Packer.hpp
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上传日期:2022-05-23
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- /* Copyright (C) 2003 MySQL AB
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
- #ifndef PACKER_HPP
- #define PACKER_HPP
- #include <TransporterDefinitions.hpp>
- #include "TransporterInternalDefinitions.hpp"
- class Packer {
- Uint32 preComputedWord1;
- Uint32 checksumUsed; // Checksum shall be included in the message
- Uint32 signalIdUsed; // Senders signal id shall be included in the message
- public:
- Packer(bool signalId, bool checksum);
-
- Uint32 getMessageLength(const SignalHeader* header,
- const LinearSectionPtr ptr[3]) const ;
- Uint32 getMessageLength(const SignalHeader* header,
- const SegmentedSectionPtr ptr[3]) const ;
-
- void pack(Uint32 * insertPtr,
- Uint32 prio,
- const SignalHeader* header,
- const Uint32* data,
- const LinearSectionPtr ptr[3]) const ;
- void pack(Uint32 * insertPtr,
- Uint32 prio,
- const SignalHeader* header,
- const Uint32* data,
- class SectionSegmentPool & thePool,
- const SegmentedSectionPtr ptr[3]) const ;
- };
- inline
- Uint32
- Packer::getMessageLength(const SignalHeader* header,
- const LinearSectionPtr ptr[3]) const {
- Uint32 tLen32 = header->theLength;
- Uint32 no_seg = header->m_noOfSections;
- tLen32 += checksumUsed;
- tLen32 += signalIdUsed;
- tLen32 += no_seg;
- for(Uint32 i = 0; i<no_seg; i++){
- tLen32 += ptr[i].sz;
- }
-
- return (tLen32 * 4) + sizeof(Protocol6);
- }
- inline
- Uint32
- Packer::getMessageLength(const SignalHeader* header,
- const SegmentedSectionPtr ptr[3]) const {
- Uint32 tLen32 = header->theLength;
- Uint32 no_seg = header->m_noOfSections;
- tLen32 += checksumUsed;
- tLen32 += signalIdUsed;
- tLen32 += no_seg;
-
- for(Uint32 i = 0; i<no_seg; i++){
- tLen32 += ptr[i].sz;
- }
-
- return (tLen32 * 4) + sizeof(Protocol6);
- }
- #endif