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1 /* | |
2 * Copyright 2010 Google Inc. | |
3 * | |
4 * Use of this source code is governed by a BSD-style license that can be | |
5 * found in the LICENSE file. | |
6 */ | |
7 | |
8 #ifndef GrAllocPool_DEFINED | |
9 #define GrAllocPool_DEFINED | |
10 | |
11 #include "SkTypes.h" | |
12 | |
13 class GrAllocPool : SkNoncopyable { | |
14 public: | |
15 GrAllocPool(size_t blockSize = 0); | |
16 ~GrAllocPool(); | |
17 | |
18 /** | |
19 * Frees all blocks that have been allocated with alloc(). | |
20 */ | |
21 void reset(); | |
22 | |
23 /** | |
24 * Returns a block of memory bytes size big. This address must not be | |
25 * passed to realloc/free/delete or any other function that assumes the | |
26 * address was allocated by malloc or new (because it hasn't). | |
27 */ | |
28 void* alloc(size_t bytes); | |
29 | |
30 /** | |
31 * Releases the most recently allocated bytes back to allocpool. | |
32 */ | |
33 void release(size_t bytes); | |
34 | |
35 private: | |
36 struct Block; | |
37 | |
38 Block* fBlock; | |
39 size_t fMinBlockSize; | |
40 | |
41 #ifdef SK_DEBUG | |
42 int fBlocksAllocated; | |
43 void validate() const; | |
44 #else | |
45 void validate() const {} | |
46 #endif | |
47 }; | |
48 | |
49 template <typename T> class GrTAllocPool { | |
50 public: | |
51 GrTAllocPool(int count) : fPool(count * sizeof(T)) {} | |
52 | |
53 void reset() { fPool.reset(); } | |
54 T* alloc() { return (T*)fPool.alloc(sizeof(T)); } | |
55 | |
56 private: | |
57 GrAllocPool fPool; | |
58 }; | |
59 | |
60 #endif | |
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