43 lines
840 B
C++
43 lines
840 B
C++
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// Copyright (c) 2011 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "base/win/iunknown_impl.h"
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namespace base {
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namespace win {
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IUnknownImpl::IUnknownImpl()
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: ref_count_(0) {
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}
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IUnknownImpl::~IUnknownImpl() {
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}
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ULONG STDMETHODCALLTYPE IUnknownImpl::AddRef() {
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base::AtomicRefCountInc(&ref_count_);
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return 1;
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}
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ULONG STDMETHODCALLTYPE IUnknownImpl::Release() {
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if (!base::AtomicRefCountDec(&ref_count_)) {
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delete this;
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return 0;
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}
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return 1;
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}
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STDMETHODIMP IUnknownImpl::QueryInterface(REFIID riid, void** ppv) {
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if (riid == IID_IUnknown) {
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*ppv = static_cast<IUnknown*>(this);
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AddRef();
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return S_OK;
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}
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*ppv = NULL;
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return E_NOINTERFACE;
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}
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} // namespace win
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} // namespace base
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