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141 lines
3.5 KiB
141 lines
3.5 KiB
// debug heap support header for Microsoft
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#pragma once
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#ifndef _XDEBUG_
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#define _XDEBUG_
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#pragma pack(push,8)
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#pragma warning(push,3)
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// SUPPORT FOR DEBUG HEAP
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#if !defined(_DEBUG)
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#define _NEW_CRT new
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#define _DELETE_CRT(_P) delete (_P)
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#define _DELETE_CRT_VEC(_P) delete[] (_P)
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#define _STRING_CRT string
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#else
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#include <xmemory>
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#include <xstring>
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_STD_BEGIN
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struct _DebugHeapTag_t
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{ // placement new tag type to select debug CRT heap
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int _Type;
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};
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extern _CRTIMP2 const _DebugHeapTag_t _DebugHeapTag;
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_STD_END
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_CRTIMP2 void * __cdecl
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operator new(size_t, const std::_DebugHeapTag_t&, char *, int)
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_THROW1(std::bad_alloc); // allocate from the debug CRT heap
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_CRTIMP2 void * __cdecl
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operator new[](size_t, const std::_DebugHeapTag_t&, char *, int)
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_THROW1(std::bad_alloc); // allocate array from the debug CRT heap
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_CRTIMP2 void __cdecl
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operator delete(void *, const std::_DebugHeapTag_t&, char *, int)
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_THROW0(); // delete if new for debug CRT heap fails
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_CRTIMP2 void __cdecl
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operator delete[](void *, const std::_DebugHeapTag_t&, char *, int)
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_THROW0(); // delete if array new for debug CRT heap fails
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#define _NEW_CRT new(std::_DebugHeapTag, __FILE__, __LINE__)
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#define _DELETE_CRT(_P) std::_DebugHeapDelete(_P)
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#define _DELETE_CRT_VEC(_P) std::_DebugHeapDelete((void *)_P)
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#define _STRING_CRT _DebugHeapString
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_STD_BEGIN
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// TEMPLATE FUNCTION _DebugHeapDelete
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template<class _Ty>
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void _DebugHeapDelete(_Ty *_Ptr)
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{ // delete from the debug CRT heap even if operator delete differs
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if (_Ptr != 0)
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{
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_Ptr->~_Ty();
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// delete as _NORMAL_BLOCK, not _CRT_BLOCK, since we might have
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// facets allocated by normal new.
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free(_Ptr);
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}
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}
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// TEMPLATE CLASS _DebugHeapAllocator
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template<class _Ty>
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class _DebugHeapAllocator
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: public allocator<_Ty>
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{ // an allocator which uses the debug CRT heap
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public:
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template<class _Other>
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struct rebind
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{ // convert _DebugHeapAllocator<_Ty> to _DebugHeapAllocator<_Other>
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typedef _DebugHeapAllocator<_Other> other;
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};
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pointer allocate(size_type _Count, const void *)
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{ // allocate array of _Count elements, ignore hint
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return (_Ty *)_NEW_CRT char[_Count * sizeof(_Ty)];
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}
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pointer allocate(size_type _Count)
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{ // allocate array of _Count elements
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return (_Ty *)_NEW_CRT char[_Count * sizeof(_Ty)];
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}
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void deallocate(pointer _Ptr, size_type)
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{ // deallocate object at _Ptr, ignore size
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_DELETE_CRT_VEC(_Ptr);
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}
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};
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// CLASS _DebugHeapString
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class _DebugHeapString
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: public basic_string<char, char_traits<char>, _DebugHeapAllocator<char> >
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{ // a version of std::string allocated on the debug CRT heap
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public:
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typedef _DebugHeapString _Myt;
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typedef basic_string<char, char_traits<char>, _DebugHeapAllocator<char> >
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_Mybase;
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typedef char _Elem;
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_DebugHeapString()
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: _Mybase()
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{ // construct empty string
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}
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_DebugHeapString(const _Myt& _Right)
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: _Mybase(_Right)
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{ // construct by copying _Right
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}
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_DebugHeapString(const _Elem *_Ptr)
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: _Mybase(_Ptr)
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{ // construct from [_Ptr, <null>)
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}
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_DebugHeapString(const string &_Str)
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: _Mybase(_Str.c_str())
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{ // construct from std::string
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}
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operator string() const
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{
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return string(c_str());
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}
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};
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_STD_END
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#endif /* _DEBUG */
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#pragma warning(pop)
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#pragma pack(pop)
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#endif /* _XDEBUG_ */
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/*
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* Copyright (c) 1992-2001 by P.J. Plauger. ALL RIGHTS RESERVED.
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* Consult your license regarding permissions and restrictions.
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V3.10:0009 */
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