56 lines
1.2 KiB
C++
56 lines
1.2 KiB
C++
|
// RCObject.cpp -- Reference counted abstract base class
|
||
|
|
|
||
|
|
// (c) Copyright Schlumberger Technology Corp., unpublished work, created
|
||
|
|
// 1999. This computer program includes Confidential, Proprietary
|
||
|
|
// Information and is a Trade Secret of Schlumberger Technology Corp. All
|
||
|
|
// use, disclosure, and/or reproduction is prohibited unless authorized
|
||
|
|
// in writing. All Rights Reserved.
|
||
|
|
|
||
|
|
#include <stdexcept> // for over/under flow
|
||
|
|
#include "windows.h"
|
||
|
|
#include "winbase.h"
|
||
|
|
#include "slbRCObj.h"
|
||
|
|
|
||
|
|
using namespace std;
|
||
|
|
using namespace slbRefCnt;
|
||
|
|
|
||
|
|
void
|
||
|
|
RCObject::AddReference()
|
||
|
|
{
|
||
|
|
// guard against overflow
|
||
|
|
if (0 > InterlockedIncrement(&m_cRefCount))
|
||
|
|
throw std::overflow_error("SLB: Reference Count overflow");
|
||
|
|
}
|
||
|
|
|
||
|
|
void
|
||
|
|
RCObject::RemoveReference()
|
||
|
|
{
|
||
|
|
LONG count = InterlockedDecrement(&m_cRefCount);
|
||
|
|
if (0 > count)
|
||
|
|
throw std::overflow_error("SLB: Reference Count underflow");
|
||
|
|
|
||
|
|
if (0 == count)
|
||
|
|
delete this;
|
||
|
|
}
|
||
|
|
|
||
|
|
RCObject::RCObject()
|
||
|
|
: m_cRefCount(0)
|
||
|
|
{
|
||
|
|
}
|
||
|
|
|
||
|
|
RCObject::RCObject(RCObject const&)
|
||
|
|
: m_cRefCount(0)
|
||
|
|
{
|
||
|
|
}
|
||
|
|
|
||
|
|
RCObject::~RCObject()
|
||
|
|
{
|
||
|
|
}
|
||
|
|
|
||
|
|
RCObject &
|
||
|
|
RCObject::operator=(RCObject const&)
|
||
|
|
{
|
||
|
|
return *this;
|
||
|
|
}
|
||
|
|
|