Leaked source code of windows server 2003
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/*
* M E M . H * * DAV basic memory allocators. Implementation of this class is * owned by the individual implementations * * Copyright 1986-1997 Microsoft Corporation, All Rights Reserved */
#ifndef _MEM_H_
#define _MEM_H_
#ifdef _DAVCDATA_
#error "mem.h defines throwing allocators"
#endif
// Global heap "class" ---------------------------------------------------------
//
// This really only acts as a namespace. I.e. there are no non-static members.
// For historical reasons (and, mainly, to avoid changing a LOT of code from
// calling "g_heap.Fn()" to calling "g_heap::Fn()"), g_heap still appears
// outwardly to be a real object.
//
// !!! CHeap is used by multiple components. Specifically, it may be
// *IMPLEMENTED* by multiple components in various locations.
// When changing the CHeap interface, make sure to recompile
// EVERYTHING in the project.
//
struct CHeap{ static BOOL FInit(); static void Deinit(); static LPVOID Alloc( SIZE_T cb ); static LPVOID Realloc( LPVOID lpv, SIZE_T cb ); static VOID Free( LPVOID pv );};
extern CHeap g_heap;
// Safe allocators
//
#include <ex\exmem.h>
// Try using pragmas to turn off the undesired warnings from the STL.
#pragma warning(disable:4663) // C language, template<> syntax
#pragma warning(disable:4244) // return conversion, data loss
#include <memory>
// And undo it all so that we still get good checking!
#pragma warning(default:4663) // C language, template<> syntax
#pragma warning(default:4244) // return conversion, data loss
// ========================================================================
//
// TEMPLATE CLASS heap_allocator<>
//
// Allocator class to work with the STL (Standard C++ Template Library).
// Allocations actually handled by our global heap allocator.
//
template<class _Ty>class heap_allocator : public std::allocator<_Ty>{public: pointer allocate(size_type _N, const void *) {return (pointer) _Charalloc(_N * sizeof(_Ty)); } char _FARQ *_Charalloc(size_type _N) {return (char _FARQ *) g_heap.Alloc(_N); } void deallocate(void _FARQ *_P, size_type) {g_heap.Free(_P); }};
#endif // _MEM_H_
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