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94 lines
2.2 KiB
C++
94 lines
2.2 KiB
C++
/**
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* Copyright (c) 2000-2013 Liferay, Inc. All rights reserved.
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*
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* This library is free software; you can redistribute it and/or modify it under
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* the terms of the GNU Lesser General Public License as published by the Free
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* Software Foundation; either version 2.1 of the License, or (at your option)
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* any later version.
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*
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* This library is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
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* details.
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*/
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#include <windows.h>
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#include <new>
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#include "NCOverlayFactory.h"
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#include "NCOverlay.h"
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extern long dllReferenceCount;
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NCOverlayFactory::NCOverlayFactory(int state)
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: _referenceCount(1), _state(state)
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{
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InterlockedIncrement(&dllReferenceCount);
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}
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NCOverlayFactory::~NCOverlayFactory()
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{
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InterlockedDecrement(&dllReferenceCount);
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}
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IFACEMETHODIMP NCOverlayFactory::QueryInterface(REFIID riid, void **ppv)
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{
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HRESULT hResult = S_OK;
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if (IsEqualIID(IID_IUnknown, riid) ||
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IsEqualIID(IID_IClassFactory, riid))
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{
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*ppv = static_cast<IUnknown *>(this);
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AddRef();
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}
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else
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{
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hResult = E_NOINTERFACE;
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*ppv = nullptr;
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}
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return hResult;
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}
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IFACEMETHODIMP_(ULONG) NCOverlayFactory::AddRef()
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{
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return InterlockedIncrement(&_referenceCount);
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}
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IFACEMETHODIMP_(ULONG) NCOverlayFactory::Release()
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{
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ULONG cRef = InterlockedDecrement(&_referenceCount);
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if (0 == cRef)
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{
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delete this;
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}
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return cRef;
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}
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IFACEMETHODIMP NCOverlayFactory::CreateInstance(
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IUnknown *pUnkOuter, REFIID riid, void **ppv)
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{
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HRESULT hResult = CLASS_E_NOAGGREGATION;
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if (pUnkOuter) { return hResult; }
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hResult = E_OUTOFMEMORY;
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auto lrOverlay = new (std::nothrow) NCOverlay(_state);
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if (!lrOverlay) { return hResult; }
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hResult = lrOverlay->QueryInterface(riid, ppv);
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lrOverlay->Release();
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return hResult;
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}
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IFACEMETHODIMP NCOverlayFactory::LockServer(BOOL fLock)
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{
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if (fLock) {
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InterlockedIncrement(&dllReferenceCount);
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} else {
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InterlockedDecrement(&dllReferenceCount);
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}
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return S_OK;
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}
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