browser/app/nsBrowserApp.cpp

   1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* This Source Code Form is subject to the terms of the Mozilla Public
   3  * License, v. 2.0. If a copy of the MPL was not distributed with this
   4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   5
   6 #include "nsXULAppAPI.h"
   7 #include "mozilla/AppData.h"
   8 #include "application.ini.h"
   9 #include "nsXPCOMGlue.h"
  10 #if defined(XP_WIN)
  11 #include <windows.h>
  12 #include <stdlib.h>
  13 #include <io.h>
  14 #include <fcntl.h>
  15 #elif defined(XP_UNIX)
  16 #include <sys/resource.h>
  17 #include <time.h>
  18 #include <unistd.h>
  19 #endif
  20
  21 #ifdef XP_MACOSX
  22 #include <mach/mach_time.h>
  23 #include "MacQuirks.h"
  24 #endif
  25
  26 #include <stdio.h>
  27 #include <stdarg.h>
  28 #include <time.h>
  29
  30 #include "nsCOMPtr.h"
  31 #include "nsIFile.h"
  32 #include "nsStringGlue.h"
  33
  34 // Easy access to a five second startup delay used to get
  35 // a debugger attached in the metro environment.
  36 // #define DEBUG_delay_start_metro
  37
  38 #ifdef XP_WIN
  39 // we want a wmain entry point
  40 #ifdef MOZ_ASAN
  41 // ASAN requires firefox.exe to be built with -MD, and it's OK if we don't
  42 // support Windows XP SP2 in ASAN builds.
  43 #define XRE_DONT_SUPPORT_XPSP2
  44 #endif
  45 #include "nsWindowsWMain.cpp"
  46 #define snprintf _snprintf
  47 #define strcasecmp _stricmp
  48 #endif
  49 #include "BinaryPath.h"
  50
  51 #include "nsXPCOMPrivate.h" // for MAXPATHLEN and XPCOM_DLL
  52
  53 #include "mozilla/Telemetry.h"
  54 #include "mozilla/WindowsDllBlocklist.h"
  55
  56 using namespace mozilla;
  57
  58 #ifdef XP_MACOSX
  59 #define kOSXResourcesFolder "Resources"
  60 #endif
  61 #define kDesktopFolder "browser"
  62 #define kMetroFolder "metro"
  63 #define kMetroAppIniFilename "metroapp.ini"
  64 #ifdef XP_WIN
  65 #define kMetroTestFile "tests.ini"
  66 const char* kMetroConsoleIdParam = "testconsoleid=";
  67 #endif
  68
  69 static void Output(const char *fmt, ... )
  70 {
  71   va_list ap;
  72   va_start(ap, fmt);
  73
  74 #ifndef XP_WIN
  75   vfprintf(stderr, fmt, ap);
  76 #else
  77   char msg[2048];
  78   vsnprintf_s(msg, _countof(msg), _TRUNCATE, fmt, ap);
  79
  80   wchar_t wide_msg[2048];
  81   MultiByteToWideChar(CP_UTF8,
  82                       0,
  83                       msg,
  84                       -1,
  85                       wide_msg,
  86                       _countof(wide_msg));
  87 #if MOZ_WINCONSOLE
  88   fwprintf_s(stderr, wide_msg);
  89 #else
  90   // Linking user32 at load-time interferes with the DLL blocklist (bug 932100).
  91   // This is a rare codepath, so we can load user32 at run-time instead.
  92   HMODULE user32 = LoadLibraryW(L"user32.dll");
  93   if (user32) {
  94     decltype(MessageBoxW)* messageBoxW =
  95       (decltype(MessageBoxW)*) GetProcAddress(user32, "MessageBoxW");
  96     if (messageBoxW) {
  97       messageBoxW(nullptr, wide_msg, L"Firefox", MB_OK
  98                                                | MB_ICONERROR
  99                                                | MB_SETFOREGROUND);
 100     }
 101     FreeLibrary(user32);
 102   }
 103 #endif
 104 #endif
 105
 106   va_end(ap);
 107 }
 108
 109 /**
 110  * Return true if |arg| matches the given argument name.
 111  */
 112 static bool IsArg(const char* arg, const char* s)
 113 {
 114   if (*arg == '-')
 115   {
 116     if (*++arg == '-')
 117       ++arg;
 118     return !strcasecmp(arg, s);
 119   }
 120
 121 #if defined(XP_WIN)
 122   if (*arg == '/')
 123     return !strcasecmp(++arg, s);
 124 #endif
 125
 126   return false;
 127 }
 128
 129 #if defined(XP_WIN) && defined(MOZ_METRO)
 130 /*
 131  * AttachToTestHarness - Windows helper for when we are running
 132  * in the immersive environment. Firefox is launched by Windows in
 133  * response to a request by metrotestharness, which is launched by
 134  * runtests.py. As such stdout in fx doesn't point to the right
 135  * stream. This helper touches up stdout such that test output gets
 136  * routed to a named pipe metrotestharness creates and dumps to its
 137  * stdout.
 138  */
 139 static void AttachToTestHarness()
 140 {
 141   // attach to the metrotestharness named logging pipe
 142   HANDLE winOut = CreateFileA("\\\\.\\pipe\\metrotestharness",
 143                               GENERIC_WRITE,
 144                               FILE_SHARE_WRITE, 0,
 145                               OPEN_EXISTING, 0, 0);
 146
 147   if (winOut == INVALID_HANDLE_VALUE) {
 148     OutputDebugStringW(L"Could not create named logging pipe.\n");
 149     return;
 150   }
 151
 152   // Set the c runtime handle
 153   int stdOut = _open_osfhandle((intptr_t)winOut, _O_APPEND);
 154   if (stdOut == -1) {
 155     OutputDebugStringW(L"Could not open c-runtime handle.\n");
 156     return;
 157   }
 158   FILE *fp = _fdopen(stdOut, "a");
 159   *stdout = *fp;
 160 }
 161 #endif
 162
 163 XRE_GetFileFromPathType XRE_GetFileFromPath;
 164 XRE_CreateAppDataType XRE_CreateAppData;
 165 XRE_FreeAppDataType XRE_FreeAppData;
 166 XRE_TelemetryAccumulateType XRE_TelemetryAccumulate;
 167 XRE_StartupTimelineRecordType XRE_StartupTimelineRecord;
 168 XRE_mainType XRE_main;
 169 XRE_StopLateWriteChecksType XRE_StopLateWriteChecks;
 170
 171 static const nsDynamicFunctionLoad kXULFuncs[] = {
 172     { "XRE_GetFileFromPath", (NSFuncPtr*) &XRE_GetFileFromPath },
 173     { "XRE_CreateAppData", (NSFuncPtr*) &XRE_CreateAppData },
 174     { "XRE_FreeAppData", (NSFuncPtr*) &XRE_FreeAppData },
 175     { "XRE_TelemetryAccumulate", (NSFuncPtr*) &XRE_TelemetryAccumulate },
 176     { "XRE_StartupTimelineRecord", (NSFuncPtr*) &XRE_StartupTimelineRecord },
 177     { "XRE_main", (NSFuncPtr*) &XRE_main },
 178     { "XRE_StopLateWriteChecks", (NSFuncPtr*) &XRE_StopLateWriteChecks },
 179     { nullptr, nullptr }
 180 };
 181
 182 static int do_main(int argc, char* argv[], nsIFile *xreDirectory)
 183 {
 184   nsCOMPtr<nsIFile> appini;
 185   nsresult rv;
 186   uint32_t mainFlags = 0;
 187
 188   // Allow firefox.exe to launch XULRunner apps via -app <application.ini>
 189   // Note that -app must be the *first* argument.
 190   const char *appDataFile = getenv("XUL_APP_FILE");
 191   if (appDataFile && *appDataFile) {
 192     rv = XRE_GetFileFromPath(appDataFile, getter_AddRefs(appini));
 193     if (NS_FAILED(rv)) {
 194       Output("Invalid path found: '%s'", appDataFile);
 195       return 255;
 196     }
 197   }
 198   else if (argc > 1 && IsArg(argv[1], "app")) {
 199     if (argc == 2) {
 200       Output("Incorrect number of arguments passed to -app");
 201       return 255;
 202     }
 203
 204     rv = XRE_GetFileFromPath(argv[2], getter_AddRefs(appini));
 205     if (NS_FAILED(rv)) {
 206       Output("application.ini path not recognized: '%s'", argv[2]);
 207       return 255;
 208     }
 209
 210     char appEnv[MAXPATHLEN];
 211     snprintf(appEnv, MAXPATHLEN, "XUL_APP_FILE=%s", argv[2]);
 212     if (putenv(appEnv)) {
 213       Output("Couldn't set %s.\n", appEnv);
 214       return 255;
 215     }
 216     argv[2] = argv[0];
 217     argv += 2;
 218     argc -= 2;
 219   }
 220
 221   if (appini) {
 222     nsXREAppData *appData;
 223     rv = XRE_CreateAppData(appini, &appData);
 224     if (NS_FAILED(rv)) {
 225       Output("Couldn't read application.ini");
 226       return 255;
 227     }
 228     // xreDirectory already has a refcount from NS_NewLocalFile
 229     appData->xreDirectory = xreDirectory;
 230     int result = XRE_main(argc, argv, appData, mainFlags);
 231     XRE_FreeAppData(appData);
 232     return result;
 233   }
 234
 235   bool metroOnDesktop = false;
 236
 237 #ifdef MOZ_METRO
 238   if (argc > 1) {
 239     // This command-line flag is passed to our executable when it is to be
 240     // launched in metro mode (i.e. our EXE is registered as the default
 241     // browser and the user has tapped our EXE's tile)
 242     if (IsArg(argv[1], "ServerName:DefaultBrowserServer")) {
 243       mainFlags = XRE_MAIN_FLAG_USE_METRO;
 244       argv[1] = argv[0];
 245       argv++;
 246       argc--;
 247     } else if (IsArg(argv[1], "BackgroundSessionClosed")) {
 248       // This command line flag is used for indirect shutdowns, the OS
 249       // relaunches Metro Firefox with this command line arg.
 250       mainFlags = XRE_MAIN_FLAG_USE_METRO;
 251     } else {
 252 #ifndef RELEASE_BUILD
 253       // This command-line flag is used to test the metro browser in a desktop
 254       // environment.
 255       for (int idx = 1; idx < argc; idx++) {
 256         if (IsArg(argv[idx], "metrodesktop")) {
 257           metroOnDesktop = true;
 258           // Disable crash reporting when running in metrodesktop mode.
 259           char crashSwitch[] = "MOZ_CRASHREPORTER_DISABLE=1";
 260           putenv(crashSwitch);
 261           break;
 262         }
 263       }
 264 #endif
 265     }
 266   }
 267 #endif
 268
 269   // Desktop browser launch
 270   if (mainFlags != XRE_MAIN_FLAG_USE_METRO && !metroOnDesktop) {
 271     ScopedAppData appData(&sAppData);
 272     nsCOMPtr<nsIFile> exeFile;
 273     rv = mozilla::BinaryPath::GetFile(argv[0], getter_AddRefs(exeFile));
 274     if (NS_FAILED(rv)) {
 275       Output("Couldn't find the application directory.\n");
 276       return 255;
 277     }
 278
 279     nsCOMPtr<nsIFile> greDir;
 280     exeFile->GetParent(getter_AddRefs(greDir));
 281 #ifdef XP_MACOSX
 282     greDir->SetNativeLeafName(NS_LITERAL_CSTRING(kOSXResourcesFolder));
 283 #endif
 284     nsCOMPtr<nsIFile> appSubdir;
 285     greDir->Clone(getter_AddRefs(appSubdir));
 286     appSubdir->Append(NS_LITERAL_STRING(kDesktopFolder));
 287
 288     SetStrongPtr(appData.directory, static_cast<nsIFile*>(appSubdir.get()));
 289     // xreDirectory already has a refcount from NS_NewLocalFile
 290     appData.xreDirectory = xreDirectory;
 291
 292     return XRE_main(argc, argv, &appData, mainFlags);
 293   }
 294
 295   // Metro browser launch
 296 #ifdef MOZ_METRO
 297   nsCOMPtr<nsIFile> iniFile, appSubdir;
 298
 299   xreDirectory->Clone(getter_AddRefs(iniFile));
 300   xreDirectory->Clone(getter_AddRefs(appSubdir));
 301
 302   iniFile->Append(NS_LITERAL_STRING(kMetroFolder));
 303   iniFile->Append(NS_LITERAL_STRING(kMetroAppIniFilename));
 304
 305   appSubdir->Append(NS_LITERAL_STRING(kMetroFolder));
 306
 307   nsAutoCString path;
 308   if (NS_FAILED(iniFile->GetNativePath(path))) {
 309     Output("Couldn't get ini file path.\n");
 310     return 255;
 311   }
 312
 313   nsXREAppData *appData;
 314   rv = XRE_CreateAppData(iniFile, &appData);
 315   if (NS_FAILED(rv) || !appData) {
 316     Output("Couldn't read application.ini");
 317     return 255;
 318   }
 319
 320   SetStrongPtr(appData->directory, static_cast<nsIFile*>(appSubdir.get()));
 321   // xreDirectory already has a refcount from NS_NewLocalFile
 322   appData->xreDirectory = xreDirectory;
 323
 324 #ifdef XP_WIN
 325   if (!metroOnDesktop) {
 326     nsCOMPtr<nsIFile> testFile;
 327
 328     xreDirectory->Clone(getter_AddRefs(testFile));
 329     testFile->Append(NS_LITERAL_STRING(kMetroTestFile));
 330
 331     nsAutoCString path;
 332     if (NS_FAILED(testFile->GetNativePath(path))) {
 333       Output("Couldn't get test file path.\n");
 334       return 255;
 335     }
 336
 337     // Check for a metro test harness command line args file
 338     HANDLE hTestFile = CreateFileA(path.get(),
 339                                    GENERIC_READ,
 340                                    0, nullptr, OPEN_EXISTING,
 341                                    FILE_ATTRIBUTE_NORMAL,
 342                                    nullptr);
 343     if (hTestFile != INVALID_HANDLE_VALUE) {
 344       // Typical test harness command line args string is around 100 bytes.
 345       char buffer[1024];
 346       memset(buffer, 0, sizeof(buffer));
 347       DWORD bytesRead = 0;
 348       if (!ReadFile(hTestFile, (VOID*)buffer, sizeof(buffer)-1,
 349                     &bytesRead, nullptr) || !bytesRead) {
 350         CloseHandle(hTestFile);
 351         printf("failed to read test file '%s'", testFile);
 352         return -1;
 353       }
 354       CloseHandle(hTestFile);
 355
 356       // Build new args array
 357       char* newArgv[20];
 358       int newArgc = 1;
 359
 360       memset(newArgv, 0, sizeof(newArgv));
 361
 362       char* ptr = buffer;
 363       newArgv[0] = ptr;
 364       while (*ptr != '\0' &&
 365              (ptr - buffer) < sizeof(buffer) &&
 366              newArgc < ARRAYSIZE(newArgv)) {
 367         if (isspace(*ptr)) {
 368           *ptr = '\0';
 369           ptr++;
 370           newArgv[newArgc] = ptr;
 371           newArgc++;
 372           continue;
 373         }
 374         ptr++;
 375       }
 376       if (ptr == newArgv[newArgc-1])
 377         newArgc--;
 378
 379       // attach browser stdout to metrotestharness stdout
 380       AttachToTestHarness();
 381
 382       int result = XRE_main(newArgc, newArgv, appData, mainFlags);
 383       XRE_FreeAppData(appData);
 384       return result;
 385     }
 386   }
 387 #endif
 388
 389   int result = XRE_main(argc, argv, appData, mainFlags);
 390   XRE_FreeAppData(appData);
 391   return result;
 392 #endif
 393
 394   NS_NOTREACHED("browser do_main failed to pickup proper initialization");
 395   return 255;
 396 }
 397
 398 #ifdef XP_WIN
 399
 400 /**
 401  * Used only when GetTickCount64 is not available on the platform.
 402  * Last result of GetTickCount call. Kept in [ms].
 403  */
 404 static DWORD sLastGTCResult = 0;
 405
 406 /**
 407  *  Higher part of the 64-bit value of MozGetTickCount64,
 408  * incremented atomically.
 409  */
 410 static DWORD sLastGTCRollover = 0;
 411
 412 /**
 413  * Function protecting GetTickCount result from rolling over. The original
 414  * code comes from the Windows implementation of the TimeStamp class minus the
 415  * locking harness which isn't needed here.
 416  *
 417  * @returns The current time in milliseconds
 418  */
 419 static ULONGLONG WINAPI
 420 MozGetTickCount64()
 421 {
 422   DWORD GTC = ::GetTickCount();
 423
 424   /* Pull the rollover counter forward only if new value of GTC goes way
 425    * down under the last saved result */
 426   if ((sLastGTCResult > GTC) && ((sLastGTCResult - GTC) > (1UL << 30)))
 427     ++sLastGTCRollover;
 428
 429   sLastGTCResult = GTC;
 430   return (ULONGLONG)sLastGTCRollover << 32 | sLastGTCResult;
 431 }
 432
 433 typedef ULONGLONG (WINAPI* GetTickCount64_t)();
 434 static GetTickCount64_t sGetTickCount64 = nullptr;
 435
 436 #endif
 437
 438 /**
 439  * Local TimeStamp::Now()-compatible implementation used to record timestamps
 440  * which will be passed to XRE_StartupTimelineRecord().
 441  */
 442 static uint64_t
 443 TimeStamp_Now()
 444 {
 445 #ifdef XP_WIN
 446   LARGE_INTEGER freq;
 447   ::QueryPerformanceFrequency(&freq);
 448
 449   HMODULE kernelDLL = GetModuleHandleW(L"kernel32.dll");
 450   sGetTickCount64 = reinterpret_cast<GetTickCount64_t>
 451     (GetProcAddress(kernelDLL, "GetTickCount64"));
 452
 453   if (!sGetTickCount64) {
 454     /* If the platform does not support the GetTickCount64 (Windows XP doesn't),
 455      * then use our fallback implementation based on GetTickCount. */
 456     sGetTickCount64 = MozGetTickCount64;
 457   }
 458
 459   return sGetTickCount64() * freq.QuadPart;
 460 #elif defined(XP_MACOSX)
 461   return mach_absolute_time();
 462 #elif defined(HAVE_CLOCK_MONOTONIC)
 463   struct timespec ts;
 464   int rv = clock_gettime(CLOCK_MONOTONIC, &ts);
 465
 466   if (rv != 0) {
 467     return 0;
 468   }
 469
 470   uint64_t baseNs = (uint64_t)ts.tv_sec * 1000000000;
 471   return baseNs + (uint64_t)ts.tv_nsec;
 472 #endif
 473 }
 474
 475 static bool
 476 FileExists(const char *path)
 477 {
 478 #ifdef XP_WIN
 479   wchar_t wideDir[MAX_PATH];
 480   MultiByteToWideChar(CP_UTF8, 0, path, -1, wideDir, MAX_PATH);
 481   DWORD fileAttrs = GetFileAttributesW(wideDir);
 482   return fileAttrs != INVALID_FILE_ATTRIBUTES;
 483 #else
 484   return access(path, R_OK) == 0;
 485 #endif
 486 }
 487
 488 #ifdef LIBXUL_SDK
 489 #  define XPCOM_PATH "xulrunner" XPCOM_FILE_PATH_SEPARATOR XPCOM_DLL
 490 #else
 491 #  define XPCOM_PATH XPCOM_DLL
 492 #endif
 493 static nsresult
 494 InitXPCOMGlue(const char *argv0, nsIFile **xreDirectory)
 495 {
 496   char exePath[MAXPATHLEN];
 497
 498   nsresult rv = mozilla::BinaryPath::Get(argv0, exePath);
 499   if (NS_FAILED(rv)) {
 500     Output("Couldn't find the application directory.\n");
 501     return rv;
 502   }
 503
 504   char *lastSlash = strrchr(exePath, XPCOM_FILE_PATH_SEPARATOR[0]);
 505   if (!lastSlash || (size_t(lastSlash - exePath) > MAXPATHLEN - sizeof(XPCOM_PATH) - 1))
 506     return NS_ERROR_FAILURE;
 507
 508   strcpy(lastSlash + 1, XPCOM_PATH);
 509   lastSlash += sizeof(XPCOM_PATH) - sizeof(XPCOM_DLL);
 510
 511   if (!FileExists(exePath)) {
 512 #if defined(LIBXUL_SDK) && defined(XP_MACOSX)
 513     // Check for <bundle>/Contents/Frameworks/XUL.framework/libxpcom.dylib
 514     bool greFound = false;
 515     CFBundleRef appBundle = CFBundleGetMainBundle();
 516     if (!appBundle)
 517       return NS_ERROR_FAILURE;
 518     CFURLRef fwurl = CFBundleCopyPrivateFrameworksURL(appBundle);
 519     CFURLRef absfwurl = nullptr;
 520     if (fwurl) {
 521       absfwurl = CFURLCopyAbsoluteURL(fwurl);
 522       CFRelease(fwurl);
 523     }
 524     if (absfwurl) {
 525       CFURLRef xulurl =
 526         CFURLCreateCopyAppendingPathComponent(nullptr, absfwurl,
 527                                               CFSTR("XUL.framework"),
 528                                               true);
 529
 530       if (xulurl) {
 531         CFURLRef xpcomurl =
 532           CFURLCreateCopyAppendingPathComponent(nullptr, xulurl,
 533                                                 CFSTR("libxpcom.dylib"),
 534                                                 false);
 535
 536         if (xpcomurl) {
 537           if (CFURLGetFileSystemRepresentation(xpcomurl, true,
 538                                                (UInt8*) exePath,
 539                                                sizeof(exePath)) &&
 540               access(tbuffer, R_OK | X_OK) == 0) {
 541             if (realpath(tbuffer, exePath)) {
 542               greFound = true;
 543             }
 544           }
 545           CFRelease(xpcomurl);
 546         }
 547         CFRelease(xulurl);
 548       }
 549       CFRelease(absfwurl);
 550     }
 551   }
 552   if (!greFound) {
 553 #endif
 554     Output("Could not find the Mozilla runtime.\n");
 555     return NS_ERROR_FAILURE;
 556   }
 557
 558   // We do this because of data in bug 771745
 559   XPCOMGlueEnablePreload();
 560
 561   rv = XPCOMGlueStartup(exePath);
 562   if (NS_FAILED(rv)) {
 563     Output("Couldn't load XPCOM.\n");
 564     return rv;
 565   }
 566
 567   rv = XPCOMGlueLoadXULFunctions(kXULFuncs);
 568   if (NS_FAILED(rv)) {
 569     Output("Couldn't load XRE functions.\n");
 570     return rv;
 571   }
 572
 573 #ifndef MOZ_METRO
 574   // This will set this thread as the main thread, which in metro land is
 575   // wrong. We initialize this later from the right thread in nsAppRunner.
 576   NS_LogInit();
 577 #endif
 578
 579   // chop XPCOM_DLL off exePath
 580   *lastSlash = '\0';
 581 #ifdef XP_MACOSX
 582   lastSlash = strrchr(exePath, XPCOM_FILE_PATH_SEPARATOR[0]);
 583   strcpy(lastSlash + 1, kOSXResourcesFolder);
 584 #endif
 585 #ifdef XP_WIN
 586   rv = NS_NewLocalFile(NS_ConvertUTF8toUTF16(exePath), false,
 587                        xreDirectory);
 588 #else
 589   rv = NS_NewNativeLocalFile(nsDependentCString(exePath), false,
 590                              xreDirectory);
 591 #endif
 592
 593   return rv;
 594 }
 595
 596 int main(int argc, char* argv[])
 597 {
 598 #ifdef DEBUG_delay_start_metro
 599   Sleep(5000);
 600 #endif
 601   uint64_t start = TimeStamp_Now();
 602
 603 #ifdef XP_MACOSX
 604   TriggerQuirks();
 605 #endif
 606
 607   int gotCounters;
 608 #if defined(XP_UNIX)
 609   struct rusage initialRUsage;
 610   gotCounters = !getrusage(RUSAGE_SELF, &initialRUsage);
 611 #elif defined(XP_WIN)
 612   IO_COUNTERS ioCounters;
 613   gotCounters = GetProcessIoCounters(GetCurrentProcess(), &ioCounters);
 614 #endif
 615
 616   nsIFile *xreDirectory;
 617
 618 #ifdef HAS_DLL_BLOCKLIST
 619   DllBlocklist_Initialize();
 620
 621 #ifdef DEBUG
 622   // In order to be effective against AppInit DLLs, the blocklist must be
 623   // initialized before user32.dll is loaded into the process (bug 932100).
 624   if (GetModuleHandleA("user32.dll")) {
 625     fprintf(stderr, "DLL blocklist was unable to intercept AppInit DLLs.\n");
 626   }
 627 #endif
 628 #endif
 629
 630   nsresult rv = InitXPCOMGlue(argv[0], &xreDirectory);
 631   if (NS_FAILED(rv)) {
 632     return 255;
 633   }
 634
 635   XRE_StartupTimelineRecord(mozilla::StartupTimeline::START, start);
 636
 637   if (gotCounters) {
 638 #if defined(XP_WIN)
 639     XRE_TelemetryAccumulate(mozilla::Telemetry::EARLY_GLUESTARTUP_READ_OPS,
 640                             int(ioCounters.ReadOperationCount));
 641     XRE_TelemetryAccumulate(mozilla::Telemetry::EARLY_GLUESTARTUP_READ_TRANSFER,
 642                             int(ioCounters.ReadTransferCount / 1024));
 643     IO_COUNTERS newIoCounters;
 644     if (GetProcessIoCounters(GetCurrentProcess(), &newIoCounters)) {
 645       XRE_TelemetryAccumulate(mozilla::Telemetry::GLUESTARTUP_READ_OPS,
 646                               int(newIoCounters.ReadOperationCount - ioCounters.ReadOperationCount));
 647       XRE_TelemetryAccumulate(mozilla::Telemetry::GLUESTARTUP_READ_TRANSFER,
 648                               int((newIoCounters.ReadTransferCount - ioCounters.ReadTransferCount) / 1024));
 649     }
 650 #elif defined(XP_UNIX)
 651     XRE_TelemetryAccumulate(mozilla::Telemetry::EARLY_GLUESTARTUP_HARD_FAULTS,
 652                             int(initialRUsage.ru_majflt));
 653     struct rusage newRUsage;
 654     if (!getrusage(RUSAGE_SELF, &newRUsage)) {
 655       XRE_TelemetryAccumulate(mozilla::Telemetry::GLUESTARTUP_HARD_FAULTS,
 656                               int(newRUsage.ru_majflt - initialRUsage.ru_majflt));
 657     }
 658 #endif
 659   }
 660
 661   int result = do_main(argc, argv, xreDirectory);
 662
 663   NS_LogTerm();
 664
 665 #ifdef XP_MACOSX
 666   // Allow writes again. While we would like to catch writes from static
 667   // destructors to allow early exits to use _exit, we know that there is
 668   // at least one such write that we don't control (see bug 826029). For
 669   // now we enable writes again and early exits will have to use exit instead
 670   // of _exit.
 671   XRE_StopLateWriteChecks();
 672 #endif
 673
 674   return result;
 675 }