forked from qt-creator/qt-creator
39a38d5679
Kudos to cgmb and https://github.com/cgmb/guardonce Change-Id: Ifa8970734b8d43fd08c9260c645bdb0228633791 Reviewed-by: Tobias Hunger <tobias.hunger@theqtcompany.com>
84 lines
2.2 KiB
C++
84 lines
2.2 KiB
C++
// Copyright (c) 2008 Roberto Raggi <roberto.raggi@gmail.com>
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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#pragma once
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#include "CPlusPlusForwardDeclarations.h"
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#include <new>
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namespace CPlusPlus {
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class MemoryPool;
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class CPLUSPLUS_EXPORT MemoryPool
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{
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MemoryPool(const MemoryPool &other);
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void operator =(const MemoryPool &other);
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public:
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MemoryPool();
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~MemoryPool();
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void reset();
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inline void *allocate(size_t size)
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{
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size = (size + 7) & ~7;
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if (_ptr && (_ptr + size < _end)) {
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void *addr = _ptr;
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_ptr += size;
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return addr;
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}
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return allocate_helper(size);
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}
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private:
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void *allocate_helper(size_t size);
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private:
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char **_blocks;
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int _allocatedBlocks;
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int _blockCount;
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char *_ptr;
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char *_end;
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enum
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{
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BLOCK_SIZE = 8 * 1024,
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DEFAULT_BLOCK_COUNT = 8
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};
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};
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class CPLUSPLUS_EXPORT Managed
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{
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Managed(const Managed &other);
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void operator = (const Managed &other);
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public:
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Managed();
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virtual ~Managed();
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void *operator new(size_t size, MemoryPool *pool);
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void operator delete(void *);
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void operator delete(void *, MemoryPool *);
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};
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} // namespace CPlusPlus
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