예제 #1
0
static bool
LoadLibxul(const char *aXPCOMPath)
{
  nsresult rv;

  XPCOMGlueEnablePreload();
  rv = XPCOMGlueStartup(aXPCOMPath);
  NS_ENSURE_SUCCESS(rv, false);

  rv = XPCOMGlueLoadXULFunctions(kXULFuncs);
  NS_ENSURE_SUCCESS(rv, false);

  return true;
}
예제 #2
0
int main(int argc, char* argv[])
{
  char exePath[MAXPATHLEN];

  nsresult rv = mozilla::BinaryPath::Get(argv[0], exePath);
  if (NS_FAILED(rv)) {
    Output("Couldn't calculate the application directory.\n");
    return 255;
  }

  char *lastSlash = strrchr(exePath, XPCOM_FILE_PATH_SEPARATOR[0]);
  if (!lastSlash || (lastSlash - exePath > MAXPATHLEN - sizeof(XPCOM_DLL) - 1))
    return 255;

  strcpy(++lastSlash, XPCOM_DLL);

  int gotCounters;
#if defined(XP_UNIX)
  struct rusage initialRUsage;
  gotCounters = !getrusage(RUSAGE_SELF, &initialRUsage);
#elif defined(XP_WIN)
  // GetProcessIoCounters().ReadOperationCount seems to have little to
  // do with actual read operations. It reports 0 or 1 at this stage
  // in the program. Luckily 1 coincides with when prefetch is
  // enabled. If Windows prefetch didn't happen we can do our own
  // faster dll preloading.
  IO_COUNTERS ioCounters;
  gotCounters = GetProcessIoCounters(GetCurrentProcess(), &ioCounters);
  if (gotCounters && !ioCounters.ReadOperationCount)
#endif
  {
      XPCOMGlueEnablePreload();
  }


  rv = XPCOMGlueStartup(exePath);
  if (NS_FAILED(rv)) {
    Output("Couldn't load XPCOM.\n");
    return 255;
  }
  // Reset exePath so that it is the directory name and not the xpcom dll name
  *lastSlash = 0;

  rv = XPCOMGlueLoadXULFunctions(kXULFuncs);
  if (NS_FAILED(rv)) {
    Output("Couldn't load XRE functions.\n");
    return 255;
  }

#ifdef XRE_HAS_DLL_BLOCKLIST
  XRE_SetupDllBlocklist();
#endif

  if (gotCounters) {
#if defined(XP_WIN)
    XRE_TelemetryAccumulate(mozilla::Telemetry::EARLY_GLUESTARTUP_READ_OPS,
                            int(ioCounters.ReadOperationCount));
    XRE_TelemetryAccumulate(mozilla::Telemetry::EARLY_GLUESTARTUP_READ_TRANSFER,
                            int(ioCounters.ReadTransferCount / 1024));
    IO_COUNTERS newIoCounters;
    if (GetProcessIoCounters(GetCurrentProcess(), &newIoCounters)) {
      XRE_TelemetryAccumulate(mozilla::Telemetry::GLUESTARTUP_READ_OPS,
                              int(newIoCounters.ReadOperationCount - ioCounters.ReadOperationCount));
      XRE_TelemetryAccumulate(mozilla::Telemetry::GLUESTARTUP_READ_TRANSFER,
                              int((newIoCounters.ReadTransferCount - ioCounters.ReadTransferCount) / 1024));
    }
#elif defined(XP_UNIX)
    XRE_TelemetryAccumulate(mozilla::Telemetry::EARLY_GLUESTARTUP_HARD_FAULTS,
                            int(initialRUsage.ru_majflt));
    struct rusage newRUsage;
    if (!getrusage(RUSAGE_SELF, &newRUsage)) {
      XRE_TelemetryAccumulate(mozilla::Telemetry::GLUESTARTUP_HARD_FAULTS,
                              int(newRUsage.ru_majflt - initialRUsage.ru_majflt));
    }
#endif
  }

  int result;
  {
    ScopedLogging log;
    result = do_main(argc, argv);
  }

  XPCOMGlueShutdown();
  return result;
}
예제 #3
0
int main(int argc, char* argv[])
{
  PRTime start = _PR_Now();
  char exePath[MAXPATHLEN];

#ifdef XP_MACOSX
  TriggerQuirks();
#endif

  nsresult rv = mozilla::BinaryPath::Get(argv[0], exePath);
  if (NS_FAILED(rv)) {
    Output("Couldn't calculate the application directory.\n");
    return 255;
  }

  char *lastSlash = strrchr(exePath, XPCOM_FILE_PATH_SEPARATOR[0]);
  if (!lastSlash || (size_t(lastSlash - exePath) > MAXPATHLEN - sizeof(XPCOM_DLL) - 1))
    return 255;

  strcpy(++lastSlash, XPCOM_DLL);

  int gotCounters;
#if defined(XP_UNIX)
  struct rusage initialRUsage;
  gotCounters = !getrusage(RUSAGE_SELF, &initialRUsage);
#elif defined(XP_WIN)
  IO_COUNTERS ioCounters;
  gotCounters = GetProcessIoCounters(GetCurrentProcess(), &ioCounters);
#endif

  // We do this because of data in bug 771745
  XPCOMGlueEnablePreload();

  rv = XPCOMGlueStartup(exePath);
  if (NS_FAILED(rv)) {
    Output("Couldn't load XPCOM.\n");
    return 255;
  }
  // Reset exePath so that it is the directory name and not the xpcom dll name
  *lastSlash = 0;

  rv = XPCOMGlueLoadXULFunctions(kXULFuncs);
  if (NS_FAILED(rv)) {
    Output("Couldn't load XRE functions.\n");
    return 255;
  }

  XRE_StartupTimelineRecord(mozilla::StartupTimeline::START, start);

#ifdef XRE_HAS_DLL_BLOCKLIST
  XRE_SetupDllBlocklist();
#endif

  if (gotCounters) {
#if defined(XP_WIN)
    XRE_TelemetryAccumulate(mozilla::Telemetry::EARLY_GLUESTARTUP_READ_OPS,
                            int(ioCounters.ReadOperationCount));
    XRE_TelemetryAccumulate(mozilla::Telemetry::EARLY_GLUESTARTUP_READ_TRANSFER,
                            int(ioCounters.ReadTransferCount / 1024));
    IO_COUNTERS newIoCounters;
    if (GetProcessIoCounters(GetCurrentProcess(), &newIoCounters)) {
      XRE_TelemetryAccumulate(mozilla::Telemetry::GLUESTARTUP_READ_OPS,
                              int(newIoCounters.ReadOperationCount - ioCounters.ReadOperationCount));
      XRE_TelemetryAccumulate(mozilla::Telemetry::GLUESTARTUP_READ_TRANSFER,
                              int((newIoCounters.ReadTransferCount - ioCounters.ReadTransferCount) / 1024));
    }
#elif defined(XP_UNIX)
    XRE_TelemetryAccumulate(mozilla::Telemetry::EARLY_GLUESTARTUP_HARD_FAULTS,
                            int(initialRUsage.ru_majflt));
    struct rusage newRUsage;
    if (!getrusage(RUSAGE_SELF, &newRUsage)) {
      XRE_TelemetryAccumulate(mozilla::Telemetry::GLUESTARTUP_HARD_FAULTS,
                              int(newRUsage.ru_majflt - initialRUsage.ru_majflt));
    }
#endif
  }

  int result;
  {
    ScopedLogging log;
    result = do_main(argc, argv);
  }

  XPCOMGlueShutdown();
  return result;
}
예제 #4
0
int main(int argc, char* argv[])
{
  char exePath[MAXPATHLEN];

#ifdef MOZ_WIDGET_GONK
  // The first call of ProcessState::self() (per process) will register into
  // binder driver by current thread info, so the main thread is a best one to
  // do registration because it never leaves.
  android::sp<android::ProcessState> proc(android::ProcessState::self());
#endif

  nsresult rv = mozilla::BinaryPath::Get(argv[0], exePath);
  if (NS_FAILED(rv)) {
    Output("Couldn't calculate the application directory.\n");
    return 255;
  }

  char *lastSlash = strrchr(exePath, XPCOM_FILE_PATH_SEPARATOR[0]);
  if (!lastSlash || ((lastSlash - exePath) + sizeof(XPCOM_DLL) + 1 > MAXPATHLEN))
    return 255;

  strcpy(++lastSlash, XPCOM_DLL);

#if defined(XP_UNIX)
  // If the b2g app is launched from adb shell, then the shell will wind
  // up being the process group controller. This means that we can't send
  // signals to the process group (useful for profiling).
  // We ignore the return value since setsid() fails if we're already the
  // process group controller (the normal situation).
  (void)setsid();
#endif

  int gotCounters;
#if defined(XP_UNIX)
  struct rusage initialRUsage;
  gotCounters = !getrusage(RUSAGE_SELF, &initialRUsage);
#elif defined(XP_WIN)
  IO_COUNTERS ioCounters;
  gotCounters = GetProcessIoCounters(GetCurrentProcess(), &ioCounters);
#endif

  // We do this because of data in bug 771745
  XPCOMGlueEnablePreload();

  rv = XPCOMGlueStartup(exePath);
  if (NS_FAILED(rv)) {
    Output("Couldn't load XPCOM.\n");
    return 255;
  }
  // Reset exePath so that it is the directory name and not the xpcom dll name
  *lastSlash = 0;

  rv = XPCOMGlueLoadXULFunctions(kXULFuncs);
  if (NS_FAILED(rv)) {
    Output("Couldn't load XRE functions.\n");
    return 255;
  }

#ifdef XRE_HAS_DLL_BLOCKLIST
  XRE_SetupDllBlocklist();
#endif

  if (gotCounters) {
#if defined(XP_WIN)
    XRE_TelemetryAccumulate(mozilla::Telemetry::EARLY_GLUESTARTUP_READ_OPS,
                            int(ioCounters.ReadOperationCount));
    XRE_TelemetryAccumulate(mozilla::Telemetry::EARLY_GLUESTARTUP_READ_TRANSFER,
                            int(ioCounters.ReadTransferCount / 1024));
    IO_COUNTERS newIoCounters;
    if (GetProcessIoCounters(GetCurrentProcess(), &newIoCounters)) {
      XRE_TelemetryAccumulate(mozilla::Telemetry::GLUESTARTUP_READ_OPS,
                              int(newIoCounters.ReadOperationCount - ioCounters.ReadOperationCount));
      XRE_TelemetryAccumulate(mozilla::Telemetry::GLUESTARTUP_READ_TRANSFER,
                              int((newIoCounters.ReadTransferCount - ioCounters.ReadTransferCount) / 1024));
    }
#elif defined(XP_UNIX)
    XRE_TelemetryAccumulate(mozilla::Telemetry::EARLY_GLUESTARTUP_HARD_FAULTS,
                            int(initialRUsage.ru_majflt));
    struct rusage newRUsage;
    if (!getrusage(RUSAGE_SELF, &newRUsage)) {
      XRE_TelemetryAccumulate(mozilla::Telemetry::GLUESTARTUP_HARD_FAULTS,
                              int(newRUsage.ru_majflt - initialRUsage.ru_majflt));
    }
#endif
  }

  int result;
  {
    ScopedLogging log;
    result = do_main(argc, argv);
  }

  XPCOMGlueShutdown();
  return result;
}
예제 #5
0
int main(int argc, _CONST char* argv[])
{
#ifndef MOZ_B2G_LOADER
  char exePath[MAXPATHLEN];
#endif

#ifdef MOZ_WIDGET_GONK
  // This creates a ThreadPool for binder ipc. A ThreadPool is necessary to
  // receive binder calls, though not necessary to send binder calls.
  // ProcessState::Self() also needs to be called once on the main thread to
  // register the main thread with the binder driver.
  android::ProcessState::self()->startThreadPool();
#endif

  nsresult rv;
#ifndef MOZ_B2G_LOADER
  rv = mozilla::BinaryPath::Get(argv[0], exePath);
  if (NS_FAILED(rv)) {
    Output("Couldn't calculate the application directory.\n");
    return 255;
  }

  char *lastSlash = strrchr(exePath, XPCOM_FILE_PATH_SEPARATOR[0]);
  if (!lastSlash || ((lastSlash - exePath) + sizeof(XPCOM_DLL) + 1 > MAXPATHLEN))
    return 255;

  strcpy(++lastSlash, XPCOM_DLL);
#endif // MOZ_B2G_LOADER

#if defined(XP_UNIX)
  // If the b2g app is launched from adb shell, then the shell will wind
  // up being the process group controller. This means that we can't send
  // signals to the process group (useful for profiling).
  // We ignore the return value since setsid() fails if we're already the
  // process group controller (the normal situation).
  (void)setsid();
#endif

  int gotCounters;
#if defined(XP_UNIX)
  struct rusage initialRUsage;
  gotCounters = !getrusage(RUSAGE_SELF, &initialRUsage);
#elif defined(XP_WIN)
  IO_COUNTERS ioCounters;
  gotCounters = GetProcessIoCounters(GetCurrentProcess(), &ioCounters);
#else
  #error "Unknown platform"  // having this here keeps cppcheck happy
#endif

#ifdef HAS_DLL_BLOCKLIST
  DllBlocklist_Initialize();
#endif

  // B2G loader has already initialized Gecko so we can't initialize
  // it again here.
#ifndef MOZ_B2G_LOADER
  // We do this because of data in bug 771745
  XPCOMGlueEnablePreload();

  rv = XPCOMGlueStartup(exePath);
  if (NS_FAILED(rv)) {
    Output("Couldn't load XPCOM.\n");
    return 255;
  }
  // Reset exePath so that it is the directory name and not the xpcom dll name
  *lastSlash = 0;
#endif // MOZ_B2G_LOADER

  rv = XPCOMGlueLoadXULFunctions(kXULFuncs);
  if (NS_FAILED(rv)) {
    Output("Couldn't load XRE functions.\n");
    return 255;
  }

  if (gotCounters) {
#if defined(XP_WIN)
    XRE_TelemetryAccumulate(mozilla::Telemetry::EARLY_GLUESTARTUP_READ_OPS,
                            int(ioCounters.ReadOperationCount));
    XRE_TelemetryAccumulate(mozilla::Telemetry::EARLY_GLUESTARTUP_READ_TRANSFER,
                            int(ioCounters.ReadTransferCount / 1024));
    IO_COUNTERS newIoCounters;
    if (GetProcessIoCounters(GetCurrentProcess(), &newIoCounters)) {
      XRE_TelemetryAccumulate(mozilla::Telemetry::GLUESTARTUP_READ_OPS,
                              int(newIoCounters.ReadOperationCount - ioCounters.ReadOperationCount));
      XRE_TelemetryAccumulate(mozilla::Telemetry::GLUESTARTUP_READ_TRANSFER,
                              int((newIoCounters.ReadTransferCount - ioCounters.ReadTransferCount) / 1024));
    }
#elif defined(XP_UNIX)
    XRE_TelemetryAccumulate(mozilla::Telemetry::EARLY_GLUESTARTUP_HARD_FAULTS,
                            int(initialRUsage.ru_majflt));
    struct rusage newRUsage;
    if (!getrusage(RUSAGE_SELF, &newRUsage)) {
      XRE_TelemetryAccumulate(mozilla::Telemetry::GLUESTARTUP_HARD_FAULTS,
                              int(newRUsage.ru_majflt - initialRUsage.ru_majflt));
    }
#else
  #error "Unknown platform"  // having this here keeps cppcheck happy
#endif
  }

  int result;
  {
    ScopedLogging log;
    char **_argv;

    /*
     * Duplicate argument vector to conform non-const argv of
     * do_main() since XRE_main() is very stupid with non-const argv.
     */
    _argv = new char *[argc + 1];
    for (int i = 0; i < argc; i++) {
      size_t len = strlen(argv[i]) + 1;
      _argv[i] = new char[len];
      MOZ_ASSERT(_argv[i] != nullptr);
      memcpy(_argv[i], argv[i], len);
    }
    _argv[argc] = nullptr;

    result = do_main(argc, _argv);

    for (int i = 0; i < argc; i++) {
      delete[] _argv[i];
    }
    delete[] _argv;
  }

  return result;
}
예제 #6
0
int main(int argc, char* argv[])
{
  char exePath[MAXPATHLEN];

#ifdef MOZ_WIDGET_GONK
  // This creates a ThreadPool for binder ipc. A ThreadPool is necessary to
  // receive binder calls, though not necessary to send binder calls.
  // ProcessState::Self() also needs to be called once on the main thread to
  // register the main thread with the binder driver.
  android::ProcessState::self()->startThreadPool();
#endif

  nsresult rv = mozilla::BinaryPath::Get(argv[0], exePath);
  if (NS_FAILED(rv)) {
    Output("Couldn't calculate the application directory.\n");
    return 255;
  }

  char *lastSlash = strrchr(exePath, XPCOM_FILE_PATH_SEPARATOR[0]);
  if (!lastSlash || ((lastSlash - exePath) + sizeof(XPCOM_DLL) + 1 > MAXPATHLEN))
    return 255;

  strcpy(++lastSlash, XPCOM_DLL);

#if defined(XP_UNIX)
  // If the b2g app is launched from adb shell, then the shell will wind
  // up being the process group controller. This means that we can't send
  // signals to the process group (useful for profiling).
  // We ignore the return value since setsid() fails if we're already the
  // process group controller (the normal situation).
  (void)setsid();
#endif

  int gotCounters;
#if defined(XP_UNIX)
  struct rusage initialRUsage;
  gotCounters = !getrusage(RUSAGE_SELF, &initialRUsage);
#elif defined(XP_WIN)
  IO_COUNTERS ioCounters;
  gotCounters = GetProcessIoCounters(GetCurrentProcess(), &ioCounters);
#endif

  // We do this because of data in bug 771745
  XPCOMGlueEnablePreload();

  rv = XPCOMGlueStartup(exePath);
  if (NS_FAILED(rv)) {
    Output("Couldn't load XPCOM.\n");
    return 255;
  }
  // Reset exePath so that it is the directory name and not the xpcom dll name
  *lastSlash = 0;

  rv = XPCOMGlueLoadXULFunctions(kXULFuncs);
  if (NS_FAILED(rv)) {
    Output("Couldn't load XRE functions.\n");
    return 255;
  }

#ifdef XRE_HAS_DLL_BLOCKLIST
  XRE_SetupDllBlocklist();
#endif

  int result;
  {
    ScopedLogging log;
    result = do_main(argc, argv);
  }

  return result;
}
예제 #7
0
int main(int argc, char* argv[])
{
  PRTime start = _PR_Now();
  char exePath[MAXPATHLEN];

#ifdef XP_MACOSX
  TriggerQuirks();
#endif

  nsresult rv = mozilla::BinaryPath::Get(argv[0], exePath);
  if (NS_FAILED(rv)) {
    Output("Couldn't calculate the application directory.\n");
    return 255;
  }

  char *lastSlash = strrchr(exePath, XPCOM_FILE_PATH_SEPARATOR[0]);
  if (!lastSlash || (size_t(lastSlash - exePath) > MAXPATHLEN - sizeof(XPCOM_DLL) - 1))
    return 255;

  strcpy(++lastSlash, XPCOM_DLL);

  int gotCounters;
#if defined(XP_UNIX)
  struct rusage initialRUsage;
  gotCounters = !getrusage(RUSAGE_SELF, &initialRUsage);
#elif defined(XP_WIN)
  // Don't change the order of these enumeration constants, the order matters
  // for reporting telemetry data.  If new values are added adjust the
  // STARTUP_USING_PRELOAD_TRIAL histogram.
  enum PreloadType{ PREFETCH_PRELOAD,
                    PREFETCH_NO_PRELOAD,
                    NO_PREFETCH_PRELOAD,
                    NO_PREFETCH_NO_PRELOAD };
  PreloadType preloadType;

  IO_COUNTERS ioCounters;
  gotCounters = GetProcessIoCounters(GetCurrentProcess(), &ioCounters);

  srand(time(NULL));
  bool shouldUsePreload = rand() % 2 == 0;

  if (IsPrefetchDisabledViaService()) {
    if (shouldUsePreload) {
      preloadType = NO_PREFETCH_PRELOAD;
    }  else {
      preloadType = NO_PREFETCH_NO_PRELOAD;
    }
  } else {
    if (shouldUsePreload) {
      preloadType = PREFETCH_PRELOAD;
    }  else {
      preloadType = PREFETCH_NO_PRELOAD;
    }
  }

  if (shouldUsePreload)
#endif
  {
      XPCOMGlueEnablePreload();
  }

  rv = XPCOMGlueStartup(exePath);
  if (NS_FAILED(rv)) {
    Output("Couldn't load XPCOM.\n");
    return 255;
  }
  // Reset exePath so that it is the directory name and not the xpcom dll name
  *lastSlash = 0;

  rv = XPCOMGlueLoadXULFunctions(kXULFuncs);
  if (NS_FAILED(rv)) {
    Output("Couldn't load XRE functions.\n");
    return 255;
  }

  XRE_StartupTimelineRecord(mozilla::StartupTimeline::START, start);

#ifdef XRE_HAS_DLL_BLOCKLIST
  XRE_SetupDllBlocklist();
#endif

#if defined(XP_WIN)
  XRE_TelemetryAccumulate(mozilla::Telemetry::STARTUP_USING_PRELOAD_TRIAL,
                          preloadType);
#endif

  if (gotCounters) {
#if defined(XP_WIN)
    XRE_TelemetryAccumulate(mozilla::Telemetry::EARLY_GLUESTARTUP_READ_OPS,
                            int(ioCounters.ReadOperationCount));
    XRE_TelemetryAccumulate(mozilla::Telemetry::EARLY_GLUESTARTUP_READ_TRANSFER,
                            int(ioCounters.ReadTransferCount / 1024));
    IO_COUNTERS newIoCounters;
    if (GetProcessIoCounters(GetCurrentProcess(), &newIoCounters)) {
      XRE_TelemetryAccumulate(mozilla::Telemetry::GLUESTARTUP_READ_OPS,
                              int(newIoCounters.ReadOperationCount - ioCounters.ReadOperationCount));
      XRE_TelemetryAccumulate(mozilla::Telemetry::GLUESTARTUP_READ_TRANSFER,
                              int((newIoCounters.ReadTransferCount - ioCounters.ReadTransferCount) / 1024));
    }
#elif defined(XP_UNIX)
    XRE_TelemetryAccumulate(mozilla::Telemetry::EARLY_GLUESTARTUP_HARD_FAULTS,
                            int(initialRUsage.ru_majflt));
    struct rusage newRUsage;
    if (!getrusage(RUSAGE_SELF, &newRUsage)) {
      XRE_TelemetryAccumulate(mozilla::Telemetry::GLUESTARTUP_HARD_FAULTS,
                              int(newRUsage.ru_majflt - initialRUsage.ru_majflt));
    }
#endif
  }

  int result;
  {
    ScopedLogging log;
    result = do_main(argc, argv);
  }

  XPCOMGlueShutdown();
  return result;
}
int main(int argc, char* argv[])
{
  char exePath[MAXPATHLEN];

#ifdef MOZ_WIDGET_GONK
  // This creates a ThreadPool for binder ipc. A ThreadPool is necessary to
  // receive binder calls, though not necessary to send binder calls.
  // ProcessState::Self() also needs to be called once on the main thread to
  // register the main thread with the binder driver.
  android::ProcessState::self()->startThreadPool();
#endif

  nsresult rv;
  rv = mozilla::BinaryPath::Get(argv[0], exePath);
  if (NS_FAILED(rv)) {
    Output("Couldn't calculate the application directory.\n");
    return 255;
  }

  char *lastSlash = strrchr(exePath, XPCOM_FILE_PATH_SEPARATOR[0]);
  if (!lastSlash || ((lastSlash - exePath) + sizeof(XPCOM_DLL) + 1 > MAXPATHLEN))
    return 255;

  strcpy(++lastSlash, XPCOM_DLL);

#if defined(XP_UNIX)
  // If the b2g app is launched from adb shell, then the shell will wind
  // up being the process group controller. This means that we can't send
  // signals to the process group (useful for profiling).
  // We ignore the return value since setsid() fails if we're already the
  // process group controller (the normal situation).
  (void)setsid();
#endif

#ifdef HAS_DLL_BLOCKLIST
  DllBlocklist_Initialize();
#endif

  // We do this because of data in bug 771745
  XPCOMGlueEnablePreload();

  rv = XPCOMGlueStartup(exePath);
  if (NS_FAILED(rv)) {
    Output("Couldn't load XPCOM.\n");
    return 255;
  }
  // Reset exePath so that it is the directory name and not the xpcom dll name
  *lastSlash = 0;

  rv = XPCOMGlueLoadXULFunctions(kXULFuncs);
  if (NS_FAILED(rv)) {
    Output("Couldn't load XRE functions.\n");
    return 255;
  }

  int result;
  {
    ScopedLogging log;
    char **_argv;

    /*
     * Duplicate argument vector to conform non-const argv of
     * do_main() since XRE_main() is very stupid with non-const argv.
     */
    _argv = new char *[argc + 1];
    for (int i = 0; i < argc; i++) {
      size_t len = strlen(argv[i]) + 1;
      _argv[i] = new char[len];
      MOZ_ASSERT(_argv[i] != nullptr);
      memcpy(_argv[i], argv[i], len);
    }
    _argv[argc] = nullptr;

    result = do_main(argc, _argv);

    for (int i = 0; i < argc; i++) {
      delete[] _argv[i];
    }
    delete[] _argv;
  }

  return result;
}