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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; version 2 of the License.
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 "SendBuffer.hpp"
#include "TransporterInternalDefinitions.hpp"
SendBuffer::SendBuffer(Uint32 bufSize) {
sizeOfBuffer = bufSize;
if(sizeOfBuffer < MAX_MESSAGE_SIZE)
sizeOfBuffer = 2 * MAX_MESSAGE_SIZE;
startOfBuffer = NULL;
// Initalise pointers
endOfBuffer = NULL;
insertPtr = NULL;
sendPtr = NULL;
sendDataSize = 0;
dataSize = 0;
}
bool
SendBuffer::initBuffer(Uint32 aRemoteNodeId) {
// Allocate memory for the buffer
#ifdef DEBUG_TRANSPORTER
ndbout << "Allocating " << sizeOfBuffer << " bytes for send buffer" << endl;
#endif
startOfBuffer = new Uint32[(sizeOfBuffer >> 2) + 1];
endOfBuffer = startOfBuffer + (sizeOfBuffer >> 2);
emptyBuffer();
theRemoteNodeId = aRemoteNodeId;
return true;
}
SendBuffer::~SendBuffer() {
// Deallocate the buffer memory
if(startOfBuffer != NULL)
delete[] startOfBuffer;
}
int
SendBuffer::bufferSize() {
return dataSize;
}
Uint32
SendBuffer::bufferSizeRemaining() const {
return (sizeOfBuffer - dataSize);
}
void
SendBuffer::emptyBuffer() {
insertPtr = startOfBuffer;
sendPtr = (char*)startOfBuffer;
dataSize = 0;
sendDataSize = 0;
}
#ifdef DEBUG_TRANSPORTER
void
SendBuffer::print() {
printf("SendBuffer status printouts\n");
printf( "sizeOfBuffer: %d\n", sizeOfBuffer);
printf( "startOfBuffer: %.8x\n", startOfBuffer);
printf( "endOfBuffer: %.8x\n", endOfBuffer);
printf( "insertPtr: %.8x\n", insertPtr);
printf( "sendPtr: %.8x\n", sendPtr);
printf( "sendDataSize: %d\n", sendDataSize);
printf( "dataSize: %d\n", dataSize);
}
#endif
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