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Diffstat (limited to 'components/startup/nsAppStartup.cpp')
| -rw-r--r-- | components/startup/nsAppStartup.cpp | 978 |
1 files changed, 978 insertions, 0 deletions
diff --git a/components/startup/nsAppStartup.cpp b/components/startup/nsAppStartup.cpp new file mode 100644 index 000000000..11a000270 --- /dev/null +++ b/components/startup/nsAppStartup.cpp @@ -0,0 +1,978 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +#include "nsAppStartup.h" + +#include "nsIAppShellService.h" +#include "nsPIDOMWindow.h" +#include "nsIInterfaceRequestor.h" +#include "nsIFile.h" +#include "nsIObserverService.h" +#include "nsIPrefBranch.h" +#include "nsIPrefService.h" +#include "nsIProcess.h" +#include "nsIPromptService.h" +#include "nsIStringBundle.h" +#include "nsISupportsPrimitives.h" +#include "nsIToolkitProfile.h" +#include "nsIWebBrowserChrome.h" +#include "nsIWindowMediator.h" +#include "nsIWindowWatcher.h" +#include "nsIXULRuntime.h" +#include "nsIXULWindow.h" +#include "nsNativeCharsetUtils.h" +#include "nsThreadUtils.h" +#include "nsAutoPtr.h" +#include "nsString.h" +#include "mozilla/Preferences.h" +#include "GeckoProfiler.h" + +#include "prprf.h" +#include "nsIInterfaceRequestorUtils.h" +#include "nsWidgetsCID.h" +#include "nsAppRunner.h" +#include "nsAppShellCID.h" +#include "nsXPCOMCIDInternal.h" +#include "mozilla/Services.h" +#include "nsIXPConnect.h" +#include "jsapi.h" +#include "js/Date.h" +#include "prenv.h" +#include "nsAppDirectoryServiceDefs.h" + +#if defined(XP_WIN) +// Prevent collisions with nsAppStartup::GetStartupInfo() +#undef GetStartupInfo +#endif + +#include "mozilla/IOInterposer.h" +#include "mozilla/StartupTimeline.h" + +static NS_DEFINE_CID(kAppShellCID, NS_APPSHELL_CID); + +#define kPrefLastSuccess "toolkit.startup.last_success" +#define kPrefMaxResumedCrashes "toolkit.startup.max_resumed_crashes" +#define kPrefRecentCrashes "toolkit.startup.recent_crashes" +#define kPrefAlwaysUseSafeMode "toolkit.startup.always_use_safe_mode" + +#if defined(XP_WIN) +#include "mozilla/perfprobe.h" +/** + * Events sent to the system for profiling purposes + */ +//Keep them syncronized with the .mof file + +//Process-wide GUID, used by the OS to differentiate sources +// {509962E0-406B-46F4-99BA-5A009F8D2225} +//Keep it synchronized with the .mof file +#define NS_APPLICATION_TRACING_CID \ + { 0x509962E0, 0x406B, 0x46F4, \ + { 0x99, 0xBA, 0x5A, 0x00, 0x9F, 0x8D, 0x22, 0x25} } + +//Event-specific GUIDs, used by the OS to differentiate events +// {A3DA04E0-57D7-482A-A1C1-61DA5F95BACB} +#define NS_PLACES_INIT_COMPLETE_EVENT_CID \ + { 0xA3DA04E0, 0x57D7, 0x482A, \ + { 0xA1, 0xC1, 0x61, 0xDA, 0x5F, 0x95, 0xBA, 0xCB} } +// {917B96B1-ECAD-4DAB-A760-8D49027748AE} +#define NS_SESSION_STORE_WINDOW_RESTORED_EVENT_CID \ + { 0x917B96B1, 0xECAD, 0x4DAB, \ + { 0xA7, 0x60, 0x8D, 0x49, 0x02, 0x77, 0x48, 0xAE} } +// {26D1E091-0AE7-4F49-A554-4214445C505C} +#define NS_XPCOM_SHUTDOWN_EVENT_CID \ + { 0x26D1E091, 0x0AE7, 0x4F49, \ + { 0xA5, 0x54, 0x42, 0x14, 0x44, 0x5C, 0x50, 0x5C} } + +static NS_DEFINE_CID(kApplicationTracingCID, + NS_APPLICATION_TRACING_CID); +static NS_DEFINE_CID(kPlacesInitCompleteCID, + NS_PLACES_INIT_COMPLETE_EVENT_CID); +static NS_DEFINE_CID(kSessionStoreWindowRestoredCID, + NS_SESSION_STORE_WINDOW_RESTORED_EVENT_CID); +static NS_DEFINE_CID(kXPCOMShutdownCID, + NS_XPCOM_SHUTDOWN_EVENT_CID); +#endif //defined(XP_WIN) + +using namespace mozilla; + +class nsAppExitEvent : public mozilla::Runnable { +private: + RefPtr<nsAppStartup> mService; + +public: + explicit nsAppExitEvent(nsAppStartup *service) : mService(service) {} + + NS_IMETHOD Run() override { + // Tell the appshell to exit + mService->mAppShell->Exit(); + + mService->mRunning = false; + return NS_OK; + } +}; + +/** + * Computes an approximation of the absolute time represented by @a stamp + * which is comparable to those obtained via PR_Now(). If the current absolute + * time varies a lot (e.g. DST adjustments) since the first call then the + * resulting times may be inconsistent. + * + * @param stamp The timestamp to be converted + * @returns The converted timestamp + */ +uint64_t ComputeAbsoluteTimestamp(PRTime prnow, TimeStamp now, TimeStamp stamp) +{ + static PRTime sAbsoluteNow = PR_Now(); + static TimeStamp sMonotonicNow = TimeStamp::Now(); + + return sAbsoluteNow - (sMonotonicNow - stamp).ToMicroseconds(); +} + +// +// nsAppStartup +// + +nsAppStartup::nsAppStartup() : + mConsiderQuitStopper(0), + mRunning(false), + mShuttingDown(false), + mStartingUp(true), + mAttemptingQuit(false), + mRestart(false), + mInterrupted(false), + mIsSafeModeNecessary(false), + mStartupCrashTrackingEnded(false), + mRestartNotSameProfile(false) +{ } + + +nsresult +nsAppStartup::Init() +{ + nsresult rv; + + // Create widget application shell + mAppShell = do_GetService(kAppShellCID, &rv); + NS_ENSURE_SUCCESS(rv, rv); + + nsCOMPtr<nsIObserverService> os = + mozilla::services::GetObserverService(); + if (!os) + return NS_ERROR_FAILURE; + + os->AddObserver(this, "quit-application", true); + os->AddObserver(this, "quit-application-forced", true); + os->AddObserver(this, "sessionstore-init-started", true); + os->AddObserver(this, "sessionstore-windows-restored", true); + os->AddObserver(this, "profile-change-teardown", true); + os->AddObserver(this, "xul-window-registered", true); + os->AddObserver(this, "xul-window-destroyed", true); + os->AddObserver(this, "profile-before-change", true); + os->AddObserver(this, "xpcom-shutdown", true); + +#if defined(XP_WIN) + os->AddObserver(this, "places-init-complete", true); + // This last event is only interesting to us for xperf-based measures + + // Initialize interaction with profiler + mProbesManager = + new ProbeManager( + kApplicationTracingCID, + NS_LITERAL_CSTRING("Application startup probe")); + // Note: The operation is meant mostly for in-house profiling. + // Therefore, we do not warn if probes manager cannot be initialized + + if (mProbesManager) { + mPlacesInitCompleteProbe = + mProbesManager-> + GetProbe(kPlacesInitCompleteCID, + NS_LITERAL_CSTRING("places-init-complete")); + NS_WARNING_ASSERTION(mPlacesInitCompleteProbe, + "Cannot initialize probe 'places-init-complete'"); + + mSessionWindowRestoredProbe = + mProbesManager-> + GetProbe(kSessionStoreWindowRestoredCID, + NS_LITERAL_CSTRING("sessionstore-windows-restored")); + NS_WARNING_ASSERTION( + mSessionWindowRestoredProbe, + "Cannot initialize probe 'sessionstore-windows-restored'"); + + mXPCOMShutdownProbe = + mProbesManager-> + GetProbe(kXPCOMShutdownCID, + NS_LITERAL_CSTRING("xpcom-shutdown")); + NS_WARNING_ASSERTION(mXPCOMShutdownProbe, + "Cannot initialize probe 'xpcom-shutdown'"); + + rv = mProbesManager->StartSession(); + NS_WARNING_ASSERTION(NS_SUCCEEDED(rv), + "Cannot initialize system probe manager"); + } +#endif //defined(XP_WIN) + + return NS_OK; +} + + +// +// nsAppStartup->nsISupports +// + +NS_IMPL_ISUPPORTS(nsAppStartup, + nsIAppStartup, + nsIWindowCreator, + nsIWindowCreator2, + nsIObserver, + nsISupportsWeakReference) + + +// +// nsAppStartup->nsIAppStartup +// + +NS_IMETHODIMP +nsAppStartup::CreateHiddenWindow() +{ +#if defined(MOZ_WIDGET_UIKIT) + return NS_OK; +#else + nsCOMPtr<nsIAppShellService> appShellService + (do_GetService(NS_APPSHELLSERVICE_CONTRACTID)); + NS_ENSURE_TRUE(appShellService, NS_ERROR_FAILURE); + + return appShellService->CreateHiddenWindow(); +#endif +} + + +NS_IMETHODIMP +nsAppStartup::DestroyHiddenWindow() +{ +#if defined(MOZ_WIDGET_UIKIT) + return NS_OK; +#else + nsCOMPtr<nsIAppShellService> appShellService + (do_GetService(NS_APPSHELLSERVICE_CONTRACTID)); + NS_ENSURE_TRUE(appShellService, NS_ERROR_FAILURE); + + return appShellService->DestroyHiddenWindow(); +#endif +} + +NS_IMETHODIMP +nsAppStartup::Run(void) +{ + NS_ASSERTION(!mRunning, "Reentrant appstartup->Run()"); + + // If we have no windows open and no explicit calls to + // enterLastWindowClosingSurvivalArea, or somebody has explicitly called + // quit, don't bother running the event loop which would probably leave us + // with a zombie process. + + if (!mShuttingDown && mConsiderQuitStopper != 0) { + mRunning = true; + + nsresult rv = mAppShell->Run(); + if (NS_FAILED(rv)) + return rv; + } + + nsresult retval = NS_OK; + if (mRestart) { + retval = NS_SUCCESS_RESTART_APP; + } else if (mRestartNotSameProfile) { + retval = NS_SUCCESS_RESTART_APP_NOT_SAME_PROFILE; + } + + return retval; +} + + + +NS_IMETHODIMP +nsAppStartup::Quit(uint32_t aMode) +{ + uint32_t ferocity = (aMode & 0xF); + + // Quit the application. We will asynchronously call the appshell's + // Exit() method via nsAppExitEvent to allow one last pass + // through any events in the queue. This guarantees a tidy cleanup. + nsresult rv = NS_OK; + bool postedExitEvent = false; + + if (mShuttingDown) + return NS_OK; + + // If we're considering quitting, we will only do so if: + if (ferocity == eConsiderQuit) { + if (mConsiderQuitStopper == 0) { + // there are no windows... + ferocity = eAttemptQuit; + } + } + + nsCOMPtr<nsIObserverService> obsService; + if (ferocity == eAttemptQuit || ferocity == eForceQuit) { + + nsCOMPtr<nsISimpleEnumerator> windowEnumerator; + nsCOMPtr<nsIWindowMediator> mediator (do_GetService(NS_WINDOWMEDIATOR_CONTRACTID)); + if (mediator) { + mediator->GetEnumerator(nullptr, getter_AddRefs(windowEnumerator)); + if (windowEnumerator) { + bool more; + windowEnumerator->HasMoreElements(&more); + // If we reported no windows, we definitely shouldn't be + // iterating any here. + MOZ_ASSERT_IF(!mConsiderQuitStopper, !more); + + while (more) { + nsCOMPtr<nsISupports> window; + windowEnumerator->GetNext(getter_AddRefs(window)); + nsCOMPtr<nsPIDOMWindowOuter> domWindow(do_QueryInterface(window)); + if (domWindow) { + MOZ_ASSERT(domWindow->IsOuterWindow()); + if (!domWindow->CanClose()) + return NS_OK; + } + windowEnumerator->HasMoreElements(&more); + } + } + } + + PROFILER_MARKER("Shutdown start"); + mShuttingDown = true; + if (!mRestart) { + mRestart = (aMode & eRestart) != 0; + } + + if (!mRestartNotSameProfile) { + mRestartNotSameProfile = (aMode & eRestartNotSameProfile) != 0; + } + + if (mRestart || mRestartNotSameProfile) { + // Mark the next startup as a restart. + PR_SetEnv("MOZ_APP_RESTART=1"); + + /* Firefox-restarts reuse the process so regular process start-time isn't + a useful indicator of startup time anymore. */ + TimeStamp::RecordProcessRestart(); + } + + obsService = mozilla::services::GetObserverService(); + + if (!mAttemptingQuit) { + mAttemptingQuit = true; + if (obsService) + obsService->NotifyObservers(nullptr, "quit-application-granted", nullptr); + } + + /* Enumerate through each open window and close it. It's important to do + this before we forcequit because this can control whether we really quit + at all. e.g. if one of these windows has an unload handler that + opens a new window. Ugh. I know. */ + CloseAllWindows(); + + if (mediator) { + if (ferocity == eAttemptQuit) { + ferocity = eForceQuit; // assume success + + /* Were we able to immediately close all windows? if not, eAttemptQuit + failed. This could happen for a variety of reasons; in fact it's + very likely. Perhaps we're being called from JS and the window->Close + method hasn't had a chance to wrap itself up yet. So give up. + We'll return (with eConsiderQuit) as the remaining windows are + closed. */ + mediator->GetEnumerator(nullptr, getter_AddRefs(windowEnumerator)); + if (windowEnumerator) { + bool more; + while (windowEnumerator->HasMoreElements(&more), more) { + /* we can't quit immediately. we'll try again as the last window + finally closes. */ + ferocity = eAttemptQuit; + nsCOMPtr<nsISupports> window; + windowEnumerator->GetNext(getter_AddRefs(window)); + nsCOMPtr<nsPIDOMWindowOuter> domWindow = do_QueryInterface(window); + if (domWindow) { + if (!domWindow->Closed()) { + rv = NS_ERROR_FAILURE; + break; + } + } + } + } + } + } + } + + if (ferocity == eForceQuit) { + // do it! + + // No chance of the shutdown being cancelled from here on; tell people + // we're shutting down for sure while all services are still available. + if (obsService) { + NS_NAMED_LITERAL_STRING(shutdownStr, "shutdown"); + NS_NAMED_LITERAL_STRING(restartStr, "restart"); + obsService->NotifyObservers(nullptr, "quit-application", + (mRestart || mRestartNotSameProfile) ? + restartStr.get() : shutdownStr.get()); + } + + if (!mRunning) { + postedExitEvent = true; + } + else { + // no matter what, make sure we send the exit event. If + // worst comes to worst, we'll do a leaky shutdown but we WILL + // shut down. Well, assuming that all *this* stuff works ;-). + nsCOMPtr<nsIRunnable> event = new nsAppExitEvent(this); + rv = NS_DispatchToCurrentThread(event); + if (NS_SUCCEEDED(rv)) { + postedExitEvent = true; + } + else { + NS_WARNING("failed to dispatch nsAppExitEvent"); + } + } + } + + // turn off the reentrancy check flag, but not if we have + // more asynchronous work to do still. + if (!postedExitEvent) + mShuttingDown = false; + return rv; +} + + +void +nsAppStartup::CloseAllWindows() +{ + nsCOMPtr<nsIWindowMediator> mediator + (do_GetService(NS_WINDOWMEDIATOR_CONTRACTID)); + + nsCOMPtr<nsISimpleEnumerator> windowEnumerator; + + mediator->GetEnumerator(nullptr, getter_AddRefs(windowEnumerator)); + + if (!windowEnumerator) + return; + + bool more; + while (NS_SUCCEEDED(windowEnumerator->HasMoreElements(&more)) && more) { + nsCOMPtr<nsISupports> isupports; + if (NS_FAILED(windowEnumerator->GetNext(getter_AddRefs(isupports)))) + break; + + nsCOMPtr<nsPIDOMWindowOuter> window = do_QueryInterface(isupports); + NS_ASSERTION(window, "not an nsPIDOMWindow"); + if (window) { + MOZ_ASSERT(window->IsOuterWindow()); + window->ForceClose(); + } + } +} + +NS_IMETHODIMP +nsAppStartup::EnterLastWindowClosingSurvivalArea(void) +{ + ++mConsiderQuitStopper; + return NS_OK; +} + + +NS_IMETHODIMP +nsAppStartup::ExitLastWindowClosingSurvivalArea(void) +{ + NS_ASSERTION(mConsiderQuitStopper > 0, "consider quit stopper out of bounds"); + --mConsiderQuitStopper; + + if (mRunning) + Quit(eConsiderQuit); + + return NS_OK; +} + +// +// nsAppStartup->nsIAppStartup2 +// + +NS_IMETHODIMP +nsAppStartup::GetShuttingDown(bool *aResult) +{ + *aResult = mShuttingDown; + return NS_OK; +} + +NS_IMETHODIMP +nsAppStartup::GetStartingUp(bool *aResult) +{ + *aResult = mStartingUp; + return NS_OK; +} + +NS_IMETHODIMP +nsAppStartup::DoneStartingUp() +{ + // This must be called once at most + MOZ_ASSERT(mStartingUp); + + mStartingUp = false; + return NS_OK; +} + +NS_IMETHODIMP +nsAppStartup::GetRestarting(bool *aResult) +{ + *aResult = mRestart; + return NS_OK; +} + +NS_IMETHODIMP +nsAppStartup::GetWasRestarted(bool *aResult) +{ + char *mozAppRestart = PR_GetEnv("MOZ_APP_RESTART"); + + /* When calling PR_SetEnv() with an empty value the existing variable may + * be unset or set to the empty string depending on the underlying platform + * thus we have to check if the variable is present and not empty. */ + *aResult = mozAppRestart && (strcmp(mozAppRestart, "") != 0); + + return NS_OK; +} + +NS_IMETHODIMP +nsAppStartup::SetInterrupted(bool aInterrupted) +{ + mInterrupted = aInterrupted; + return NS_OK; +} + +NS_IMETHODIMP +nsAppStartup::GetInterrupted(bool *aInterrupted) +{ + *aInterrupted = mInterrupted; + return NS_OK; +} + +// +// nsAppStartup->nsIWindowCreator +// + +NS_IMETHODIMP +nsAppStartup::CreateChromeWindow(nsIWebBrowserChrome *aParent, + uint32_t aChromeFlags, + nsIWebBrowserChrome **_retval) +{ + bool cancel; + return CreateChromeWindow2(aParent, aChromeFlags, 0, nullptr, nullptr, &cancel, _retval); +} + + +// +// nsAppStartup->nsIWindowCreator2 +// + +NS_IMETHODIMP +nsAppStartup::SetScreenId(uint32_t aScreenId) +{ + nsCOMPtr<nsIAppShellService> appShell(do_GetService(NS_APPSHELLSERVICE_CONTRACTID)); + if (!appShell) { + return NS_ERROR_FAILURE; + } + + return appShell->SetScreenId(aScreenId); +} + +NS_IMETHODIMP +nsAppStartup::CreateChromeWindow2(nsIWebBrowserChrome *aParent, + uint32_t aChromeFlags, + uint32_t aContextFlags, + nsITabParent *aOpeningTab, + mozIDOMWindowProxy* aOpener, + bool *aCancel, + nsIWebBrowserChrome **_retval) +{ + NS_ENSURE_ARG_POINTER(aCancel); + NS_ENSURE_ARG_POINTER(_retval); + *aCancel = false; + *_retval = 0; + + // Non-modal windows cannot be opened if we are attempting to quit + if (mAttemptingQuit && (aChromeFlags & nsIWebBrowserChrome::CHROME_MODAL) == 0) + return NS_ERROR_ILLEGAL_DURING_SHUTDOWN; + + nsCOMPtr<nsIXULWindow> newWindow; + + if (aParent) { + nsCOMPtr<nsIXULWindow> xulParent(do_GetInterface(aParent)); + NS_ASSERTION(xulParent, "window created using non-XUL parent. that's unexpected, but may work."); + + if (xulParent) + xulParent->CreateNewWindow(aChromeFlags, aOpeningTab, aOpener, getter_AddRefs(newWindow)); + // And if it fails, don't try again without a parent. It could fail + // intentionally (bug 115969). + } else { // try using basic methods: + /* You really shouldn't be making dependent windows without a parent. + But unparented modal (and therefore dependent) windows happen + in our codebase, so we allow it after some bellyaching: */ + if (aChromeFlags & nsIWebBrowserChrome::CHROME_DEPENDENT) + NS_WARNING("dependent window created without a parent"); + + nsCOMPtr<nsIAppShellService> appShell(do_GetService(NS_APPSHELLSERVICE_CONTRACTID)); + if (!appShell) + return NS_ERROR_FAILURE; + + appShell->CreateTopLevelWindow(0, 0, aChromeFlags, + nsIAppShellService::SIZE_TO_CONTENT, + nsIAppShellService::SIZE_TO_CONTENT, + aOpeningTab, aOpener, + getter_AddRefs(newWindow)); + } + + // if anybody gave us anything to work with, use it + if (newWindow) { + newWindow->SetContextFlags(aContextFlags); + nsCOMPtr<nsIInterfaceRequestor> thing(do_QueryInterface(newWindow)); + if (thing) + CallGetInterface(thing.get(), _retval); + } + + return *_retval ? NS_OK : NS_ERROR_FAILURE; +} + + +// +// nsAppStartup->nsIObserver +// + +NS_IMETHODIMP +nsAppStartup::Observe(nsISupports *aSubject, + const char *aTopic, const char16_t *aData) +{ + NS_ASSERTION(mAppShell, "appshell service notified before appshell built"); + if (!strcmp(aTopic, "quit-application-forced")) { + mShuttingDown = true; + } + else if (!strcmp(aTopic, "profile-change-teardown")) { + if (!mShuttingDown) { + EnterLastWindowClosingSurvivalArea(); + CloseAllWindows(); + ExitLastWindowClosingSurvivalArea(); + } + } else if (!strcmp(aTopic, "xul-window-registered")) { + EnterLastWindowClosingSurvivalArea(); + } else if (!strcmp(aTopic, "xul-window-destroyed")) { + ExitLastWindowClosingSurvivalArea(); + } else if (!strcmp(aTopic, "sessionstore-windows-restored")) { + StartupTimeline::Record(StartupTimeline::SESSION_RESTORED); + IOInterposer::EnteringNextStage(); +#if defined(XP_WIN) + if (mSessionWindowRestoredProbe) { + mSessionWindowRestoredProbe->Trigger(); + } + } else if (!strcmp(aTopic, "places-init-complete")) { + if (mPlacesInitCompleteProbe) { + mPlacesInitCompleteProbe->Trigger(); + } +#endif //defined(XP_WIN) + } else if (!strcmp(aTopic, "sessionstore-init-started")) { + StartupTimeline::Record(StartupTimeline::SESSION_RESTORE_INIT); + } else if (!strcmp(aTopic, "xpcom-shutdown")) { + IOInterposer::EnteringNextStage(); +#if defined(XP_WIN) + if (mXPCOMShutdownProbe) { + mXPCOMShutdownProbe->Trigger(); + } +#endif // defined(XP_WIN) + } else if (!strcmp(aTopic, "quit-application")) { + StartupTimeline::Record(StartupTimeline::QUIT_APPLICATION); + } else if (!strcmp(aTopic, "profile-before-change")) { + StartupTimeline::Record(StartupTimeline::PROFILE_BEFORE_CHANGE); + } else { + NS_ERROR("Unexpected observer topic."); + } + + return NS_OK; +} + +NS_IMETHODIMP +nsAppStartup::GetStartupInfo(JSContext* aCx, JS::MutableHandle<JS::Value> aRetval) +{ + JS::Rooted<JSObject*> obj(aCx, JS_NewPlainObject(aCx)); + + aRetval.setObject(*obj); + + TimeStamp procTime = StartupTimeline::Get(StartupTimeline::PROCESS_CREATION); + TimeStamp now = TimeStamp::Now(); + PRTime absNow = PR_Now(); + + if (procTime.IsNull()) { + bool error = false; + + procTime = TimeStamp::ProcessCreation(error); + + StartupTimeline::Record(StartupTimeline::PROCESS_CREATION, procTime); + } + + for (int i = StartupTimeline::PROCESS_CREATION; + i < StartupTimeline::MAX_EVENT_ID; + ++i) + { + StartupTimeline::Event ev = static_cast<StartupTimeline::Event>(i); + TimeStamp stamp = StartupTimeline::Get(ev); + + if (stamp.IsNull() && (ev == StartupTimeline::MAIN)) { + // Always define main to aid with bug 689256. + stamp = procTime; + MOZ_ASSERT(!stamp.IsNull()); + } + + if (!stamp.IsNull()) { + if (stamp >= procTime) { + PRTime prStamp = ComputeAbsoluteTimestamp(absNow, now, stamp) + / PR_USEC_PER_MSEC; + JS::Rooted<JSObject*> date(aCx, JS::NewDateObject(aCx, JS::TimeClip(prStamp))); + JS_DefineProperty(aCx, obj, StartupTimeline::Describe(ev), date, JSPROP_ENUMERATE); + } + } + } + + return NS_OK; +} + +NS_IMETHODIMP +nsAppStartup::GetAutomaticSafeModeNecessary(bool *_retval) +{ + NS_ENSURE_ARG_POINTER(_retval); + + bool alwaysSafe = false; + Preferences::GetBool(kPrefAlwaysUseSafeMode, &alwaysSafe); + + if (!alwaysSafe) { +#if DEBUG + mIsSafeModeNecessary = false; +#else + mIsSafeModeNecessary &= !PR_GetEnv("MOZ_DISABLE_AUTO_SAFE_MODE"); +#endif + } + + *_retval = mIsSafeModeNecessary; + return NS_OK; +} + +NS_IMETHODIMP +nsAppStartup::TrackStartupCrashBegin(bool *aIsSafeModeNecessary) +{ + const int32_t MAX_TIME_SINCE_STARTUP = 6 * 60 * 60 * 1000; + const int32_t MAX_STARTUP_BUFFER = 10; + nsresult rv; + + mStartupCrashTrackingEnded = false; + + StartupTimeline::Record(StartupTimeline::STARTUP_CRASH_DETECTION_BEGIN); + + bool hasLastSuccess = Preferences::HasUserValue(kPrefLastSuccess); + if (!hasLastSuccess) { + // Clear so we don't get stuck with SafeModeNecessary returning true if we + // have had too many recent crashes and the last success pref is missing. + Preferences::ClearUser(kPrefRecentCrashes); + return NS_ERROR_NOT_AVAILABLE; + } + + bool inSafeMode = false; + nsCOMPtr<nsIXULRuntime> xr = do_GetService(XULRUNTIME_SERVICE_CONTRACTID); + NS_ENSURE_TRUE(xr, NS_ERROR_FAILURE); + + xr->GetInSafeMode(&inSafeMode); + + PRTime replacedLockTime; + rv = xr->GetReplacedLockTime(&replacedLockTime); + + if (NS_FAILED(rv) || !replacedLockTime) { + if (!inSafeMode) + Preferences::ClearUser(kPrefRecentCrashes); + GetAutomaticSafeModeNecessary(aIsSafeModeNecessary); + return NS_OK; + } + + // check whether safe mode is necessary + int32_t maxResumedCrashes = -1; + rv = Preferences::GetInt(kPrefMaxResumedCrashes, &maxResumedCrashes); + NS_ENSURE_SUCCESS(rv, NS_OK); + + int32_t recentCrashes = 0; + Preferences::GetInt(kPrefRecentCrashes, &recentCrashes); + mIsSafeModeNecessary = (recentCrashes > maxResumedCrashes && maxResumedCrashes != -1); + + // Bug 731613 - Don't check if the last startup was a crash if XRE_PROFILE_PATH is set. After + // profile manager, the profile lock's mod. time has been changed so can't be used on this startup. + // After a restart, it's safe to assume the last startup was successful. + char *xreProfilePath = PR_GetEnv("XRE_PROFILE_PATH"); + if (xreProfilePath) { + GetAutomaticSafeModeNecessary(aIsSafeModeNecessary); + return NS_ERROR_NOT_AVAILABLE; + } + + // time of last successful startup + int32_t lastSuccessfulStartup; + rv = Preferences::GetInt(kPrefLastSuccess, &lastSuccessfulStartup); + NS_ENSURE_SUCCESS(rv, rv); + + int32_t lockSeconds = (int32_t)(replacedLockTime / PR_MSEC_PER_SEC); + + // started close enough to good startup so call it good + if (lockSeconds <= lastSuccessfulStartup + MAX_STARTUP_BUFFER + && lockSeconds >= lastSuccessfulStartup - MAX_STARTUP_BUFFER) { + GetAutomaticSafeModeNecessary(aIsSafeModeNecessary); + return NS_OK; + } + + // sanity check that the pref set at last success is not greater than the current time + if (PR_Now() / PR_USEC_PER_SEC <= lastSuccessfulStartup) + return NS_ERROR_FAILURE; + + if (inSafeMode) { + GetAutomaticSafeModeNecessary(aIsSafeModeNecessary); + return NS_OK; + } + + PRTime now = (PR_Now() / PR_USEC_PER_MSEC); + // if the last startup attempt which crashed was in the last 6 hours + if (replacedLockTime >= now - MAX_TIME_SINCE_STARTUP) { + NS_WARNING("Last startup was detected as a crash."); + recentCrashes++; + rv = Preferences::SetInt(kPrefRecentCrashes, recentCrashes); + } else { + // Otherwise ignore that crash and all previous since it may not be applicable anymore + // and we don't want someone to get stuck in safe mode if their prefs are read-only. + rv = Preferences::ClearUser(kPrefRecentCrashes); + } + NS_ENSURE_SUCCESS(rv, rv); + + // recalculate since recent crashes count may have changed above + mIsSafeModeNecessary = (recentCrashes > maxResumedCrashes && maxResumedCrashes != -1); + + nsCOMPtr<nsIPrefService> prefs = Preferences::GetService(); + rv = prefs->SavePrefFile(nullptr); // flush prefs to disk since we are tracking crashes + NS_ENSURE_SUCCESS(rv, rv); + + GetAutomaticSafeModeNecessary(aIsSafeModeNecessary); + return rv; +} + +NS_IMETHODIMP +nsAppStartup::TrackStartupCrashEnd() +{ + bool inSafeMode = false; + nsCOMPtr<nsIXULRuntime> xr = do_GetService(XULRUNTIME_SERVICE_CONTRACTID); + if (xr) + xr->GetInSafeMode(&inSafeMode); + + // return if we already ended or we're restarting into safe mode + if (mStartupCrashTrackingEnded || (mIsSafeModeNecessary && !inSafeMode)) + return NS_OK; + mStartupCrashTrackingEnded = true; + + StartupTimeline::Record(StartupTimeline::STARTUP_CRASH_DETECTION_END); + + // Use the timestamp of XRE_main as an approximation for the lock file timestamp. + // See MAX_STARTUP_BUFFER for the buffer time period. + TimeStamp mainTime = StartupTimeline::Get(StartupTimeline::MAIN); + TimeStamp now = TimeStamp::Now(); + PRTime prNow = PR_Now(); + nsresult rv; + + if (mainTime.IsNull()) { + NS_WARNING("Could not get StartupTimeline::MAIN time."); + } else { + uint64_t lockFileTime = ComputeAbsoluteTimestamp(prNow, now, mainTime); + + rv = Preferences::SetInt(kPrefLastSuccess, + (int32_t)(lockFileTime / PR_USEC_PER_SEC)); + + if (NS_FAILED(rv)) + NS_WARNING("Could not set startup crash detection pref."); + } + + if (inSafeMode && mIsSafeModeNecessary) { + // On a successful startup in automatic safe mode, allow the user one more crash + // in regular mode before returning to safe mode. + int32_t maxResumedCrashes = 0; + int32_t prefType; + rv = Preferences::GetDefaultRootBranch()->GetPrefType(kPrefMaxResumedCrashes, &prefType); + NS_ENSURE_SUCCESS(rv, rv); + if (prefType == nsIPrefBranch::PREF_INT) { + rv = Preferences::GetInt(kPrefMaxResumedCrashes, &maxResumedCrashes); + NS_ENSURE_SUCCESS(rv, rv); + } + rv = Preferences::SetInt(kPrefRecentCrashes, maxResumedCrashes); + NS_ENSURE_SUCCESS(rv, rv); + } else if (!inSafeMode) { + // clear the count of recent crashes after a succesful startup when not in safe mode + rv = Preferences::ClearUser(kPrefRecentCrashes); + if (NS_FAILED(rv)) NS_WARNING("Could not clear startup crash count."); + } + nsCOMPtr<nsIPrefService> prefs = Preferences::GetService(); + rv = prefs->SavePrefFile(nullptr); // flush prefs to disk since we are tracking crashes + + return rv; +} + +NS_IMETHODIMP +nsAppStartup::RestartInSafeMode(uint32_t aQuitMode) +{ + PR_SetEnv("MOZ_SAFE_MODE_RESTART=1"); + this->Quit(aQuitMode | nsIAppStartup::eRestart); + + return NS_OK; +} + +NS_IMETHODIMP +nsAppStartup::CreateInstanceWithProfile(nsIToolkitProfile* aProfile) +{ + if (NS_WARN_IF(!aProfile)) { + return NS_ERROR_FAILURE; + } + + if (NS_WARN_IF(gAbsoluteArgv0Path.IsEmpty())) { + return NS_ERROR_FAILURE; + } + + nsCOMPtr<nsIFile> execPath; + nsresult rv = NS_NewNativeLocalFile(NS_ConvertUTF16toUTF8(gAbsoluteArgv0Path), + true, getter_AddRefs(execPath)); + if (NS_WARN_IF(NS_FAILED(rv))) { + return rv; + } + + nsCOMPtr<nsIProcess> process = do_CreateInstance(NS_PROCESS_CONTRACTID, &rv); + if (NS_WARN_IF(NS_FAILED(rv))) { + return rv; + } + + rv = process->Init(execPath); + if (NS_WARN_IF(NS_FAILED(rv))) { + return rv; + } + + nsAutoCString profileName; + rv = aProfile->GetName(profileName); + if (NS_WARN_IF(NS_FAILED(rv))) { + return rv; + } + +#if defined(XP_WIN) + const char *args[] = { "-no-remote", "-P", profileName.get() }; + rv = process->Run(false, args, 3); +#else + const char *args[] = { "-P", profileName.get() }; + rv = process->Run(false, args, 2); +#endif + if (NS_WARN_IF(NS_FAILED(rv))) { + return rv; + } + + return NS_OK; +} |