1HEADmaster

1 files changed, 1955 insertions, 0 deletions

diff --git a/tier0/memdbg.cpp b/tier0/memdbg.cpp
new file mode 100644
index 0000000..ef23e9a
--- /dev/null
+++ b/tier0/memdbg.cpp
@@ -0,0 +1,1955 @@
+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: Memory allocation!
+//
+// $NoKeywords: $
+//=============================================================================//
+
+
+#include "pch_tier0.h"
+
+#if !defined(STEAM) && !defined(NO_MALLOC_OVERRIDE)
+
+#include <malloc.h>
+#include <string.h>
+#include "tier0/dbg.h"
+#include "tier0/memalloc.h"
+#include "mem_helpers.h"
+#ifdef _WIN32
+#include <crtdbg.h>
+#endif
+#ifdef OSX
+#include <malloc/malloc.h>
+#include <mach/mach.h>
+#include <stdlib.h>
+#endif
+
+#include <map>
+#include <set>
+#include <limits.h>
+#include "tier0/threadtools.h"
+#ifdef _X360
+#include "xbox/xbox_console.h"
+#endif
+#if ( !defined(_DEBUG) && defined(USE_MEM_DEBUG) )
+#pragma message ("USE_MEM_DEBUG is enabled in a release build. Don't check this in!")
+#endif
+#if (defined(_DEBUG) || defined(USE_MEM_DEBUG))
+
+#if defined(_WIN32) && ( !defined(_X360) && !defined(_WIN64) )
+// #define USE_STACK_WALK
+// or:
+// #define USE_STACK_WALK_DETAILED
+#endif
+
+//-----------------------------------------------------------------------------
+
+#ifndef _X360
+#define DebugAlloc	malloc
+#define DebugFree	free
+#else
+#define DebugAlloc	DmAllocatePool
+#define DebugFree	DmFreePool
+#endif
+
+#ifdef WIN32
+int g_DefaultHeapFlags = _CrtSetDbgFlag( _CrtSetDbgFlag(_CRTDBG_REPORT_FLAG) | _CRTDBG_ALLOC_MEM_DF );
+#endif
+
+#if defined( _MEMTEST )
+static char s_szStatsMapName[32];
+static char s_szStatsComment[256];
+#endif
+
+//-----------------------------------------------------------------------------
+
+#if defined( USE_STACK_WALK ) || defined( USE_STACK_WALK_DETAILED )
+#include <dbghelp.h>
+
+#pragma comment(lib, "Dbghelp.lib" )
+
+#pragma auto_inline(off)
+__declspec(naked) DWORD GetEIP()
+{
+	__asm 
+	{
+		mov eax, [ebp + 4]
+		ret
+	}
+}
+
+int WalkStack( void **ppAddresses, int nMaxAddresses, int nSkip = 0 )
+{
+	HANDLE hProcess = GetCurrentProcess();
+	HANDLE hThread = GetCurrentThread();
+
+	STACKFRAME64 frame;
+
+	memset(&frame, 0, sizeof(frame));
+	DWORD valEsp, valEbp;
+	__asm
+	{
+		mov [valEsp], esp;
+		mov [valEbp], ebp
+	}
+	frame.AddrPC.Offset    = GetEIP();
+	frame.AddrStack.Offset = valEsp;
+	frame.AddrFrame.Offset = valEbp;
+	frame.AddrPC.Mode      = AddrModeFlat;
+	frame.AddrStack.Mode   = AddrModeFlat;
+	frame.AddrFrame.Mode   = AddrModeFlat;
+
+	// Walk the stack.
+	int nWalked = 0;
+	nSkip++;
+	while ( nMaxAddresses - nWalked > 0 ) 
+	{
+		if ( !StackWalk64(IMAGE_FILE_MACHINE_I386, hProcess, hThread, &frame, NULL, NULL, SymFunctionTableAccess64, SymGetModuleBase64, NULL ) ) 
+		{
+			break;
+		}
+
+		if ( nSkip == 0 )
+		{
+			if (frame.AddrFrame.Offset == 0) 
+			{
+				// End of stack.
+				break;
+			}
+
+			*ppAddresses++ = (void *)frame.AddrPC.Offset;
+			nWalked++;
+			
+			if (frame.AddrPC.Offset == frame.AddrReturn.Offset)
+			{
+				// Catching a stack loop
+				break;
+			}
+		}
+		else
+		{
+			nSkip--;
+		}
+	}
+
+	if ( nMaxAddresses )
+	{
+		memset( ppAddresses, 0, ( nMaxAddresses - nWalked ) * sizeof(*ppAddresses) );
+	}
+
+	return nWalked;
+}
+
+bool GetModuleFromAddress( void *address, char *pResult )
+{
+	IMAGEHLP_MODULE   moduleInfo;
+
+	moduleInfo.SizeOfStruct = sizeof(moduleInfo);
+
+	if ( SymGetModuleInfo( GetCurrentProcess(), (DWORD)address, &moduleInfo ) )
+	{
+		strcpy( pResult, moduleInfo.ModuleName );
+		return true;
+	}
+
+	return false;
+}
+
+bool GetCallerModule( char *pDest )
+{
+	static bool bInit;
+	if ( !bInit )
+	{
+		PSTR psUserSearchPath = NULL;
+		psUserSearchPath = "u:\\data\\game\\bin\\;u:\\data\\game\\episodic\\bin\\;u:\\data\\game\\hl2\\bin\\;\\\\perforce\\symbols";
+		SymInitialize( GetCurrentProcess(), psUserSearchPath, true );
+		bInit = true;
+	}
+	void *pCaller;
+	WalkStack( &pCaller, 1, 2 );
+
+	return ( pCaller != 0 && GetModuleFromAddress( pCaller, pDest ) );
+}
+
+
+#if defined( USE_STACK_WALK_DETAILED )
+
+//
+// Note: StackDescribe function is non-reentrant:
+//		Reason:   Stack description is stored in a static buffer.
+//		Solution: Passing caller-allocated buffers would allow the
+//		function to become reentrant, however the current only client (FindOrCreateFilename)
+//		is synchronized with a heap mutex, after retrieving stack description the
+//		heap memory will be allocated to copy the text.
+//
+
+char * StackDescribe( void **ppAddresses, int nMaxAddresses )
+{
+	static char s_chStackDescription[ 32 * 1024 ];
+	static char s_chSymbolBuffer[ sizeof( IMAGEHLP_SYMBOL64 ) + 1024 ];
+	
+	IMAGEHLP_SYMBOL64 &hlpSymbol = * ( IMAGEHLP_SYMBOL64 * ) s_chSymbolBuffer;
+	hlpSymbol.SizeOfStruct = sizeof( IMAGEHLP_SYMBOL64 );
+	hlpSymbol.MaxNameLength = 1024;
+	DWORD64 hlpSymbolOffset = 0;
+
+	IMAGEHLP_LINE64 hlpLine;
+	hlpLine.SizeOfStruct = sizeof( IMAGEHLP_LINE64 );
+	DWORD hlpLineOffset = 0;
+
+	s_chStackDescription[ 0 ] = 0;
+	char *pchBuffer = s_chStackDescription;
+
+	for ( int k = 0; k < nMaxAddresses; ++ k )
+	{
+		if ( !ppAddresses[k] )
+			break;
+
+		pchBuffer += strlen( pchBuffer );
+		if ( SymGetLineFromAddr64( GetCurrentProcess(), ( DWORD64 ) ppAddresses[k], &hlpLineOffset, &hlpLine ) )
+		{
+			char const *pchFileName = hlpLine.FileName ? hlpLine.FileName + strlen( hlpLine.FileName ) : NULL;
+			for ( size_t numSlashesAllowed = 2; pchFileName > hlpLine.FileName; -- pchFileName )
+			{
+				if ( *pchFileName == '\\' )
+				{
+					if ( numSlashesAllowed -- )
+						continue;
+					else
+						break;
+				}
+			}
+			sprintf( pchBuffer, hlpLineOffset ? "%s:%d+0x%I32X" : "%s:%d", pchFileName, hlpLine.LineNumber, hlpLineOffset );
+		}
+		else if ( SymGetSymFromAddr64( GetCurrentProcess(), ( DWORD64 ) ppAddresses[k], &hlpSymbolOffset, &hlpSymbol ) )
+		{
+			sprintf( pchBuffer, ( hlpSymbolOffset > 0 && !( hlpSymbolOffset >> 63 ) ) ? "%s+0x%I64X" : "%s", hlpSymbol.Name, hlpSymbolOffset );
+		}
+		else
+		{
+			sprintf( pchBuffer, "#0x%08p", ppAddresses[k] );
+		}
+
+		pchBuffer += strlen( pchBuffer );
+		sprintf( pchBuffer, "<--" );
+	}
+	*pchBuffer  = 0;
+
+	return s_chStackDescription;
+}
+
+#endif // #if defined( USE_STACK_WALK_DETAILED )
+
+#else
+
+inline int WalkStack( void **ppAddresses, int nMaxAddresses, int nSkip = 0 )
+{
+	memset( ppAddresses, 0, nMaxAddresses * sizeof(*ppAddresses) );
+	return 0;
+}
+#define GetModuleFromAddress( address, pResult ) ( ( *pResult = 0 ), 0)
+#define GetCallerModule( pDest ) false
+#endif
+
+
+//-----------------------------------------------------------------------------
+
+// NOTE: This exactly mirrors the dbg header in the MSDEV crt
+// eventually when we write our own allocator, we can kill this
+struct CrtDbgMemHeader_t
+{
+	unsigned char m_Reserved[8];
+	const char *m_pFileName;
+	int			m_nLineNumber;
+	unsigned char m_Reserved2[16];
+};
+
+struct DbgMemHeader_t
+#if !defined( _DEBUG ) || defined( POSIX )
+	: CrtDbgMemHeader_t
+#endif
+{
+	unsigned nLogicalSize;
+	byte reserved[12];	// MS allocator always returns mem aligned on 16 bytes, which some of our code depends on
+};
+
+//-----------------------------------------------------------------------------
+
+#if defined( _DEBUG ) && !defined( POSIX )
+#define GetCrtDbgMemHeader( pMem ) ((CrtDbgMemHeader_t*)((DbgMemHeader_t*)pMem - 1) - 1)
+#elif defined( OSX )
+DbgMemHeader_t *GetCrtDbgMemHeader( void *pMem );
+#else
+#define GetCrtDbgMemHeader( pMem ) ((DbgMemHeader_t*)pMem - 1)
+#endif
+
+#ifdef OSX
+DbgMemHeader_t *GetCrtDbgMemHeader( void *pMem )
+{
+	size_t msize = malloc_size( pMem );
+	return (DbgMemHeader_t *)( (char *)pMem + msize - sizeof(DbgMemHeader_t) );
+}
+#endif
+
+inline void *InternalMalloc( size_t nSize, const char *pFileName, int nLine )
+{
+#ifdef OSX
+	void *pAllocedMem = malloc_zone_malloc( malloc_default_zone(), nSize + sizeof(DbgMemHeader_t) );
+	if (!pAllocedMem)
+	{
+		return NULL;
+	}
+	DbgMemHeader_t *pInternalMem = GetCrtDbgMemHeader( pAllocedMem );
+
+	pInternalMem->m_pFileName = pFileName;
+	pInternalMem->m_nLineNumber = nLine;
+	pInternalMem->nLogicalSize = nSize;
+	*((int*)pInternalMem->m_Reserved) = 0xf00df00d;
+
+	return pAllocedMem;
+#else // LINUX || WIN32
+	DbgMemHeader_t *pInternalMem;
+#if defined( POSIX ) || !defined( _DEBUG )
+	pInternalMem = (DbgMemHeader_t *)malloc( nSize + sizeof(DbgMemHeader_t) );
+	if (!pInternalMem)
+	{
+		return NULL;
+	}
+	pInternalMem->m_pFileName = pFileName;
+	pInternalMem->m_nLineNumber = nLine;
+	*((int*)pInternalMem->m_Reserved) = 0xf00df00d;
+#else
+	pInternalMem = (DbgMemHeader_t *)_malloc_dbg( nSize + sizeof(DbgMemHeader_t), _NORMAL_BLOCK, pFileName, nLine );
+#endif // defined( POSIX ) || !defined( _DEBUG )
+
+	pInternalMem->nLogicalSize = nSize;
+	return pInternalMem + 1;
+#endif // LINUX || WIN32
+}
+
+inline void *InternalRealloc( void *pMem, size_t nNewSize, const char *pFileName, int nLine )
+{
+	if ( !pMem )
+		return InternalMalloc( nNewSize, pFileName, nLine );
+
+#ifdef OSX
+	void *pNewAllocedMem = NULL;
+
+	pNewAllocedMem = (void *)malloc_zone_realloc( malloc_default_zone(), pMem, nNewSize + sizeof(DbgMemHeader_t) );
+	DbgMemHeader_t *pInternalMem = GetCrtDbgMemHeader( pNewAllocedMem );
+
+	pInternalMem->m_pFileName = pFileName;
+	pInternalMem->m_nLineNumber = nLine;
+	pInternalMem->nLogicalSize = static_cast<unsigned int>( nNewSize );
+	*((int*)pInternalMem->m_Reserved) = 0xf00df00d;
+
+	return pNewAllocedMem;
+#else // LINUX || WIN32
+	DbgMemHeader_t *pInternalMem = (DbgMemHeader_t *)pMem - 1;
+#if defined( POSIX ) || !defined( _DEBUG )
+	pInternalMem = (DbgMemHeader_t *)realloc( pInternalMem, nNewSize + sizeof(DbgMemHeader_t) );
+	pInternalMem->m_pFileName = pFileName;
+	pInternalMem->m_nLineNumber = nLine;
+#else
+	pInternalMem = (DbgMemHeader_t *)_realloc_dbg( pInternalMem, nNewSize + sizeof(DbgMemHeader_t), _NORMAL_BLOCK, pFileName, nLine );
+#endif
+
+	pInternalMem->nLogicalSize = nNewSize;
+	return pInternalMem + 1;
+#endif // LINUX || WIN32
+}
+
+inline void InternalFree( void *pMem )
+{
+	if ( !pMem )
+		return;
+
+	DbgMemHeader_t *pInternalMem = (DbgMemHeader_t *)pMem - 1;
+#if !defined( _DEBUG ) || defined( POSIX )
+#ifdef OSX
+	malloc_zone_free( malloc_default_zone(), pMem );
+#elif LINUX
+	free( pInternalMem );
+#else
+	free( pInternalMem );	
+#endif
+#else
+	_free_dbg( pInternalMem, _NORMAL_BLOCK );
+#endif
+}
+
+inline size_t InternalMSize( void *pMem )
+{
+	//$ TODO. For Linux, we could use 'int size = malloc_usable_size( pMem )'...
+#if defined(POSIX)
+	DbgMemHeader_t *pInternalMem = GetCrtDbgMemHeader( pMem );
+	return pInternalMem->nLogicalSize;
+#elif !defined(_DEBUG)
+	DbgMemHeader_t *pInternalMem = GetCrtDbgMemHeader( pMem );
+	return _msize( pInternalMem ) - sizeof(DbgMemHeader_t);
+#else
+	DbgMemHeader_t *pInternalMem = (DbgMemHeader_t *)pMem - 1;
+	return _msize_dbg( pInternalMem, _NORMAL_BLOCK ) - sizeof(DbgMemHeader_t);
+#endif	
+}
+
+inline size_t InternalLogicalSize( void *pMem )
+{
+#if defined(POSIX)
+	DbgMemHeader_t *pInternalMem = GetCrtDbgMemHeader( pMem );
+#elif !defined(_DEBUG)
+	DbgMemHeader_t *pInternalMem = (DbgMemHeader_t *)pMem - 1;
+#else
+	DbgMemHeader_t *pInternalMem = (DbgMemHeader_t *)pMem - 1;
+#endif
+	return pInternalMem->nLogicalSize;
+}
+
+#ifndef _DEBUG
+#define _CrtDbgReport( nRptType, szFile, nLine, szModule, pMsg ) 0
+#endif
+
+
+//-----------------------------------------------------------------------------
+
+
+// Custom allocator protects this module from recursing on operator new
+template <class T>
+class CNoRecurseAllocator
+{
+public:
+	// type definitions
+	typedef T        value_type;
+	typedef T*       pointer;
+	typedef const T* const_pointer;
+	typedef T&       reference;
+	typedef const T& const_reference;
+	typedef std::size_t    size_type;
+	typedef std::ptrdiff_t difference_type;
+
+	CNoRecurseAllocator() {}
+	CNoRecurseAllocator(const CNoRecurseAllocator&) {}
+	template <class U> CNoRecurseAllocator(const CNoRecurseAllocator<U>&) {}
+	~CNoRecurseAllocator(){}
+
+	// rebind allocator to type U
+	template <class U > struct rebind { typedef CNoRecurseAllocator<U> other; };
+
+	// return address of values
+	pointer address (reference value) const { return &value; }
+
+	const_pointer address (const_reference value) const { return &value;}
+	size_type max_size() const { return INT_MAX; }
+
+	pointer allocate(size_type num, const void* = 0)  { return (pointer)DebugAlloc(num * sizeof(T)); }
+	void deallocate (pointer p, size_type num) { DebugFree(p); }
+	void construct(pointer p, const T& value) {	new((void*)p)T(value); }
+	void destroy (pointer p) { p->~T(); }
+};
+
+template <class T1, class T2>
+bool operator==(const CNoRecurseAllocator<T1>&, const CNoRecurseAllocator<T2>&)
+{
+	return true;
+}
+
+template <class T1, class T2>
+bool operator!=(const CNoRecurseAllocator<T1>&, const CNoRecurseAllocator<T2>&)
+{
+	return false;
+}
+
+class CStringLess
+{
+public:
+	bool operator()(const char *pszLeft, const char *pszRight ) const 
+	{
+		return ( stricmp( pszLeft, pszRight ) < 0 );
+	}
+};
+
+//-----------------------------------------------------------------------------
+
+#pragma warning( disable:4074 ) // warning C4074: initializers put in compiler reserved initialization area
+#pragma init_seg( compiler )
+
+//-----------------------------------------------------------------------------
+// NOTE! This should never be called directly from leaf code
+// Just use new,delete,malloc,free etc. They will call into this eventually
+//-----------------------------------------------------------------------------
+class CDbgMemAlloc : public IMemAlloc
+{
+public:
+	CDbgMemAlloc();
+	virtual ~CDbgMemAlloc();
+
+	// Release versions
+	virtual void *Alloc( size_t nSize );
+	virtual void *Realloc( void *pMem, size_t nSize );
+	virtual void  Free( void *pMem );
+    virtual void *Expand_NoLongerSupported( void *pMem, size_t nSize );
+
+	// Debug versions
+    virtual void *Alloc( size_t nSize, const char *pFileName, int nLine );
+    virtual void *Realloc( void *pMem, size_t nSize, const char *pFileName, int nLine );
+    virtual void  Free( void *pMem, const char *pFileName, int nLine );
+    virtual void *Expand_NoLongerSupported( void *pMem, size_t nSize, const char *pFileName, int nLine );
+
+	// Returns size of a particular allocation
+	virtual size_t GetSize( void *pMem );
+
+    // Force file + line information for an allocation
+    virtual void PushAllocDbgInfo( const char *pFileName, int nLine );
+    virtual void PopAllocDbgInfo();
+
+	virtual long CrtSetBreakAlloc( long lNewBreakAlloc );
+	virtual	int CrtSetReportMode( int nReportType, int nReportMode );
+	virtual int CrtIsValidHeapPointer( const void *pMem );
+	virtual int CrtIsValidPointer( const void *pMem, unsigned int size, int access );
+	virtual int CrtCheckMemory( void );
+	virtual int CrtSetDbgFlag( int nNewFlag );
+	virtual void CrtMemCheckpoint( _CrtMemState *pState );
+
+	// handles storing allocation info for coroutines
+	virtual uint32 GetDebugInfoSize();
+	virtual void SaveDebugInfo( void *pvDebugInfo );
+	virtual void RestoreDebugInfo( const void *pvDebugInfo );	
+	virtual void InitDebugInfo( void *pvDebugInfo, const char *pchRootFileName, int nLine );
+
+	// FIXME: Remove when we have our own allocator
+	virtual void* CrtSetReportFile( int nRptType, void* hFile );
+	virtual void* CrtSetReportHook( void* pfnNewHook );
+	virtual int CrtDbgReport( int nRptType, const char * szFile,
+			int nLine, const char * szModule, const char * szFormat );
+
+	virtual int heapchk();
+
+	virtual bool IsDebugHeap() { return true; }
+
+	virtual int GetVersion() { return MEMALLOC_VERSION; }
+
+	virtual void CompactHeap() 
+	{
+#if defined( _X360 ) && defined( _DEBUG )
+		HeapCompact( GetProcessHeap(), 0 );
+#endif
+	}
+
+	virtual MemAllocFailHandler_t SetAllocFailHandler( MemAllocFailHandler_t pfnMemAllocFailHandler ) { return NULL; } // debug heap doesn't attempt retries
+
+#if defined( _MEMTEST )
+	void SetStatsExtraInfo( const char *pMapName, const char *pComment )
+	{
+		strncpy( s_szStatsMapName, pMapName, sizeof( s_szStatsMapName ) );
+		s_szStatsMapName[sizeof( s_szStatsMapName ) - 1] = '\0';
+
+		strncpy( s_szStatsComment, pComment, sizeof( s_szStatsComment ) );
+		s_szStatsComment[sizeof( s_szStatsComment ) - 1] = '\0';
+	}
+#endif
+
+	virtual size_t MemoryAllocFailed();
+	void		SetCRTAllocFailed( size_t nMemSize );
+
+	enum
+	{
+		BYTE_COUNT_16 = 0,
+		BYTE_COUNT_32,
+		BYTE_COUNT_128,
+		BYTE_COUNT_1024,
+		BYTE_COUNT_GREATER,
+
+		NUM_BYTE_COUNT_BUCKETS
+	};
+
+	void Shutdown();
+
+private:
+	struct MemInfo_t
+	{
+		MemInfo_t()
+		{
+			memset( this, 0, sizeof(*this) );
+		}
+
+		// Size in bytes
+		size_t m_nCurrentSize;
+		size_t m_nPeakSize;
+		size_t m_nTotalSize;
+		size_t m_nOverheadSize;
+		size_t m_nPeakOverheadSize;
+
+		// Count in terms of # of allocations
+		size_t m_nCurrentCount;
+		size_t m_nPeakCount;
+		size_t m_nTotalCount;
+
+		// Count in terms of # of allocations of a particular size
+		size_t m_pCount[NUM_BYTE_COUNT_BUCKETS];
+
+		// Time spent allocating + deallocating	(microseconds)
+		int64 m_nTime;
+	};
+
+	struct MemInfoKey_t
+	{
+		MemInfoKey_t( const char *pFileName, int line ) : m_pFileName(pFileName), m_nLine(line) {}
+		bool operator<( const MemInfoKey_t &key ) const
+		{
+			int iret = stricmp( m_pFileName, key.m_pFileName );
+			if ( iret < 0 )
+				return true;
+
+			if ( iret > 0 )
+				return false;
+
+			return m_nLine < key.m_nLine;
+		}
+
+		const char *m_pFileName;
+		int			m_nLine;
+	};
+
+	// NOTE: Deliberately using STL here because the UTL stuff
+	// is a client of this library; want to avoid circular dependency
+
+	// Maps file name to info
+	typedef std::map< MemInfoKey_t, MemInfo_t, std::less<MemInfoKey_t>, CNoRecurseAllocator<std::pair<const MemInfoKey_t, MemInfo_t> > > StatMap_t;
+	typedef StatMap_t::iterator StatMapIter_t;
+	typedef StatMap_t::value_type StatMapEntry_t;
+
+	typedef std::set<const char *, CStringLess, CNoRecurseAllocator<const char *> > Filenames_t;
+
+	// Heap reporting method
+	typedef void (*HeapReportFunc_t)( char const *pFormat, ... );
+
+private:
+	// Returns the actual debug info
+	void GetActualDbgInfo( const char *&pFileName, int &nLine );
+
+	void Initialize();
+
+	// Finds the file in our map
+	MemInfo_t &FindOrCreateEntry( const char *pFileName, int line );
+	const char *FindOrCreateFilename( const char *pFileName );
+
+	// Updates stats
+	void RegisterAllocation( const char *pFileName, int nLine, int nLogicalSize, int nActualSize, unsigned nTime );
+	void RegisterDeallocation( const char *pFileName, int nLine, int nLogicalSize, int nActualSize, unsigned nTime );
+
+	void RegisterAllocation( MemInfo_t &info, int nLogicalSize, int nActualSize, unsigned nTime );
+	void RegisterDeallocation( MemInfo_t &info, int nLogicalSize, int nActualSize, unsigned nTime );
+
+	// Gets the allocation file name
+	const char *GetAllocatonFileName( void *pMem );
+	int GetAllocatonLineNumber( void *pMem );
+
+	// FIXME: specify a spew output func for dumping stats
+	// Stat output
+	void DumpMemInfo( const char *pAllocationName, int line, const MemInfo_t &info );
+	void DumpFileStats();
+	void DumpStats();
+	void DumpStatsFileBase( char const *pchFileBase );
+	void DumpBlockStats( void *p );
+	virtual void GlobalMemoryStatus( size_t *pUsedMemory, size_t *pFreeMemory );
+
+private:
+	StatMap_t *m_pStatMap;
+	MemInfo_t m_GlobalInfo;
+	CFastTimer m_Timer;
+	bool		m_bInitialized;
+	Filenames_t *m_pFilenames;
+
+	HeapReportFunc_t m_OutputFunc;
+
+	static int s_pCountSizes[NUM_BYTE_COUNT_BUCKETS];
+	static const char *s_pCountHeader[NUM_BYTE_COUNT_BUCKETS];
+
+	size_t				m_sMemoryAllocFailed;
+};
+
+static char const *g_pszUnknown = "unknown";
+
+//-----------------------------------------------------------------------------
+
+const int DBG_INFO_STACK_DEPTH = 32;
+
+struct DbgInfoStack_t
+{
+	const char *m_pFileName;
+	int m_nLine;
+};
+
+CThreadLocalPtr<DbgInfoStack_t> g_DbgInfoStack CONSTRUCT_EARLY;
+CThreadLocalInt<>				g_nDbgInfoStackDepth CONSTRUCT_EARLY;
+
+//-----------------------------------------------------------------------------
+// Singleton...
+//-----------------------------------------------------------------------------
+static CDbgMemAlloc s_DbgMemAlloc CONSTRUCT_EARLY;
+
+#ifndef TIER0_VALIDATE_HEAP
+IMemAlloc *g_pMemAlloc = &s_DbgMemAlloc;
+#else
+IMemAlloc *g_pActualAlloc = &s_DbgMemAlloc;
+#endif
+
+//-----------------------------------------------------------------------------
+
+CThreadMutex g_DbgMemMutex CONSTRUCT_EARLY;
+
+#define HEAP_LOCK() AUTO_LOCK( g_DbgMemMutex )
+
+
+//-----------------------------------------------------------------------------
+// Byte count buckets
+//-----------------------------------------------------------------------------
+int CDbgMemAlloc::s_pCountSizes[CDbgMemAlloc::NUM_BYTE_COUNT_BUCKETS] = 
+{
+	16, 32, 128, 1024, INT_MAX
+};
+
+const char *CDbgMemAlloc::s_pCountHeader[CDbgMemAlloc::NUM_BYTE_COUNT_BUCKETS] = 
+{
+	"<=16 byte allocations", 
+	"17-32 byte allocations",
+	"33-128 byte allocations", 
+	"129-1024 byte allocations",
+	">1024 byte allocations"
+};
+
+//-----------------------------------------------------------------------------
+// Standard output
+//-----------------------------------------------------------------------------
+static FILE* s_DbgFile;
+
+static void DefaultHeapReportFunc( char const *pFormat, ... )
+{
+	va_list args;
+	va_start( args, pFormat );
+	vfprintf( s_DbgFile, pFormat, args );
+	va_end( args );
+}
+
+//-----------------------------------------------------------------------------
+// Constructor
+//-----------------------------------------------------------------------------
+CDbgMemAlloc::CDbgMemAlloc() : m_sMemoryAllocFailed( (size_t)0 )
+{
+	// Make sure that we return 64-bit addresses in 64-bit builds.
+	ReserveBottomMemory();
+
+	m_OutputFunc = DefaultHeapReportFunc;
+	m_bInitialized = false;
+
+	if ( !IsDebug() && !IsX360() )
+	{
+		Plat_DebugString( "USE_MEM_DEBUG is enabled in a release build. Don't check this in!\n" );
+	}
+}
+
+CDbgMemAlloc::~CDbgMemAlloc()
+{
+	Shutdown();
+}
+
+
+void CDbgMemAlloc::Initialize()
+{
+	if ( !m_bInitialized )
+	{
+		m_pFilenames = new Filenames_t;
+		m_pStatMap= new StatMap_t;
+		m_bInitialized = true;
+	}
+}
+
+
+//-----------------------------------------------------------------------------
+// Release versions
+//-----------------------------------------------------------------------------
+void CDbgMemAlloc::Shutdown()
+{
+	if ( m_bInitialized )
+	{
+		Filenames_t::const_iterator iter = m_pFilenames->begin();
+		while ( iter != m_pFilenames->end() )
+		{
+			char *pFileName = (char*)(*iter);
+			free( pFileName );
+			iter++;
+		}
+		m_pFilenames->clear();
+
+		m_bInitialized = false;
+
+		delete m_pFilenames;
+		m_pFilenames = nullptr;
+
+		delete m_pStatMap;
+		m_pStatMap = nullptr;
+	}
+
+	m_bInitialized = false;
+}
+
+
+#ifdef WIN32
+extern "C" BOOL APIENTRY MemDbgDllMain( HMODULE hDll, DWORD dwReason, PVOID pvReserved )
+{
+	UNREFERENCED_PARAMETER( pvReserved );
+
+	// Check if we are shutting down
+	if ( dwReason == DLL_PROCESS_DETACH )
+	{
+		// CDbgMemAlloc is a global object and destructs after the _Lockit object in the CRT runtime,
+		//  so we can't actually operate on the STL object in a normal destructor here as its support libraries have been turned off already
+		s_DbgMemAlloc.Shutdown();
+	}
+
+	return TRUE;
+}
+#endif
+
+
+//-----------------------------------------------------------------------------
+// Release versions
+//-----------------------------------------------------------------------------
+
+void *CDbgMemAlloc::Alloc( size_t nSize )
+{
+/*
+	// NOTE: Uncomment this to find unknown allocations
+	const char *pFileName = g_pszUnknown;
+	int nLine;
+	GetActualDbgInfo( pFileName, nLine );
+	if (pFileName == g_pszUnknown)
+	{
+		int x = 3;
+	}
+*/
+	char szModule[MAX_PATH];
+	if ( GetCallerModule( szModule ) )
+	{
+		return Alloc( nSize, szModule, 0 );
+	}
+	else
+	{
+		return Alloc( nSize, g_pszUnknown, 0 );
+	}
+//	return malloc( nSize );
+}
+
+void *CDbgMemAlloc::Realloc( void *pMem, size_t nSize )
+{
+/*
+	// NOTE: Uncomment this to find unknown allocations
+	const char *pFileName = g_pszUnknown;
+	int nLine;
+	GetActualDbgInfo( pFileName, nLine );
+	if (pFileName == g_pszUnknown)
+	{
+		int x = 3;
+	}
+*/
+	// FIXME: Should these gather stats?
+	char szModule[MAX_PATH];
+	if ( GetCallerModule( szModule ) )
+	{
+		return Realloc( pMem, nSize, szModule, 0 );
+	}
+	else
+	{
+		return Realloc( pMem, nSize, g_pszUnknown, 0 );
+	}
+//	return realloc( pMem, nSize );
+}
+
+void CDbgMemAlloc::Free( void *pMem )
+{
+	// FIXME: Should these gather stats?
+	Free( pMem, g_pszUnknown, 0 );
+//	free( pMem );
+}
+
+void *CDbgMemAlloc::Expand_NoLongerSupported( void *pMem, size_t nSize )
+{
+	return NULL;
+}
+
+
+//-----------------------------------------------------------------------------
+// Force file + line information for an allocation
+//-----------------------------------------------------------------------------
+void CDbgMemAlloc::PushAllocDbgInfo( const char *pFileName, int nLine )
+{
+	if ( g_DbgInfoStack == NULL )
+	{
+		g_DbgInfoStack = (DbgInfoStack_t *)DebugAlloc( sizeof(DbgInfoStack_t) * DBG_INFO_STACK_DEPTH );
+		g_nDbgInfoStackDepth = -1;
+	}
+
+	++g_nDbgInfoStackDepth;
+	Assert( g_nDbgInfoStackDepth < DBG_INFO_STACK_DEPTH );
+	g_DbgInfoStack[g_nDbgInfoStackDepth].m_pFileName = FindOrCreateFilename( pFileName );
+	g_DbgInfoStack[g_nDbgInfoStackDepth].m_nLine = nLine;
+}
+
+void CDbgMemAlloc::PopAllocDbgInfo()
+{
+	if ( g_DbgInfoStack == NULL )
+	{
+		g_DbgInfoStack = (DbgInfoStack_t *)DebugAlloc( sizeof(DbgInfoStack_t) * DBG_INFO_STACK_DEPTH );
+		g_nDbgInfoStackDepth = -1;
+	}
+
+	--g_nDbgInfoStackDepth;
+	Assert( g_nDbgInfoStackDepth >= -1 );
+}
+
+
+//-----------------------------------------------------------------------------
+// handles storing allocation info for coroutines
+//-----------------------------------------------------------------------------
+uint32 CDbgMemAlloc::GetDebugInfoSize()
+{
+	return sizeof( DbgInfoStack_t ) * DBG_INFO_STACK_DEPTH + sizeof( int32 );
+}
+
+void CDbgMemAlloc::SaveDebugInfo( void *pvDebugInfo )
+{
+	if ( g_DbgInfoStack == NULL )
+	{
+		g_DbgInfoStack = (DbgInfoStack_t *)DebugAlloc( sizeof(DbgInfoStack_t) * DBG_INFO_STACK_DEPTH );
+		g_nDbgInfoStackDepth = -1;
+	}
+
+	int32 *pnStackDepth = (int32*) pvDebugInfo;
+	*pnStackDepth = g_nDbgInfoStackDepth;
+	memcpy( pnStackDepth+1, &g_DbgInfoStack[0], sizeof( DbgInfoStack_t ) * DBG_INFO_STACK_DEPTH );
+}
+
+void CDbgMemAlloc::RestoreDebugInfo( const void *pvDebugInfo )
+{
+	if ( g_DbgInfoStack == NULL )
+	{
+		g_DbgInfoStack = (DbgInfoStack_t *)DebugAlloc( sizeof(DbgInfoStack_t) * DBG_INFO_STACK_DEPTH );
+		g_nDbgInfoStackDepth = -1;
+	}
+
+	const int32 *pnStackDepth = (const int32*) pvDebugInfo;
+	g_nDbgInfoStackDepth = *pnStackDepth;
+	memcpy( &g_DbgInfoStack[0], pnStackDepth+1, sizeof( DbgInfoStack_t ) * DBG_INFO_STACK_DEPTH );
+
+}
+
+void CDbgMemAlloc::InitDebugInfo( void *pvDebugInfo, const char *pchRootFileName, int nLine )
+{
+	int32 *pnStackDepth = (int32*) pvDebugInfo;
+
+	if( pchRootFileName )
+	{
+		*pnStackDepth = 0;
+
+		DbgInfoStack_t *pStackRoot = (DbgInfoStack_t *)(pnStackDepth + 1);
+		pStackRoot->m_pFileName = FindOrCreateFilename( pchRootFileName );
+		pStackRoot->m_nLine = nLine;
+	}
+	else
+	{
+		*pnStackDepth = -1;
+	}
+
+}
+
+
+//-----------------------------------------------------------------------------
+// Returns the actual debug info
+//-----------------------------------------------------------------------------
+void CDbgMemAlloc::GetActualDbgInfo( const char *&pFileName, int &nLine )
+{
+#if defined( USE_STACK_WALK_DETAILED )
+	return;
+#endif
+
+	if ( g_DbgInfoStack == NULL )
+	{
+		g_DbgInfoStack = (DbgInfoStack_t *)DebugAlloc( sizeof(DbgInfoStack_t) * DBG_INFO_STACK_DEPTH );
+		g_nDbgInfoStackDepth = -1;
+	}
+
+	if ( g_nDbgInfoStackDepth >= 0 && g_DbgInfoStack[0].m_pFileName)
+	{
+		pFileName = g_DbgInfoStack[0].m_pFileName;
+		nLine = g_DbgInfoStack[0].m_nLine;
+	}
+}
+
+
+//-----------------------------------------------------------------------------
+//
+//-----------------------------------------------------------------------------
+const char *CDbgMemAlloc::FindOrCreateFilename( const char *pFileName )
+{
+	Initialize();
+
+	// If we created it for the first time, actually *allocate* the filename memory
+	HEAP_LOCK();
+	// This is necessary for shutdown conditions: the file name is stored
+	// in some piece of memory in a DLL; if that DLL becomes unloaded,
+	// we'll have a pointer to crap memory
+
+	if ( !pFileName )
+	{
+		pFileName = g_pszUnknown;
+	}
+
+#if defined( USE_STACK_WALK_DETAILED )
+{
+
+	// Walk the stack to determine what's causing the allocation
+	void *arrStackAddresses[ 10 ] = { 0 };
+	int numStackAddrRetrieved = WalkStack( arrStackAddresses, 10, 0 );
+	char *szStack = StackDescribe( arrStackAddresses, numStackAddrRetrieved );
+	if ( szStack && *szStack )
+	{
+		pFileName = szStack;		// Use the stack description for the allocation
+	}
+
+}
+#endif // #if defined( USE_STACK_WALK_DETAILED )
+
+	char *pszFilenameCopy;
+	Filenames_t::const_iterator iter = m_pFilenames->find( pFileName );
+	if ( iter == m_pFilenames->end() )
+	{
+		int nLen = strlen(pFileName) + 1;
+		pszFilenameCopy = (char *)DebugAlloc( nLen );
+		memcpy( pszFilenameCopy, pFileName, nLen );
+		m_pFilenames->insert( pszFilenameCopy );
+	}
+	else
+	{
+		pszFilenameCopy = (char *)(*iter);
+	}
+
+	return pszFilenameCopy;
+}
+
+//-----------------------------------------------------------------------------
+// Finds the file in our map
+//-----------------------------------------------------------------------------
+CDbgMemAlloc::MemInfo_t &CDbgMemAlloc::FindOrCreateEntry( const char *pFileName, int line )
+{
+	Initialize();
+	// Oh how I love crazy STL. retval.first == the StatMapIter_t in the std::pair
+	// retval.first->second == the MemInfo_t that's part of the StatMapIter_t 
+	std::pair<StatMapIter_t, bool> retval;
+	if ( m_pStatMap )
+	{
+		retval = m_pStatMap->insert( StatMapEntry_t( MemInfoKey_t( pFileName, line ), MemInfo_t() ) );
+	}
+	return retval.first->second;
+}
+
+
+//-----------------------------------------------------------------------------
+// Updates stats
+//-----------------------------------------------------------------------------
+void CDbgMemAlloc::RegisterAllocation( const char *pFileName, int nLine, int nLogicalSize, int nActualSize, unsigned nTime )
+{
+	HEAP_LOCK();
+	RegisterAllocation( m_GlobalInfo, nLogicalSize, nActualSize, nTime );
+	RegisterAllocation( FindOrCreateEntry( pFileName, nLine ), nLogicalSize, nActualSize, nTime );
+}
+
+void CDbgMemAlloc::RegisterDeallocation( const char *pFileName, int nLine, int nLogicalSize, int nActualSize, unsigned nTime )
+{
+	HEAP_LOCK();
+	RegisterDeallocation( m_GlobalInfo, nLogicalSize, nActualSize, nTime );
+	RegisterDeallocation( FindOrCreateEntry( pFileName, nLine ), nLogicalSize, nActualSize, nTime );
+}
+
+void CDbgMemAlloc::RegisterAllocation( MemInfo_t &info, int nLogicalSize, int nActualSize, unsigned nTime )
+{
+	++info.m_nCurrentCount;
+	++info.m_nTotalCount;
+	if (info.m_nCurrentCount > info.m_nPeakCount)
+	{
+		info.m_nPeakCount = info.m_nCurrentCount;
+	}
+
+	info.m_nCurrentSize += nLogicalSize;
+	info.m_nTotalSize += nLogicalSize;
+	if (info.m_nCurrentSize > info.m_nPeakSize)
+	{
+		info.m_nPeakSize = info.m_nCurrentSize;
+	}
+
+	for (int i = 0; i < NUM_BYTE_COUNT_BUCKETS; ++i)
+	{
+		if (nLogicalSize <= s_pCountSizes[i])
+		{
+			++info.m_pCount[i];
+			break;
+		}
+	}
+
+	Assert( info.m_nPeakCount >= info.m_nCurrentCount );
+	Assert( info.m_nPeakSize >= info.m_nCurrentSize );
+
+	info.m_nOverheadSize += (nActualSize - nLogicalSize);
+	if (info.m_nOverheadSize > info.m_nPeakOverheadSize)
+	{
+		info.m_nPeakOverheadSize = info.m_nOverheadSize;
+	}
+
+	info.m_nTime += nTime;
+}
+
+void CDbgMemAlloc::RegisterDeallocation( MemInfo_t &info, int nLogicalSize, int nActualSize, unsigned nTime )
+{
+	// Check for decrementing these counters below zero. The checks
+	// must be done here because these unsigned counters will wrap-around and
+	// still be positive.
+	Assert( info.m_nCurrentCount != 0 );
+
+	// It is technically legal for code to request allocations of zero bytes, and there are a number of places in our code
+	// that do. So only assert that nLogicalSize >= 0. http://stackoverflow.com/questions/1087042/c-new-int0-will-it-allocate-memory
+	Assert( nLogicalSize >= 0 );
+	Assert( info.m_nCurrentSize >= (size_t)nLogicalSize );
+	--info.m_nCurrentCount;
+	info.m_nCurrentSize -= nLogicalSize;
+
+	for (int i = 0; i < NUM_BYTE_COUNT_BUCKETS; ++i)
+	{
+		if (nLogicalSize <= s_pCountSizes[i])
+		{
+			--info.m_pCount[i];
+			break;
+		}
+	}
+
+	Assert( info.m_nPeakCount >= info.m_nCurrentCount );
+	Assert( info.m_nPeakSize >= info.m_nCurrentSize );
+
+	info.m_nOverheadSize -= (nActualSize - nLogicalSize);
+
+	info.m_nTime += nTime;
+}
+
+
+//-----------------------------------------------------------------------------
+// Gets the allocation file name
+//-----------------------------------------------------------------------------
+
+const char *CDbgMemAlloc::GetAllocatonFileName( void *pMem )
+{
+	if (!pMem)
+		return "";
+
+	CrtDbgMemHeader_t *pHeader = GetCrtDbgMemHeader( pMem );
+	if ( pHeader->m_pFileName )
+		return pHeader->m_pFileName;
+	else
+		return g_pszUnknown;
+}
+
+//-----------------------------------------------------------------------------
+// Gets the allocation file name
+//-----------------------------------------------------------------------------
+int CDbgMemAlloc::GetAllocatonLineNumber( void *pMem )
+{
+	if ( !pMem )
+		return 0;
+
+	CrtDbgMemHeader_t *pHeader = GetCrtDbgMemHeader( pMem );
+	return pHeader->m_nLineNumber;
+}
+
+//-----------------------------------------------------------------------------
+// Debug versions of the main allocation methods
+//-----------------------------------------------------------------------------
+void *CDbgMemAlloc::Alloc( size_t nSize, const char *pFileName, int nLine )
+{
+	HEAP_LOCK();
+
+	if ( !m_bInitialized )
+		return InternalMalloc( nSize, pFileName, nLine );
+
+	if ( pFileName != g_pszUnknown )
+		pFileName = FindOrCreateFilename( pFileName );
+
+	GetActualDbgInfo( pFileName, nLine );
+
+	/*
+	if ( strcmp( pFileName, "class CUtlVector<int,class CUtlMemory<int> >" ) == 0)
+	{
+		GetActualDbgInfo( pFileName, nLine );
+	}
+	*/
+
+	m_Timer.Start();
+	void *pMem = InternalMalloc( nSize, pFileName, nLine );
+	m_Timer.End();
+
+	ApplyMemoryInitializations( pMem, nSize );
+
+	if ( pMem )
+	{
+		RegisterAllocation( GetAllocatonFileName( pMem ), GetAllocatonLineNumber( pMem ), InternalLogicalSize( pMem ), InternalMSize( pMem ), m_Timer.GetDuration().GetMicroseconds() );
+	}
+	else
+	{
+		SetCRTAllocFailed( nSize );
+	}
+	return pMem;
+}
+
+void *CDbgMemAlloc::Realloc( void *pMem, size_t nSize, const char *pFileName, int nLine )
+{
+	HEAP_LOCK();
+
+	pFileName = FindOrCreateFilename( pFileName );
+
+	if ( !m_bInitialized )
+		return InternalRealloc( pMem, nSize, pFileName, nLine );
+
+	if ( pMem != 0 )
+	{
+		RegisterDeallocation( GetAllocatonFileName( pMem ), GetAllocatonLineNumber( pMem ), InternalLogicalSize( pMem), InternalMSize( pMem ), 0 );
+	}
+
+	GetActualDbgInfo( pFileName, nLine );
+
+	m_Timer.Start();
+	pMem = InternalRealloc( pMem, nSize, pFileName, nLine );
+	m_Timer.End();
+
+	if ( pMem )
+	{
+		RegisterAllocation( GetAllocatonFileName( pMem ), GetAllocatonLineNumber( pMem ), InternalLogicalSize( pMem), InternalMSize( pMem ), m_Timer.GetDuration().GetMicroseconds() );
+	}
+	else
+	{
+		SetCRTAllocFailed( nSize );
+	}
+	return pMem;
+}
+
+void  CDbgMemAlloc::Free( void *pMem, const char * /*pFileName*/, int nLine )
+{
+	if ( !pMem )
+		return;
+
+	HEAP_LOCK();
+
+	if ( !m_bInitialized )
+	{
+		InternalFree( pMem );
+		return;
+	}
+
+	int nOldLogicalSize = InternalLogicalSize( pMem );
+	int nOldSize = InternalMSize( pMem );
+	const char *pOldFileName = GetAllocatonFileName( pMem );
+	int oldLine = GetAllocatonLineNumber( pMem );
+
+	m_Timer.Start();
+	InternalFree( pMem );
+ 	m_Timer.End();
+
+	RegisterDeallocation( pOldFileName, oldLine, nOldLogicalSize, nOldSize, m_Timer.GetDuration().GetMicroseconds() );
+}
+
+void *CDbgMemAlloc::Expand_NoLongerSupported( void *pMem, size_t nSize, const char *pFileName, int nLine )
+{
+	return NULL;
+}
+
+
+//-----------------------------------------------------------------------------
+// Returns size of a particular allocation
+//-----------------------------------------------------------------------------
+size_t CDbgMemAlloc::GetSize( void *pMem )
+{
+	HEAP_LOCK();
+
+	if ( !pMem )
+		return CalcHeapUsed();
+
+	return InternalMSize( pMem );
+}
+
+
+//-----------------------------------------------------------------------------
+// FIXME: Remove when we make our own heap! Crt stuff we're currently using
+//-----------------------------------------------------------------------------
+long CDbgMemAlloc::CrtSetBreakAlloc( long lNewBreakAlloc )
+{
+#ifdef POSIX
+	return 0;
+#else
+	return _CrtSetBreakAlloc( lNewBreakAlloc );
+#endif
+}
+
+int CDbgMemAlloc::CrtSetReportMode( int nReportType, int nReportMode )
+{
+#ifdef POSIX
+	return 0;
+#else
+	return _CrtSetReportMode( nReportType, nReportMode );
+#endif
+}
+
+int CDbgMemAlloc::CrtIsValidHeapPointer( const void *pMem )
+{
+#ifdef POSIX
+	return 0;
+#else
+	return _CrtIsValidHeapPointer( pMem );
+#endif
+}
+
+int CDbgMemAlloc::CrtIsValidPointer( const void *pMem, unsigned int size, int access )
+{
+#ifdef POSIX
+	return 0;
+#else
+	return _CrtIsValidPointer( pMem, size, access );
+#endif
+}
+
+#define DBGMEM_CHECKMEMORY 1
+
+int CDbgMemAlloc::CrtCheckMemory( void )
+{
+#if !defined( DBGMEM_CHECKMEMORY ) || defined( POSIX )
+	return 1;
+#else
+	if ( !_CrtCheckMemory())
+	{
+		Msg( "Memory check failed!\n" );
+		return 0;
+	}
+	return 1;
+#endif
+}
+
+int CDbgMemAlloc::CrtSetDbgFlag( int nNewFlag )
+{
+#ifdef POSIX
+	return 0;
+#else
+	return _CrtSetDbgFlag( nNewFlag );
+#endif
+}
+
+void CDbgMemAlloc::CrtMemCheckpoint( _CrtMemState *pState )
+{
+#ifndef POSIX
+	_CrtMemCheckpoint( pState );
+#endif
+}
+
+// FIXME: Remove when we have our own allocator
+void* CDbgMemAlloc::CrtSetReportFile( int nRptType, void* hFile )
+{
+#ifdef POSIX
+	return 0;
+#else
+	return (void*)_CrtSetReportFile( nRptType, (_HFILE)hFile );
+#endif
+}
+
+void* CDbgMemAlloc::CrtSetReportHook( void* pfnNewHook )
+{
+#ifdef POSIX
+	return 0;
+#else
+	return (void*)_CrtSetReportHook( (_CRT_REPORT_HOOK)pfnNewHook );
+#endif
+}
+
+int CDbgMemAlloc::CrtDbgReport( int nRptType, const char * szFile,
+		int nLine, const char * szModule, const char * pMsg )
+{
+#ifdef POSIX
+	return 0;
+#else
+	return _CrtDbgReport( nRptType, szFile, nLine, szModule, pMsg );
+#endif
+}
+
+int CDbgMemAlloc::heapchk()
+{
+#ifdef POSIX
+	return 0;
+#else
+	return _HEAPOK;
+#endif
+}
+
+void CDbgMemAlloc::DumpBlockStats( void *p )
+{
+	DbgMemHeader_t *pBlock = (DbgMemHeader_t *)p - 1;
+	if ( !CrtIsValidHeapPointer( pBlock ) )
+	{
+		Msg( "0x%p is not valid heap pointer\n", p );
+		return;
+	}
+
+	const char *pFileName = GetAllocatonFileName( p );
+	int line = GetAllocatonLineNumber( p );
+
+	Msg( "0x%p allocated by %s line %d, %llu bytes\n", p, pFileName, line, (uint64)GetSize( p ) );
+}
+
+//-----------------------------------------------------------------------------
+// Stat output
+//-----------------------------------------------------------------------------
+void CDbgMemAlloc::DumpMemInfo( const char *pAllocationName, int line, const MemInfo_t &info )
+{
+	m_OutputFunc("%s, line %i\t%.1f\t%.1f\t%.1f\t%.1f\t%.1f\t%d\t%d\t%d\t%d",
+		pAllocationName,
+		line,
+		info.m_nCurrentSize / 1024.0f,
+		info.m_nPeakSize / 1024.0f,
+		info.m_nTotalSize / 1024.0f,
+		info.m_nOverheadSize / 1024.0f,
+		info.m_nPeakOverheadSize / 1024.0f,
+		(int)(info.m_nTime / 1000),
+		info.m_nCurrentCount,
+		info.m_nPeakCount,
+		info.m_nTotalCount
+		);
+
+	for (int i = 0; i < NUM_BYTE_COUNT_BUCKETS; ++i)
+	{
+		m_OutputFunc( "\t%d", info.m_pCount[i] );
+	}
+
+	m_OutputFunc("\n");
+}
+
+
+//-----------------------------------------------------------------------------
+// Stat output
+//-----------------------------------------------------------------------------
+void CDbgMemAlloc::DumpFileStats()
+{
+	if ( !m_pStatMap )
+		return;
+
+	StatMapIter_t iter = m_pStatMap->begin();
+	while ( iter != m_pStatMap->end() )
+	{
+		DumpMemInfo( iter->first.m_pFileName, iter->first.m_nLine, iter->second );
+		iter++;
+	}
+}
+
+void CDbgMemAlloc::DumpStatsFileBase( char const *pchFileBase )
+{
+	HEAP_LOCK();
+
+	char szFileName[MAX_PATH];
+	static int s_FileCount = 0;
+	if (m_OutputFunc == DefaultHeapReportFunc)
+	{
+		char *pPath = "";
+		if ( IsX360() )
+		{
+			pPath = "D:\\";
+		}
+
+#if defined( _MEMTEST ) && defined( _X360 )
+		char szXboxName[32];
+		strcpy( szXboxName, "xbox" );
+		DWORD numChars = sizeof( szXboxName );
+		DmGetXboxName( szXboxName, &numChars ); 
+		char *pXboxName = strstr( szXboxName, "_360" );
+		if ( pXboxName )
+		{
+			*pXboxName = '\0';
+		}
+
+		SYSTEMTIME systemTime;
+		GetLocalTime( &systemTime );
+		_snprintf( szFileName, sizeof( szFileName ), "%s%s_%2.2d%2.2d_%2.2d%2.2d%2.2d_%d.txt", pPath, s_szStatsMapName, systemTime.wMonth, systemTime.wDay, systemTime.wHour, systemTime.wMinute, systemTime.wSecond, s_FileCount );
+#else
+		_snprintf( szFileName, sizeof( szFileName ), "%s%s%d.txt", pPath, pchFileBase, s_FileCount );
+#endif
+		szFileName[ ARRAYSIZE(szFileName) - 1 ] = 0;
+
+		++s_FileCount;
+
+		s_DbgFile = fopen(szFileName, "wt");
+		if (!s_DbgFile)
+			return;
+	}
+
+	m_OutputFunc("Allocation type\tCurrent Size(k)\tPeak Size(k)\tTotal Allocations(k)\tOverhead Size(k)\tPeak Overhead Size(k)\tTime(ms)\tCurrent Count\tPeak Count\tTotal Count");
+
+	for (int i = 0; i < NUM_BYTE_COUNT_BUCKETS; ++i)
+	{
+		m_OutputFunc( "\t%s", s_pCountHeader[i] );
+	}
+
+	m_OutputFunc("\n");
+
+	DumpMemInfo( "Totals", 0, m_GlobalInfo );
+
+#ifdef WIN32
+	if ( IsX360() )
+	{
+		// add a line that has free memory
+		size_t usedMemory, freeMemory;
+		GlobalMemoryStatus( &usedMemory, &freeMemory );
+		MemInfo_t info;
+		// OS takes 32 MB, report our internal allocations only
+		info.m_nCurrentSize = usedMemory;
+		DumpMemInfo( "Used Memory", 0, info );
+	}
+#endif
+
+	DumpFileStats();
+
+	if (m_OutputFunc == DefaultHeapReportFunc)
+	{
+		fclose(s_DbgFile);
+
+#if defined( _X360 ) && !defined( _RETAIL )
+		XBX_rMemDump( szFileName );
+#endif
+	}
+}
+
+void CDbgMemAlloc::GlobalMemoryStatus( size_t *pUsedMemory, size_t *pFreeMemory )
+{
+	if ( !pUsedMemory || !pFreeMemory )
+		return;
+
+#if defined ( _X360 )
+
+	// GlobalMemoryStatus tells us how much physical memory is free
+	MEMORYSTATUS stat;
+	::GlobalMemoryStatus( &stat );
+	*pFreeMemory = stat.dwAvailPhys;
+
+	// Used is total minus free (discount the 32MB system reservation)
+	*pUsedMemory = ( stat.dwTotalPhys - 32*1024*1024 ) - *pFreeMemory;
+
+#else
+
+	// no data
+	*pFreeMemory = 0;
+	*pUsedMemory = 0;
+
+#endif
+}
+
+//-----------------------------------------------------------------------------
+// Stat output
+//-----------------------------------------------------------------------------
+void CDbgMemAlloc::DumpStats()
+{
+	DumpStatsFileBase( "memstats" );
+}
+
+void CDbgMemAlloc::SetCRTAllocFailed( size_t nSize )
+{
+	m_sMemoryAllocFailed = nSize;
+
+	MemAllocOOMError( nSize );
+}
+
+size_t CDbgMemAlloc::MemoryAllocFailed()
+{
+	return m_sMemoryAllocFailed;
+}
+
+
+
+#if defined( LINUX ) && !defined( NO_HOOK_MALLOC )
+//
+// Under linux we can ask GLIBC to override malloc for us
+//   Base on code from Ryan, http://hg.icculus.org/icculus/mallocmonitor/file/29c4b0d049f7/monitor_client/malloc_hook_glibc.c
+//
+//
+static void *glibc_malloc_hook = NULL;
+static void *glibc_realloc_hook = NULL;
+static void *glibc_memalign_hook = NULL;
+static void *glibc_free_hook = NULL;
+
+/* convenience functions for setting the hooks... */
+static inline void save_glibc_hooks(void);
+static inline void set_glibc_hooks(void);
+static inline void set_override_hooks(void);
+
+CThreadMutex g_HookMutex;
+/*
+ * Our overriding hooks...they call through to the original C runtime
+ *  implementations and report to the monitoring daemon.
+ */
+
+static void *override_malloc_hook(size_t s, const void *caller)
+{
+    void *retval;
+    AUTO_LOCK( g_HookMutex );
+    set_glibc_hooks();  /* put glibc back in control. */
+    retval = InternalMalloc( s, NULL, 0 );
+    save_glibc_hooks();  /* update in case glibc changed them. */
+
+    set_override_hooks(); /* only restore hooks if daemon is listening */
+
+    return(retval);
+} /* override_malloc_hook */
+
+
+static void *override_realloc_hook(void *ptr, size_t s, const void *caller)
+{
+    void *retval;
+    AUTO_LOCK( g_HookMutex );
+
+    set_glibc_hooks();  /* put glibc back in control. */
+    retval = InternalRealloc(ptr, s, NULL, 0);  /* call glibc version. */
+    save_glibc_hooks();  /* update in case glibc changed them. */
+
+    set_override_hooks(); /* only restore hooks if daemon is listening */
+
+    return(retval);
+} /* override_realloc_hook */
+
+
+static void *override_memalign_hook(size_t a, size_t s, const void *caller)
+{
+    void *retval;
+    AUTO_LOCK( g_HookMutex );
+
+    set_glibc_hooks();  /* put glibc back in control. */
+    retval = memalign(a, s);  /* call glibc version. */
+    save_glibc_hooks();  /* update in case glibc changed them. */
+
+    set_override_hooks(); /* only restore hooks if daemon is listening */
+
+    return(retval);
+} /* override_memalign_hook */
+
+
+static void override_free_hook(void *ptr, const void *caller)
+{
+    AUTO_LOCK( g_HookMutex );
+
+    set_glibc_hooks();  /* put glibc back in control. */
+    InternalFree(ptr);  /* call glibc version. */
+    save_glibc_hooks();  /* update in case glibc changed them. */
+
+    set_override_hooks(); /* only restore hooks if daemon is listening */
+} /* override_free_hook */
+
+
+
+/*
+ * Convenience functions for swapping the hooks around...
+ */
+
+/*
+ * Save a copy of the original allocation hooks, so we can call into them
+ *  from our overriding functions. It's possible that glibc might change
+ *  these hooks under various conditions (so the manual's examples seem
+ *  to suggest), so we update them whenever we finish calling into the
+ *  the originals.
+ */
+static inline void save_glibc_hooks(void)
+{
+    glibc_malloc_hook = (void *)__malloc_hook;
+    glibc_realloc_hook = (void *)__realloc_hook;
+    glibc_memalign_hook = (void *)__memalign_hook;
+    glibc_free_hook = (void *)__free_hook;
+} /* save_glibc_hooks */
+
+/*
+ * Restore the hooks to the glibc versions. This is needed since, say,
+ *  their realloc() might call malloc() or free() under the hood, etc, so
+ *  it's safer to let them have complete control over the subsystem, which
+ *  also makes our logging saner, too.
+ */
+static inline void set_glibc_hooks(void)
+{
+    __malloc_hook = (void* (*)(size_t, const void*))glibc_malloc_hook;
+    __realloc_hook = (void* (*)(void*, size_t, const void*))glibc_realloc_hook;
+    __memalign_hook = (void* (*)(size_t, size_t, const void*))glibc_memalign_hook;
+    __free_hook = (void (*)(void*, const void*))glibc_free_hook;
+} /* set_glibc_hooks */
+
+
+/*
+ * Put our hooks back in place. This should be done after the original
+ *  glibc version has been called and we've finished any logging (which
+ *  may call glibc functions, too). This sets us up for the next calls from
+ *  the application.
+ */
+static inline void set_override_hooks(void)
+{
+    __malloc_hook = override_malloc_hook;
+    __realloc_hook = override_realloc_hook;
+    __memalign_hook = override_memalign_hook;
+    __free_hook = override_free_hook;
+} /* set_override_hooks */
+
+
+
+/*
+ * The Hook Of All Hooks...how we get in there in the first place.
+ */
+
+/*
+ * glibc will call this when the malloc subsystem is initializing, giving
+ *  us a chance to install hooks that override the functions.
+ */
+static void __attribute__((constructor)) override_init_hook(void)
+{
+    AUTO_LOCK( g_HookMutex );
+
+    /* install our hooks. Will connect to daemon on first malloc, etc. */
+    save_glibc_hooks();
+    set_override_hooks();
+} /* override_init_hook */
+
+
+/*
+ * __malloc_initialize_hook is apparently a "weak variable", so you can
+ *  define and assign it here even though it's in glibc, too. This lets
+ *  us hook into malloc as soon as the runtime initializes, and before
+ *  main() is called. Basically, this whole trick depends on this.
+ */
+void (*__MALLOC_HOOK_VOLATILE __malloc_initialize_hook)(void) __attribute__((visibility("default")))= override_init_hook;
+
+#endif // LINUX
+
+
+#if defined( OSX ) && !defined( NO_HOOK_MALLOC )
+//
+// pointers to the osx versions of these functions
+static void *osx_malloc_hook = NULL;
+static void *osx_realloc_hook = NULL;
+static void *osx_free_hook = NULL;
+
+// convenience functions for setting the hooks... 
+static inline void save_osx_hooks(void);
+static inline void set_osx_hooks(void);
+static inline void set_override_hooks(void);
+
+CThreadMutex g_HookMutex;
+//
+// Our overriding hooks...they call through to the original C runtime
+//  implementations and report to the monitoring daemon.
+//
+
+static void *override_malloc_hook(struct _malloc_zone_t *zone, size_t s)
+{
+    void *retval;
+    set_osx_hooks(); 
+    retval = InternalMalloc( s, NULL, 0 );
+    set_override_hooks(); 
+	
+    return(retval);
+} 
+
+
+static void *override_realloc_hook(struct _malloc_zone_t *zone, void *ptr, size_t s)
+{
+    void *retval;
+	
+    set_osx_hooks();  
+    retval = InternalRealloc(ptr, s, NULL, 0);	
+    set_override_hooks(); 
+	
+    return(retval);
+} 
+
+
+static void override_free_hook(struct _malloc_zone_t *zone, void *ptr)
+{
+	// sometime they pass in a null pointer from higher level calls, just ignore it
+	if ( !ptr )
+		return;
+	
+    set_osx_hooks(); 
+	
+	DbgMemHeader_t *pInternalMem = GetCrtDbgMemHeader( ptr );
+	if ( *((int*)pInternalMem->m_Reserved) == 0xf00df00d )
+	{
+		InternalFree( ptr );
+	}
+    
+    set_override_hooks(); 
+} 
+
+
+/*
+ 
+ These are func's we could optionally override right now on OSX but don't need to
+ 
+ static size_t override_size_hook(struct _malloc_zone_t *zone, const void *ptr)
+ {
+ set_osx_hooks();  
+ DbgMemHeader_t *pInternalMem = GetCrtDbgMemHeader( (void *)ptr );
+ set_override_hooks(); 
+ if ( *((int*)pInternalMem->m_Reserved) == 0xf00df00d )
+ {
+ return pInternalMem->nLogicalSize;
+ }
+ return 0;
+ } 
+ 
+ 
+ static void *override_calloc_hook(struct _malloc_zone_t *zone, size_t num_items, size_t size )
+ {
+ void *ans = override_malloc_hook( zone, num_items*size );
+ if ( !ans )
+ return 0;
+ memset( ans, 0x0, num_items*size );
+ return ans;
+ }
+ 
+ static void *override_valloc_hook(struct _malloc_zone_t *zone, size_t size )
+ {
+ return override_calloc_hook( zone, 1, size );
+ }
+ 
+ static void override_destroy_hook(struct _malloc_zone_t *zone)
+ {
+ }
+ */
+
+
+static inline void unprotect_malloc_zone( malloc_zone_t *malloc_zone )
+{
+	// Starting in OS X 10.7 the default zone defaults to read-only, version 8.
+	// The version check may not be necessary, but we know it was RW before that.
+	if ( malloc_zone->version >= 8 )
+	{
+		vm_protect( mach_task_self(), (uintptr_t)malloc_zone, sizeof( malloc_zone_t ), 0, VM_PROT_READ | VM_PROT_WRITE );
+	}
+}
+
+static inline void protect_malloc_zone( malloc_zone_t *malloc_zone )
+{
+	if ( malloc_zone->version >= 8 )
+	{
+		vm_protect( mach_task_self(), (uintptr_t)malloc_zone, sizeof( malloc_zone_t ), 0, VM_PROT_READ );
+	}
+}
+
+//
+//  Save a copy of the original allocation hooks, so we can call into them
+//   from our overriding functions. It's possible that osx might change
+//   these hooks under various conditions (so the manual's examples seem
+//   to suggest), so we update them whenever we finish calling into the
+//   the originals.
+//
+static inline void save_osx_hooks(void)
+{
+	malloc_zone_t *malloc_zone = malloc_default_zone();
+
+	osx_malloc_hook = (void *)malloc_zone->malloc;
+	osx_realloc_hook = (void *)malloc_zone->realloc;
+	osx_free_hook = (void *)malloc_zone->free;
+
+	// These are func's we could optionally override right now on OSX but don't need to
+	// osx_size_hook = (void *)malloc_zone->size;
+	// osx_calloc_hook = (void *)malloc_zone->calloc;
+	// osx_valloc_hook = (void *)malloc_zone->valloc;
+	// osx_destroy_hook = (void *)malloc_zone->destroy;
+}
+
+//
+//  Restore the hooks to the osx versions. This is needed since, say,
+//   their realloc() might call malloc() or free() under the hood, etc, so
+//   it's safer to let them have complete control over the subsystem, which
+//   also makes our logging saner, too.
+//
+static inline void set_osx_hooks(void)
+{
+	malloc_zone_t *malloc_zone = malloc_default_zone();
+
+	unprotect_malloc_zone( malloc_zone );
+	malloc_zone->malloc = (void* (*)(_malloc_zone_t*, size_t))osx_malloc_hook;
+	malloc_zone->realloc = (void* (*)(_malloc_zone_t*, void*, size_t))osx_realloc_hook;
+	malloc_zone->free = (void (*)(_malloc_zone_t*, void*))osx_free_hook;
+	protect_malloc_zone( malloc_zone );
+
+	// These are func's we could optionally override right now on OSX but don't need to
+
+	//malloc_zone->size = (size_t (*)(_malloc_zone_t*, const void *))osx_size_hook;
+	//malloc_zone->calloc = (void* (*)(_malloc_zone_t*, size_t, size_t))osx_calloc_hook;
+	//malloc_zone->valloc = (void* (*)(_malloc_zone_t*, size_t))osx_valloc_hook;
+	//malloc_zone->destroy = (void (*)(_malloc_zone_t*))osx_destroy_hook;
+}
+
+
+/*
+ * Put our hooks back in place. This should be done after the original
+ *  osx version has been called and we've finished any logging (which
+ *  may call osx functions, too). This sets us up for the next calls from
+ *  the application.
+ */
+static inline void set_override_hooks(void)
+{
+	malloc_zone_t *malloc_zone = malloc_default_zone();
+	AssertMsg( malloc_zone, "No malloc zone returned by malloc_default_zone" );
+
+	unprotect_malloc_zone( malloc_zone );
+	malloc_zone->malloc = override_malloc_hook;
+	malloc_zone->realloc = override_realloc_hook;
+	malloc_zone->free = override_free_hook;
+	protect_malloc_zone( malloc_zone );
+
+	// These are func's we could optionally override right now on OSX but don't need to
+	//malloc_zone->size = override_size_hook;
+	//malloc_zone->calloc = override_calloc_hook;
+	// malloc_zone->valloc = override_valloc_hook;
+	//malloc_zone->destroy = override_destroy_hook;
+}
+
+
+//
+// The Hook Of All Hooks...how we get in there in the first place.
+//
+// osx will call this when the malloc subsystem is initializing, giving
+// us a chance to install hooks that override the functions.
+//
+
+void __attribute__ ((constructor)) mem_init(void)
+{
+    AUTO_LOCK( g_HookMutex );
+	save_osx_hooks();
+    set_override_hooks();
+}
+
+void *operator new( size_t nSize, int nBlockUse, const char *pFileName, int nLine )
+{
+	set_osx_hooks(); 
+	void *pMem = g_pMemAlloc->Alloc(nSize, pFileName, nLine);
+	set_override_hooks(); 
+	return pMem;
+}
+
+void *operator new[] ( size_t nSize, int nBlockUse, const char *pFileName, int nLine )
+{
+	set_osx_hooks(); 
+	void *pMem = g_pMemAlloc->Alloc(nSize, pFileName, nLine);
+	set_override_hooks(); 
+	return pMem;
+}
+
+
+#endif // defined( OSX ) && !defined( NO_HOOK_MALLOC )
+
+
+#endif // (defined(_DEBUG) || defined(USE_MEM_DEBUG))
+
+#endif // !STEAM && !NO_MALLOC_OVERRIDE