horok/firefox
1
0
Fork 0
Code Activity
firefox/toolkit/components/startup/nsAppStartup.cpp
Daniel Baumann 5e9a113729
Adding upstream version 140.0. 
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
2025-06-25 09:37:52 +02:00

1106 lines
36 KiB
C++
Raw Permalink Blame History

/* -*- 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 "nsComponentManagerUtils.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 "nsIToolkitProfile.h"
#include "nsIWebBrowserChrome.h"
#include "nsIWindowMediator.h"
#include "nsIXULRuntime.h"
#include "nsIAppWindow.h"
#include "nsNativeCharsetUtils.h"
#include "nsThreadUtils.h"
#include "nsString.h"
#include "mozilla/AppShutdown.h"
#include "mozilla/Preferences.h"
#include "mozilla/ProfilerMarkers.h"
#include "mozilla/ResultExtensions.h"
#include "mozilla/Try.h"
#include "mozilla/Unused.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 "jsapi.h"
#include "js/Date.h"
#include "js/PropertyAndElement.h" // JS_DefineProperty
#include "prenv.h"
#include "nsAppDirectoryServiceDefs.h"
#if defined(XP_WIN)
// Prevent collisions with nsAppStartup::GetStartupInfo()
# undef GetStartupInfo
# include <windows.h>
#elif defined(XP_DARWIN)
# include <mach/mach_time.h>
#endif
#include "mozilla/IOInterposer.h"
#include "mozilla/Telemetry.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"
#define kNanosecondsPerSecond 1000000000.0
#if defined(XP_WIN)
# include "mozilla/PreXULSkeletonUI.h"
# 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)
: mozilla::Runnable("nsAppExitEvent"), 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
*/
static uint64_t ComputeAbsoluteTimestamp(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),
mIsSafeModeNecessary(false),
mStartupCrashTrackingEnded(false) {
char* mozAppSilentStart = PR_GetEnv("MOZ_APP_SILENT_START");
/* 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. */
mWasSilentlyStarted =
mozAppSilentStart && (strcmp(mozAppSilentStart, "") != 0);
// Make sure to clear this in case we restart again non-silently.
PR_SetEnv("MOZ_APP_SILENT_START=");
#ifdef XP_WIN
char* mozAppAllowWindowless = PR_GetEnv("MOZ_APP_ALLOW_WINDOWLESS");
mAllowWindowless =
mozAppAllowWindowless && (strcmp(mozAppAllowWindowless, "") != 0);
#endif
}
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, "Application startup probe"_ns);
// 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, "places-init-complete"_ns);
NS_WARNING_ASSERTION(mPlacesInitCompleteProbe,
"Cannot initialize probe 'places-init-complete'");
mSessionWindowRestoredProbe = mProbesManager->GetProbe(
kSessionStoreWindowRestoredCID, "sessionstore-windows-restored"_ns);
NS_WARNING_ASSERTION(
mSessionWindowRestoredProbe,
"Cannot initialize probe 'sessionstore-windows-restored'");
mXPCOMShutdownProbe =
mProbesManager->GetProbe(kXPCOMShutdownCID, "xpcom-shutdown"_ns);
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, 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) {
#ifdef XP_MACOSX
EnterLastWindowClosingSurvivalArea();
#elif defined(XP_WIN)
if (mAllowWindowless) {
EnterLastWindowClosingSurvivalArea();
}
#endif
mRunning = true;
nsresult rv = mAppShell->Run();
if (NS_FAILED(rv)) return rv;
}
// Make sure that the appropriate quit notifications have been dispatched
// regardless of whether the event loop has spun or not. Note that this call
// is a no-op if Quit has already been called previously.
bool userAllowedQuit = true;
Quit(eForceQuit, 0, &userAllowedQuit);
nsresult retval = NS_OK;
if (mozilla::AppShutdown::IsRestarting()) {
retval = NS_SUCCESS_RESTART_APP;
}
return retval;
}
NS_IMETHODIMP
nsAppStartup::Quit(uint32_t aMode, int aExitCode, bool* aUserAllowedQuit) {
if ((aMode & eSilently) != 0 && (aMode & eRestart) == 0) {
// eSilently is only valid when combined with eRestart.
return NS_ERROR_INVALID_ARG;
}
uint32_t ferocity = (aMode & 0xF);
// If the shutdown was cancelled due to a hidden window or
// because one of the windows was not permitted to be closed,
// return NS_OK with |aUserAllowedQuit| = false.
*aUserAllowedQuit = false;
// 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) {
#ifdef XP_MACOSX
nsCOMPtr<nsIAppShellService> appShell(
do_GetService(NS_APPSHELLSERVICE_CONTRACTID));
int32_t suspiciousCount = 1;
#endif
if (mConsiderQuitStopper == 0) {
// there are no windows...
ferocity = eAttemptQuit;
}
#ifdef XP_MACOSX
else if (mConsiderQuitStopper == suspiciousCount) {
// Failure shouldn't be fatal, but will abort quit attempt:
if (!appShell) return NS_OK;
bool hasHiddenWindow = false;
appShell->GetHasHiddenWindow(&hasHiddenWindow);
// If there's a hidden window, we won't quit:
if (hasHiddenWindow) {
return NS_OK;
}
ferocity = eAttemptQuit;
}
#endif
}
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) {
if (!domWindow->CanClose()) {
return NS_OK;
}
}
windowEnumerator->HasMoreElements(&more);
}
}
}
// We passed the last line of a shutdown to maybe not happen for legit
// reasons after checking CanClose() for all windows above. Now we are
// supposed to go away (or restart), for sure.
PROFILER_MARKER_UNTYPED("Shutdown start", OTHER);
mozilla::RecordShutdownStartTimeStamp();
*aUserAllowedQuit = true;
mShuttingDown = true;
auto shutdownMode = ((aMode & eRestart) != 0)
? mozilla::AppShutdownMode::Restart
: mozilla::AppShutdownMode::Normal;
// TODO: Add (or pass in) more reasons here for Mac and Linux, see
// bug 1827643 and bug 1827644.
// See as example the Windows WM_ENDSESSION handling.
auto shutdownReason = ((aMode & eRestart) != 0)
? mozilla::AppShutdownReason::AppRestart
: mozilla::AppShutdownReason::AppClose;
mozilla::AppShutdown::Init(shutdownMode, aExitCode, shutdownReason);
if (mozilla::AppShutdown::IsRestarting()) {
// 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();
}
if ((aMode & eSilently) != 0) {
// Mark the next startup as a silent restart.
// See the eSilently definition for details.
PR_SetEnv("MOZ_APP_SILENT_START=1");
}
obsService = mozilla::services::GetObserverService();
if (!mAttemptingQuit) {
mAttemptingQuit = true;
#ifdef XP_MACOSX
// now even the Mac wants to quit when the last window is closed
ExitLastWindowClosingSurvivalArea();
#elif defined(XP_WIN)
if (mAllowWindowless) {
ExitLastWindowClosingSurvivalArea();
}
#endif
if (obsService)
obsService->NotifyObservers(nullptr, "quit-application-granted",
nullptr);
}
// Enumerate through each open window and close it.
CloseAllWindows();
if (mediator) {
if (ferocity == eAttemptQuit) {
ferocity = eForceQuit; // assume success
// TODO: The above CloseAllWindows() does a window->ForceClose() which
// seems to have no way of saying that we refuse to close. It dispatches
// events and sends notifications which might race with the below check.
// However the flag we check below with domWindow->Closed() should have
// always been set synchronously above. In other words: most likely this
// entire check can go away and maybe CloseAllWindows could be renamed
// to ForceCloseAllWindows.
/* 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 (NS_SUCCEEDED(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()) {
MOZ_DIAGNOSTIC_ASSERT(false,
"CloseAllWindows() did not succeed.");
rv = NS_ERROR_FAILURE;
break;
}
}
}
}
}
}
}
if (ferocity == eForceQuit) {
// do it!
mozilla::AppShutdown::OnShutdownConfirmed();
// No chance of the shutdown being cancelled from here on; tell people
// we're shutting down for sure while all services are still available.
bool isRestarting = mozilla::AppShutdown::IsRestarting();
mozilla::AppShutdown::AdvanceShutdownPhase(
mozilla::ShutdownPhase::AppShutdownConfirmed,
isRestarting ? u"restart" : u"shutdown");
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;
}
// Ensure ShutdownPhase.h and nsIAppStartup.idl are in sync.
static_assert(int(nsIAppStartup::SHUTDOWN_PHASE_NOTINSHUTDOWN) ==
int(mozilla::ShutdownPhase::NotInShutdown) &&
int(nsIAppStartup::SHUTDOWN_PHASE_APPSHUTDOWNCONFIRMED) ==
int(mozilla::ShutdownPhase::AppShutdownConfirmed) &&
int(nsIAppStartup::SHUTDOWN_PHASE_APPSHUTDOWNNETTEARDOWN) ==
int(mozilla::ShutdownPhase::AppShutdownNetTeardown) &&
int(nsIAppStartup::SHUTDOWN_PHASE_APPSHUTDOWNTEARDOWN) ==
int(mozilla::ShutdownPhase::AppShutdownTeardown) &&
int(nsIAppStartup::SHUTDOWN_PHASE_APPSHUTDOWN) ==
int(mozilla::ShutdownPhase::AppShutdown) &&
int(nsIAppStartup::SHUTDOWN_PHASE_APPSHUTDOWNQM) ==
int(mozilla::ShutdownPhase::AppShutdownQM) &&
int(nsIAppStartup::SHUTDOWN_PHASE_APPSHUTDOWNRELEMETRY) ==
int(mozilla::ShutdownPhase::AppShutdownTelemetry) &&
int(nsIAppStartup::SHUTDOWN_PHASE_XPCOMWILLSHUTDOWN) ==
int(mozilla::ShutdownPhase::XPCOMWillShutdown) &&
int(nsIAppStartup::SHUTDOWN_PHASE_XPCOMSHUTDOWN) ==
int(mozilla::ShutdownPhase::XPCOMShutdown),
"IDLShutdownPhase values are as expected");
// Helper for safe conversion to native shutdown phases.
Result<ShutdownPhase, nsresult> IDLShutdownPhaseToNative(
nsAppStartup::IDLShutdownPhase aPhase) {
if (uint8_t(aPhase) <= nsIAppStartup::SHUTDOWN_PHASE_XPCOMSHUTDOWN) {
return ShutdownPhase(aPhase);
}
return Err(NS_ERROR_ILLEGAL_VALUE);
}
NS_IMETHODIMP
nsAppStartup::AdvanceShutdownPhase(IDLShutdownPhase aPhase) {
ShutdownPhase nativePhase;
MOZ_TRY_VAR(nativePhase, IDLShutdownPhaseToNative(aPhase));
AppShutdown::AdvanceShutdownPhase(nativePhase);
return NS_OK;
}
NS_IMETHODIMP
nsAppStartup::IsInOrBeyondShutdownPhase(IDLShutdownPhase aPhase,
bool* aIsInOrBeyond) {
ShutdownPhase nativePhase;
MOZ_TRY_VAR(nativePhase, IDLShutdownPhaseToNative(aPhase));
*aIsInOrBeyond = AppShutdown::IsInOrBeyond(nativePhase);
return NS_OK;
}
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) {
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) {
bool userAllowedQuit = false;
// A previous call to Quit may have told all windows to close and then
// bailed out waiting for that to happen. This is how we get back into Quit
// after each window closes so the exit process can continue when ready.
// Make sure to pass along the exit code that was initially passed to Quit.
Quit(eConsiderQuit, mozilla::AppShutdown::GetExitCode(), &userAllowedQuit);
}
return NS_OK;
}
//
// nsAppStartup->nsIAppStartup2
//
NS_IMETHODIMP
nsAppStartup::GetShuttingDown(bool* aResult) {
*aResult = AppShutdown::IsInOrBeyond(ShutdownPhase::AppShutdownConfirmed);
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 = mozilla::AppShutdown::IsRestarting();
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::GetWasSilentlyStarted(bool* aResult) {
*aResult = mWasSilentlyStarted;
return NS_OK;
}
NS_IMETHODIMP
nsAppStartup::GetSecondsSinceLastOSRestart(int64_t* aResult) {
#if defined(XP_WIN)
*aResult = int64_t(GetTickCount64() / 1000ull);
return NS_OK;
#elif defined(XP_DARWIN)
uint64_t absTime = mach_absolute_time();
mach_timebase_info_data_t timebaseInfo;
mach_timebase_info(&timebaseInfo);
double toNanoseconds =
double(timebaseInfo.numer) / double(timebaseInfo.denom);
*aResult =
std::llround(double(absTime) * toNanoseconds / kNanosecondsPerSecond);
return NS_OK;
#else
return NS_ERROR_NOT_IMPLEMENTED;
#endif
}
NS_IMETHODIMP
nsAppStartup::GetShowedPreXULSkeletonUI(bool* aResult) {
#if defined(XP_WIN)
*aResult = GetPreXULSkeletonUIWasShown();
#else
*aResult = false;
#endif
return NS_OK;
}
//
// nsAppStartup->nsIWindowCreator
//
NS_IMETHODIMP
nsAppStartup::CreateChromeWindow(nsIWebBrowserChrome* aParent,
uint32_t aChromeFlags,
nsIOpenWindowInfo* aOpenWindowInfo,
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;
// Fission windows must also be marked as remote
if ((aChromeFlags & nsIWebBrowserChrome::CHROME_FISSION_WINDOW) &&
!(aChromeFlags & nsIWebBrowserChrome::CHROME_REMOTE_WINDOW)) {
NS_WARNING("Cannot create non-remote fission window!");
return NS_ERROR_FAILURE;
}
nsCOMPtr<nsIAppWindow> newWindow;
if (aParent) {
nsCOMPtr<nsIAppWindow> appParent(do_GetInterface(aParent));
NS_ASSERTION(appParent,
"window created using non-app parent. that's unexpected, but "
"may work.");
if (appParent)
appParent->CreateNewWindow(aChromeFlags, aOpenWindowInfo,
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:
MOZ_RELEASE_ASSERT(!aOpenWindowInfo,
"Unexpected aOpenWindowInfo, we shouldn't ever have an "
"nsIOpenWindowInfo without a parent");
/* 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, getter_AddRefs(newWindow));
}
// if anybody gave us anything to work with, use it
if (newWindow) {
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);
if (procTime.IsNull()) {
procTime = TimeStamp::ProcessCreation();
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(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 = static_cast<Preferences*>(prefs.get())
->SavePrefFileBlocking(); // flush prefs to disk since we are
// tracking crashes
NS_ENSURE_SUCCESS(rv, rv);
GetAutomaticSafeModeNecessary(aIsSafeModeNecessary);
return rv;
}
static nsresult RemoveIncompleteStartupFile() {
nsCOMPtr<nsIFile> file;
MOZ_TRY(NS_GetSpecialDirectory(NS_APP_USER_PROFILE_LOCAL_50_DIR,
getter_AddRefs(file)));
return NS_DispatchBackgroundTask(NS_NewRunnableFunction(
"RemoveIncompleteStartupFile", [file = std::move(file)] {
auto incompleteStartup =
mozilla::startup::GetIncompleteStartupFile(file);
if (NS_WARN_IF(incompleteStartup.isErr())) {
return;
}
Unused << NS_WARN_IF(
NS_FAILED(incompleteStartup.unwrap()->Remove(false)));
}));
}
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);
// Remove the incomplete startup canary file, so the next startup doesn't
// detect a recent startup crash.
Unused << NS_WARN_IF(NS_FAILED(RemoveIncompleteStartupFile()));
// 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);
nsresult rv;
if (mainTime.IsNull()) {
NS_WARNING("Could not get StartupTimeline::MAIN time.");
} else {
uint64_t lockFileTime = ComputeAbsoluteTimestamp(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::GetRootBranch(PrefValueKind::Default)
->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();
// save prefs to disk since we are tracking crashes. This may be
// asynchronous, so a crash could sneak in that we would mistake for
// a start up crash. See bug 789945 and bug 1361262.
rv = prefs->SavePrefFile(nullptr);
return rv;
}
NS_IMETHODIMP
nsAppStartup::RestartInSafeMode(uint32_t aQuitMode) {
PR_SetEnv("MOZ_SAFE_MODE_RESTART=1");
bool userAllowedQuit = false;
this->Quit(aQuitMode | nsIAppStartup::eRestart, 0, &userAllowedQuit);
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_NewLocalFile(gAbsoluteArgv0Path, 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;
}
NS_ConvertUTF8toUTF16 wideName(profileName);
const char16_t* args[] = {u"-P", wideName.get()};
rv = process->Runw(false, args, 2);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
return NS_OK;
}
View git blame Copy permalink