gfx/skia/trunk/include/utils/win/SkTScopedComPtr.h@129ffea94266
gfx/skia/trunk/include/utils/win/SkTScopedComPtr.h
Sat, 03 Jan 2015 20:18:00 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Sat, 03 Jan 2015 20:18:00 +0100
- branch
- TOR_BUG_3246
- changeset 7
- 129ffea94266
- permissions
- -rw-r--r--
Conditionally enable double key logic according to:
private browsing mode or privacy.thirdparty.isolate preference and
implement in GetCookieStringCommon and FindCookie where it counts...
With some reservations of how to convince FindCookie users to test
condition and pass a nullptr when disabling double key logic.
2 /*
3 * Copyright 2011 Google Inc.
4 *
5 * Use of this source code is governed by a BSD-style license that can be
6 * found in the LICENSE file.
7 */
9 #ifndef SkTScopedComPtr_DEFINED
10 #define SkTScopedComPtr_DEFINED
12 #include "SkTypes.h"
13 #include "SkTemplates.h"
15 template<typename T>
16 class SkBlockComRef : public T {
17 private:
18 virtual ULONG STDMETHODCALLTYPE AddRef(void) = 0;
19 virtual ULONG STDMETHODCALLTYPE Release(void) = 0;
20 };
22 template<typename T> T* SkRefComPtr(T* ptr) {
23 ptr->AddRef();
24 return ptr;
25 }
27 template<typename T> T* SkSafeRefComPtr(T* ptr) {
28 if (ptr) {
29 ptr->AddRef();
30 }
31 return ptr;
32 }
34 template<typename T>
35 class SkTScopedComPtr : SkNoncopyable {
36 private:
37 T *fPtr;
39 public:
40 explicit SkTScopedComPtr(T *ptr = NULL) : fPtr(ptr) { }
41 ~SkTScopedComPtr() {
42 this->reset();
43 }
44 T &operator*() const { SkASSERT(fPtr != NULL); return *fPtr; }
45 SkBlockComRef<T> *operator->() const {
46 return static_cast<SkBlockComRef<T>*>(fPtr);
47 }
48 /**
49 * Returns the address of the underlying pointer.
50 * This is dangerous -- it breaks encapsulation and the reference escapes.
51 * Must only be used on instances currently pointing to NULL,
52 * and only to initialize the instance.
53 */
54 T **operator&() { SkASSERT(fPtr == NULL); return &fPtr; }
55 T *get() const { return fPtr; }
56 void reset() {
57 if (NULL != this->fPtr) {
58 this->fPtr->Release();
59 this->fPtr = NULL;
60 }
61 }
63 void swap(SkTScopedComPtr<T>& that) {
64 T* temp = this->fPtr;
65 this->fPtr = that.fPtr;
66 that.fPtr = temp;
67 }
69 T* release() {
70 T* temp = this->fPtr;
71 this->fPtr = NULL;
72 return temp;
73 }
74 };
76 #endif
