path: root/indra/newview/llappviewerwin32.cpp

/**
 * @file llappviewerwin32.cpp
 * @brief The LLAppViewerWin32 class definitions
 *
 * $LicenseInfo:firstyear=2007&license=viewerlgpl$
 * Second Life Viewer Source Code
 * Copyright (C) 2010, Linden Research, Inc.
 * 
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation;
 * version 2.1 of the License only.
 * 
 * This library 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
 * Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 * 
 * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
 * $/LicenseInfo$
 */ 

#include "llviewerprecompiledheaders.h"

#ifdef INCLUDE_VLD
#include "vld.h"
#endif
#include "llwin32headers.h"

#include "llwindowwin32.h" // *FIX: for setting gIconResource.

#include "llappviewerwin32.h"

#include "llgl.h"
#include "res/resource.h" // *FIX: for setting gIconResource.

#include <fcntl.h>		//_O_APPEND
#include <io.h>			//_open_osfhandle()
#include <WERAPI.H>		// for WerAddExcludedApplication()
#include <process.h>	// _spawnl()
#include <tchar.h>		// For TCHAR support

#include "llviewercontrol.h"
#include "lldxhardware.h"

#include "nvapi/nvapi.h"
#include "nvapi/NvApiDriverSettings.h"

#include <stdlib.h>

#include "llweb.h"

#include "llviewernetwork.h"
#include "llmd5.h"
#include "llfindlocale.h"

#include "llcommandlineparser.h"
#include "lltrans.h"

#ifndef LL_RELEASE_FOR_DOWNLOAD
#include "llwindebug.h"
#endif

#include "stringize.h"
#include "lldir.h"
#include "llerrorcontrol.h"

#include <fstream>
#include <exception>

// Bugsplat (http://bugsplat.com) crash reporting tool
#ifdef LL_BUGSPLAT
#include "BugSplat.h"
#include "json/reader.h"                 // JsonCpp
#include "llagent.h"                // for agent location
#include "llviewerregion.h"
#include "llvoavatarself.h"         // for agent name

namespace
{
    // MiniDmpSender's constructor is defined to accept __wchar_t* instead of
    // plain wchar_t*. That said, wunder() returns std::basic_string<__wchar_t>,
    // NOT plain __wchar_t*, despite the apparent convenience. Calling
    // wunder(something).c_str() as an argument expression is fine: that
    // std::basic_string instance will survive until the function returns.
    // Calling c_str() on a std::basic_string local to wunder() would be
    // Undefined Behavior: we'd be left with a pointer into a destroyed
    // std::basic_string instance. But we can do that with a macro...
    #define WCSTR(string) wunder(string).c_str()

    // It would be nice if, when wchar_t is the same as __wchar_t, this whole
    // function would optimize away. However, we use it only for the arguments
    // to the BugSplat API -- a handful of calls.
    inline std::basic_string<__wchar_t> wunder(const std::wstring& str)
    {
        return { str.begin(), str.end() };
    }

    // when what we have in hand is a std::string, convert from UTF-8 using
    // specific wstringize() overload
    inline std::basic_string<__wchar_t> wunder(const std::string& str)
    {
        return wunder(wstringize(str));
    }

    // Irritatingly, MiniDmpSender::setCallback() is defined to accept a
    // classic-C function pointer instead of an arbitrary C++ callable. If it
    // did accept a modern callable, we could pass a lambda that binds our
    // MiniDmpSender pointer. As things stand, though, we must define an
    // actual function and store the pointer statically.
    static MiniDmpSender *sBugSplatSender = nullptr;

    bool bugsplatSendLog(UINT nCode, LPVOID lpVal1, LPVOID lpVal2)
    {
        if (nCode == MDSCB_EXCEPTIONCODE)
        {
            // send the main viewer log file, one per instance
            // widen to wstring, convert to __wchar_t, then pass c_str()
            sBugSplatSender->sendAdditionalFile(
                WCSTR(LLError::logFileName()));

            // second instance does not have some log files
            // TODO: This needs fixing, if each instance now has individual logs,
            // same should be made true for static debug files
            if (!LLAppViewer::instance()->isSecondInstance())
            {
                sBugSplatSender->sendAdditionalFile(
                    WCSTR(*LLAppViewer::instance()->getStaticDebugFile()));
            }

            sBugSplatSender->sendAdditionalFile(
                WCSTR(gDirUtilp->getExpandedFilename(LL_PATH_USER_SETTINGS, "settings.xml")));

            // We don't have an email address for any user. Hijack this
            // metadata field for the platform identifier.
            sBugSplatSender->setDefaultUserEmail(
                WCSTR(STRINGIZE(LLOSInfo::instance().getOSStringSimple() << " ("
                                << ADDRESS_SIZE << "-bit)")));

            if (gAgentAvatarp)
            {
                // user name, when we have it
                sBugSplatSender->setDefaultUserName(WCSTR(gAgentAvatarp->getFullname()));

                sBugSplatSender->sendAdditionalFile(
                    WCSTR(gDirUtilp->getExpandedFilename(LL_PATH_PER_SL_ACCOUNT, "settings_per_account.xml")));
            }

            // LL_ERRS message, when there is one
            sBugSplatSender->setDefaultUserDescription(WCSTR(LLError::getFatalMessage()));

            if (gAgent.getRegion())
            {
                // region location, when we have it
                LLVector3 loc = gAgent.getPositionAgent();
                sBugSplatSender->resetAppIdentifier(
                    WCSTR(STRINGIZE(gAgent.getRegion()->getName()
                                    << '/' << loc.mV[0]
                                    << '/' << loc.mV[1]
                                    << '/' << loc.mV[2])));
            }
        } // MDSCB_EXCEPTIONCODE

        return false;
    }
}
#endif // LL_BUGSPLAT

namespace
{
    void (*gOldTerminateHandler)() = NULL;
}

static void exceptionTerminateHandler()
{
	// reinstall default terminate() handler in case we re-terminate.
	if (gOldTerminateHandler) std::set_terminate(gOldTerminateHandler);
	// treat this like a regular viewer crash, with nice stacktrace etc.
    long *null_ptr;
    null_ptr = 0;
    *null_ptr = 0xDEADBEEF; //Force an exception that will trigger breakpad.

	// we've probably been killed-off before now, but...
	gOldTerminateHandler(); // call old terminate() handler
}

LONG WINAPI catchallCrashHandler(EXCEPTION_POINTERS * /*ExceptionInfo*/)
{
	LL_WARNS() << "Hit last ditch-effort attempt to catch crash." << LL_ENDL;
	exceptionTerminateHandler();
	return 0;
}

// *FIX:Mani - This hack is to fix a linker issue with libndofdev.lib
// The lib was compiled under VS2005 - in VS2003 we need to remap assert
#ifdef LL_DEBUG
#ifdef LL_MSVC7 
extern "C" {
    void _wassert(const wchar_t * _Message, const wchar_t *_File, unsigned _Line)
    {
        LL_ERRS() << _Message << LL_ENDL;
    }
}
#endif
#endif

const std::string LLAppViewerWin32::sWindowClass = "Second Life";

/*
    This function is used to print to the command line a text message 
    describing the nvapi error and quits
*/
void nvapi_error(NvAPI_Status status)
{
    NvAPI_ShortString szDesc = {0};
	NvAPI_GetErrorMessage(status, szDesc);
	LL_WARNS() << szDesc << LL_ENDL;

	//should always trigger when asserts are enabled
	//llassert(status == NVAPI_OK);
}

// Create app mutex creates a unique global windows object. 
// If the object can be created it returns true, otherwise
// it returns false. The false result can be used to determine 
// if another instance of a second life app (this vers. or later)
// is running.
// *NOTE: Do not use this method to run a single instance of the app.
// This is intended to help debug problems with the cross-platform 
// locked file method used for that purpose.
bool create_app_mutex()
{
	bool result = true;
	LPCWSTR unique_mutex_name = L"SecondLifeAppMutex";
	HANDLE hMutex;
	hMutex = CreateMutex(NULL, TRUE, unique_mutex_name); 
	if(GetLastError() == ERROR_ALREADY_EXISTS) 
	{     
		result = false;
	}
	return result;
}

void ll_nvapi_init(NvDRSSessionHandle hSession)
{
	// (2) load all the system settings into the session
	NvAPI_Status status = NvAPI_DRS_LoadSettings(hSession);
	if (status != NVAPI_OK) 
	{
		nvapi_error(status);
		return;
	}

	NvAPI_UnicodeString profile_name;
	std::string app_name = LLTrans::getString("APP_NAME");
	llutf16string w_app_name = utf8str_to_utf16str(app_name);
	wsprintf(profile_name, L"%s", w_app_name.c_str());
	NvDRSProfileHandle hProfile = 0;
	// (3) Check if we already have an application profile for the viewer
	status = NvAPI_DRS_FindProfileByName(hSession, profile_name, &hProfile);
	if (status != NVAPI_OK && status != NVAPI_PROFILE_NOT_FOUND)
	{
		nvapi_error(status);
		return;
	}
	else if (status == NVAPI_PROFILE_NOT_FOUND)
	{
		// Don't have an application profile yet - create one
		LL_INFOS() << "Creating NVIDIA application profile" << LL_ENDL;

		NVDRS_PROFILE profileInfo;
		profileInfo.version = NVDRS_PROFILE_VER;
		profileInfo.isPredefined = 0;
		wsprintf(profileInfo.profileName, L"%s", w_app_name.c_str());

		status = NvAPI_DRS_CreateProfile(hSession, &profileInfo, &hProfile);
		if (status != NVAPI_OK)
		{
			nvapi_error(status);
			return;
		}
	}

	// (4) Check if current exe is part of the profile
	std::string exe_name = gDirUtilp->getExecutableFilename();
	NVDRS_APPLICATION profile_application;
	profile_application.version = NVDRS_APPLICATION_VER;

	llutf16string w_exe_name = utf8str_to_utf16str(exe_name);
	NvAPI_UnicodeString profile_app_name;
	wsprintf(profile_app_name, L"%s", w_exe_name.c_str());

	status = NvAPI_DRS_GetApplicationInfo(hSession, hProfile, profile_app_name, &profile_application);
	if (status != NVAPI_OK && status != NVAPI_EXECUTABLE_NOT_FOUND)
	{
		nvapi_error(status);
		return;
	}
	else if (status == NVAPI_EXECUTABLE_NOT_FOUND)
	{
		LL_INFOS() << "Creating application for " << exe_name << " for NVIDIA application profile" << LL_ENDL;

		// Add this exe to the profile
		NVDRS_APPLICATION application;
		application.version = NVDRS_APPLICATION_VER;
		application.isPredefined = 0;
		wsprintf(application.appName, L"%s", w_exe_name.c_str());
		wsprintf(application.userFriendlyName, L"%s", w_exe_name.c_str());
		wsprintf(application.launcher, L"%s", w_exe_name.c_str());
		wsprintf(application.fileInFolder, L"%s", "");

		status = NvAPI_DRS_CreateApplication(hSession, hProfile, &application);
		if (status != NVAPI_OK)
		{
			nvapi_error(status);
			return;
		}

		// Save application in case we added one
		status = NvAPI_DRS_SaveSettings(hSession);
		if (status != NVAPI_OK)
		{
			nvapi_error(status);
			return;
		}
	}

	// load settings for querying 
	status = NvAPI_DRS_LoadSettings(hSession);
	if (status != NVAPI_OK)
	{
		nvapi_error(status);
		return;
	}

	//get the preferred power management mode for Second Life
	NVDRS_SETTING drsSetting = {0};
	drsSetting.version = NVDRS_SETTING_VER;
	status = NvAPI_DRS_GetSetting(hSession, hProfile, PREFERRED_PSTATE_ID, &drsSetting);
	if (status == NVAPI_SETTING_NOT_FOUND)
	{ //only override if the user hasn't specifically set this setting
		// (5) Specify that we want to enable maximum performance setting
		// first we fill the NVDRS_SETTING struct, then we call the function
		drsSetting.version = NVDRS_SETTING_VER;
		drsSetting.settingId = PREFERRED_PSTATE_ID;
		drsSetting.settingType = NVDRS_DWORD_TYPE;
		drsSetting.u32CurrentValue = PREFERRED_PSTATE_PREFER_MAX;
		status = NvAPI_DRS_SetSetting(hSession, hProfile, &drsSetting);
		if (status != NVAPI_OK) 
		{
			nvapi_error(status);
			return;
		}

        // (6) Now we apply (or save) our changes to the system
        status = NvAPI_DRS_SaveSettings(hSession);
        if (status != NVAPI_OK) 
        {
            nvapi_error(status);
            return;
        }
	}
	else if (status != NVAPI_OK)
	{
		nvapi_error(status);
		return;
	}
}

//#define DEBUGGING_SEH_FILTER 1
#if DEBUGGING_SEH_FILTER
#	define WINMAIN DebuggingWinMain
#else
#	define WINMAIN wWinMain
#endif

int APIENTRY WINMAIN(HINSTANCE hInstance,
                     HINSTANCE hPrevInstance,
                     PWSTR     pCmdLine,
                     int       nCmdShow)
{
    // Call Tracy first thing to have it allocate memory
    // https://github.com/wolfpld/tracy/issues/196
    LL_PROFILER_FRAME_END;
    LL_PROFILER_SET_THREAD_NAME("App");

	const S32 MAX_HEAPS = 255;
	DWORD heap_enable_lfh_error[MAX_HEAPS];
	S32 num_heaps = 0;
	
	LLWindowWin32::setDPIAwareness();

#if WINDOWS_CRT_MEM_CHECKS && !INCLUDE_VLD
	_CrtSetDbgFlag ( _CRTDBG_ALLOC_MEM_DF | _CRTDBG_LEAK_CHECK_DF ); // dump memory leaks on exit
#elif 0
	// Experimental - enable the low fragmentation heap
	// This results in a 2-3x improvement in opening a new Inventory window (which uses a large numebr of allocations)
	// Note: This won't work when running from the debugger unless the _NO_DEBUG_HEAP environment variable is set to 1

	// Enable to get mem debugging within visual studio.
#if LL_DEBUG
	_CrtSetDbgFlag(_CRTDBG_ALLOC_MEM_DF | _CRTDBG_LEAK_CHECK_DF);
#else
	_CrtSetDbgFlag(0); // default, just making explicit
	
	ULONG ulEnableLFH = 2;
	HANDLE* hHeaps = new HANDLE[MAX_HEAPS];
	num_heaps = GetProcessHeaps(MAX_HEAPS, hHeaps);
	for(S32 i = 0; i < num_heaps; i++)
	{
		bool success = HeapSetInformation(hHeaps[i], HeapCompatibilityInformation, &ulEnableLFH, sizeof(ulEnableLFH));
		if (success)
			heap_enable_lfh_error[i] = 0;
		else
			heap_enable_lfh_error[i] = GetLastError();
	}
#endif
#endif
	
	// *FIX: global
	gIconResource = MAKEINTRESOURCE(IDI_LL_ICON);

	LLAppViewerWin32* viewer_app_ptr = new LLAppViewerWin32(ll_convert_wide_to_string(pCmdLine).c_str());

	gOldTerminateHandler = std::set_terminate(exceptionTerminateHandler);

	// Set a debug info flag to indicate if multiple instances are running.
	bool found_other_instance = !create_app_mutex();
	gDebugInfo["FoundOtherInstanceAtStartup"] = LLSD::Boolean(found_other_instance);

	bool ok = viewer_app_ptr->init();
	if(!ok)
	{
		LL_WARNS() << "Application init failed." << LL_ENDL;
		return -1;
	}

    NvDRSSessionHandle hSession = 0;
    static LLCachedControl<bool> use_nv_api(gSavedSettings, "NvAPICreateApplicationProfile", true);
    if (use_nv_api)
    {
        NvAPI_Status status;

        // Initialize NVAPI
        status = NvAPI_Initialize();

        if (status == NVAPI_OK)
        {
            // Create the session handle to access driver settings
            status = NvAPI_DRS_CreateSession(&hSession);
            if (status != NVAPI_OK)
            {
                nvapi_error(status);
            }
            else
            {
                //override driver setting as needed
                ll_nvapi_init(hSession);
            }
        }
    }

	// Have to wait until after logging is initialized to display LFH info
	if (num_heaps > 0)
	{
		LL_INFOS() << "Attempted to enable LFH for " << num_heaps << " heaps." << LL_ENDL;
		for(S32 i = 0; i < num_heaps; i++)
		{
			if (heap_enable_lfh_error[i])
			{
				LL_INFOS() << "  Failed to enable LFH for heap: " << i << " Error: " << heap_enable_lfh_error[i] << LL_ENDL;
			}
		}
	}
	
	// Run the application main loop
	while (! viewer_app_ptr->frame()) 
	{}

	if (!LLApp::isError())
	{
		//
		// We don't want to do cleanup here if the error handler got called -
		// the assumption is that the error handler is responsible for doing
		// app cleanup if there was a problem.
		//
#if WINDOWS_CRT_MEM_CHECKS
		LL_INFOS() << "CRT Checking memory:" << LL_ENDL;
		if (!_CrtCheckMemory())
		{
			LL_WARNS() << "_CrtCheckMemory() failed at prior to cleanup!" << LL_ENDL;
		}
		else
		{
			LL_INFOS() << " No corruption detected." << LL_ENDL;
		}
#endif

		gGLActive = TRUE;

		viewer_app_ptr->cleanup();

#if WINDOWS_CRT_MEM_CHECKS
		LL_INFOS() << "CRT Checking memory:" << LL_ENDL;
		if (!_CrtCheckMemory())
		{
			LL_WARNS() << "_CrtCheckMemory() failed after cleanup!" << LL_ENDL;
		}
		else
		{
			LL_INFOS() << " No corruption detected." << LL_ENDL;
		}
#endif

	}
	delete viewer_app_ptr;
	viewer_app_ptr = NULL;

	// (NVAPI) (6) We clean up. This is analogous to doing a free()
	if (hSession)
	{
		NvAPI_DRS_DestroySession(hSession);
		hSession = 0;
	}
	
	return 0;
}

#if DEBUGGING_SEH_FILTER
// The compiler doesn't like it when you use __try/__except blocks
// in a method that uses object destructors. Go figure.
// This winmain just calls the real winmain inside __try.
// The __except calls our exception filter function. For debugging purposes.
int APIENTRY wWinMain(HINSTANCE hInstance,
                     HINSTANCE hPrevInstance,
                     PWSTR     lpCmdLine,
                     int       nCmdShow)
{
    __try
    {
        WINMAIN(hInstance, hPrevInstance, lpCmdLine, nCmdShow);
    }
    __except( viewer_windows_exception_handler( GetExceptionInformation() ) )
    {
        _tprintf( _T("Exception handled.\n") );
    }
}
#endif

void LLAppViewerWin32::disableWinErrorReporting()
{
	std::string executable_name = gDirUtilp->getExecutableFilename();

	if( S_OK == WerAddExcludedApplication( utf8str_to_utf16str(executable_name).c_str(), FALSE ) )
	{
		LL_INFOS() << "WerAddExcludedApplication() succeeded for " << executable_name << LL_ENDL;
	}
	else
	{
		LL_INFOS() << "WerAddExcludedApplication() failed for " << executable_name << LL_ENDL;
	}
}

const S32 MAX_CONSOLE_LINES = 7500;
// Only defined in newer SDKs than we currently use
#ifndef ENABLE_VIRTUAL_TERMINAL_PROCESSING
#define ENABLE_VIRTUAL_TERMINAL_PROCESSING 4
#endif

namespace {

void set_stream(const char* desc, FILE* fp, DWORD handle_id, const char* name, const char* mode="w");

bool create_console()
{
    // allocate a console for this app
    const bool isConsoleAllocated = AllocConsole();

    if (isConsoleAllocated)
    {
        // set the screen buffer to be big enough to let us scroll text
        CONSOLE_SCREEN_BUFFER_INFO coninfo;
        GetConsoleScreenBufferInfo(GetStdHandle(STD_OUTPUT_HANDLE), &coninfo);
        coninfo.dwSize.Y = MAX_CONSOLE_LINES;
        SetConsoleScreenBufferSize(GetStdHandle(STD_OUTPUT_HANDLE), coninfo.dwSize);

        // redirect unbuffered STDOUT to the console
        set_stream("stdout", stdout, STD_OUTPUT_HANDLE, "CONOUT$");
        // redirect unbuffered STDERR to the console
        set_stream("stderr", stderr, STD_ERROR_HANDLE, "CONOUT$");
        // redirect unbuffered STDIN to the console
        // Don't bother: our console is solely for log output. We never read stdin.
//      set_stream("stdin", stdin, STD_INPUT_HANDLE, "CONIN$", "r");
    }

    return isConsoleAllocated;
}

void set_stream(const char* desc, FILE* fp, DWORD handle_id, const char* name, const char* mode)
{
    // SL-13528: This code used to be based on
    // http://dslweb.nwnexus.com/~ast/dload/guicon.htm
    // (referenced in https://stackoverflow.com/a/191880).
    // But one of the comments on that StackOverflow answer points out that
    // assigning to *stdout or *stderr "probably doesn't even work with the
    // Universal CRT that was introduced in 2015," suggesting freopen_s()
    // instead. Code below is based on https://stackoverflow.com/a/55875595.
    auto std_handle = GetStdHandle(handle_id);
    if (std_handle == INVALID_HANDLE_VALUE)
    {
        LL_WARNS() << "create_console() failed to get " << desc << " handle" << LL_ENDL;
    }
    else
    {
        if (mode == std::string("w"))
        {
            // Enable color processing on Windows 10 console windows.
            DWORD dwMode = 0;
            GetConsoleMode(std_handle, &dwMode);
            dwMode |= ENABLE_VIRTUAL_TERMINAL_PROCESSING;
            SetConsoleMode(std_handle, dwMode);
        }
        // Redirect the passed fp to the console.
        FILE* ignore;
        if (freopen_s(&ignore, name, mode, fp) == 0)
        {
            // use unbuffered I/O
            setvbuf( fp, NULL, _IONBF, 0 );
        }
    }
}

} // anonymous namespace

LLAppViewerWin32::LLAppViewerWin32(const char* cmd_line) :
	mCmdLine(cmd_line),
	mIsConsoleAllocated(false)
{
}

LLAppViewerWin32::~LLAppViewerWin32()
{
}

bool LLAppViewerWin32::init()
{
	// Platform specific initialization.
	
	// Turn off Windows Error Reporting
	// (Don't send our data to Microsoft--at least until we are Logo approved and have a way
	// of getting the data back from them.)
	//
	// LL_INFOS() << "Turning off Windows error reporting." << LL_ENDL;
	disableWinErrorReporting();

#ifndef LL_RELEASE_FOR_DOWNLOAD
	// Merely requesting the LLSingleton instance initializes it.
	LLWinDebug::instance();
#endif

#if LL_SEND_CRASH_REPORTS
#if ! defined(LL_BUGSPLAT)
#pragma message("Building without BugSplat")

#else // LL_BUGSPLAT
#pragma message("Building with BugSplat")

    if (!isSecondInstance())
    {
        // Cleanup previous session
        std::string log_file = gDirUtilp->getExpandedFilename(LL_PATH_LOGS, "bugsplat.log");
        LLFile::remove(log_file, ENOENT);
    }

    // Win7 is no longer supported
    bool is_win_7_or_below = LLOSInfo::getInstance()->mMajorVer <= 6 && LLOSInfo::getInstance()->mMajorVer <= 1;

    if (!is_win_7_or_below)
    {
        std::string build_data_fname(
            gDirUtilp->getExpandedFilename(LL_PATH_EXECUTABLE, "build_data.json"));
        // Use llifstream instead of std::ifstream because LL_PATH_EXECUTABLE
        // could contain non-ASCII characters, which std::ifstream doesn't handle.
        llifstream inf(build_data_fname.c_str());
        if (!inf.is_open())
        {
            LL_WARNS("BUGSPLAT") << "Can't initialize BugSplat, can't read '" << build_data_fname
                << "'" << LL_ENDL;
        }
        else
        {
            Json::Reader reader;
            Json::Value build_data;
            if (!reader.parse(inf, build_data, false)) // don't collect comments
            {
                // gah, the typo is baked into Json::Reader API
                LL_WARNS("BUGSPLAT") << "Can't initialize BugSplat, can't parse '" << build_data_fname
                    << "': " << reader.getFormatedErrorMessages() << LL_ENDL;
            }
            else
            {
                Json::Value BugSplat_DB = build_data["BugSplat DB"];
                if (!BugSplat_DB)
                {
                    LL_WARNS("BUGSPLAT") << "Can't initialize BugSplat, no 'BugSplat DB' entry in '"
                        << build_data_fname << "'" << LL_ENDL;
                }
                else
                {
                    // Got BugSplat_DB, onward!
                    std::wstring version_string(WSTRINGIZE(LL_VIEWER_VERSION_MAJOR << '.' <<
                        LL_VIEWER_VERSION_MINOR << '.' <<
                        LL_VIEWER_VERSION_PATCH << '.' <<
                        LL_VIEWER_VERSION_BUILD));

                    DWORD dwFlags = MDSF_NONINTERACTIVE | // automatically submit report without prompting
                        MDSF_PREVENTHIJACKING; // disallow swiping Exception filter

                    bool needs_log_file = !isSecondInstance();
                    LL_DEBUGS("BUGSPLAT");
                    if (needs_log_file)
                    {
                        // Startup only!
                        LL_INFOS("BUGSPLAT") << "Engaged BugSplat logging to bugsplat.log" << LL_ENDL;
                        dwFlags |= MDSF_LOGFILE | MDSF_LOG_VERBOSE;
                    }
                    LL_ENDL;

                    // have to convert normal wide strings to strings of __wchar_t
                    sBugSplatSender = new MiniDmpSender(
                        WCSTR(BugSplat_DB.asString()),
                        WCSTR(LL_TO_WSTRING(LL_VIEWER_CHANNEL)),
                        WCSTR(version_string),
                        nullptr,              // szAppIdentifier -- set later
                        dwFlags);
                    sBugSplatSender->setCallback(bugsplatSendLog);

                    LL_DEBUGS("BUGSPLAT");
                    if (needs_log_file)
                    {
                        // Log file will be created in %TEMP%, but it will be moved into logs folder in case of crash
                        std::string log_file = gDirUtilp->getExpandedFilename(LL_PATH_LOGS, "bugsplat.log");
                        sBugSplatSender->setLogFilePath(WCSTR(log_file));
                    }
                    LL_ENDL;

                    // engage stringize() overload that converts from wstring
                    LL_INFOS("BUGSPLAT") << "Engaged BugSplat(" << LL_TO_STRING(LL_VIEWER_CHANNEL)
                        << ' ' << stringize(version_string) << ')' << LL_ENDL;
                } // got BugSplat_DB
            } // parsed build_data.json
        } // opened build_data.json
    } // !is_win_7_or_below
#endif // LL_BUGSPLAT
#endif // LL_SEND_CRASH_REPORTS

	bool success = LLAppViewer::init();

    return success;
}

bool LLAppViewerWin32::cleanup()
{
	bool result = LLAppViewer::cleanup();

	gDXHardware.cleanup();

	if (mIsConsoleAllocated)
	{
		FreeConsole();
		mIsConsoleAllocated = false;
	}

	return result;
}

void LLAppViewerWin32::reportCrashToBugsplat(void* pExcepInfo)
{
#if defined(LL_BUGSPLAT)
    if (sBugSplatSender)
    {
        sBugSplatSender->createReport((EXCEPTION_POINTERS*)pExcepInfo);
    }
#endif // LL_BUGSPLAT
}

void LLAppViewerWin32::initLoggingAndGetLastDuration()
{
	LLAppViewer::initLoggingAndGetLastDuration();
}

void LLAppViewerWin32::initConsole()
{
	// pop up debug console
	mIsConsoleAllocated = create_console();
	return LLAppViewer::initConsole();
}

void write_debug_dx(const char* str)
{
	std::string value = gDebugInfo["DXInfo"].asString();
	value += str;
	gDebugInfo["DXInfo"] = value;
}

void write_debug_dx(const std::string& str)
{
	write_debug_dx(str.c_str());
}

bool LLAppViewerWin32::initHardwareTest()
{
	//
	// Do driver verification and initialization based on DirectX
	// hardware polling and driver versions
	//
	if (TRUE == gSavedSettings.getBOOL("ProbeHardwareOnStartup") && FALSE == gSavedSettings.getBOOL("NoHardwareProbe"))
	{
		// per DEV-11631 - disable hardware probing for everything
		// but vram.
		BOOL vram_only = TRUE;

		LLSplashScreen::update(LLTrans::getString("StartupDetectingHardware"));

		LL_DEBUGS("AppInit") << "Attempting to poll DirectX for hardware info" << LL_ENDL;
		gDXHardware.setWriteDebugFunc(write_debug_dx);
		BOOL probe_ok = gDXHardware.getInfo(vram_only);

		if (!probe_ok
			&& gWarningSettings.getBOOL("AboutDirectX9"))
		{
			LL_WARNS("AppInit") << "DirectX probe failed, alerting user." << LL_ENDL;

			// Warn them that runnin without DirectX 9 will
			// not allow us to tell them about driver issues
			std::ostringstream msg;
			msg << LLTrans::getString ("MBNoDirectX");
			S32 button = OSMessageBox(
				msg.str(),
				LLTrans::getString("MBWarning"),
				OSMB_YESNO);
			if (OSBTN_NO== button)
			{
				LL_INFOS("AppInit") << "User quitting after failed DirectX 9 detection" << LL_ENDL;
				LLWeb::loadURLExternal("http://secondlife.com/support/", false);
				return false;
			}
			gWarningSettings.setBOOL("AboutDirectX9", FALSE);
		}
		LL_DEBUGS("AppInit") << "Done polling DirectX for hardware info" << LL_ENDL;

		// Only probe once after installation
		gSavedSettings.setBOOL("ProbeHardwareOnStartup", FALSE);

		// Disable so debugger can work
		std::string splash_msg;
		LLStringUtil::format_map_t args;
		args["[APP_NAME]"] = LLAppViewer::instance()->getSecondLifeTitle();
		splash_msg = LLTrans::getString("StartupLoading", args);

		LLSplashScreen::update(splash_msg);
	}

	if (!restoreErrorTrap())
	{
		LL_WARNS("AppInit") << " Someone took over my exception handler (post hardware probe)!" << LL_ENDL;
	}

	if (gGLManager.mVRAM == 0)
	{
		gGLManager.mVRAM = gDXHardware.getVRAM();
	}

	LL_INFOS("AppInit") << "Detected VRAM: " << gGLManager.mVRAM << LL_ENDL;

	return true;
}

bool LLAppViewerWin32::initParseCommandLine(LLCommandLineParser& clp)
{
	if (!clp.parseCommandLineString(mCmdLine))
	{
		return false;
	}

	// Find the system language.
	FL_Locale *locale = NULL;
	FL_Success success = FL_FindLocale(&locale, FL_MESSAGES);
	if (success != 0)
	{
		if (success >= 2 && locale->lang) // confident!
		{
			LL_INFOS("AppInit") << "Language: " << ll_safe_string(locale->lang) << LL_ENDL;
			LL_INFOS("AppInit") << "Location: " << ll_safe_string(locale->country) << LL_ENDL;
			LL_INFOS("AppInit") << "Variant: " << ll_safe_string(locale->variant) << LL_ENDL;
			LLControlVariable* c = gSavedSettings.getControl("SystemLanguage");
			if(c)
			{
				c->setValue(std::string(locale->lang), false);
			}
		}
	}
	FL_FreeLocale(&locale);

	return true;
}

bool LLAppViewerWin32::beingDebugged()
{
    return IsDebuggerPresent();
}

bool LLAppViewerWin32::restoreErrorTrap()
{	
	return true; // we don't check for handler collisions on windows, so just say they're ok
}

//virtual
bool LLAppViewerWin32::sendURLToOtherInstance(const std::string& url)
{
	wchar_t window_class[256]; /* Flawfinder: ignore */   // Assume max length < 255 chars.
	mbstowcs(window_class, sWindowClass.c_str(), 255);
	window_class[255] = 0;
	// Use the class instead of the window name.
	HWND other_window = FindWindow(window_class, NULL);

	if (other_window != NULL)
	{
		LL_DEBUGS() << "Found other window with the name '" << getWindowTitle() << "'" << LL_ENDL;
		COPYDATASTRUCT cds;
		const S32 SLURL_MESSAGE_TYPE = 0;
		cds.dwData = SLURL_MESSAGE_TYPE;
		cds.cbData = url.length() + 1;
		cds.lpData = (void*)url.c_str();

		LRESULT msg_result = SendMessage(other_window, WM_COPYDATA, NULL, (LPARAM)&cds);
		LL_DEBUGS() << "SendMessage(WM_COPYDATA) to other window '" 
				 << getWindowTitle() << "' returned " << msg_result << LL_ENDL;
		return true;
	}
	return false;
}


std::string LLAppViewerWin32::generateSerialNumber()
{
	char serial_md5[MD5HEX_STR_SIZE];		// Flawfinder: ignore
	serial_md5[0] = 0;

	DWORD serial = 0;
	DWORD flags = 0;
	BOOL success = GetVolumeInformation(
			L"C:\\",
			NULL,		// volume name buffer
			0,			// volume name buffer size
			&serial,	// volume serial
			NULL,		// max component length
			&flags,		// file system flags
			NULL,		// file system name buffer
			0);			// file system name buffer size
	if (success)
	{
		LLMD5 md5;
		md5.update( (unsigned char*)&serial, sizeof(DWORD));
		md5.finalize();
		md5.hex_digest(serial_md5);
	}
	else
	{
		LL_WARNS() << "GetVolumeInformation failed" << LL_ENDL;
	}
	return serial_md5;
}