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1 /* | 1 /* |
2 * Copyright 2013 Google Inc. | 2 * Copyright 2013 Google Inc. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license that can be | 4 * Use of this source code is governed by a BSD-style license that can be |
5 * found in the LICENSE file. | 5 * found in the LICENSE file. |
6 */ | 6 */ |
7 | 7 |
8 #include "SkDiscardableMemory.h" | 8 #include "SkDiscardableMemory.h" |
| 9 #include "SkTypes.h" |
| 10 |
| 11 namespace { |
| 12 //////////////////////////////////////////////////////////////////////////////// |
| 13 /** |
| 14 * Always successful, never purges. Useful for testing. |
| 15 */ |
| 16 class SkMockDiscardableMemory : public SkDiscardableMemory { |
| 17 public: |
| 18 SkMockDiscardableMemory(void*); |
| 19 virtual ~SkMockDiscardableMemory(); |
| 20 virtual bool lock() SK_OVERRIDE; |
| 21 virtual void* data() SK_OVERRIDE; |
| 22 virtual void unlock() SK_OVERRIDE; |
| 23 private: |
| 24 bool fLocked; |
| 25 void* fPointer; |
| 26 }; |
| 27 |
| 28 //////////////////////////////////////////////////////////////////////////////// |
| 29 |
| 30 SkMockDiscardableMemory::SkMockDiscardableMemory(void* ptr) |
| 31 : fLocked(true) |
| 32 , fPointer(ptr) { // Takes ownership of ptr. |
| 33 SkASSERT(fPointer != NULL); |
| 34 } |
| 35 |
| 36 SkMockDiscardableMemory::~SkMockDiscardableMemory() { |
| 37 SkASSERT(!fLocked); |
| 38 sk_free(fPointer); |
| 39 } |
| 40 |
| 41 bool SkMockDiscardableMemory::lock() { |
| 42 SkASSERT(!fLocked); |
| 43 return fLocked = true; |
| 44 } |
| 45 |
| 46 void* SkMockDiscardableMemory::data() { |
| 47 SkASSERT(fLocked); |
| 48 return fLocked ? fPointer : NULL; |
| 49 } |
| 50 |
| 51 void SkMockDiscardableMemory::unlock() { |
| 52 SkASSERT(fLocked); |
| 53 fLocked = false; |
| 54 } |
| 55 //////////////////////////////////////////////////////////////////////////////// |
| 56 } // namespace |
9 | 57 |
10 SkDiscardableMemory* SkDiscardableMemory::Create(size_t bytes) { | 58 SkDiscardableMemory* SkDiscardableMemory::Create(size_t bytes) { |
11 return NULL; | 59 void* ptr = sk_malloc_throw(bytes); |
| 60 return (ptr != NULL) ? SkNEW_ARGS(SkMockDiscardableMemory, (ptr)) : NULL; |
12 } | 61 } |
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