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/*
* This file is part of rasdaman community.
*
* Rasdaman community 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 3 of the License, or
* (at your option) any later version.
*
* Rasdaman community 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 rasdaman community. If not, see <http://www.gnu.org/licenses/>.
*
* Copyright 2003, 2004, 2005, 2006, 2007, 2008, 2009 Peter Baumann /
rasdaman GmbH.
*
* For more information please see <http://www.rasdaman.org>
* or contact Peter Baumann via <baumann@rasdaman.com>.
/
/**
* SOURCE: akgnet_commbuffer.cc
*
* MODULE: akg network
* CLASS: CommBuffer
*
* COMMENTS:
*
*/
#include <akgnet_commbuffer.hh>
#include <string>
#include <assert.h>
akg::CommBuffer::CommBuffer() throw()
{
data = NULL;
buffSize = 0;
fillSize = 0;
sendSize = 0;
allocated= false;
}
akg::CommBuffer::CommBuffer(int size) throw()
{
assert(size > 0);
allocate(size);
}
akg::CommBuffer::CommBuffer(void *externalBuffer,int totalSize, int dataSize) throw()
{
data = NULL;
takeOver(externalBuffer,totalSize,dataSize);
}
akg::CommBuffer::~CommBuffer() throw()
{
freeBuffer();
}
bool akg::CommBuffer::allocate(int size) throw()
{
assert(size > 0);
freeBuffer();
data = new char[size];
// new throws?
buffSize=size;
allocated=true;
return true;
}
void akg::CommBuffer::freeBuffer() throw()
{
if(allocated == true && data != NULL) delete[] data;
data = NULL;
buffSize = 0;
fillSize = 0;
sendSize = 0;
allocated= false;
}
void akg::CommBuffer::takeOver(void *externalBuffer,int totalSize, int dataSize) throw()
{
assert(externalBuffer != 0);
assert(totalSize > 0);
assert(dataSize >= 0);
assert(totalSize >= dataSize);
freeBuffer();
data = (char*)externalBuffer;
buffSize = totalSize;
fillSize = dataSize;
}
bool akg::CommBuffer::resize(int newSize) throw()
{
assert(data != 0);
// we can't make the buffer smaller by truncating inside data!
if(newSize < fillSize) return false;
char *newData = new char[newSize];
memcpy(newData, data, fillSize);
if(allocated == true ) delete[] data;
data = newData;
buffSize = newSize;
allocated = true;
return true;
}
void* akg::CommBuffer::getData() throw(){ return data;}
int akg::CommBuffer::getDataSize() throw(){ return fillSize;}
int akg::CommBuffer::getBufferSize() throw(){ return buffSize;}
int akg::CommBuffer::getSendedSize() throw(){ return sendSize;}
int akg::CommBuffer::getNotFilledSize() throw(){ return buffSize-fillSize;}
int akg::CommBuffer::getNotSendedSize() throw(){ return fillSize-sendSize;}
bool akg::CommBuffer::isAllocated() throw(){ return allocated;}
int akg::CommBuffer::read(FileDescriptor &socket) throw()
{
int rasp = socket.read(data+fillSize,buffSize-fillSize);
if(rasp>=0) fillSize += rasp;
return rasp;
}
int akg::CommBuffer::read(const void *externalBuffer,int size) throw()
{
assert(externalBuffer != 0);
assert(size >= 0);
int cpSize = size<(buffSize-fillSize) ? size:(buffSize-fillSize);
memcpy(data+fillSize,externalBuffer,cpSize);
fillSize += cpSize;
return cpSize;
}
int akg::CommBuffer::reserve(int size) throw()
{
assert(size >= 0);
int cpSize = size<(buffSize-fillSize) ? size:(buffSize-fillSize);
fillSize += cpSize;
return cpSize;
}
int akg::CommBuffer::write(FileDescriptor &socket) throw()
{
DBTALK("CommBuffer write fillSize="<<fillSize<<" sendSize="<<sendSize);
int rasp = socket.write(data+sendSize,fillSize-sendSize);
if(rasp>=0) sendSize+=rasp;
return rasp;
}
int akg::CommBuffer::write(void *externalBuffer,int size) throw()
{
assert(externalBuffer != 0);
assert(size >= 0);
int cpSize = size<(fillSize-sendSize) ? size:(fillSize-sendSize);
memcpy(externalBuffer,data+sendSize,cpSize);
sendSize+=cpSize;
return cpSize;
}
void akg::CommBuffer::clearToRead() throw()
{
DBTALK("CommBuffer clearToRead");
fillSize=0;sendSize=0;
}
void akg::CommBuffer::clearToWrite() throw()
{
DBTALK("CommBuffer clearToWrite");
sendSize=0;
}
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