0cbe7ee765
cmake: remove unused directories from skia.h / ${public_includes}
SkPreConfig.h: work around buggy `#ifdef linux`
include: guard many platform-specific headers
CQ_EXTRA_TRYBOTS=client.skia.compile:Build-Ubuntu-GCC-x86_64-Release-CMake-Trybot,Build-Mac10.9-Clang-x86_64-Release-CMake-Trybot
Review URL: https://codereview.chromium.org/1488813002
78 lines
1.8 KiB
C++
78 lines
1.8 KiB
C++
/*
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* Copyright 2011 Google Inc.
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*
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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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*/
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#ifndef SkTScopedComPtr_DEFINED
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#define SkTScopedComPtr_DEFINED
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#include "SkTypes.h"
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#ifdef SK_BUILD_FOR_WIN
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template<typename T>
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class SkBlockComRef : public T {
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private:
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virtual ULONG STDMETHODCALLTYPE AddRef(void) = 0;
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virtual ULONG STDMETHODCALLTYPE Release(void) = 0;
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};
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template<typename T> T* SkRefComPtr(T* ptr) {
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ptr->AddRef();
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return ptr;
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}
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template<typename T> T* SkSafeRefComPtr(T* ptr) {
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if (ptr) {
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ptr->AddRef();
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}
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return ptr;
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}
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template<typename T>
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class SkTScopedComPtr : SkNoncopyable {
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private:
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T *fPtr;
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public:
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explicit SkTScopedComPtr(T *ptr = NULL) : fPtr(ptr) { }
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~SkTScopedComPtr() {
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this->reset();
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}
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T &operator*() const { SkASSERT(fPtr != NULL); return *fPtr; }
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SkBlockComRef<T> *operator->() const {
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return static_cast<SkBlockComRef<T>*>(fPtr);
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}
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/**
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* Returns the address of the underlying pointer.
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* This is dangerous -- it breaks encapsulation and the reference escapes.
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* Must only be used on instances currently pointing to NULL,
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* and only to initialize the instance.
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*/
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T **operator&() { SkASSERT(fPtr == NULL); return &fPtr; }
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T *get() const { return fPtr; }
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void reset() {
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if (this->fPtr) {
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this->fPtr->Release();
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this->fPtr = NULL;
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}
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}
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void swap(SkTScopedComPtr<T>& that) {
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T* temp = this->fPtr;
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this->fPtr = that.fPtr;
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that.fPtr = temp;
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}
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T* release() {
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T* temp = this->fPtr;
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this->fPtr = NULL;
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return temp;
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}
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};
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#endif // SK_BUILD_FOR_WIN
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#endif // SkTScopedComPtr_DEFINED
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