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1 // Copyright 2013 The Chromium Authors. All rights reserved. | 1 // Copyright 2013 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef SK_REF_CNT_EXT_DEBUG_H_ | 5 #ifndef SK_REF_CNT_EXT_DEBUG_H_ |
6 #define SK_REF_CNT_EXT_DEBUG_H_ | 6 #define SK_REF_CNT_EXT_DEBUG_H_ |
7 | 7 |
8 #ifdef SK_REF_CNT_EXT_RELEASE_H_ | 8 #ifdef SK_REF_CNT_EXT_RELEASE_H_ |
9 #error Only one SkRefCnt should be used. | 9 #error Only one SkRefCnt should be used. |
10 #endif | 10 #endif |
11 | 11 |
12 #include <atomic> | |
13 | |
14 // Alternate implementation of SkRefCnt for Chromium debug builds | 12 // Alternate implementation of SkRefCnt for Chromium debug builds |
15 class SK_API SkRefCnt : public SkRefCntBase { | 13 class SK_API SkRefCnt : public SkRefCntBase { |
16 public: | 14 public: |
17 SkRefCnt() : flags_(0) {} | 15 SkRefCnt() : flags_(0) {} |
18 void ref() const { SkASSERT(flags_.load() != AdoptionRequired_Flag); SkRefCntB
ase::ref(); } | 16 void ref() const { SkASSERT(flags_ != AdoptionRequired_Flag); SkRefCntBase::re
f(); } |
19 void adopted() const { flags_ |= Adopted_Flag; } | 17 void adopted() const { flags_ |= Adopted_Flag; } |
20 void requireAdoption() const { flags_ |= AdoptionRequired_Flag; } | 18 void requireAdoption() const { flags_ |= AdoptionRequired_Flag; } |
21 void deref() const { SkRefCntBase::unref(); } | 19 void deref() const { SkRefCntBase::unref(); } |
22 private: | 20 private: |
23 | |
24 enum { | 21 enum { |
25 Adopted_Flag = 0x1, | 22 Adopted_Flag = 0x1, |
26 AdoptionRequired_Flag = 0x2, | 23 AdoptionRequired_Flag = 0x2, |
27 }; | 24 }; |
28 | 25 |
29 mutable std::atomic<int> flags_; | 26 mutable int flags_; |
30 }; | 27 }; |
31 | 28 |
32 // Bootstrap for Blink's WTF::RefPtr | 29 // Bootstrap for Blink's WTF::RefPtr |
33 | 30 |
34 namespace WTF { | 31 namespace WTF { |
35 inline void adopted(const SkRefCnt* object) { | 32 inline void adopted(const SkRefCnt* object) { |
36 if (!object) | 33 if (!object) |
37 return; | 34 return; |
38 object->adopted(); | 35 object->adopted(); |
39 } | 36 } |
40 inline void requireAdoption(const SkRefCnt* object) { | 37 inline void requireAdoption(const SkRefCnt* object) { |
41 if (!object) | 38 if (!object) |
42 return; | 39 return; |
43 object->requireAdoption(); | 40 object->requireAdoption(); |
44 } | 41 } |
45 }; | 42 }; |
46 | 43 |
47 using WTF::adopted; | 44 using WTF::adopted; |
48 using WTF::requireAdoption; | 45 using WTF::requireAdoption; |
49 | 46 |
50 #endif | 47 #endif |
51 | 48 |
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