mirror of git://git.acid.vegas/anope.git
65 lines
1.8 KiB
C++
65 lines
1.8 KiB
C++
/* +------------------------------------+
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* | Inspire Internet Relay Chat Daemon |
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* +------------------------------------+
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*
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* InspIRCd: (C) 2002-2011 InspIRCd Development Team
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* See: https://wiki.inspircd.org/Credits
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*
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* This program is free but copyrighted software; see
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* the file COPYING for details.
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*
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* ---------------------------------------------------
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*/
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#ifdef _WIN32
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#include <windows.h>
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#include <exception>
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#include <new>
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#include <new.h>
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/** On windows, all dll files and executables have their own private heap,
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* whereas on POSIX systems, shared objects loaded into an executable share
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* the executable's heap. This means that if we pass an arbitrary pointer to
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* a windows DLL which is not allocated in that dll, without some form of
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* marshalling, we get a page fault. To fix this, these overrided operators
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* new and delete use the windows HeapAlloc and HeapFree functions to claim
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* memory from the windows global heap. This makes windows 'act like' POSIX
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* when it comes to memory usage between dlls and exes.
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*/
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void *::operator new(size_t iSize)
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{
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void *ptr = HeapAlloc(GetProcessHeap(), 0, iSize); /* zero memory for unix compatibility */
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/* This is the correct behaviour according to C++ standards for out of memory,
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* not returning null -- Brain
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*/
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if (!ptr)
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throw std::bad_alloc();
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else
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return ptr;
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}
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void ::operator delete(void *ptr)
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{
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if (ptr)
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HeapFree(GetProcessHeap(), 0, ptr);
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}
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void *operator new[](size_t iSize)
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{
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void *ptr = HeapAlloc(GetProcessHeap(), 0, iSize); /* Why were we initializing the memory to zeros here? This is just a waste of cpu! */
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if (!ptr)
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throw std::bad_alloc();
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else
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return ptr;
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}
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void operator delete[](void *ptr)
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{
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if (ptr)
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HeapFree(GetProcessHeap(), 0, ptr);
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}
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#endif
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