MemDumpAnalysis: moved into the Tools folder; uses the global Expat library now.

git-svn-id: http://mc-server.googlecode.com/svn/trunk@1656 0a769ca7-a7f5-676a-18bf-c427514a06d6

Tools/MemDumpAnalysis/Globals.cpp

@@ -0,0 +1,10 @@
+
+// Globals.cpp 
+
+// Used for precompiled header generation
+
+#include "Globals.h"
+
+
+
+

Tools/MemDumpAnalysis/Globals.h

@@ -0,0 +1,35 @@
+
+// Globals.h
+
+// Used for precompiled header generation
+
+
+
+
+
+#pragma once
+
+#include "../../source/Globals.h"
+
+/*
+// System headers:
+#include "targetver.h"
+#include <stdio.h>
+
+// STL headers:
+#include <vector>
+#include <list>
+#include <map>
+#include <string>
+
+// Common:
+#include "../source/StringUtils.h"
+#include "../source/OSSupport/File.h"
+*/
+
+// Libraries:
+#include "../../expat/expat.h"
+
+
+
+

Tools/MemDumpAnalysis/MemDumpAnalysis.cpp

@@ -0,0 +1,321 @@
+
+// MemDumpAnalysis.cpp
+
+// Defines the entry point for the console application.
+
+#include "Globals.h"
+
+#ifdef _WIN32
+	#pragma comment(lib, "ws2_32.lib")  // Needed for StringUtils' RawBEToUtf8() et al.
+#endif  // _WIN32
+
+
+
+
+
+typedef std::set<AString> AStringSet;
+
+
+
+
+
+class cFunction
+{
+public:
+	int        m_Size;   ///< Sum of memory block sizes allocated by this function or its children
+	int        m_Count;  ///< Total number of memory blocks allocated by this function or its children
+	AStringSet m_ChildrenNames;
+	
+	cFunction(void) :
+		m_Size(0),
+		m_Count(0)
+	{
+	}
+} ;
+
+typedef std::map<AString, cFunction> FunctionMap;
+
+
+
+
+
+int g_CurrentID = 0;
+int g_CurrentSize = 0;
+FunctionMap g_FnMap;
+AString g_PrevFunctionName;
+
+
+
+
+
+bool IsFnBlackListed(const char * a_FnName)
+{
+	static const char * BlackList[] =
+	{
+		"MyAllocHook",
+		"_heap_alloc_dbg_impl",
+		"_nh_malloc_dbg_impl",
+		"_nh_malloc_dbg",
+		"malloc",
+		"operator new",
+		"_malloc_dbg",
+		"realloc_help",
+		"_realloc_dbg",
+		"realloc",
+		"l_alloc",
+		"luaM_realloc_",
+		"",
+	} ;
+	
+	for (int i = 0; i < ARRAYCOUNT(BlackList); i++)
+	{
+		if (strcmp(BlackList[i], a_FnName) == 0)
+		{
+			return true;
+		}
+	}
+	return false;
+}
+
+
+
+
+
+const char * FindAttr(const char ** a_Attrs, const char * a_AttrName)
+{
+	for (const char ** Attr = a_Attrs; *Attr != NULL; Attr += 2)
+	{
+		if (strcmp(*Attr, a_AttrName) == 0)
+		{
+			return *(Attr + 1);
+		}
+	}  // for Attr - a_Attrs[]
+	return NULL;
+}
+
+
+
+
+
+void OnStartElement(void * a_Data, const char * a_Element, const char ** a_Attrs)
+{
+	if (strcmp(a_Element, "LEAK") == 0)
+	{
+		const char * attrID   = FindAttr(a_Attrs, "requestID");
+		const char * attrSize = FindAttr(a_Attrs, "size");
+		g_CurrentID   = atoi((attrID   == NULL) ? "-1" : attrID);
+		g_CurrentSize = atoi((attrSize == NULL) ? "-1" : attrSize);
+		g_PrevFunctionName.clear();
+		return;
+	}
+	if (strcmp(a_Element, "STACKENTRY") == 0)
+	{
+		const char * fnName = FindAttr(a_Attrs, "decl");
+		if (fnName == NULL)
+		{
+			g_CurrentID = -1;
+			g_CurrentSize = -1;
+			return;
+		}
+		if (g_CurrentSize < 0)
+		{
+			return;
+		}
+		if (IsFnBlackListed(fnName))
+		{
+			return;
+		}
+		AString FunctionName = fnName;
+		cFunction & Function = g_FnMap[FunctionName];
+		Function.m_Size += g_CurrentSize;
+		Function.m_Count += 1;
+		if (!g_PrevFunctionName.empty())
+		{
+			Function.m_ChildrenNames.insert(g_PrevFunctionName);
+		}
+		std::swap(g_PrevFunctionName, FunctionName);  // We only care about moving FunctionName into g_PrevFunctionName
+		return;
+	}
+}
+
+
+
+
+
+void OnEndElement(void * a_Data, const char * a_Element)
+{
+	if (strcmp(a_Element, "LEAK") == 0)
+	{
+		g_CurrentID = -1;
+		g_CurrentSize = -1;
+		return;
+	}
+}
+
+
+
+
+
+bool CompareFnInt(const std::pair<AString, int> & a_First, const std::pair<AString, int> & a_Second)
+{
+	return (a_First.second < a_Second.second);
+}
+
+
+
+
+
+void WriteSizeStatistics(void)
+{
+	typedef std::vector<std::pair<AString, int> > StringIntPairs;
+	StringIntPairs FnSizes;
+	
+	cFile f("memdump_totals.txt", cFile::fmWrite);
+	if (!f.IsOpen())
+	{
+		LOGERROR("Cannot open memdump_totals.txt");
+		return;
+	}
+
+	for (FunctionMap::iterator itr = g_FnMap.begin(), end = g_FnMap.end(); itr != end; ++itr)
+	{
+		FnSizes.push_back(std::pair<AString, int>(itr->first, itr->second.m_Size));
+	}  // for itr - g_FnSizes[]
+	std::sort(FnSizes.begin(), FnSizes.end(), CompareFnInt);
+	
+	for (StringIntPairs::const_iterator itr = FnSizes.begin(), end = FnSizes.end(); itr != end; ++itr)
+	{
+		f.Printf("%d\t%s\n", itr->second, itr->first.c_str());
+	}  // for itr - FnSizes[]
+}
+
+
+
+
+
+void WriteCountStatistics(void)
+{
+	typedef std::vector<std::pair<AString, int> > StringIntPairs;
+	StringIntPairs FnCounts;
+	
+	cFile f("memdump_counts.txt", cFile::fmWrite);
+	if (!f.IsOpen())
+	{
+		LOGERROR("Cannot open memdump_counts.txt");
+		return;
+	}
+
+	for (FunctionMap::iterator itr = g_FnMap.begin(), end = g_FnMap.end(); itr != end; ++itr)
+	{
+		FnCounts.push_back(std::pair<AString, int>(itr->first, itr->second.m_Count));
+	}  // for itr - g_FnSizes[]
+	std::sort(FnCounts.begin(), FnCounts.end(), CompareFnInt);
+	
+	for (StringIntPairs::const_iterator itr = FnCounts.begin(), end = FnCounts.end(); itr != end; ++itr)
+	{
+		f.Printf("%d\t%s\n", itr->second, itr->first.c_str());
+	}  // for itr - FnSizes[]
+}
+
+
+
+
+
+AString HTMLEscape(const AString & a_Text)
+{
+	AString res;
+	res.reserve(a_Text.size());
+	size_t len = a_Text.length();
+	for (size_t i = 0; i < len; i++)
+	{
+		switch (a_Text[i])
+		{
+			case '<': res.append("&lt;<BR/>"); break;
+			case '>': res.append("<BR/>&gt;"); break;
+			case '&': res.append("&amp;"); break;
+			default:
+			{
+				res.push_back(a_Text[i]);
+			}
+		}
+	}  // for i - a_Text[]
+	return res;
+}
+
+
+
+
+
+void WriteDotGraph(void)
+{
+	cFile f("memdump.dot", cFile::fmWrite);
+	if (!f.IsOpen())
+	{
+		LOGERROR("Cannot open memdump.dot");
+		return;
+	}
+	
+	f.Printf("digraph {\n\tnode [shape=plaintext]\n\n");
+	for (FunctionMap::const_iterator itrF = g_FnMap.begin(), endF = g_FnMap.end(); itrF != endF; ++itrF)
+	{
+		f.Printf("\t\"%s\" [label=<%s<BR/>%d bytes (%d KiB)<BR/>%d blocks>]\n",
+			itrF->first.c_str(),
+			HTMLEscape(itrF->first).c_str(),
+			itrF->second.m_Size,
+			(itrF->second.m_Size + 1023) / 1024,
+			itrF->second.m_Count
+		);
+		const AStringSet & Children = itrF->second.m_ChildrenNames;
+		for (AStringSet::const_iterator itrN = Children.begin(), endN = Children.end(); itrN != endN; ++itrN)
+		{
+			f.Printf("\t\t\"%s\" -> \"%s\"\n", itrF->first.c_str(), itrN->c_str());
+		}
+		f.Printf("\n");
+	}  // for itr
+	f.Printf("}\n");
+}
+
+
+
+
+
+int main(int argc, char * argv[])
+{
+	// Open the dump file:
+	cFile f("memdump.xml", cFile::fmRead);
+	if (!f.IsOpen())
+	{
+		printf("Cannot open memdump.xml\n");
+		return 1;
+	}
+	
+	// Create the XML parser:
+	XML_Parser Parser = XML_ParserCreate(NULL);
+	XML_SetElementHandler(Parser, OnStartElement, OnEndElement);
+	
+	// Feed the file through XML parser:
+	char Buffer[512 KiB];
+	while (true)
+	{
+		int NumBytes = f.Read(Buffer, sizeof(Buffer));
+		if (NumBytes <= 0)
+		{
+			break;
+		}
+		XML_Parse(Parser, Buffer, NumBytes, false);
+		putc('.', stdout);
+	}
+	XML_Parse(Parser, "", 0, true);
+	f.Close();
+	
+	// Output the statistics
+	WriteSizeStatistics();
+	WriteCountStatistics();
+	WriteDotGraph();
+	
+	return 0;
+}
+
+
+
+

Tools/MemDumpAnalysis/MemDumpAnalysis.sln

@@ -0,0 +1,20 @@
+
+Microsoft Visual Studio Solution File, Format Version 10.00
+# Visual C++ Express 2008
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "MemDumpAnalysis", "MemDumpAnalysis.vcproj", "{110861A3-EF64-494F-8FC2-7F7ACFD3FEAC}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Win32 = Debug|Win32
+		Release|Win32 = Release|Win32
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{110861A3-EF64-494F-8FC2-7F7ACFD3FEAC}.Debug|Win32.ActiveCfg = Debug|Win32
+		{110861A3-EF64-494F-8FC2-7F7ACFD3FEAC}.Debug|Win32.Build.0 = Debug|Win32
+		{110861A3-EF64-494F-8FC2-7F7ACFD3FEAC}.Release|Win32.ActiveCfg = Release|Win32
+		{110861A3-EF64-494F-8FC2-7F7ACFD3FEAC}.Release|Win32.Build.0 = Release|Win32
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+EndGlobal

Tools/MemDumpAnalysis/MemDumpAnalysis.vcproj

@@ -0,0 +1,439 @@
+<?xml version="1.0" encoding="windows-1250"?>
+<VisualStudioProject
+	ProjectType="Visual C++"
+	Version="9,00"
+	Name="MemDumpAnalysis"
+	ProjectGUID="{110861A3-EF64-494F-8FC2-7F7ACFD3FEAC}"
+	RootNamespace="MemDumpAnalysis"
+	Keyword="Win32Proj"
+	TargetFrameworkVersion="196613"
+	>
+	<Platforms>
+		<Platform
+			Name="Win32"
+		/>
+	</Platforms>
+	<ToolFiles>
+	</ToolFiles>
+	<Configurations>
+		<Configuration
+			Name="Debug|Win32"
+			OutputDirectory="$(SolutionDir)$(ConfigurationName)"
+			IntermediateDirectory="$(ConfigurationName)"
+			ConfigurationType="1"
+			CharacterSet="2"
+			>
+			<Tool
+				Name="VCPreBuildEventTool"
+			/>
+			<Tool
+				Name="VCCustomBuildTool"
+			/>
+			<Tool
+				Name="VCXMLDataGeneratorTool"
+			/>
+			<Tool
+				Name="VCWebServiceProxyGeneratorTool"
+			/>
+			<Tool
+				Name="VCMIDLTool"
+			/>
+			<Tool
+				Name="VCCLCompilerTool"
+				Optimization="0"
+				PreprocessorDefinitions="WIN32;_DEBUG;_CONSOLE;COMPILED_FROM_DSP;XML_STATIC"
+				MinimalRebuild="true"
+				BasicRuntimeChecks="3"
+				RuntimeLibrary="3"
+				UsePrecompiledHeader="2"
+				PrecompiledHeaderThrough="Globals.h"
+				WarningLevel="3"
+				DebugInformationFormat="4"
+			/>
+			<Tool
+				Name="VCManagedResourceCompilerTool"
+			/>
+			<Tool
+				Name="VCResourceCompilerTool"
+			/>
+			<Tool
+				Name="VCPreLinkEventTool"
+			/>
+			<Tool
+				Name="VCLinkerTool"
+				OutputFile="$(ProjectDir)\..\MCServer\$(ProjectName)_debug.exe"
+				LinkIncremental="2"
+				GenerateDebugInformation="true"
+				SubSystem="1"
+				TargetMachine="1"
+			/>
+			<Tool
+				Name="VCALinkTool"
+			/>
+			<Tool
+				Name="VCManifestTool"
+			/>
+			<Tool
+				Name="VCXDCMakeTool"
+			/>
+			<Tool
+				Name="VCBscMakeTool"
+			/>
+			<Tool
+				Name="VCFxCopTool"
+			/>
+			<Tool
+				Name="VCAppVerifierTool"
+			/>
+			<Tool
+				Name="VCPostBuildEventTool"
+			/>
+		</Configuration>
+		<Configuration
+			Name="Release|Win32"
+			OutputDirectory="$(SolutionDir)$(ConfigurationName)"
+			IntermediateDirectory="$(ConfigurationName)"
+			ConfigurationType="1"
+			CharacterSet="2"
+			WholeProgramOptimization="1"
+			>
+			<Tool
+				Name="VCPreBuildEventTool"
+			/>
+			<Tool
+				Name="VCCustomBuildTool"
+			/>
+			<Tool
+				Name="VCXMLDataGeneratorTool"
+			/>
+			<Tool
+				Name="VCWebServiceProxyGeneratorTool"
+			/>
+			<Tool
+				Name="VCMIDLTool"
+			/>
+			<Tool
+				Name="VCCLCompilerTool"
+				Optimization="2"
+				EnableIntrinsicFunctions="true"
+				PreprocessorDefinitions="WIN32;NDEBUG;_CONSOLE;COMPILED_FROM_DSP;XML_STATIC"
+				RuntimeLibrary="2"
+				EnableFunctionLevelLinking="true"
+				UsePrecompiledHeader="2"
+				PrecompiledHeaderThrough="Globals.h"
+				WarningLevel="3"
+				DebugInformationFormat="3"
+			/>
+			<Tool
+				Name="VCManagedResourceCompilerTool"
+			/>
+			<Tool
+				Name="VCResourceCompilerTool"
+			/>
+			<Tool
+				Name="VCPreLinkEventTool"
+			/>
+			<Tool
+				Name="VCLinkerTool"
+				OutputFile="$(ProjectDir)\..\MCServer\$(ProjectName).exe"
+				LinkIncremental="1"
+				GenerateDebugInformation="true"
+				SubSystem="1"
+				OptimizeReferences="2"
+				EnableCOMDATFolding="2"
+				TargetMachine="1"
+			/>
+			<Tool
+				Name="VCALinkTool"
+			/>
+			<Tool
+				Name="VCManifestTool"
+			/>
+			<Tool
+				Name="VCXDCMakeTool"
+			/>
+			<Tool
+				Name="VCBscMakeTool"
+			/>
+			<Tool
+				Name="VCFxCopTool"
+			/>
+			<Tool
+				Name="VCAppVerifierTool"
+			/>
+			<Tool
+				Name="VCPostBuildEventTool"
+			/>
+		</Configuration>
+	</Configurations>
+	<References>
+	</References>
+	<Files>
+		<Filter
+			Name="Source Files"
+			Filter="cpp;c;cc;cxx;def;odl;idl;hpj;bat;asm;asmx"
+			UniqueIdentifier="{4FC737F1-C7A5-4376-A066-2A32D752A2FF}"
+			>
+			<File
+				RelativePath=".\Globals.cpp"
+				>
+				<FileConfiguration
+					Name="Debug|Win32"
+					>
+					<Tool
+						Name="VCCLCompilerTool"
+						UsePrecompiledHeader="1"
+					/>
+				</FileConfiguration>
+				<FileConfiguration
+					Name="Release|Win32"
+					>
+					<Tool
+						Name="VCCLCompilerTool"
+						UsePrecompiledHeader="1"
+					/>
+				</FileConfiguration>
+			</File>
+			<File
+				RelativePath=".\Globals.h"
+				>
+			</File>
+			<File
+				RelativePath=".\MemDumpAnalysis.cpp"
+				>
+			</File>
+			<File
+				RelativePath=".\targetver.h"
+				>
+			</File>
+		</Filter>
+		<Filter
+			Name="expat"
+			>
+			<File
+				RelativePath="..\..\expat\ascii.h"
+				>
+			</File>
+			<File
+				RelativePath="..\..\expat\asciitab.h"
+				>
+			</File>
+			<File
+				RelativePath="..\..\expat\expat.h"
+				>
+			</File>
+			<File
+				RelativePath="..\..\expat\expat_external.h"
+				>
+			</File>
+			<File
+				RelativePath="..\..\expat\iasciitab.h"
+				>
+			</File>
+			<File
+				RelativePath="..\..\expat\internal.h"
+				>
+			</File>
+			<File
+				RelativePath="..\..\expat\latin1tab.h"
+				>
+			</File>
+			<File
+				RelativePath="..\..\expat\nametab.h"
+				>
+			</File>
+			<File
+				RelativePath="..\..\expat\utf8tab.h"
+				>
+			</File>
+			<File
+				RelativePath="..\..\expat\winconfig.h"
+				>
+			</File>
+			<File
+				RelativePath="..\..\expat\xmlparse.c"
+				>
+				<FileConfiguration
+					Name="Debug|Win32"
+					>
+					<Tool
+						Name="VCCLCompilerTool"
+						UsePrecompiledHeader="0"
+					/>
+				</FileConfiguration>
+				<FileConfiguration
+					Name="Release|Win32"
+					>
+					<Tool
+						Name="VCCLCompilerTool"
+						UsePrecompiledHeader="0"
+					/>
+				</FileConfiguration>
+			</File>
+			<File
+				RelativePath="..\..\expat\xmlrole.c"
+				>
+				<FileConfiguration
+					Name="Debug|Win32"
+					>
+					<Tool
+						Name="VCCLCompilerTool"
+						UsePrecompiledHeader="0"
+					/>
+				</FileConfiguration>
+				<FileConfiguration
+					Name="Release|Win32"
+					>
+					<Tool
+						Name="VCCLCompilerTool"
+						UsePrecompiledHeader="0"
+					/>
+				</FileConfiguration>
+			</File>
+			<File
+				RelativePath="..\..\expat\xmlrole.h"
+				>
+			</File>
+			<File
+				RelativePath="..\..\expat\xmltok.c"
+				>
+				<FileConfiguration
+					Name="Debug|Win32"
+					>
+					<Tool
+						Name="VCCLCompilerTool"
+						UsePrecompiledHeader="0"
+					/>
+				</FileConfiguration>
+				<FileConfiguration
+					Name="Release|Win32"
+					>
+					<Tool
+						Name="VCCLCompilerTool"
+						UsePrecompiledHeader="0"
+					/>
+				</FileConfiguration>
+			</File>
+			<File
+				RelativePath="..\..\expat\xmltok.h"
+				>
+			</File>
+			<File
+				RelativePath="..\..\expat\xmltok_impl.c"
+				>
+				<FileConfiguration
+					Name="Debug|Win32"
+					>
+					<Tool
+						Name="VCCLCompilerTool"
+						UsePrecompiledHeader="0"
+					/>
+				</FileConfiguration>
+				<FileConfiguration
+					Name="Release|Win32"
+					>
+					<Tool
+						Name="VCCLCompilerTool"
+						UsePrecompiledHeader="0"
+					/>
+				</FileConfiguration>
+			</File>
+			<File
+				RelativePath="..\..\expat\xmltok_impl.h"
+				>
+			</File>
+			<File
+				RelativePath="..\..\expat\xmltok_ns.c"
+				>
+				<FileConfiguration
+					Name="Debug|Win32"
+					>
+					<Tool
+						Name="VCCLCompilerTool"
+						UsePrecompiledHeader="0"
+					/>
+				</FileConfiguration>
+				<FileConfiguration
+					Name="Release|Win32"
+					>
+					<Tool
+						Name="VCCLCompilerTool"
+						UsePrecompiledHeader="0"
+					/>
+				</FileConfiguration>
+			</File>
+		</Filter>
+		<Filter
+			Name="Resource Files"
+			Filter="rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe;resx;tiff;tif;png;wav"
+			UniqueIdentifier="{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}"
+			>
+		</Filter>
+		<Filter
+			Name="shared"
+			>
+			<File
+				RelativePath="..\..\source\Log.cpp"
+				>
+			</File>
+			<File
+				RelativePath="..\..\source\Log.h"
+				>
+			</File>
+			<File
+				RelativePath="..\..\source\MCLogger.cpp"
+				>
+			</File>
+			<File
+				RelativePath="..\..\source\MCLogger.h"
+				>
+			</File>
+			<File
+				RelativePath="..\..\source\StringUtils.cpp"
+				>
+			</File>
+			<File
+				RelativePath="..\..\source\StringUtils.h"
+				>
+			</File>
+			<Filter
+				Name="OSSupport"
+				>
+				<File
+					RelativePath="..\..\source\OSSupport\CriticalSection.cpp"
+					>
+				</File>
+				<File
+					RelativePath="..\..\source\OSSupport\CriticalSection.h"
+					>
+				</File>
+				<File
+					RelativePath="..\..\source\OSSupport\File.cpp"
+					>
+				</File>
+				<File
+					RelativePath="..\..\source\OSSupport\File.h"
+					>
+				</File>
+				<File
+					RelativePath="..\..\source\OSSupport\IsThread.cpp"
+					>
+				</File>
+				<File
+					RelativePath="..\..\source\OSSupport\IsThread.h"
+					>
+				</File>
+				<File
+					RelativePath="..\..\source\OSSupport\MakeDir.cpp"
+					>
+				</File>
+				<File
+					RelativePath="..\..\source\OSSupport\MakeDir.h"
+					>
+				</File>
+			</Filter>
+		</Filter>
+	</Files>
+	<Globals>
+	</Globals>
+</VisualStudioProject>

Tools/MemDumpAnalysis/MemDumpAnalysis.vcproj.user

@@ -0,0 +1,31 @@
+<?xml version="1.0" encoding="windows-1250"?>
+<VisualStudioUserFile
+	ProjectType="Visual C++"
+	Version="9,00"
+	ShowAllFiles="false"
+	>
+	<Configurations>
+		<Configuration
+			Name="Debug|Win32"
+			>
+			<DebugSettings
+				Command="$(TargetPath)"
+				WorkingDirectory="$(TargetDir)"
+				CommandArguments=""
+				Attach="false"
+				DebuggerType="3"
+			/>
+		</Configuration>
+		<Configuration
+			Name="Release|Win32"
+			>
+			<DebugSettings
+				Command="$(TargetPath)"
+				WorkingDirectory="$(TargetDir)"
+				CommandArguments=""
+				Attach="false"
+				DebuggerType="3"
+			/>
+		</Configuration>
+	</Configurations>
+</VisualStudioUserFile>

Tools/MemDumpAnalysis/targetver.h

@@ -0,0 +1,25 @@
+
+// targetver.h
+
+// Used by MSWin builds to target the appropriate OS version
+
+
+
+
+
+#pragma once
+
+// The following macros define the minimum required platform.  The minimum required platform
+// is the earliest version of Windows, Internet Explorer etc. that has the necessary features to run 
+// your application.  The macros work by enabling all features available on platform versions up to and 
+// including the version specified.
+
+// Modify the following defines if you have to target a platform prior to the ones specified below.
+// Refer to MSDN for the latest info on corresponding values for different platforms.
+#ifndef _WIN32_WINNT            // Specifies that the minimum required platform is Windows Vista.
+#define _WIN32_WINNT 0x0600     // Change this to the appropriate value to target other versions of Windows.
+#endif
+
+
+
+