Android ANR-Keydispatch timeout

Code flow of ANR

Code flow of InputSystem

Android ANR-Keydispatch timeout_第1张图片

Code flow of dispatch input event

flow of Scenario

normal flow
Android ANR-Keydispatch timeout_第4张图片

// notifyKey() / notifyMotion()01-15 11:55:56.713   937  1127 D InputDispatcher: notifyM-evT=1156348,dev=1,src=0x1002, ac=0x0, downT=115634801-15 11:55:56.713   937  1127 D InputDispatcher: id[0]=0,tool=1,x=670,y=1246// dispatchKeyLocked() / dispatchMotionLocked() -> dispatchEventLocked()// dispatchEventLocked to every inputTarget01-15 11:55:56.713   937  1126 D InputDispatcher: DispatchM[0]42644ed8 NavigationBar (s),evT=1156348,curT=115635101-15 11:55:56.713   937  1126 D InputDispatcher: DispatchM[0]425a5d78 StatusBar (s),evT=1156348,curT=115635101-15 11:55:56.713   937  1126 D InputDispatcher: DispatchM[0]4354eee0 com.android.settings.Settings (s),evT=1156348,curT=115635101-15 11:55:56.713   937  1126 D InputDispatcher: DispatchM[0]WindowManager (s),evT=1156348,curT=1156351// finishDispatchCycleLocked() -> ... -> doDispatchCycleFinishedLockedInterruptible()01-15 11:55:56.713   937  1126 D InputDispatcher: FinishedM-evT=115634801-15 11:55:56.713   937  1126 D InputDispatcher: FinishedM-evT=115634801-15 11:55:56.713   937  1126 D InputDispatcher: FinishedM-evT=115634801-15 11:55:56.713   937  1126 D InputDispatcher: FinishedM-evT=1156348

No focused window
Android ANR-Keydispatch timeout_第5张图片

@ bugreportInput Dispatcher State at time of last ANR:  ANR:    Time: 2014-02-20 12:13:15    Window: AppWindowToken{4282ed50 token=Token{42755b28 ActivityRecord{42485160 u0 com.htc.camera/.CameraEntry t23}}}    DispatchLatency: 5022.9ms    WaitDuration: 5005.4ms    Reason: Waiting because no window has focus but there is a focused application that may eventually add a window when it finishes starting up.  DispatchEnabled: 1  DispatchFrozen: 0  FocusedApplication: name='AppWindowToken{4282ed50 token=Token{42755b28 ActivityRecord{42485160 u0 com.htc.camera/.CameraEntry t23}}}', dispatchingTimeout=5000.000ms  FocusedWindow: name=''...Windows:...PendingEvent:    KeyEvent(deviceId=-1, source=0x00000101, action=0, flags=0x00000048, keyCode=4, scanCode=0, metaState=0x00000000, repeatCount=0), policyFlags=0x4b000100, age=5025.8msInboundQueue: length=5    MotionEvent(deviceId=2, source=0x00001002, action=2, flags=0x00000000, metaState=0x00000000, buttonState=0x00000000, edgeFlags=0x00000000, xPrecision=1.5, yPrecision=1.5, displayId=0, pointers=[0: (1266.0, 569.5)]), policyFlags=0x42000000, age=5015.0ms...    KeyEvent(deviceId=-1, source=0x00000101, action=0, flags=0x000000c8, keyCode=4, scanCode=0, metaState=0x00000000, repeatCount=1), policyFlags=0x4b000100, age=4520.8ms

event not finished
Android ANR-Keydispatch timeout_第6张图片

// 1st touch: dispatch not finished (waitQueue can’t consume: 2*DispatchM but 1*FinishedM)02-14 17:29:59.664   969  1058 D InputDispatcher: notifyM-evT=67123340,dev=3,src=0x1002, ac=0x1, downT=6712310202-14 17:29:59.664   969  1058 D InputDispatcher: id[0]=0,tool=1,x=459,y=102302-14 17:29:59.664   969  1057 D InputDispatcher: DispatchM[1]4263bbf0 com.android.development.BadBehaviorActivity (s),evT=67123340,curT=6712334102-14 17:29:59.664   969  1057 D InputDispatcher: DispatchM[1]WindowManager (s),evT=67123340,curT=6712334102-14 17:29:59.664   969  1057 D InputDispatcher: FinishedM-evT=67123341//     - mPendingEvent = NULL// 2nd touch: 02-14 17:30:01.576   969  1058 D InputDispatcher: notifyM-evT=67125255,dev=3,src=0x1002, ac=0x0, downT=6712525502-14 17:30:01.576   969  1058 D InputDispatcher: id[0]=0,tool=1,x=433,y=104202-14 17:30:01.576   969  1057 D InputDispatcher: Waiting for application to become ready for input: Window{4263bbf0 u0 com.android.development/com.android.development.BadBehaviorActivity}.  Reason: Waiting because the touched window has not finished processing the input events that were previously delivered to it.// findFocusedWindowTargetsLocked() -> handleTargetsNotReadyLocked()//     - waitCause = INPUT_TARGET_WAIT_CAUSE_APPLICATION_NOT_READY;//     - waitTimeoutTime = 17:30:01.576 + {5sec}//     - Looper’s nextWakeupTime = 17:30:01.576 + {5sec}//     - mPendingEvent = 2nd touch// after 5sec, Looper wakeup// dispatchOnceInnerLocked() -> handleTargetsNotReadyLocked() -> onANRLocked()02-14 17:30:06.581   969  1057 I InputDispatcher: Application is not responding: Window{4263bbf0 u0 com.android.development/com.android.development.BadBehaviorActivity}.  It has been 5005.5ms since event, 5005.1ms since wait started.  Reason: Waiting because the touched window has not finished processing the input events that were previously delivered to it.

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