summaryrefslogtreecommitdiff
path: root/indra/newview/llappviewerwin32.cpp
blob: 3cf3c739d942b27a3205027018ce8526bcae6491 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
/**
 * @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 "llappviewerwin32.h"


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

#include <fcntl.h>		//_O_APPEND
#include <io.h>			//_open_osfhandle()
#include <errorrep.h>	// for AddERExcludedApplicationA()
#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 "llsecondlifeurls.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


// *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)
    {
        llerrs << _Message << llendl;
    }
}
#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);
	llwarns << szDesc << llendl;

	//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());
	status = NvAPI_DRS_SetCurrentGlobalProfile(hSession, profile_name);
	if (status != NVAPI_OK)
	{
		nvapi_error(status);
		return;
	}

	// (3) Obtain the current profile. 
	NvDRSProfileHandle hProfile = 0;
	status = NvAPI_DRS_GetCurrentGlobalProfile(hSession, &hProfile);
	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
		// (4) Specify that we want the VSYNC disabled 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;
		}
	}
	else if (status != NVAPI_OK)
	{
		nvapi_error(status);
		return;
	}

	

	// (5) Now we apply (or save) our changes to the system
	status = NvAPI_DRS_SaveSettings(hSession);
	if (status != NVAPI_OK) 
	{
		nvapi_error(status);
	}
}

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

int APIENTRY WINMAIN(HINSTANCE hInstance,
                     HINSTANCE hPrevInstance,
                     LPSTR     lpCmdLine,
                     int       nCmdShow)
{
#ifdef INCLUDE_VLD
	// only works for debug builds (hard coded into vld.h)
	#ifdef _DEBUG
		// start with Visual Leak Detector turned off
		VLDGlobalDisable();
	#endif // _DEBUG
#endif // INCLUDE_VLD

	const S32 MAX_HEAPS = 255;
	DWORD heap_enable_lfh_error[MAX_HEAPS];
	S32 num_heaps = 0;
	
#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(lpCmdLine);
	
	viewer_app_ptr->setErrorHandler(LLAppViewer::handleViewerCrash);

	// 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)
	{
		llwarns << "Application init failed." << llendl;
		return -1;
	}
	
	NvAPI_Status status;
    
	// Initialize NVAPI
	status = NvAPI_Initialize();
	NvDRSSessionHandle hSession = 0;

    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)
	{
		llinfos << "Attempted to enable LFH for " << num_heaps << " heaps." << llendl;
		for(S32 i = 0; i < num_heaps; i++)
		{
			if (heap_enable_lfh_error[i])
			{
				llinfos << "  Failed to enable LFH for heap: " << i << " Error: " << heap_enable_lfh_error[i] << llendl;
			}
		}
	}
	
	// Run the application main loop
	if(!LLApp::isQuitting()) 
	{
		viewer_app_ptr->mainLoop();
	}

	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
    llinfos << "CRT Checking memory:" << llendflush;
	if (!_CrtCheckMemory())
	{
		llwarns << "_CrtCheckMemory() failed at prior to cleanup!" << llendflush;
	}
	else
	{
		llinfos << " No corruption detected." << llendflush;
	}
#endif
	
	gGLActive = TRUE;

	viewer_app_ptr->cleanup();
	
#if WINDOWS_CRT_MEM_CHECKS
    llinfos << "CRT Checking memory:" << llendflush;
	if (!_CrtCheckMemory())
	{
		llwarns << "_CrtCheckMemory() failed after cleanup!" << llendflush;
	}
	else
	{
		llinfos << " No corruption detected." << llendflush;
	}
#endif
	 
	}
	delete viewer_app_ptr;
	viewer_app_ptr = NULL;

	//start updater
	if(LLAppViewer::sUpdaterInfo)
	{
		_spawnl(_P_NOWAIT, LLAppViewer::sUpdaterInfo->mUpdateExePath.c_str(), LLAppViewer::sUpdaterInfo->mUpdateExePath.c_str(), LLAppViewer::sUpdaterInfo->mParams.str().c_str(), NULL);

		delete LLAppViewer::sUpdaterInfo ;
		LLAppViewer::sUpdaterInfo = 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 WinMain(HINSTANCE hInstance,
                     HINSTANCE hPrevInstance,
                     LPSTR     lpCmdLine,
                     int       nCmdShow)
{
    __try
    {
        WINMAIN(hInstance, hPrevInstance, lpCmdLine, nCmdShow);
    }
    __except( viewer_windows_exception_handler( GetExceptionInformation() ) )
    {
        _tprintf( _T("Exception handled.\n") );
    }
}
#endif

void LLAppViewerWin32::disableWinErrorReporting()
{
	const char win_xp_string[] = "Microsoft Windows XP";
	BOOL is_win_xp = ( getOSInfo().getOSString().substr(0, strlen(win_xp_string) ) == win_xp_string );		/* Flawfinder: ignore*/
	if( is_win_xp )
	{
		// Note: we need to use run-time dynamic linking, because load-time dynamic linking will fail
		// on systems that don't have the library installed (all non-Windows XP systems)
		HINSTANCE fault_rep_dll_handle = LoadLibrary(L"faultrep.dll");		/* Flawfinder: ignore */
		if( fault_rep_dll_handle )
		{
			pfn_ADDEREXCLUDEDAPPLICATIONA pAddERExcludedApplicationA  = (pfn_ADDEREXCLUDEDAPPLICATIONA) GetProcAddress(fault_rep_dll_handle, "AddERExcludedApplicationA");
			if( pAddERExcludedApplicationA )
			{

				// Strip the path off the name
				const char* executable_name = gDirUtilp->getExecutableFilename().c_str();

				if( 0 == pAddERExcludedApplicationA( executable_name ) )
				{
					U32 error_code = GetLastError();
					llinfos << "AddERExcludedApplication() failed with error code " << error_code << llendl;
				}
				else
				{
					llinfos << "AddERExcludedApplication() success for " << executable_name << llendl;
				}
			}
			FreeLibrary( fault_rep_dll_handle );
		}
	}
}

const S32 MAX_CONSOLE_LINES = 500;

void create_console()
{
	int h_con_handle;
	long l_std_handle;

	CONSOLE_SCREEN_BUFFER_INFO coninfo;
	FILE *fp;

	// allocate a console for this app
	AllocConsole();

	// set the screen buffer to be big enough to let us scroll text
	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
	l_std_handle = (long)GetStdHandle(STD_OUTPUT_HANDLE);
	h_con_handle = _open_osfhandle(l_std_handle, _O_TEXT);
	if (h_con_handle == -1)
	{
		llwarns << "create_console() failed to open stdout handle" << llendl;
	}
	else
	{
		fp = _fdopen( h_con_handle, "w" );
		*stdout = *fp;
		setvbuf( stdout, NULL, _IONBF, 0 );
	}

	// redirect unbuffered STDIN to the console
	l_std_handle = (long)GetStdHandle(STD_INPUT_HANDLE);
	h_con_handle = _open_osfhandle(l_std_handle, _O_TEXT);
	if (h_con_handle == -1)
	{
		llwarns << "create_console() failed to open stdin handle" << llendl;
	}
	else
	{
		fp = _fdopen( h_con_handle, "r" );
		*stdin = *fp;
		setvbuf( stdin, NULL, _IONBF, 0 );
	}

	// redirect unbuffered STDERR to the console
	l_std_handle = (long)GetStdHandle(STD_ERROR_HANDLE);
	h_con_handle = _open_osfhandle(l_std_handle, _O_TEXT);
	if (h_con_handle == -1)
	{
		llwarns << "create_console() failed to open stderr handle" << llendl;
	}
	else
	{
		fp = _fdopen( h_con_handle, "w" );
		*stderr = *fp;
		setvbuf( stderr, NULL, _IONBF, 0 );
	}
}

LLAppViewerWin32::LLAppViewerWin32(const char* cmd_line) :
    mCmdLine(cmd_line)
{
}

LLAppViewerWin32::~LLAppViewerWin32()
{
}

bool LLAppViewerWin32::init()
{
	// Platform specific initialization.
	
	// Turn off Windows XP 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.)
	//
	// llinfos << "Turning off Windows error reporting." << llendl;
	disableWinErrorReporting();

#ifndef LL_RELEASE_FOR_DOWNLOAD
	LLWinDebug::instance().init();
#endif

	return LLAppViewer::init();
}

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

	gDXHardware.cleanup();

	return result;
}

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

void LLAppViewerWin32::initConsole()
{
	// pop up debug console
	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 (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(DIRECTX_9_URL, 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::restoreErrorTrap()
{	
	return true;
	//return LLWinDebug::checkExceptionHandler();
}

void LLAppViewerWin32::handleCrashReporting(bool reportFreeze)
{
	const char* logger_name = "win_crash_logger.exe";
	std::string exe_path = gDirUtilp->getExecutableDir();
	exe_path += gDirUtilp->getDirDelimiter();
	exe_path += logger_name;

	const char* arg_str = logger_name;

	// *NOTE:Mani - win_crash_logger.exe no longer parses command line options.
	if(reportFreeze)
	{
		// Spawn crash logger.
		// NEEDS to wait until completion, otherwise log files will get smashed.
		_spawnl(_P_WAIT, exe_path.c_str(), arg_str, NULL);
	}
	else
	{
		_spawnl(_P_NOWAIT, exe_path.c_str(), arg_str, NULL);
	}
}

//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)
	{
		lldebugs << "Found other window with the name '" << getWindowTitle() << "'" << llendl;
		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);
		lldebugs << "SendMessage(WM_COPYDATA) to other window '" 
				 << getWindowTitle() << "' returned " << msg_result << llendl;
		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
	{
		llwarns << "GetVolumeInformation failed" << llendl;
	}
	return serial_md5;
}