESS;
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SETUP_THREADGBL_ACCESS;
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DBG_CHECK_GVTARGET_GVCURRKEY_IN_SYNC;
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DBG_CHECK_GVTARGET_CSADDRS_IN_SYNC;
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v->mvtype = 0; /* so stp_gcol (if invoked below) can free up space currently occupied by this to-be-overwritten mval */
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if (NULL == gv_currkey)
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{ /* Simplest case, finish it off */
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v->str.len = 0;
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v->mvtype = MV_STR;
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return;
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}
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assert(NULL != TREF(gd_targ_addr));
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assert((NULL != gv_target) || (0 == gv_currkey->end));
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/* The way savtarg/rectarg works is by saving and restoring a copy of "gv_target". This assumes that once gv_target
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* has been allocated and used in a savtarg, the memory is never freed at least until the rectarg is completed.
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* gvtargets in the pending list could be freed and reallocated so such gvtargets should never be the current
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* "gv_target" global in case we are in savtarg (or else at rectarg time the saved gv_target could have been freed).
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* Assert accordingly.
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*/
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assert((NULL == gv_target) || !is_gvt_in_pending_list(gv_target));
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end = gv_currkey->end;
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len = (int)(end + GVSAVTARG_FIXED_SIZE);
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align_len = len + (GVSAVTARG_ALIGN_BNDRY - 1); /* is for 8-byte alignment of v->str.addr */
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ENSURE_STP_FREE_SPACE(align_len);
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v->str.len = len;
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c = (unsigned char *)(ROUND_UP2((UINTPTR_T)stringpool.free, GVSAVTARG_ALIGN_BNDRY));
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assert((c + len) <= (stringpool.free + align_len));
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v->str.addr = (char *)c;
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v->mvtype = MV_STR; /* initialize mvtype now that mval has been otherwise completely set up */
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stringpool.free += align_len;
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gvsavtarg = (gvsavtarg_t *)c;
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/* Now we are going to fill in the structure fields most of which are pointer fields (size upto 8-byte).
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* This is why we ensure 8-byte alignment of c before typecasting it into gvsavtarg.
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*/
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DEBUG_ONLY(
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assert(!dollar_tlevel || (NULL != first_sgm_info) || (NULL == sgm_info_ptr));
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if (dollar_tlevel && (NULL != sgm_info_ptr))
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DBG_CHECK_IN_FIRST_SGM_INFO_LIST(sgm_info_ptr);
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)
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gvsavtarg->gd_targ_addr = TREF(gd_targ_addr);
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gvsavtarg->gd_map = gd_map;
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gvsavtarg->gv_cur_region = gv_cur_region;
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gvsavtarg->gv_target = gv_target;
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gvsavtarg->gv_last_subsc_null = TREF(gv_last_subsc_null);
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gvsavtarg->gv_some_subsc_null = TREF(gv_some_subsc_null);
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gvsavtarg->prev = gv_currkey->prev;
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gvsavtarg->end = end;
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c += GVSAVTARG_FIXED_SIZE;
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if (0 < end)
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{
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assert(KEY_DELIMITER != gv_currkey->base[0]);
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assert(KEY_DELIMITER == gv_currkey->base[end - 1]);
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assert(KEY_DELIMITER == gv_currkey->base[end]);
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memcpy(c, gv_currkey->base, end);
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}
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return;
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}
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