You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
86 lines
1.6 KiB
86 lines
1.6 KiB
///////////////////////////////////////////////////////////////////////////////
|
|
//
|
|
// Copyright (c) 1997, Microsoft Corp. All rights reserved.
|
|
//
|
|
// FILE
|
|
//
|
|
// newop.cpp
|
|
//
|
|
// SYNOPSIS
|
|
//
|
|
// Implmentation of the global new and delete operators.
|
|
//
|
|
// MODIFICATION HISTORY
|
|
//
|
|
// 08/19/1997 Original version.
|
|
//
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
|
|
#ifndef _NEWOP_CPP_
|
|
#define _NEWOP_CPP_
|
|
|
|
#include <cstdlib>
|
|
#include <new>
|
|
|
|
//////////
|
|
// CRT function that calls the new handler directly.
|
|
//////////
|
|
extern "C" int __cdecl _callnewh(size_t);
|
|
|
|
|
|
//////////
|
|
// Standard new operator.
|
|
//////////
|
|
void* __cdecl operator new(size_t size) throw (std::bad_alloc)
|
|
{
|
|
void* p;
|
|
|
|
// Loop until either we get the memory or the new handler fails.
|
|
while ((p = malloc(size)) == 0)
|
|
{
|
|
if (!_callnewh(size))
|
|
{
|
|
throw std::bad_alloc();
|
|
}
|
|
}
|
|
|
|
return p;
|
|
}
|
|
|
|
|
|
//////////
|
|
// "No throw" version of the new operator.
|
|
//////////
|
|
void* __cdecl operator new(size_t size, const std::nothrow_t&) throw ()
|
|
{
|
|
void* p;
|
|
|
|
// Loop until either we get the memory or the new handler fails.
|
|
while ((p = malloc(size)) == 0)
|
|
{
|
|
if (!_callnewh(size))
|
|
{
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
return p;
|
|
}
|
|
|
|
|
|
//////////
|
|
// Delete operator.
|
|
//////////
|
|
void __cdecl operator delete(void *p) throw()
|
|
{
|
|
#ifdef DEBUG
|
|
// Clobber the memory.
|
|
if (p) memset(p, 0xA3, _msize(p));
|
|
#endif
|
|
|
|
// The MSVC free() handles null pointers, so we don't have to check.
|
|
free(p);
|
|
}
|
|
|
|
|
|
#endif // _NEWOP_CPP_
|