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| 1 | 1 |
| 2 /* | 2 /* |
| 3 * Copyright 2010 Google Inc. | 3 * Copyright 2010 Google Inc. |
| 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 | 10 |
| 11 #include "GrAllocPool.h" | 11 #include "GrAllocPool.h" |
| 12 | 12 |
| 13 #define GrAllocPool_MIN_BLOCK_SIZE ((size_t)128) | 13 #define GrAllocPool_MIN_BLOCK_SIZE ((size_t)128) |
| 14 | 14 |
| 15 struct GrAllocPool::Block { | 15 struct GrAllocPool::Block { |
| 16 Block* fNext; | 16 Block* fNext; |
| 17 char* fPtr; | 17 char* fPtr; |
| 18 size_t fBytesFree; | 18 size_t fBytesFree; |
| 19 size_t fBytesTotal; | 19 size_t fBytesTotal; |
| 20 | 20 |
| 21 static Block* Create(size_t size, Block* next) { | 21 static Block* Create(size_t size, Block* next) { |
| 22 GrAssert(size >= GrAllocPool_MIN_BLOCK_SIZE); | 22 SkASSERT(size >= GrAllocPool_MIN_BLOCK_SIZE); |
| 23 | 23 |
| 24 Block* block = (Block*)GrMalloc(sizeof(Block) + size); | 24 Block* block = (Block*)GrMalloc(sizeof(Block) + size); |
| 25 block->fNext = next; | 25 block->fNext = next; |
| 26 block->fPtr = (char*)block + sizeof(Block); | 26 block->fPtr = (char*)block + sizeof(Block); |
| 27 block->fBytesFree = size; | 27 block->fBytesFree = size; |
| 28 block->fBytesTotal = size; | 28 block->fBytesTotal = size; |
| 29 return block; | 29 return block; |
| 30 } | 30 } |
| 31 | 31 |
| 32 bool canAlloc(size_t bytes) const { | 32 bool canAlloc(size_t bytes) const { |
| 33 return bytes <= fBytesFree; | 33 return bytes <= fBytesFree; |
| 34 } | 34 } |
| 35 | 35 |
| 36 void* alloc(size_t bytes) { | 36 void* alloc(size_t bytes) { |
| 37 GrAssert(bytes <= fBytesFree); | 37 SkASSERT(bytes <= fBytesFree); |
| 38 fBytesFree -= bytes; | 38 fBytesFree -= bytes; |
| 39 void* ptr = fPtr; | 39 void* ptr = fPtr; |
| 40 fPtr += bytes; | 40 fPtr += bytes; |
| 41 return ptr; | 41 return ptr; |
| 42 } | 42 } |
| 43 | 43 |
| 44 size_t release(size_t bytes) { | 44 size_t release(size_t bytes) { |
| 45 GrAssert(bytes > 0); | 45 SkASSERT(bytes > 0); |
| 46 size_t free = GrMin(bytes, fBytesTotal - fBytesFree); | 46 size_t free = GrMin(bytes, fBytesTotal - fBytesFree); |
| 47 fBytesFree += free; | 47 fBytesFree += free; |
| 48 fPtr -= free; | 48 fPtr -= free; |
| 49 return bytes - free; | 49 return bytes - free; |
| 50 } | 50 } |
| 51 | 51 |
| 52 bool empty() const { return fBytesTotal == fBytesFree; } | 52 bool empty() const { return fBytesTotal == fBytesFree; } |
| 53 }; | 53 }; |
| 54 | 54 |
| 55 /////////////////////////////////////////////////////////////////////////////// | 55 /////////////////////////////////////////////////////////////////////////////// |
| (...skipping 49 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
| 105 | 105 |
| 106 #if GR_DEBUG | 106 #if GR_DEBUG |
| 107 | 107 |
| 108 void GrAllocPool::validate() const { | 108 void GrAllocPool::validate() const { |
| 109 Block* block = fBlock; | 109 Block* block = fBlock; |
| 110 int count = 0; | 110 int count = 0; |
| 111 while (block) { | 111 while (block) { |
| 112 count += 1; | 112 count += 1; |
| 113 block = block->fNext; | 113 block = block->fNext; |
| 114 } | 114 } |
| 115 GrAssert(fBlocksAllocated == count); | 115 SkASSERT(fBlocksAllocated == count); |
| 116 } | 116 } |
| 117 | 117 |
| 118 #endif | 118 #endif |
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