Report ANR when waited for longer than the timeout am: e4623041f9 am: 975f545d18 (a9be30f1) · Commits · e / os / android_frameworks_native

include/input/Input.h

+4 −0

Original line number	Diff line number	Diff line
		@@ -462,6 +462,8 @@ public:
		nsecs_t eventTime);
		void initialize(const KeyEvent& from);

		static const char* actionToString(int32_t action);

		protected:
		int32_t mAction;
		int32_t mFlags;
		@@ -725,6 +727,8 @@ public:
		static const char* getLabel(int32_t axis);
		static int32_t getAxisFromLabel(const char* label);

		static const char* actionToString(int32_t action);

		protected:
		int32_t mAction;
		int32_t mActionButton;

libs/input/Input.cpp

+31 −0

Original line number	Diff line number	Diff line
		@@ -169,6 +169,18 @@ void KeyEvent::initialize(const KeyEvent& from) {
		mEventTime = from.mEventTime;
		}

		const char* KeyEvent::actionToString(int32_t action) {
		// Convert KeyEvent action to string
		switch (action) {
		case AKEY_EVENT_ACTION_DOWN:
		return "DOWN";
		case AKEY_EVENT_ACTION_UP:
		return "UP";
		case AKEY_EVENT_ACTION_MULTIPLE:
		return "MULTIPLE";
		}
		return "UNKNOWN";
		}

		// --- PointerCoords ---

		@@ -678,6 +690,25 @@ int32_t MotionEvent::getAxisFromLabel(const char* label) {
		return getAxisByLabel(label);
		}

		const char* MotionEvent::actionToString(int32_t action) {
		// Convert MotionEvent action to string
		switch (action & AMOTION_EVENT_ACTION_MASK) {
		case AMOTION_EVENT_ACTION_DOWN:
		return "DOWN";
		case AMOTION_EVENT_ACTION_MOVE:
		return "MOVE";
		case AMOTION_EVENT_ACTION_UP:
		return "UP";
		case AMOTION_EVENT_ACTION_CANCEL:
		return "CANCEL";
		case AMOTION_EVENT_ACTION_POINTER_DOWN:
		return "POINTER_DOWN";
		case AMOTION_EVENT_ACTION_POINTER_UP:
		return "POINTER_UP";
		}
		return "UNKNOWN";
		}

		// --- FocusEvent ---

		void FocusEvent::initialize(int32_t id, bool hasFocus, bool inTouchMode) {

services/inputflinger/dispatcher/Android.bp

+1 −0

Original line number	Diff line number	Diff line
		@@ -22,6 +22,7 @@ cc_library_headers {
		filegroup {
		name: "libinputdispatcher_sources",
		srcs: [
		"AnrTracker.cpp",
		"Connection.cpp",
		"Entry.cpp",
		"InjectionState.cpp",

services/inputflinger/dispatcher/AnrTracker.cpp

0 → 100644

+73 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2020 The Android Open Source Project
		*
		* Licensed under the Apache License, Version 2.0 (the "License");
		* you may not use this file except in compliance with the License.
		* You may obtain a copy of the License at
		*
		* http://www.apache.org/licenses/LICENSE-2.0
		*
		* Unless required by applicable law or agreed to in writing, software
		* distributed under the License is distributed on an "AS IS" BASIS,
		* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
		* See the License for the specific language governing permissions and
		* limitations under the License.
		*/

		#include "AnrTracker.h"

		namespace android::inputdispatcher {

		template <typename T>
		static T max(const T& a, const T& b) {
		return a < b ? b : a;
		}

		void AnrTracker::insert(nsecs_t timeoutTime, sp<IBinder> token) {
		mAnrTimeouts.insert(std::make_pair(timeoutTime, std::move(token)));
		}

		/**
		* Erase a single entry only. If there are multiple duplicate entries
		* (same time, same connection), then only remove one of them.
		*/
		void AnrTracker::erase(nsecs_t timeoutTime, const sp<IBinder>& token) {
		auto pair = std::make_pair(timeoutTime, token);
		auto it = mAnrTimeouts.find(pair);
		if (it != mAnrTimeouts.end()) {
		mAnrTimeouts.erase(it);
		}
		}

		void AnrTracker::eraseToken(const sp<IBinder>& token) {
		for (auto it = mAnrTimeouts.begin(); it != mAnrTimeouts.end();) {
		if (it->second == token) {
		it = mAnrTimeouts.erase(it);
		} else {
		++it;
		}
		}
		}

		bool AnrTracker::empty() const {
		return mAnrTimeouts.empty();
		}

		// If empty() is false, return the time at which the next connection should cause an ANR
		// If empty() is true, return LONG_LONG_MAX
		nsecs_t AnrTracker::firstTimeout() const {
		if (mAnrTimeouts.empty()) {
		return std::numeric_limits<nsecs_t>::max();
		}
		return mAnrTimeouts.begin()->first;
		}

		const sp<IBinder>& AnrTracker::firstToken() const {
		return mAnrTimeouts.begin()->second;
		}

		void AnrTracker::clear() {
		mAnrTimeouts.clear();
		}

		} // namespace android::inputdispatcher

services/inputflinger/dispatcher/AnrTracker.h

0 → 100644

+60 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2020 The Android Open Source Project
		*
		* Licensed under the Apache License, Version 2.0 (the "License");
		* you may not use this file except in compliance with the License.
		* You may obtain a copy of the License at
		*
		* http://www.apache.org/licenses/LICENSE-2.0
		*
		* Unless required by applicable law or agreed to in writing, software
		* distributed under the License is distributed on an "AS IS" BASIS,
		* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
		* See the License for the specific language governing permissions and
		* limitations under the License.
		*/

		#ifndef _UI_INPUT_INPUTDISPATCHER_ANRTRACKER_H
		#define _UI_INPUT_INPUTDISPATCHER_ANRTRACKER_H

		#include <binder/IBinder.h>
		#include <utils/Timers.h>
		#include <set>

		namespace android::inputdispatcher {

		/**
		* Keeps track of the times when each connection is going to ANR.
		* Provides the ability to quickly find the connection that is going to cause ANR next.
		*/
		class AnrTracker {
		public:
		void insert(nsecs_t timeoutTime, sp<IBinder> token);
		void erase(nsecs_t timeoutTime, const sp<IBinder>& token);
		void eraseToken(const sp<IBinder>& token);
		void clear();

		bool empty() const;
		// If empty() is false, return the time at which the next connection should cause an ANR
		// If empty() is true, return LONG_LONG_MAX
		nsecs_t firstTimeout() const;
		// Return the token of the next connection that should cause an ANR.
		// Do not call this unless empty() is false, you will encounter undefined behaviour.
		const sp<IBinder>& firstToken() const;

		private:
		// Optimization: use a multiset to keep track of the event timeouts. When an event is sent
		// to the InputConsumer, we add an entry to this structure. We look at the smallest value to
		// determine if any of the connections is unresponsive, and to determine when we should wake
		// next for the future ANR check.
		// Using a multiset helps quickly look up the next timeout due.
		//
		// We must use a multi-set, because it is plausible (although highly unlikely) to have entries
		// from the same connection and same timestamp, but different sequence numbers.
		// We are not tracking sequence numbers, and just allow duplicates to exist.
		std::multiset<std::pair<nsecs_t /timeoutTime/, sp<IBinder> /connectionToken/>> mAnrTimeouts;
		};

		} // namespace android::inputdispatcher

		#endif // _UI_INPUT_INPUTDISPATCHER_ANRTRACKER_H