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/*
* InspIRCd -- Internet Relay Chat Daemon
*
* Copyright (C) 2007 Dennis Friis <peavey@inspircd.org>
*
* This file is part of InspIRCd. InspIRCd is free software: you can
* redistribute it and/or modify it under the terms of the GNU General Public
* License as published by the Free Software Foundation, version 2.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "inspircd_win32wrapper.h"
#include <exception>
#include <new>
#include <new.h>
/** On windows, all dll files and executables have their own private heap,
* whereas on POSIX systems, shared objects loaded into an executable share
* the executable's heap. This means that if we pass an arbitrary pointer to
* a windows DLL which is not allocated in that dll, without some form of
* marshalling, we get a page fault. To fix this, these overrided operators
* new and delete use the windows HeapAlloc and HeapFree functions to claim
* memory from the windows global heap. This makes windows 'act like' POSIX
* when it comes to memory usage between dlls and exes.
*/
void * ::operator new(size_t iSize)
{
void* ptr = HeapAlloc(GetProcessHeap(), 0, iSize); /* zero memory for unix compatibility */
/* This is the correct behaviour according to C++ standards for out of memory,
* not returning null -- Brain
*/
if (!ptr)
throw std::bad_alloc();
else
return ptr;
}
void ::operator delete(void * ptr)
{
if (ptr)
HeapFree(GetProcessHeap(), 0, ptr);
}
void * operator new[] (size_t iSize) {
void* ptr = HeapAlloc(GetProcessHeap(), 0, iSize); /* Why were we initializing the memory to zeros here? This is just a waste of cpu! */
if (!ptr)
throw std::bad_alloc();
else
return ptr;
}
void operator delete[] (void* ptr)
{
if (ptr)
HeapFree(GetProcessHeap(), 0, ptr);
}
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