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Diffstat (limited to 'skia/include/corecg/SkChunkAlloc.h')
-rw-r--r-- | skia/include/corecg/SkChunkAlloc.h | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/skia/include/corecg/SkChunkAlloc.h b/skia/include/corecg/SkChunkAlloc.h new file mode 100644 index 0000000..aa4ebde --- /dev/null +++ b/skia/include/corecg/SkChunkAlloc.h @@ -0,0 +1,62 @@ +/* include/corecg/SkChunkAlloc.h +** +** Copyright 2006, Google Inc. +** +** Licensed under the Apache License, Version 2.0 (the "License"); +** you may not use this file except in compliance with the License. +** You may obtain a copy of the License at +** +** http://www.apache.org/licenses/LICENSE-2.0 +** +** Unless required by applicable law or agreed to in writing, software +** distributed under the License is distributed on an "AS IS" BASIS, +** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +** See the License for the specific language governing permissions and +** limitations under the License. +*/ + +#ifndef SkChunkAlloc_DEFINED +#define SkChunkAlloc_DEFINED + +#include "SkTypes.h" + +class SkChunkAlloc : SkNoncopyable { +public: + SkChunkAlloc(size_t minSize); + ~SkChunkAlloc(); + + /** Free up all allocated blocks. This invalidates all returned + pointers. + */ + void reset(); + + /** Reuse all allocated blocks. This invalidates all returned + pointers (like reset) but doesn't necessarily free up all + of the privately allocated blocks. This is more efficient + if you plan to reuse the allocator multiple times. + */ + void reuse(); + + enum AllocFailType { + kReturnNil_AllocFailType, + kThrow_AllocFailType + }; + + void* alloc(size_t bytes, AllocFailType); + void* allocThrow(size_t bytes) { + return this->alloc(bytes, kThrow_AllocFailType); + } + + size_t totalCapacity() const { return fTotalCapacity; } + +private: + struct Block; + Block* fBlock; + size_t fMinSize; + Block* fPool; + size_t fTotalCapacity; + + Block* newBlock(size_t bytes, AllocFailType ftype); +}; + +#endif |