/*******************************************************************************
* BRefData.cc Referenced data storage
* T.Barnaby, Beam Ltd, 6/10/94
*******************************************************************************
*/
extern "C" {
#include <stdlib.h>
#include <string.h>
}
#include <BRefData.h>
#define DEBUG 0
#define CHUNK 16
BRefData::BRefData(){
#if DEBUG
printf("BRefData::BRefData: (%x)\n", this);
#endif
oData = 0;
oLen = 0;
oSize = 0;
oRefCount = 1;
}
BRefData::BRefData(int len){
#if DEBUG
printf("BRefData::BRefData(int): (%x)\n", this);
#endif
oData = 0;
oLen = 0;
oSize = 0;
oRefCount = 1;
setLen(len);
}
BRefData::BRefData(const BRefData& refData){
#if DEBUG
printf("BRefData::BRefData(BRefData&): (%x)\n", this);
#endif
oLen = refData.oLen;
oSize = refData.oSize;
oData = malloc(oSize);
memcpy(oData, refData.oData, oLen);
oRefCount = 1;
}
BRefData& BRefData::operator=(BRefData& refData){
#if DEBUG
printf("BRefData::operator=: (%x)\n", this);
#endif
free(oData);
oLen = refData.oLen;
oSize = refData.oSize;
oData = malloc(oSize);
memcpy(oData, refData.oData, oLen);
oRefCount = 1;
return *this;
}
BRefData::~BRefData(){
#if DEBUG
printf("BRefData::~BRefData: %x\n", this);
#endif
free(oData);
oRefCount = 0;
}
BRefData* BRefData::copy(){
BRefData* r = this;
#if DEBUG
printf("BRefData::Copy %x\n", this);
#endif
if(oRefCount != 1){
r = new BRefData(*this);
deleteRef();
}
return r;
}
BRefData* BRefData::addRef(){
#if DEBUG
printf("BRefData::AddRef: (%x) %d\n", this, oRefCount);
#endif
oRefCount++;
return this;
}
int BRefData::deleteRef(){
#if DEBUG
printf("BRefData::DeleteRef: (%x) %d\n", this, oRefCount);
#endif
oRefCount--;
if(oRefCount == 0){
free(oData);
oLen = 0;
oSize = 0;
oData = 0;
}
return oRefCount;
}
#ifdef ZAP
void* BRefData::data(){
return oData;
}
int BRefData::len(){
return oLen;
}
#endif
void BRefData::setLen(int len){
#if DEBUG
printf("BRefData::SetLen (%x) %d\n", this, len);
#endif
if(len > oSize){
oSize = len + CHUNK - 1;
oSize = (oSize / CHUNK) * CHUNK;
if(oData)
oData = realloc(oData, oSize);
else
oData = malloc(oSize);
}
oLen = len;
}
