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86 lines
2.7 KiB
C++
86 lines
2.7 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "InputTaskManager.h"
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namespace mozilla {
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StaticRefPtr<InputTaskManager> InputTaskManager::gInputTaskManager;
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void InputTaskManager::EnableInputEventPrioritization() {
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MOZ_ASSERT(NS_IsMainThread());
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MOZ_ASSERT(mInputQueueState == STATE_DISABLED);
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mInputQueueState = STATE_ENABLED;
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mInputHandlingStartTime = TimeStamp();
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}
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void InputTaskManager::FlushInputEventPrioritization() {
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MOZ_ASSERT(NS_IsMainThread());
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MOZ_ASSERT(mInputQueueState == STATE_ENABLED ||
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mInputQueueState == STATE_SUSPEND);
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mInputQueueState =
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mInputQueueState == STATE_ENABLED ? STATE_FLUSHING : STATE_SUSPEND;
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}
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void InputTaskManager::SuspendInputEventPrioritization() {
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MOZ_ASSERT(NS_IsMainThread());
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MOZ_ASSERT(mInputQueueState == STATE_ENABLED ||
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mInputQueueState == STATE_FLUSHING);
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mInputQueueState = STATE_SUSPEND;
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}
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void InputTaskManager::ResumeInputEventPrioritization() {
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MOZ_ASSERT(NS_IsMainThread());
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MOZ_ASSERT(mInputQueueState == STATE_SUSPEND);
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mInputQueueState = STATE_ENABLED;
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}
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int32_t InputTaskManager::GetPriorityModifierForEventLoopTurn(
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const MutexAutoLock& aProofOfLock) {
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size_t inputCount = PendingTaskCount();
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if (State() == STATE_ENABLED && InputHandlingStartTime().IsNull() &&
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inputCount > 0) {
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SetInputHandlingStartTime(
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InputEventStatistics::Get().GetInputHandlingStartTime(inputCount));
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}
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if (inputCount > 0 && (State() == InputTaskManager::STATE_FLUSHING ||
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(State() == InputTaskManager::STATE_ENABLED &&
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!InputHandlingStartTime().IsNull() &&
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TimeStamp::Now() > InputHandlingStartTime()))) {
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return 0;
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}
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int32_t modifier = static_cast<int32_t>(EventQueuePriority::InputLow) -
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static_cast<int32_t>(EventQueuePriority::MediumHigh);
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return modifier;
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}
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void InputTaskManager::WillRunTask() {
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TaskManager::WillRunTask();
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mStartTimes.AppendElement(TimeStamp::Now());
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}
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void InputTaskManager::DidRunTask() {
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TaskManager::DidRunTask();
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MOZ_ASSERT(!mStartTimes.IsEmpty());
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TimeStamp start = mStartTimes.PopLastElement();
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InputEventStatistics::Get().UpdateInputDuration(TimeStamp::Now() - start);
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}
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// static
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InputTaskManager* InputTaskManager::Get() {
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MOZ_ASSERT(NS_IsMainThread());
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if (gInputTaskManager) {
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return gInputTaskManager.get();
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}
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gInputTaskManager = new InputTaskManager();
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return gInputTaskManager.get();
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}
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} // namespace mozilla
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