gecko-dev/xpcom/threads/MainThreadIdlePeriod.cpp
Mike Hommey 25134bc800 Bug 1733308 - Fix non-unified builds errors in xpcom/threads. r=xpcom-reviewers,mccr8
xpcom/threads/CPUUsageWatcher.cpp:43:23: error: unused variable 'kCPUCheckInterval' [-Werror,-Wunused-const-variable]
xpcom/threads/CPUUsageWatcher.cpp:109:23: error: unused variable 'kCPUCheckInterval' [-Werror,-Wunused-const-variable]
xpcom/threads/InputEventStatistics.cpp:18:5: error: use of undeclared identifier 'ClearOnShutdown'
xpcom/threads/InputTaskManager.cpp:62:9: error: use of undeclared identifier 'InputEventStatistics'
xpcom/threads/InputTaskManager.cpp:89:3: error: use of undeclared identifier 'InputEventStatistics'
xpcom/threads/InputTaskManager.cpp:105:7: error: use of undeclared identifier 'nsRefreshDriver'
xpcom/threads/InputTaskManager.cpp:124:9: error: use of undeclared identifier 'InputEventStatistics'
xpcom/threads/MainThreadIdlePeriod.cpp:29:23: error: unused variable 'kMaxTimerThreadBoundClamp' [-Werror,-Wunused-const-variable]
xpcom/threads/VsyncTaskManager.h:15:67: error: implicit instantiation of undefined template 'mozilla::StaticRefPtr<mozilla::VsyncTaskManager>'
xpcom/threads/VsyncTaskManager.h:16:52: error: no viable overloaded '='
xpcom/threads/nsMemoryPressure.cpp:61:12: error: use of undeclared identifier 'nsIObserverService'
xpcom/threads/nsMemoryPressure.cpp:61:37: error: use of undeclared identifier 'services'
xpcom/threads/nsThreadManager.cpp:422:28: error: member access into incomplete type 'mozilla::ThreadEventTarget'
xpcom/threads/nsThreadManager.cpp:661:5: error: use of undeclared identifier 'CrashReporter'
xpcom/threads/nsThreadManager.cpp:662:59: error: expected ')'
xpcom/threads/nsThreadManager.cpp:662:9: error: use of undeclared identifier 'CrashReporter'
xpcom/threads/nsThreadManager.cpp:669:7: error: use of undeclared identifier 'CrashReporter'
xpcom/threads/nsThreadManager.cpp:670:11: error: use of undeclared identifier 'CrashReporter'
xpcom/threads/nsThreadManager.cpp:670:61: error: expected ')'
xpcom/threads/nsThreadManager.cpp:672:7: error: use of undeclared identifier 'CrashReporter'
xpcom/threads/nsThreadManager.cpp:673:11: error: use of undeclared identifier 'CrashReporter'
xpcom/threads/nsThreadUtils.cpp:636:13: error: member access into incomplete type 'mozilla::Task'

Differential Revision: https://phabricator.services.mozilla.com/D127041
2021-10-01 01:49:18 +00:00

75 lines
2.7 KiB
C++

/* -*- 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/. */
#include "MainThreadIdlePeriod.h"
#include "mozilla/Maybe.h"
#include "mozilla/Preferences.h"
#include "mozilla/StaticPrefs_idle_period.h"
#include "mozilla/dom/Document.h"
#include "VRManagerChild.h"
#include "nsRefreshDriver.h"
#include "nsThreadUtils.h"
// The amount of idle time (milliseconds) reserved for a long idle period.
static const double kLongIdlePeriodMS = 50.0;
// The minimum amount of time (milliseconds) required for an idle period to be
// scheduled on the main thread. N.B. layout.idle_period.time_limit adds
// padding at the end of the idle period, which makes the point in time that we
// expect to become busy again be:
// now + idle_period.min + layout.idle_period.time_limit
// or during page load
// now + idle_period.during_page_load.min + layout.idle_period.time_limit
static const uint32_t kMaxTimerThreadBound = 5; // milliseconds
namespace mozilla {
NS_IMETHODIMP
MainThreadIdlePeriod::GetIdlePeriodHint(TimeStamp* aIdleDeadline) {
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(aIdleDeadline);
TimeStamp now = TimeStamp::Now();
TimeStamp currentGuess =
now + TimeDuration::FromMilliseconds(kLongIdlePeriodMS);
currentGuess = nsRefreshDriver::GetIdleDeadlineHint(currentGuess);
if (XRE_IsContentProcess()) {
currentGuess = gfx::VRManagerChild::GetIdleDeadlineHint(currentGuess);
}
currentGuess = NS_GetTimerDeadlineHintOnCurrentThread(currentGuess,
kMaxTimerThreadBound);
// If the idle period is too small, then just return a null time
// to indicate we are busy. Otherwise return the actual deadline.
TimeDuration minIdlePeriod =
TimeDuration::FromMilliseconds(StaticPrefs::idle_period_min());
bool busySoon = currentGuess.IsNull() ||
(now >= (currentGuess - minIdlePeriod)) ||
currentGuess < mLastIdleDeadline;
// During page load use higher minimum idle period.
if (!busySoon && XRE_IsContentProcess() &&
mozilla::dom::Document::HasRecentlyStartedForegroundLoads()) {
TimeDuration minIdlePeriod = TimeDuration::FromMilliseconds(
StaticPrefs::idle_period_during_page_load_min());
busySoon = (now >= (currentGuess - minIdlePeriod));
}
if (!busySoon) {
*aIdleDeadline = mLastIdleDeadline = currentGuess;
}
return NS_OK;
}
/* static */
float MainThreadIdlePeriod::GetLongIdlePeriod() { return kLongIdlePeriodMS; }
} // namespace mozilla