mirror of
https://github.com/FirebirdSQL/firebird.git
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74 lines
2.0 KiB
C++
74 lines
2.0 KiB
C++
/*
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* PROGRAM: Server Code
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* MODULE: rpb_chain.cpp
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* DESCRIPTION: Keeps track of rpb's, updated_in_place in
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* single transaction
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*
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* The contents of this file are subject to the Interbase Public
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* License Version 1.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy
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* of the License at http://www.Inprise.com/IPL.html
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*
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* Software distributed under the License is distributed on an
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* "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either express
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* or implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* Created by: Alex Peshkov <peshkoff@mail.ru>
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*
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* All Rights Reserved.
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* Contributor(s): ______________________________________.
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*/
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#include "firebird.h"
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#include "../jrd/common.h"
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#include "../jrd/rpb_chain.h"
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using namespace Jrd;
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#ifdef DEBUG_GDS_ALLOC
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#define ExecAssert(x) fb_assert(x)
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#else //DEBUG_GDS_ALLOC
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#define ExecAssert(x) x
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#endif //DEBUG_GDS_ALLOC
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// rpb_chain.h includes req.h => struct record_param.
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int traRpbList::PushRpb(record_param* value)
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{
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if (value->rpb_relation->rel_view_rse || // this is view
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value->rpb_relation->rel_file) // this is external file
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{
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return -1;
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}
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int pos = add(traRpbListElement(value, ~0));
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int level = -1;
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if (pos-- > 0) {
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traRpbListElement& prev = (*this)[pos];
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if (prev.lr_rpb->rpb_relation->rel_id == value->rpb_relation->rel_id &&
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prev.lr_rpb->rpb_number == value->rpb_number)
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{
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// we got the same record once more - mark for refetch
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level = prev.level;
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fb_assert(pos >= level);
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fb_assert((*this)[pos - level].level == 0);
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prev.lr_rpb->rpb_stream_flags |= RPB_s_refetch;
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}
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}
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(*this)[++pos].level = ++level;
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return level;
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}
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bool traRpbList::PopRpb(record_param* value, int Level)
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{
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if (Level < 0) {
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return false;
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}
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size_t pos;
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ExecAssert(find(traRpbListElement(value, Level), pos));
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const bool rc = (*this)[pos].lr_rpb->rpb_stream_flags & RPB_s_refetch;
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remove(pos);
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return rc;
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}
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