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1 /* | 1 /* |
2 * Copyright 2014 Google Inc. | 2 * Copyright 2014 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 #ifndef GrCacheable_DEFINED | 8 #ifndef GrCacheable_DEFINED |
9 #define GrCacheable_DEFINED | 9 #define GrCacheable_DEFINED |
10 | 10 |
11 #include "SkRefCnt.h" | 11 #include "SkRefCnt.h" |
12 | 12 |
13 class GrResourceCacheEntry; | 13 class GrResourceCacheEntry; |
14 | 14 |
15 /** | 15 /** |
16 * Base class for objects that can be kept in the GrResourceCache. | 16 * Base class for objects that can be kept in the GrResourceCache. |
17 */ | 17 */ |
18 class GrCacheable : public SkRefCnt { | 18 class GrCacheable : public SkNoncopyable { |
19 public: | 19 public: |
20 SK_DECLARE_INST_COUNT(GrCacheable) | 20 SK_DECLARE_INST_COUNT_ROOT(GrCacheable) |
| 21 |
| 22 // These method signatures are written to mirror SkRefCnt. However, we don't
require |
| 23 // thread safety as GrCacheable objects are not intended to cross thread bou
ndaries. |
| 24 // internal_dispose() exists because of GrTexture's reliance on it. It will
be removed |
| 25 // soon. |
| 26 void ref() const { ++fRefCnt; } |
| 27 void unref() const { --fRefCnt; if (0 == fRefCnt) { this->internal_dispose()
; } } |
| 28 virtual void internal_dispose() const { SkDELETE(this); } |
| 29 bool unique() const { return 1 == fRefCnt; } |
| 30 #ifdef SK_DEBUG |
| 31 void validate() const { |
| 32 SkASSERT(fRefCnt > 0); |
| 33 } |
| 34 #endif |
| 35 |
| 36 virtual ~GrCacheable() { SkASSERT(0 == fRefCnt); } |
21 | 37 |
22 /** | 38 /** |
23 * Retrieves the amount of GPU memory used by this resource in bytes. It is | 39 * Retrieves the amount of GPU memory used by this resource in bytes. It is |
24 * approximate since we aren't aware of additional padding or copies made | 40 * approximate since we aren't aware of additional padding or copies made |
25 * by the driver. | 41 * by the driver. |
26 * | 42 * |
27 * @return the amount of GPU memory used in bytes | 43 * @return the amount of GPU memory used in bytes |
28 */ | 44 */ |
29 virtual size_t gpuMemorySize() const = 0; | 45 virtual size_t gpuMemorySize() const = 0; |
30 | 46 |
(...skipping 12 matching lines...) Expand all Loading... |
43 | 59 |
44 /** | 60 /** |
45 * Gets an id that is unique for this GrCacheable object. It is static in th
at it does | 61 * Gets an id that is unique for this GrCacheable object. It is static in th
at it does |
46 * not change when the content of the GrCacheable object changes. This will
never return | 62 * not change when the content of the GrCacheable object changes. This will
never return |
47 * 0. | 63 * 0. |
48 */ | 64 */ |
49 uint32_t getGenerationID() const; | 65 uint32_t getGenerationID() const; |
50 | 66 |
51 protected: | 67 protected: |
52 GrCacheable() | 68 GrCacheable() |
53 : fCacheEntry(NULL) | 69 : fRefCnt(1) |
| 70 , fCacheEntry(NULL) |
54 , fGenID(0) {} | 71 , fGenID(0) {} |
55 | 72 |
56 bool isInCache() const { return NULL != fCacheEntry; } | 73 bool isInCache() const { return NULL != fCacheEntry; } |
57 | 74 |
58 /** | 75 /** |
59 * This entry point should be called whenever gpuMemorySize() begins | 76 * This entry point should be called whenever gpuMemorySize() begins |
60 * reporting a different size. If the object is in the cache, it will call | 77 * reporting a different size. If the object is in the cache, it will call |
61 * gpuMemorySize() immediately and pass the new size on to the resource | 78 * gpuMemorySize() immediately and pass the new size on to the resource |
62 * cache. | 79 * cache. |
63 */ | 80 */ |
64 void didChangeGpuMemorySize() const; | 81 void didChangeGpuMemorySize() const; |
65 | 82 |
66 private: | 83 private: |
| 84 mutable int32_t fRefCnt; |
67 GrResourceCacheEntry* fCacheEntry; // NULL if not in cache | 85 GrResourceCacheEntry* fCacheEntry; // NULL if not in cache |
68 mutable uint32_t fGenID; | 86 mutable uint32_t fGenID; |
69 | 87 |
70 typedef SkRefCnt INHERITED; | 88 typedef SkNoncopyable INHERITED; |
71 }; | 89 }; |
72 | 90 |
73 #endif | 91 #endif |
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