82 lines
1.7 KiB
C++
82 lines
1.7 KiB
C++
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#if __SC__ || __RCC__
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#pragma once
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#endif
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#ifndef _H_RTLHEAP
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#define _H_RTLHEAP
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#include <stdlib.h>
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#ifndef _CRTIMP
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#if defined(_WIN32) && defined(_DLL)
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#define _CRTIMP __declspec(dllimport)
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#else
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#define _CRTIMP
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#endif
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#endif
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#if __cplusplus
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extern "C"
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{
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#endif
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typedef struct {char unused;} *HRTLPOOL;
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// Create a pool of fixed sized objects
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HRTLPOOL _CRTIMP RTLPoolCreate(size_t);
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// Allocate an item from the pool
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void * _CRTIMP RTLPoolAlloc(HRTLPOOL hPool);
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// Free an item from the pool
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void _CRTIMP RTLPoolFree(HRTLPOOL pPool, void *pData);
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// Destroy the pool
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void _CRTIMP RTLPoolDestroy(HRTLPOOL pPool);
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#if __cplusplus
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};
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#endif
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#if __cplusplus
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// Macros to implement class-specific new/delete using a fixed size pool.
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//
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// In the header:
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// class CDataRecord
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// {
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// RTL_DECLARE_POOL()
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// public:
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// };
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//
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// In the source:
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// RTL_IMPLEMENT_POOL(CDataRecord)
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//
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class RTLPoolWrapper
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{
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public:
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RTLPoolWrapper(size_t size) : m_size(size), hPool(RTLPoolCreate(size)) {}
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~RTLPoolWrapper() {RTLPoolDestroy(hPool);}
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void *Alloc(size_t size) {return size==m_size ? RTLPoolAlloc(hPool) : malloc(size);}
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void Free(void *p, size_t size) {if (size==m_size) RTLPoolFree(hPool, p); else free(p);}
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private:
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size_t m_size;
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HRTLPOOL hPool;
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};
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#define RTL_DECLARE_POOL() \
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public: \
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void *operator new(size_t ); \
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void operator delete(void* , size_t ); \
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private: \
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static RTLPoolWrapper m_RTLPool;
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#define RTL_IMPLEMENT_POOL(CLASS) \
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RTLPoolWrapper CLASS::m_RTLPool(sizeof(CLASS)); \
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void *CLASS::operator new(size_t n) {return m_RTLPool.Alloc(n);} \
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void CLASS::operator delete(void* p, size_t n) {m_RTLPool.Free(p,n);}
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#endif
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#endif
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