86afc2ae27
Review URL: http://codereview.appspot.com/4178057/ git-svn-id: http://skia.googlecode.com/svn/trunk@800 2bbb7eff-a529-9590-31e7-b0007b416f81
72 lines
1.7 KiB
C++
72 lines
1.7 KiB
C++
/*
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Copyright 2010 Google Inc.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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#ifndef GrAllocPool_DEFINED
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#define GrAllocPool_DEFINED
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#include "GrNoncopyable.h"
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class GrAllocPool : GrNoncopyable {
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public:
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GrAllocPool(size_t blockSize = 0);
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~GrAllocPool();
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/**
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* Frees all blocks that have been allocated with alloc().
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*/
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void reset();
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/**
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* Returns a block of memory bytes size big. This address must not be
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* passed to realloc/free/delete or any other function that assumes the
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* address was allocated by malloc or new (because it hasn't).
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*/
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void* alloc(size_t bytes);
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/**
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* Releases the most recently allocated bytes back to allocpool.
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*/
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void release(size_t bytes);
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private:
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struct Block;
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Block* fBlock;
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size_t fMinBlockSize;
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#if GR_DEBUG
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int fBlocksAllocated;
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void validate() const;
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#else
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void validate() const {}
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#endif
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};
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template <typename T> class GrTAllocPool {
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public:
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GrTAllocPool(int count) : fPool(count * sizeof(T)) {}
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void reset() { fPool.reset(); }
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T* alloc() { return (T*)fPool.alloc(sizeof(T)); }
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private:
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GrAllocPool fPool;
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};
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#endif
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