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1 | 1 |
2 /* | 2 /* |
3 * Copyright 2006 The Android Open Source Project | 3 * Copyright 2006 The Android Open Source Project |
4 * | 4 * |
5 * Use of this source code is governed by a BSD-style license that can be | 5 * Use of this source code is governed by a BSD-style license that can be |
6 * found in the LICENSE file. | 6 * found in the LICENSE file. |
7 */ | 7 */ |
8 | 8 |
9 | 9 |
10 #ifndef SkChunkAlloc_DEFINED | 10 #ifndef SkChunkAlloc_DEFINED |
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35 | 35 |
36 /** Call this to unalloc the most-recently allocated ptr by alloc(). On | 36 /** Call this to unalloc the most-recently allocated ptr by alloc(). On |
37 success, the number of bytes freed is returned, or 0 if the block could | 37 success, the number of bytes freed is returned, or 0 if the block could |
38 not be unallocated. This is a hint to the underlying allocator that | 38 not be unallocated. This is a hint to the underlying allocator that |
39 the previous allocation may be reused, but the implementation is free | 39 the previous allocation may be reused, but the implementation is free |
40 to ignore this call (and return 0). | 40 to ignore this call (and return 0). |
41 */ | 41 */ |
42 size_t unalloc(void* ptr); | 42 size_t unalloc(void* ptr); |
43 | 43 |
44 size_t totalCapacity() const { return fTotalCapacity; } | 44 size_t totalCapacity() const { return fTotalCapacity; } |
| 45 size_t totalUsed() const { return fTotalUsed; } |
45 int blockCount() const { return fBlockCount; } | 46 int blockCount() const { return fBlockCount; } |
46 | 47 |
47 /** | 48 /** |
48 * Returns true if the specified address is within one of the chunks, and | 49 * Returns true if the specified address is within one of the chunks, and |
49 * has at least 1-byte following the address (i.e. if addr points to the | 50 * has at least 1-byte following the address (i.e. if addr points to the |
50 * end of a chunk, then contains() will return false). | 51 * end of a chunk, then contains() will return false). |
51 */ | 52 */ |
52 bool contains(const void* addr) const; | 53 bool contains(const void* addr) const; |
53 | 54 |
54 private: | 55 private: |
55 struct Block; | 56 struct Block; |
56 | 57 |
57 Block* fBlock; | 58 Block* fBlock; |
58 size_t fMinSize; | 59 size_t fMinSize; |
59 size_t fChunkSize; | 60 size_t fChunkSize; |
60 size_t fTotalCapacity; | 61 size_t fTotalCapacity; |
| 62 size_t fTotalUsed; // will be <= fTotalCapacity |
61 int fBlockCount; | 63 int fBlockCount; |
62 | 64 |
63 Block* newBlock(size_t bytes, AllocFailType ftype); | 65 Block* newBlock(size_t bytes, AllocFailType ftype); |
64 }; | 66 }; |
65 | 67 |
66 #endif | 68 #endif |
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