Packer.cpp
上传用户:romrleung
上传日期:2022-05-23
资源大小:18897k
文件大小:14k
- /* 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 */
- #include <ndb_global.h>
- #include "Packer.hpp"
- #include <TransporterRegistry.hpp>
- #include <TransporterCallback.hpp>
- #include <RefConvert.hpp>
- #define MAX_RECEIVED_SIGNALS 1024
- Uint32
- TransporterRegistry::unpack(Uint32 * readPtr,
- Uint32 sizeOfData,
- NodeId remoteNodeId,
- IOState state) {
- SignalHeader signalHeader;
- LinearSectionPtr ptr[3];
-
- Uint32 usedData = 0;
- Uint32 loop_count = 0;
-
- if(state == NoHalt || state == HaltOutput){
- while ((sizeOfData >= 4 + sizeof(Protocol6)) &&
- (loop_count < MAX_RECEIVED_SIGNALS)) {
- Uint32 word1 = readPtr[0];
- Uint32 word2 = readPtr[1];
- Uint32 word3 = readPtr[2];
- loop_count++;
-
- #if 0
- if(Protocol6::getByteOrder(word1) != MY_OWN_BYTE_ORDER){
- //Do funky stuff
- }
- #endif
- const Uint16 messageLen32 = Protocol6::getMessageLength(word1);
- const Uint32 messageLenBytes = ((Uint32)messageLen32) << 2;
- if(messageLen32 == 0 || messageLen32 > MAX_MESSAGE_SIZE){
- DEBUG("Message Size = " << messageLenBytes);
- reportError(callbackObj, remoteNodeId, TE_INVALID_MESSAGE_LENGTH);
- return usedData;
- }//if
-
- if (sizeOfData < messageLenBytes) {
- break;
- }//if
-
- if(Protocol6::getCheckSumIncluded(word1)){
- const Uint32 tmpLen = messageLen32 - 1;
- const Uint32 checkSumSent = readPtr[tmpLen];
- const Uint32 checkSumComputed = computeChecksum(&readPtr[0], tmpLen);
-
- if(checkSumComputed != checkSumSent){
- reportError(callbackObj, remoteNodeId, TE_INVALID_CHECKSUM);
- return usedData;
- }//if
- }//if
-
- #if 0
- if(Protocol6::getCompressed(word1)){
- //Do funky stuff
- }//if
- #endif
-
- Protocol6::createSignalHeader(&signalHeader, word1, word2, word3);
-
- Uint32 sBlockNum = signalHeader.theSendersBlockRef;
- sBlockNum = numberToRef(sBlockNum, remoteNodeId);
- signalHeader.theSendersBlockRef = sBlockNum;
-
- Uint8 prio = Protocol6::getPrio(word1);
-
- Uint32 * signalData = &readPtr[3];
-
- if(Protocol6::getSignalIdIncluded(word1) == 0){
- signalHeader.theSendersSignalId = ~0;
- } else {
- signalHeader.theSendersSignalId = * signalData;
- signalData ++;
- }//if
-
- Uint32 * sectionPtr = signalData + signalHeader.theLength;
- Uint32 * sectionData = sectionPtr + signalHeader.m_noOfSections;
- for(Uint32 i = 0; i<signalHeader.m_noOfSections; i++){
- Uint32 sz = * sectionPtr;
- ptr[i].sz = sz;
- ptr[i].p = sectionData;
-
- sectionPtr ++;
- sectionData += sz;
- }
- execute(callbackObj, &signalHeader, prio, signalData, ptr);
-
- readPtr += messageLen32;
- sizeOfData -= messageLenBytes;
- usedData += messageLenBytes;
- }//while
-
- return usedData;
- } else {
- /** state = HaltIO || state == HaltInput */
- while ((sizeOfData >= 4 + sizeof(Protocol6)) &&
- (loop_count < MAX_RECEIVED_SIGNALS)) {
- Uint32 word1 = readPtr[0];
- Uint32 word2 = readPtr[1];
- Uint32 word3 = readPtr[2];
- loop_count++;
-
- #if 0
- if(Protocol6::getByteOrder(word1) != MY_OWN_BYTE_ORDER){
- //Do funky stuff
- }//if
- #endif
-
- const Uint16 messageLen32 = Protocol6::getMessageLength(word1);
- const Uint32 messageLenBytes = ((Uint32)messageLen32) << 2;
- if(messageLen32 == 0 || messageLen32 > MAX_MESSAGE_SIZE){
- DEBUG("Message Size = " << messageLenBytes);
- reportError(callbackObj, remoteNodeId, TE_INVALID_MESSAGE_LENGTH);
- return usedData;
- }//if
-
- if (sizeOfData < messageLenBytes) {
- break;
- }//if
-
- if(Protocol6::getCheckSumIncluded(word1)){
- const Uint32 tmpLen = messageLen32 - 1;
- const Uint32 checkSumSent = readPtr[tmpLen];
- const Uint32 checkSumComputed = computeChecksum(&readPtr[0], tmpLen);
-
- if(checkSumComputed != checkSumSent){
-
- //theTransporters[remoteNodeId]->disconnect();
- reportError(callbackObj, remoteNodeId, TE_INVALID_CHECKSUM);
- return usedData;
- }//if
- }//if
-
- #if 0
- if(Protocol6::getCompressed(word1)){
- //Do funky stuff
- }//if
- #endif
-
- Protocol6::createSignalHeader(&signalHeader, word1, word2, word3);
-
- Uint32 rBlockNum = signalHeader.theReceiversBlockNumber;
- if(rBlockNum == 252){
- Uint32 sBlockNum = signalHeader.theSendersBlockRef;
- sBlockNum = numberToRef(sBlockNum, remoteNodeId);
- signalHeader.theSendersBlockRef = sBlockNum;
-
- Uint8 prio = Protocol6::getPrio(word1);
-
- Uint32 * signalData = &readPtr[3];
-
- if(Protocol6::getSignalIdIncluded(word1) == 0){
- signalHeader.theSendersSignalId = ~0;
- } else {
- signalHeader.theSendersSignalId = * signalData;
- signalData ++;
- }//if
-
- Uint32 * sectionPtr = signalData + signalHeader.theLength;
- Uint32 * sectionData = sectionPtr + signalHeader.m_noOfSections;
- for(Uint32 i = 0; i<signalHeader.m_noOfSections; i++){
- Uint32 sz = * sectionPtr;
- ptr[i].sz = sz;
- ptr[i].p = sectionData;
-
- sectionPtr ++;
- sectionData += sz;
- }
- execute(callbackObj, &signalHeader, prio, signalData, ptr);
- } else {
- DEBUG("prepareReceive(...) - Discarding message to block: "
- << rBlockNum << " from Node: " << remoteNodeId);
- }//if
-
- readPtr += messageLen32;
- sizeOfData -= messageLenBytes;
- usedData += messageLenBytes;
- }//while
-
- return usedData;
- }//if
- }
- Uint32 *
- TransporterRegistry::unpack(Uint32 * readPtr,
- Uint32 * eodPtr,
- NodeId remoteNodeId,
- IOState state) {
- static SignalHeader signalHeader;
- static LinearSectionPtr ptr[3];
- Uint32 loop_count = 0;
- if(state == NoHalt || state == HaltOutput){
- while ((readPtr < eodPtr) && (loop_count < MAX_RECEIVED_SIGNALS)) {
- Uint32 word1 = readPtr[0];
- Uint32 word2 = readPtr[1];
- Uint32 word3 = readPtr[2];
- loop_count++;
- #if 0
- if(Protocol6::getByteOrder(word1) != MY_OWN_BYTE_ORDER){
- //Do funky stuff
- }
- #endif
-
- const Uint16 messageLen32 = Protocol6::getMessageLength(word1);
-
- if(messageLen32 == 0 || messageLen32 > MAX_MESSAGE_SIZE){
- DEBUG("Message Size(words) = " << messageLen32);
- reportError(callbackObj, remoteNodeId, TE_INVALID_MESSAGE_LENGTH);
- return readPtr;
- }//if
-
- if(Protocol6::getCheckSumIncluded(word1)){
- const Uint32 tmpLen = messageLen32 - 1;
- const Uint32 checkSumSent = readPtr[tmpLen];
- const Uint32 checkSumComputed = computeChecksum(&readPtr[0], tmpLen);
-
- if(checkSumComputed != checkSumSent){
- reportError(callbackObj, remoteNodeId, TE_INVALID_CHECKSUM);
- return readPtr;
- }//if
- }//if
-
- #if 0
- if(Protocol6::getCompressed(word1)){
- //Do funky stuff
- }//if
- #endif
-
- Protocol6::createSignalHeader(&signalHeader, word1, word2, word3);
-
- Uint32 sBlockNum = signalHeader.theSendersBlockRef;
- sBlockNum = numberToRef(sBlockNum, remoteNodeId);
- signalHeader.theSendersBlockRef = sBlockNum;
-
- Uint8 prio = Protocol6::getPrio(word1);
-
- Uint32 * signalData = &readPtr[3];
-
- if(Protocol6::getSignalIdIncluded(word1) == 0){
- signalHeader.theSendersSignalId = ~0;
- } else {
- signalHeader.theSendersSignalId = * signalData;
- signalData ++;
- }//if
- Uint32 * sectionPtr = signalData + signalHeader.theLength;
- Uint32 * sectionData = sectionPtr + signalHeader.m_noOfSections;
- for(Uint32 i = 0; i<signalHeader.m_noOfSections; i++){
- Uint32 sz = * sectionPtr;
- ptr[i].sz = sz;
- ptr[i].p = sectionData;
-
- sectionPtr ++;
- sectionData += sz;
- }
-
- execute(callbackObj, &signalHeader, prio, signalData, ptr);
-
- readPtr += messageLen32;
- }//while
- } else {
- /** state = HaltIO || state == HaltInput */
- while ((readPtr < eodPtr) && (loop_count < MAX_RECEIVED_SIGNALS)) {
- Uint32 word1 = readPtr[0];
- Uint32 word2 = readPtr[1];
- Uint32 word3 = readPtr[2];
- loop_count++;
- #if 0
- if(Protocol6::getByteOrder(word1) != MY_OWN_BYTE_ORDER){
- //Do funky stuff
- }//if
- #endif
-
- const Uint16 messageLen32 = Protocol6::getMessageLength(word1);
- if(messageLen32 == 0 || messageLen32 > MAX_MESSAGE_SIZE){
- DEBUG("Message Size(words) = " << messageLen32);
- reportError(callbackObj, remoteNodeId, TE_INVALID_MESSAGE_LENGTH);
- return readPtr;
- }//if
-
- if(Protocol6::getCheckSumIncluded(word1)){
- const Uint32 tmpLen = messageLen32 - 1;
- const Uint32 checkSumSent = readPtr[tmpLen];
- const Uint32 checkSumComputed = computeChecksum(&readPtr[0], tmpLen);
-
- if(checkSumComputed != checkSumSent){
-
- //theTransporters[remoteNodeId]->disconnect();
- reportError(callbackObj, remoteNodeId, TE_INVALID_CHECKSUM);
- return readPtr;
- }//if
- }//if
-
- #if 0
- if(Protocol6::getCompressed(word1)){
- //Do funky stuff
- }//if
- #endif
-
- Protocol6::createSignalHeader(&signalHeader, word1, word2, word3);
-
- Uint32 rBlockNum = signalHeader.theReceiversBlockNumber;
-
- if(rBlockNum == 252){
- Uint32 sBlockNum = signalHeader.theSendersBlockRef;
- sBlockNum = numberToRef(sBlockNum, remoteNodeId);
- signalHeader.theSendersBlockRef = sBlockNum;
-
- Uint8 prio = Protocol6::getPrio(word1);
-
- Uint32 * signalData = &readPtr[3];
-
- if(Protocol6::getSignalIdIncluded(word1) == 0){
- signalHeader.theSendersSignalId = ~0;
- } else {
- signalHeader.theSendersSignalId = * signalData;
- signalData ++;
- }//if
-
- Uint32 * sectionPtr = signalData + signalHeader.theLength;
- Uint32 * sectionData = sectionPtr + signalHeader.m_noOfSections;
- for(Uint32 i = 0; i<signalHeader.m_noOfSections; i++){
- Uint32 sz = * sectionPtr;
- ptr[i].sz = sz;
- ptr[i].p = sectionData;
-
- sectionPtr ++;
- sectionData += sz;
- }
- execute(callbackObj, &signalHeader, prio, signalData, ptr);
- } else {
- DEBUG("prepareReceive(...) - Discarding message to block: "
- << rBlockNum << " from Node: " << remoteNodeId);
- }//if
-
- readPtr += messageLen32;
- }//while
- }//if
- return readPtr;
- }
- Packer::Packer(bool signalId, bool checksum) {
-
- checksumUsed = (checksum ? 1 : 0);
- signalIdUsed = (signalId ? 1 : 0);
-
- // Set the priority
- preComputedWord1 = 0;
- Protocol6::setByteOrder(preComputedWord1, 0);
- Protocol6::setSignalIdIncluded(preComputedWord1, signalIdUsed);
- Protocol6::setCheckSumIncluded(preComputedWord1, checksumUsed);
- Protocol6::setCompressed(preComputedWord1, 0);
- }
- inline
- void
- import(Uint32 * & insertPtr, const LinearSectionPtr & ptr){
- const Uint32 sz = ptr.sz;
- memcpy(insertPtr, ptr.p, 4 * sz);
- insertPtr += sz;
- }
- void copy(Uint32 * & insertPtr,
- class SectionSegmentPool &, const SegmentedSectionPtr & ptr);
- void
- Packer::pack(Uint32 * insertPtr,
- Uint32 prio,
- const SignalHeader * header,
- const Uint32 * theData,
- const LinearSectionPtr ptr[3]) const {
- Uint32 i;
-
- Uint32 dataLen32 = header->theLength;
- Uint32 no_segs = header->m_noOfSections;
- Uint32 len32 =
- dataLen32 + no_segs +
- checksumUsed + signalIdUsed + (sizeof(Protocol6)/4);
-
- for(i = 0; i<no_segs; i++){
- len32 += ptr[i].sz;
- }
-
- /**
- * Do insert of data
- */
- Uint32 word1 = preComputedWord1;
- Uint32 word2 = 0;
- Uint32 word3 = 0;
-
- Protocol6::setPrio(word1, prio);
- Protocol6::setMessageLength(word1, len32);
- Protocol6::createProtocol6Header(word1, word2, word3, header);
- insertPtr[0] = word1;
- insertPtr[1] = word2;
- insertPtr[2] = word3;
-
- Uint32 * tmpInserPtr = &insertPtr[3];
-
- if(signalIdUsed){
- * tmpInserPtr = header->theSignalId;
- tmpInserPtr++;
- }
-
- memcpy(tmpInserPtr, theData, 4 * dataLen32);
- tmpInserPtr += dataLen32;
- for(i = 0; i<no_segs; i++){
- tmpInserPtr[i] = ptr[i].sz;
- }
- tmpInserPtr += no_segs;
- for(i = 0; i<no_segs; i++){
- import(tmpInserPtr, ptr[i]);
- }
-
- if(checksumUsed){
- * tmpInserPtr = computeChecksum(&insertPtr[0], len32-1);
- }
- }
- void
- Packer::pack(Uint32 * insertPtr,
- Uint32 prio,
- const SignalHeader * header,
- const Uint32 * theData,
- class SectionSegmentPool & thePool,
- const SegmentedSectionPtr ptr[3]) const {
- Uint32 i;
-
- Uint32 dataLen32 = header->theLength;
- Uint32 no_segs = header->m_noOfSections;
- Uint32 len32 =
- dataLen32 + no_segs +
- checksumUsed + signalIdUsed + (sizeof(Protocol6)/4);
-
- for(i = 0; i<no_segs; i++){
- len32 += ptr[i].sz;
- }
-
- /**
- * Do insert of data
- */
- Uint32 word1 = preComputedWord1;
- Uint32 word2 = 0;
- Uint32 word3 = 0;
-
- Protocol6::setPrio(word1, prio);
- Protocol6::setMessageLength(word1, len32);
- Protocol6::createProtocol6Header(word1, word2, word3, header);
- insertPtr[0] = word1;
- insertPtr[1] = word2;
- insertPtr[2] = word3;
-
- Uint32 * tmpInserPtr = &insertPtr[3];
-
- if(signalIdUsed){
- * tmpInserPtr = header->theSignalId;
- tmpInserPtr++;
- }
-
- memcpy(tmpInserPtr, theData, 4 * dataLen32);
-
- tmpInserPtr += dataLen32;
- for(i = 0; i<no_segs; i++){
- tmpInserPtr[i] = ptr[i].sz;
- }
- tmpInserPtr += no_segs;
- for(i = 0; i<no_segs; i++){
- copy(tmpInserPtr, thePool, ptr[i]);
- }
-
- if(checksumUsed){
- * tmpInserPtr = computeChecksum(&insertPtr[0], len32-1);
- }
- }