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/*
* Copyright 2010 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef GrAllocPool_DEFINED
#define GrAllocPool_DEFINED
#include "GrNoncopyable.h"
class GrAllocPool : GrNoncopyable {
public:
GrAllocPool(size_t blockSize = 0);
~GrAllocPool();
/**
* Frees all blocks that have been allocated with alloc().
*/
void reset();
/**
* Returns a block of memory bytes size big. This address must not be
* passed to realloc/free/delete or any other function that assumes the
* address was allocated by malloc or new (because it hasn't).
*/
void* alloc(size_t bytes);
/**
* Releases the most recently allocated bytes back to allocpool.
*/
void release(size_t bytes);
private:
struct Block;
Block* fBlock;
size_t fMinBlockSize;
#if GR_DEBUG
int fBlocksAllocated;
void validate() const;
#else
void validate() const {}
#endif
};
template <typename T> class GrTAllocPool {
public:
GrTAllocPool(int count) : fPool(count * sizeof(T)) {}
void reset() { fPool.reset(); }
T* alloc() { return (T*)fPool.alloc(sizeof(T)); }
private:
GrAllocPool fPool;
};
#endif
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