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 validate()45 void validate() const {} 46 #endif 47 }; 48 49 template <typename T> class GrTAllocPool { 50 public: GrTAllocPool(int count)51 GrTAllocPool(int count) : fPool(count * sizeof(T)) {} 52 reset()53 void reset() { fPool.reset(); } alloc()54 T* alloc() { return (T*)fPool.alloc(sizeof(T)); } 55 56 private: 57 GrAllocPool fPool; 58 }; 59 60 #endif 61