Bug 1606880 - Implement fast shutdown prefs r=froydnj
I originally had this as a few patches, but the work to fix test
failures and get the whole thing into a complete working state
quickly tangled them up. Apologies for that. To summarize what's
going on here, however:
- We introduce two prefs: shutdown.fastShutdownStage and
shutdown.lateWriteChecksStage. The latter pref is set to 1, which
will leave the existing late write checking behavior unchanged.
However, we introduce this pref to make it simpler in the future
to bump the late write checks window earlier in the shutdown cycle.
- We introduce an AppShutdown class, which will house static methods
and a small amount of state for unifying some shutdown logic. Most
importantly, it will now manage the state for app initiated restarts,
as well as the logic for performing a safe fast shutdown.
- We refactored the existing restart code to call into the new
AppShutdown file, so that if we are configured to actually perform
a fast shutdown, we will be able to run the necessary restart logic
immediately before doing so. Previously, the restart logic occurred
later in the shutdown cycle than our late write checking, meaning
if we were to simply exit the process at that point in time, we
would never run the restart coe.
- Lastly, we updated two locations which called TerminateProcess and/or
_exit(0) to call into the AppShutdown method (DoFastShutdown).
Differential Revision: https://phabricator.services.mozilla.com/D59196
--HG--
extra : moz-landing-system : lando
2020-01-29 15:29:43 +03:00
|
|
|
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
|
|
|
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
|
|
|
|
|
/* 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/. */
|
|
|
|
|
|
|
|
|
|
#ifndef ShutdownPhase_h
|
|
|
|
|
#define ShutdownPhase_h
|
|
|
|
|
|
|
|
|
|
namespace mozilla {
|
|
|
|
|
|
|
|
|
|
// Must be contiguous starting at 0
|
|
|
|
|
enum class ShutdownPhase {
|
|
|
|
|
NotInShutdown = 0,
|
2021-02-27 17:38:14 +03:00
|
|
|
AppShutdownConfirmed,
|
|
|
|
|
AppShutdownNetTeardown,
|
|
|
|
|
AppShutdownTeardown,
|
|
|
|
|
AppShutdown,
|
|
|
|
|
AppShutdownQM,
|
|
|
|
|
AppShutdownTelemetry,
|
|
|
|
|
XPCOMWillShutdown,
|
|
|
|
|
XPCOMShutdown,
|
|
|
|
|
XPCOMShutdownThreads,
|
|
|
|
|
XPCOMShutdownLoaders,
|
|
|
|
|
XPCOMShutdownFinal,
|
|
|
|
|
CCPostLastCycleCollection,
|
|
|
|
|
ShutdownPhase_Length, // never pass this value
|
|
|
|
|
First = AppShutdownConfirmed, // for iteration
|
|
|
|
|
Last = XPCOMShutdownFinal
|
Bug 1606880 - Implement fast shutdown prefs r=froydnj
I originally had this as a few patches, but the work to fix test
failures and get the whole thing into a complete working state
quickly tangled them up. Apologies for that. To summarize what's
going on here, however:
- We introduce two prefs: shutdown.fastShutdownStage and
shutdown.lateWriteChecksStage. The latter pref is set to 1, which
will leave the existing late write checking behavior unchanged.
However, we introduce this pref to make it simpler in the future
to bump the late write checks window earlier in the shutdown cycle.
- We introduce an AppShutdown class, which will house static methods
and a small amount of state for unifying some shutdown logic. Most
importantly, it will now manage the state for app initiated restarts,
as well as the logic for performing a safe fast shutdown.
- We refactored the existing restart code to call into the new
AppShutdown file, so that if we are configured to actually perform
a fast shutdown, we will be able to run the necessary restart logic
immediately before doing so. Previously, the restart logic occurred
later in the shutdown cycle than our late write checking, meaning
if we were to simply exit the process at that point in time, we
would never run the restart coe.
- Lastly, we updated two locations which called TerminateProcess and/or
_exit(0) to call into the AppShutdown method (DoFastShutdown).
Differential Revision: https://phabricator.services.mozilla.com/D59196
--HG--
extra : moz-landing-system : lando
2020-01-29 15:29:43 +03:00
|
|
|
};
|
|
|
|
|
|
|
|
|
|
} // namespace mozilla
|
|
|
|
|
|
2021-01-07 11:53:08 +03:00
|
|
|
#endif // ShutdownPhase_h
|
