Add m-esr52 at 52.6.0

1 files changed, 4430 insertions, 0 deletions

diff --git a/widget/gonk/libui/InputDispatcher.cpp b/widget/gonk/libui/InputDispatcher.cpp
new file mode 100644
index 000000000..7adaa1998
--- /dev/null
+++ b/widget/gonk/libui/InputDispatcher.cpp
@@ -0,0 +1,4430 @@
+/*
+ * Copyright (C) 2010 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.
+ */
+
+#define LOG_TAG "InputDispatcher"
+#define ATRACE_TAG ATRACE_TAG_INPUT
+
+//#define LOG_NDEBUG 0
+#include "cutils_log.h"
+
+// Log detailed debug messages about each inbound event notification to the dispatcher.
+#define DEBUG_INBOUND_EVENT_DETAILS 0
+
+// Log detailed debug messages about each outbound event processed by the dispatcher.
+#define DEBUG_OUTBOUND_EVENT_DETAILS 0
+
+// Log debug messages about the dispatch cycle.
+#define DEBUG_DISPATCH_CYCLE 0
+
+// Log debug messages about registrations.
+#define DEBUG_REGISTRATION 0
+
+// Log debug messages about input event injection.
+#define DEBUG_INJECTION 0
+
+// Log debug messages about input focus tracking.
+#define DEBUG_FOCUS 0
+
+// Log debug messages about the app switch latency optimization.
+#define DEBUG_APP_SWITCH 0
+
+// Log debug messages about hover events.
+#define DEBUG_HOVER 0
+
+#include "InputDispatcher.h"
+
+#include "Trace.h"
+#include "PowerManager.h"
+
+#include <stddef.h>
+#include <unistd.h>
+#include <errno.h>
+#include <limits.h>
+#include <time.h>
+
+#define INDENT "  "
+#define INDENT2 "    "
+#define INDENT3 "      "
+#define INDENT4 "        "
+
+namespace android {
+
+// Default input dispatching timeout if there is no focused application or paused window
+// from which to determine an appropriate dispatching timeout.
+const nsecs_t DEFAULT_INPUT_DISPATCHING_TIMEOUT = 5000 * 1000000LL; // 5 sec
+
+// Amount of time to allow for all pending events to be processed when an app switch
+// key is on the way.  This is used to preempt input dispatch and drop input events
+// when an application takes too long to respond and the user has pressed an app switch key.
+const nsecs_t APP_SWITCH_TIMEOUT = 500 * 1000000LL; // 0.5sec
+
+// Amount of time to allow for an event to be dispatched (measured since its eventTime)
+// before considering it stale and dropping it.
+const nsecs_t STALE_EVENT_TIMEOUT = 10000 * 1000000LL; // 10sec
+
+// Amount of time to allow touch events to be streamed out to a connection before requiring
+// that the first event be finished.  This value extends the ANR timeout by the specified
+// amount.  For example, if streaming is allowed to get ahead by one second relative to the
+// queue of waiting unfinished events, then ANRs will similarly be delayed by one second.
+const nsecs_t STREAM_AHEAD_EVENT_TIMEOUT = 500 * 1000000LL; // 0.5sec
+
+// Log a warning when an event takes longer than this to process, even if an ANR does not occur.
+const nsecs_t SLOW_EVENT_PROCESSING_WARNING_TIMEOUT = 2000 * 1000000LL; // 2sec
+
+
+static inline nsecs_t now() {
+    return systemTime(SYSTEM_TIME_MONOTONIC);
+}
+
+static inline const char* toString(bool value) {
+    return value ? "true" : "false";
+}
+
+static inline int32_t getMotionEventActionPointerIndex(int32_t action) {
+    return (action & AMOTION_EVENT_ACTION_POINTER_INDEX_MASK)
+            >> AMOTION_EVENT_ACTION_POINTER_INDEX_SHIFT;
+}
+
+static bool isValidKeyAction(int32_t action) {
+    switch (action) {
+    case AKEY_EVENT_ACTION_DOWN:
+    case AKEY_EVENT_ACTION_UP:
+        return true;
+    default:
+        return false;
+    }
+}
+
+static bool validateKeyEvent(int32_t action) {
+    if (! isValidKeyAction(action)) {
+        ALOGE("Key event has invalid action code 0x%x", action);
+        return false;
+    }
+    return true;
+}
+
+static bool isValidMotionAction(int32_t action, size_t pointerCount) {
+    switch (action & AMOTION_EVENT_ACTION_MASK) {
+    case AMOTION_EVENT_ACTION_DOWN:
+    case AMOTION_EVENT_ACTION_UP:
+    case AMOTION_EVENT_ACTION_CANCEL:
+    case AMOTION_EVENT_ACTION_MOVE:
+    case AMOTION_EVENT_ACTION_OUTSIDE:
+    case AMOTION_EVENT_ACTION_HOVER_ENTER:
+    case AMOTION_EVENT_ACTION_HOVER_MOVE:
+    case AMOTION_EVENT_ACTION_HOVER_EXIT:
+    case AMOTION_EVENT_ACTION_SCROLL:
+        return true;
+    case AMOTION_EVENT_ACTION_POINTER_DOWN:
+    case AMOTION_EVENT_ACTION_POINTER_UP: {
+        int32_t index = getMotionEventActionPointerIndex(action);
+        return index >= 0 && size_t(index) < pointerCount;
+    }
+    default:
+        return false;
+    }
+}
+
+static bool validateMotionEvent(int32_t action, size_t pointerCount,
+        const PointerProperties* pointerProperties) {
+    if (! isValidMotionAction(action, pointerCount)) {
+        ALOGE("Motion event has invalid action code 0x%x", action);
+        return false;
+    }
+    if (pointerCount < 1 || pointerCount > MAX_POINTERS) {
+        ALOGE("Motion event has invalid pointer count %d; value must be between 1 and %d.",
+                pointerCount, MAX_POINTERS);
+        return false;
+    }
+    BitSet32 pointerIdBits;
+    for (size_t i = 0; i < pointerCount; i++) {
+        int32_t id = pointerProperties[i].id;
+        if (id < 0 || id > MAX_POINTER_ID) {
+            ALOGE("Motion event has invalid pointer id %d; value must be between 0 and %d",
+                    id, MAX_POINTER_ID);
+            return false;
+        }
+        if (pointerIdBits.hasBit(id)) {
+            ALOGE("Motion event has duplicate pointer id %d", id);
+            return false;
+        }
+        pointerIdBits.markBit(id);
+    }
+    return true;
+}
+
+static bool isMainDisplay(int32_t displayId) {
+    return displayId == ADISPLAY_ID_DEFAULT || displayId == ADISPLAY_ID_NONE;
+}
+
+static void dumpRegion(String8& dump, const SkRegion& region) {
+    if (region.isEmpty()) {
+        dump.append("<empty>");
+        return;
+    }
+
+    bool first = true;
+    for (SkRegion::Iterator it(region); !it.done(); it.next()) {
+        if (first) {
+            first = false;
+        } else {
+            dump.append("|");
+        }
+        const SkIRect& rect = it.rect();
+        dump.appendFormat("[%d,%d][%d,%d]", rect.fLeft, rect.fTop, rect.fRight, rect.fBottom);
+    }
+}
+
+
+// --- InputDispatcher ---
+
+InputDispatcher::InputDispatcher(const sp<InputDispatcherPolicyInterface>& policy) :
+    mPolicy(policy),
+    mPendingEvent(NULL), mAppSwitchSawKeyDown(false), mAppSwitchDueTime(LONG_LONG_MAX),
+    mNextUnblockedEvent(NULL),
+    mDispatchEnabled(false), mDispatchFrozen(false), mInputFilterEnabled(false),
+    mInputTargetWaitCause(INPUT_TARGET_WAIT_CAUSE_NONE) {
+    mLooper = new Looper(false);
+
+    mKeyRepeatState.lastKeyEntry = NULL;
+
+    policy->getDispatcherConfiguration(&mConfig);
+}
+
+InputDispatcher::~InputDispatcher() {
+    { // acquire lock
+        AutoMutex _l(mLock);
+
+        resetKeyRepeatLocked();
+        releasePendingEventLocked();
+        drainInboundQueueLocked();
+    }
+
+    while (mConnectionsByFd.size() != 0) {
+        unregisterInputChannel(mConnectionsByFd.valueAt(0)->inputChannel);
+    }
+}
+
+void InputDispatcher::dispatchOnce() {
+    nsecs_t nextWakeupTime = LONG_LONG_MAX;
+    { // acquire lock
+        AutoMutex _l(mLock);
+        mDispatcherIsAliveCondition.broadcast();
+
+        // Run a dispatch loop if there are no pending commands.
+        // The dispatch loop might enqueue commands to run afterwards.
+        if (!haveCommandsLocked()) {
+            dispatchOnceInnerLocked(&nextWakeupTime);
+        }
+
+        // Run all pending commands if there are any.
+        // If any commands were run then force the next poll to wake up immediately.
+        if (runCommandsLockedInterruptible()) {
+            nextWakeupTime = LONG_LONG_MIN;
+        }
+    } // release lock
+
+    // Wait for callback or timeout or wake.  (make sure we round up, not down)
+    nsecs_t currentTime = now();
+    int timeoutMillis = toMillisecondTimeoutDelay(currentTime, nextWakeupTime);
+    mLooper->pollOnce(timeoutMillis);
+}
+
+void InputDispatcher::dispatchOnceInnerLocked(nsecs_t* nextWakeupTime) {
+    nsecs_t currentTime = now();
+
+    // Reset the key repeat timer whenever we disallow key events, even if the next event
+    // is not a key.  This is to ensure that we abort a key repeat if the device is just coming
+    // out of sleep.
+    if (!mPolicy->isKeyRepeatEnabled()) {
+        resetKeyRepeatLocked();
+    }
+
+    // If dispatching is frozen, do not process timeouts or try to deliver any new events.
+    if (mDispatchFrozen) {
+#if DEBUG_FOCUS
+        ALOGD("Dispatch frozen.  Waiting some more.");
+#endif
+        return;
+    }
+
+    // Optimize latency of app switches.
+    // Essentially we start a short timeout when an app switch key (HOME / ENDCALL) has
+    // been pressed.  When it expires, we preempt dispatch and drop all other pending events.
+    bool isAppSwitchDue = mAppSwitchDueTime <= currentTime;
+    if (mAppSwitchDueTime < *nextWakeupTime) {
+        *nextWakeupTime = mAppSwitchDueTime;
+    }
+
+    // Ready to start a new event.
+    // If we don't already have a pending event, go grab one.
+    if (! mPendingEvent) {
+        if (mInboundQueue.isEmpty()) {
+            if (isAppSwitchDue) {
+                // The inbound queue is empty so the app switch key we were waiting
+                // for will never arrive.  Stop waiting for it.
+                resetPendingAppSwitchLocked(false);
+                isAppSwitchDue = false;
+            }
+
+            // Synthesize a key repeat if appropriate.
+            if (mKeyRepeatState.lastKeyEntry) {
+                if (currentTime >= mKeyRepeatState.nextRepeatTime) {
+                    mPendingEvent = synthesizeKeyRepeatLocked(currentTime);
+                } else {
+                    if (mKeyRepeatState.nextRepeatTime < *nextWakeupTime) {
+                        *nextWakeupTime = mKeyRepeatState.nextRepeatTime;
+                    }
+                }
+            }
+
+            // Nothing to do if there is no pending event.
+            if (!mPendingEvent) {
+                return;
+            }
+        } else {
+            // Inbound queue has at least one entry.
+            mPendingEvent = mInboundQueue.dequeueAtHead();
+            traceInboundQueueLengthLocked();
+        }
+
+        // Poke user activity for this event.
+        if (mPendingEvent->policyFlags & POLICY_FLAG_PASS_TO_USER) {
+            pokeUserActivityLocked(mPendingEvent);
+        }
+
+        // Get ready to dispatch the event.
+        resetANRTimeoutsLocked();
+    }
+
+    // Now we have an event to dispatch.
+    // All events are eventually dequeued and processed this way, even if we intend to drop them.
+    ALOG_ASSERT(mPendingEvent != NULL);
+    bool done = false;
+    DropReason dropReason = DROP_REASON_NOT_DROPPED;
+    if (!(mPendingEvent->policyFlags & POLICY_FLAG_PASS_TO_USER)) {
+        dropReason = DROP_REASON_POLICY;
+    } else if (!mDispatchEnabled) {
+        dropReason = DROP_REASON_DISABLED;
+    }
+
+    if (mNextUnblockedEvent == mPendingEvent) {
+        mNextUnblockedEvent = NULL;
+    }
+
+    switch (mPendingEvent->type) {
+    case EventEntry::TYPE_CONFIGURATION_CHANGED: {
+        ConfigurationChangedEntry* typedEntry =
+                static_cast<ConfigurationChangedEntry*>(mPendingEvent);
+        done = dispatchConfigurationChangedLocked(currentTime, typedEntry);
+        dropReason = DROP_REASON_NOT_DROPPED; // configuration changes are never dropped
+        break;
+    }
+
+    case EventEntry::TYPE_DEVICE_RESET: {
+        DeviceResetEntry* typedEntry =
+                static_cast<DeviceResetEntry*>(mPendingEvent);
+        done = dispatchDeviceResetLocked(currentTime, typedEntry);
+        dropReason = DROP_REASON_NOT_DROPPED; // device resets are never dropped
+        break;
+    }
+
+    case EventEntry::TYPE_KEY: {
+        KeyEntry* typedEntry = static_cast<KeyEntry*>(mPendingEvent);
+        if (isAppSwitchDue) {
+            if (isAppSwitchKeyEventLocked(typedEntry)) {
+                resetPendingAppSwitchLocked(true);
+                isAppSwitchDue = false;
+            } else if (dropReason == DROP_REASON_NOT_DROPPED) {
+                dropReason = DROP_REASON_APP_SWITCH;
+            }
+        }
+        if (dropReason == DROP_REASON_NOT_DROPPED
+                && isStaleEventLocked(currentTime, typedEntry)) {
+            dropReason = DROP_REASON_STALE;
+        }
+        if (dropReason == DROP_REASON_NOT_DROPPED && mNextUnblockedEvent) {
+            dropReason = DROP_REASON_BLOCKED;
+        }
+        done = dispatchKeyLocked(currentTime, typedEntry, &dropReason, nextWakeupTime);
+        break;
+    }
+
+    case EventEntry::TYPE_MOTION: {
+        MotionEntry* typedEntry = static_cast<MotionEntry*>(mPendingEvent);
+        if (dropReason == DROP_REASON_NOT_DROPPED && isAppSwitchDue) {
+            dropReason = DROP_REASON_APP_SWITCH;
+        }
+        if (dropReason == DROP_REASON_NOT_DROPPED
+                && isStaleEventLocked(currentTime, typedEntry)) {
+            dropReason = DROP_REASON_STALE;
+        }
+        if (dropReason == DROP_REASON_NOT_DROPPED && mNextUnblockedEvent) {
+            dropReason = DROP_REASON_BLOCKED;
+        }
+        done = dispatchMotionLocked(currentTime, typedEntry,
+                &dropReason, nextWakeupTime);
+        break;
+    }
+
+    default:
+        ALOG_ASSERT(false);
+        break;
+    }
+
+    if (done) {
+        if (dropReason != DROP_REASON_NOT_DROPPED) {
+            dropInboundEventLocked(mPendingEvent, dropReason);
+        }
+
+        releasePendingEventLocked();
+        *nextWakeupTime = LONG_LONG_MIN;  // force next poll to wake up immediately
+    }
+}
+
+bool InputDispatcher::enqueueInboundEventLocked(EventEntry* entry) {
+    bool needWake = mInboundQueue.isEmpty();
+    mInboundQueue.enqueueAtTail(entry);
+    traceInboundQueueLengthLocked();
+
+    switch (entry->type) {
+    case EventEntry::TYPE_KEY: {
+        // Optimize app switch latency.
+        // If the application takes too long to catch up then we drop all events preceding
+        // the app switch key.
+        KeyEntry* keyEntry = static_cast<KeyEntry*>(entry);
+        if (isAppSwitchKeyEventLocked(keyEntry)) {
+            if (keyEntry->action == AKEY_EVENT_ACTION_DOWN) {
+                mAppSwitchSawKeyDown = true;
+            } else if (keyEntry->action == AKEY_EVENT_ACTION_UP) {
+                if (mAppSwitchSawKeyDown) {
+#if DEBUG_APP_SWITCH
+                    ALOGD("App switch is pending!");
+#endif
+                    mAppSwitchDueTime = keyEntry->eventTime + APP_SWITCH_TIMEOUT;
+                    mAppSwitchSawKeyDown = false;
+                    needWake = true;
+                }
+            }
+        }
+        break;
+    }
+
+    case EventEntry::TYPE_MOTION: {
+        // Optimize case where the current application is unresponsive and the user
+        // decides to touch a window in a different application.
+        // If the application takes too long to catch up then we drop all events preceding
+        // the touch into the other window.
+        MotionEntry* motionEntry = static_cast<MotionEntry*>(entry);
+        if (motionEntry->action == AMOTION_EVENT_ACTION_DOWN
+                && (motionEntry->source & AINPUT_SOURCE_CLASS_POINTER)
+                && mInputTargetWaitCause == INPUT_TARGET_WAIT_CAUSE_APPLICATION_NOT_READY
+                && mInputTargetWaitApplicationHandle != NULL) {
+            int32_t displayId = motionEntry->displayId;
+            int32_t x = int32_t(motionEntry->pointerCoords[0].
+                    getAxisValue(AMOTION_EVENT_AXIS_X));
+            int32_t y = int32_t(motionEntry->pointerCoords[0].
+                    getAxisValue(AMOTION_EVENT_AXIS_Y));
+            sp<InputWindowHandle> touchedWindowHandle = findTouchedWindowAtLocked(displayId, x, y);
+            if (touchedWindowHandle != NULL
+                    && touchedWindowHandle->inputApplicationHandle
+                            != mInputTargetWaitApplicationHandle) {
+                // User touched a different application than the one we are waiting on.
+                // Flag the event, and start pruning the input queue.
+                mNextUnblockedEvent = motionEntry;
+                needWake = true;
+            }
+        }
+        break;
+    }
+    }
+
+    return needWake;
+}
+
+sp<InputWindowHandle> InputDispatcher::findTouchedWindowAtLocked(int32_t displayId,
+        int32_t x, int32_t y) {
+    // Traverse windows from front to back to find touched window.
+    size_t numWindows = mWindowHandles.size();
+    for (size_t i = 0; i < numWindows; i++) {
+        sp<InputWindowHandle> windowHandle = mWindowHandles.itemAt(i);
+        const InputWindowInfo* windowInfo = windowHandle->getInfo();
+        if (windowInfo->displayId == displayId) {
+            int32_t flags = windowInfo->layoutParamsFlags;
+
+            if (windowInfo->visible) {
+                if (!(flags & InputWindowInfo::FLAG_NOT_TOUCHABLE)) {
+                    bool isTouchModal = (flags & (InputWindowInfo::FLAG_NOT_FOCUSABLE
+                            | InputWindowInfo::FLAG_NOT_TOUCH_MODAL)) == 0;
+                    if (isTouchModal || windowInfo->touchableRegionContainsPoint(x, y)) {
+                        // Found window.
+                        return windowHandle;
+                    }
+                }
+            }
+
+            if (flags & InputWindowInfo::FLAG_SYSTEM_ERROR) {
+                // Error window is on top but not visible, so touch is dropped.
+                return NULL;
+            }
+        }
+    }
+    return NULL;
+}
+
+void InputDispatcher::dropInboundEventLocked(EventEntry* entry, DropReason dropReason) {
+    const char* reason;
+    switch (dropReason) {
+    case DROP_REASON_POLICY:
+#if DEBUG_INBOUND_EVENT_DETAILS
+        ALOGD("Dropped event because policy consumed it.");
+#endif
+        reason = "inbound event was dropped because the policy consumed it";
+        break;
+    case DROP_REASON_DISABLED:
+        ALOGI("Dropped event because input dispatch is disabled.");
+        reason = "inbound event was dropped because input dispatch is disabled";
+        break;
+    case DROP_REASON_APP_SWITCH:
+        ALOGI("Dropped event because of pending overdue app switch.");
+        reason = "inbound event was dropped because of pending overdue app switch";
+        break;
+    case DROP_REASON_BLOCKED:
+        ALOGI("Dropped event because the current application is not responding and the user "
+                "has started interacting with a different application.");
+        reason = "inbound event was dropped because the current application is not responding "
+                "and the user has started interacting with a different application";
+        break;
+    case DROP_REASON_STALE:
+        ALOGI("Dropped event because it is stale.");
+        reason = "inbound event was dropped because it is stale";
+        break;
+    default:
+        ALOG_ASSERT(false);
+        return;
+    }
+
+    switch (entry->type) {
+    case EventEntry::TYPE_KEY: {
+        CancelationOptions options(CancelationOptions::CANCEL_NON_POINTER_EVENTS, reason);
+        synthesizeCancelationEventsForAllConnectionsLocked(options);
+        break;
+    }
+    case EventEntry::TYPE_MOTION: {
+        MotionEntry* motionEntry = static_cast<MotionEntry*>(entry);
+        if (motionEntry->source & AINPUT_SOURCE_CLASS_POINTER) {
+            CancelationOptions options(CancelationOptions::CANCEL_POINTER_EVENTS, reason);
+            synthesizeCancelationEventsForAllConnectionsLocked(options);
+        } else {
+            CancelationOptions options(CancelationOptions::CANCEL_NON_POINTER_EVENTS, reason);
+            synthesizeCancelationEventsForAllConnectionsLocked(options);
+        }
+        break;
+    }
+    }
+}
+
+bool InputDispatcher::isAppSwitchKeyCode(int32_t keyCode) {
+    return keyCode == AKEYCODE_HOME
+            || keyCode == AKEYCODE_ENDCALL
+            || keyCode == AKEYCODE_APP_SWITCH;
+}
+
+bool InputDispatcher::isAppSwitchKeyEventLocked(KeyEntry* keyEntry) {
+    return ! (keyEntry->flags & AKEY_EVENT_FLAG_CANCELED)
+            && isAppSwitchKeyCode(keyEntry->keyCode)
+            && (keyEntry->policyFlags & POLICY_FLAG_TRUSTED)
+            && (keyEntry->policyFlags & POLICY_FLAG_PASS_TO_USER);
+}
+
+bool InputDispatcher::isAppSwitchPendingLocked() {
+    return mAppSwitchDueTime != LONG_LONG_MAX;
+}
+
+void InputDispatcher::resetPendingAppSwitchLocked(bool handled) {
+    mAppSwitchDueTime = LONG_LONG_MAX;
+
+#if DEBUG_APP_SWITCH
+    if (handled) {
+        ALOGD("App switch has arrived.");
+    } else {
+        ALOGD("App switch was abandoned.");
+    }
+#endif
+}
+
+bool InputDispatcher::isStaleEventLocked(nsecs_t currentTime, EventEntry* entry) {
+    return currentTime - entry->eventTime >= STALE_EVENT_TIMEOUT;
+}
+
+bool InputDispatcher::haveCommandsLocked() const {
+    return !mCommandQueue.isEmpty();
+}
+
+bool InputDispatcher::runCommandsLockedInterruptible() {
+    if (mCommandQueue.isEmpty()) {
+        return false;
+    }
+
+    do {
+        CommandEntry* commandEntry = mCommandQueue.dequeueAtHead();
+
+        Command command = commandEntry->command;
+        (this->*command)(commandEntry); // commands are implicitly 'LockedInterruptible'
+
+        commandEntry->connection.clear();
+        delete commandEntry;
+    } while (! mCommandQueue.isEmpty());
+    return true;
+}
+
+InputDispatcher::CommandEntry* InputDispatcher::postCommandLocked(Command command) {
+    CommandEntry* commandEntry = new CommandEntry(command);
+    mCommandQueue.enqueueAtTail(commandEntry);
+    return commandEntry;
+}
+
+void InputDispatcher::drainInboundQueueLocked() {
+    while (! mInboundQueue.isEmpty()) {
+        EventEntry* entry = mInboundQueue.dequeueAtHead();
+        releaseInboundEventLocked(entry);
+    }
+    traceInboundQueueLengthLocked();
+}
+
+void InputDispatcher::releasePendingEventLocked() {
+    if (mPendingEvent) {
+        resetANRTimeoutsLocked();
+        releaseInboundEventLocked(mPendingEvent);
+        mPendingEvent = NULL;
+    }
+}
+
+void InputDispatcher::releaseInboundEventLocked(EventEntry* entry) {
+    InjectionState* injectionState = entry->injectionState;
+    if (injectionState && injectionState->injectionResult == INPUT_EVENT_INJECTION_PENDING) {
+#if DEBUG_DISPATCH_CYCLE
+        ALOGD("Injected inbound event was dropped.");
+#endif
+        setInjectionResultLocked(entry, INPUT_EVENT_INJECTION_FAILED);
+    }
+    if (entry == mNextUnblockedEvent) {
+        mNextUnblockedEvent = NULL;
+    }
+    entry->release();
+}
+
+void InputDispatcher::resetKeyRepeatLocked() {
+    if (mKeyRepeatState.lastKeyEntry) {
+        mKeyRepeatState.lastKeyEntry->release();
+        mKeyRepeatState.lastKeyEntry = NULL;
+    }
+}
+
+InputDispatcher::KeyEntry* InputDispatcher::synthesizeKeyRepeatLocked(nsecs_t currentTime) {
+    KeyEntry* entry = mKeyRepeatState.lastKeyEntry;
+
+    // Reuse the repeated key entry if it is otherwise unreferenced.
+    uint32_t policyFlags = (entry->policyFlags & POLICY_FLAG_RAW_MASK)
+            | POLICY_FLAG_PASS_TO_USER | POLICY_FLAG_TRUSTED;
+    if (entry->refCount == 1) {
+        entry->recycle();
+        entry->eventTime = currentTime;
+        entry->policyFlags = policyFlags;
+        entry->repeatCount += 1;
+    } else {
+        KeyEntry* newEntry = new KeyEntry(currentTime,
+                entry->deviceId, entry->source, policyFlags,
+                entry->action, entry->flags, entry->keyCode, entry->scanCode,
+                entry->metaState, entry->repeatCount + 1, entry->downTime);
+
+        mKeyRepeatState.lastKeyEntry = newEntry;
+        entry->release();
+
+        entry = newEntry;
+    }
+    entry->syntheticRepeat = true;
+
+    // Increment reference count since we keep a reference to the event in
+    // mKeyRepeatState.lastKeyEntry in addition to the one we return.
+    entry->refCount += 1;
+
+    mKeyRepeatState.nextRepeatTime = currentTime + mConfig.keyRepeatDelay;
+    return entry;
+}
+
+bool InputDispatcher::dispatchConfigurationChangedLocked(
+        nsecs_t currentTime, ConfigurationChangedEntry* entry) {
+#if DEBUG_OUTBOUND_EVENT_DETAILS
+    ALOGD("dispatchConfigurationChanged - eventTime=%lld", entry->eventTime);
+#endif
+
+    // Reset key repeating in case a keyboard device was added or removed or something.
+    resetKeyRepeatLocked();
+
+    // Enqueue a command to run outside the lock to tell the policy that the configuration changed.
+    CommandEntry* commandEntry = postCommandLocked(
+            & InputDispatcher::doNotifyConfigurationChangedInterruptible);
+    commandEntry->eventTime = entry->eventTime;
+    return true;
+}
+
+bool InputDispatcher::dispatchDeviceResetLocked(
+        nsecs_t currentTime, DeviceResetEntry* entry) {
+#if DEBUG_OUTBOUND_EVENT_DETAILS
+    ALOGD("dispatchDeviceReset - eventTime=%lld, deviceId=%d", entry->eventTime, entry->deviceId);
+#endif
+
+    CancelationOptions options(CancelationOptions::CANCEL_ALL_EVENTS,
+            "device was reset");
+    options.deviceId = entry->deviceId;
+    synthesizeCancelationEventsForAllConnectionsLocked(options);
+    return true;
+}
+
+bool InputDispatcher::dispatchKeyLocked(nsecs_t currentTime, KeyEntry* entry,
+        DropReason* dropReason, nsecs_t* nextWakeupTime) {
+    // Preprocessing.
+    if (! entry->dispatchInProgress) {
+        if (entry->repeatCount == 0
+                && entry->action == AKEY_EVENT_ACTION_DOWN
+                && (entry->policyFlags & POLICY_FLAG_TRUSTED)
+                && (!(entry->policyFlags & POLICY_FLAG_DISABLE_KEY_REPEAT))) {
+            if (mKeyRepeatState.lastKeyEntry
+                    && mKeyRepeatState.lastKeyEntry->keyCode == entry->keyCode) {
+                // We have seen two identical key downs in a row which indicates that the device
+                // driver is automatically generating key repeats itself.  We take note of the
+                // repeat here, but we disable our own next key repeat timer since it is clear that
+                // we will not need to synthesize key repeats ourselves.
+                entry->repeatCount = mKeyRepeatState.lastKeyEntry->repeatCount + 1;
+                resetKeyRepeatLocked();
+                mKeyRepeatState.nextRepeatTime = LONG_LONG_MAX; // don't generate repeats ourselves
+            } else {
+                // Not a repeat.  Save key down state in case we do see a repeat later.
+                resetKeyRepeatLocked();
+                mKeyRepeatState.nextRepeatTime = entry->eventTime + mConfig.keyRepeatTimeout;
+            }
+            mKeyRepeatState.lastKeyEntry = entry;
+            entry->refCount += 1;
+        } else if (! entry->syntheticRepeat) {
+            resetKeyRepeatLocked();
+        }
+
+        if (entry->repeatCount == 1) {
+            entry->flags |= AKEY_EVENT_FLAG_LONG_PRESS;
+        } else {
+            entry->flags &= ~AKEY_EVENT_FLAG_LONG_PRESS;
+        }
+
+        entry->dispatchInProgress = true;
+
+        logOutboundKeyDetailsLocked("dispatchKey - ", entry);
+    }
+
+    // Handle case where the policy asked us to try again later last time.
+    if (entry->interceptKeyResult == KeyEntry::INTERCEPT_KEY_RESULT_TRY_AGAIN_LATER) {
+        if (currentTime < entry->interceptKeyWakeupTime) {
+            if (entry->interceptKeyWakeupTime < *nextWakeupTime) {
+                *nextWakeupTime = entry->interceptKeyWakeupTime;
+            }
+            return false; // wait until next wakeup
+        }
+        entry->interceptKeyResult = KeyEntry::INTERCEPT_KEY_RESULT_UNKNOWN;
+        entry->interceptKeyWakeupTime = 0;
+    }
+
+    // Give the policy a chance to intercept the key.
+    if (entry->interceptKeyResult == KeyEntry::INTERCEPT_KEY_RESULT_UNKNOWN) {
+        if (entry->policyFlags & POLICY_FLAG_PASS_TO_USER) {
+            CommandEntry* commandEntry = postCommandLocked(
+                    & InputDispatcher::doInterceptKeyBeforeDispatchingLockedInterruptible);
+            if (mFocusedWindowHandle != NULL) {
+                commandEntry->inputWindowHandle = mFocusedWindowHandle;
+            }
+            commandEntry->keyEntry = entry;
+            entry->refCount += 1;
+            return false; // wait for the command to run
+        } else {
+            entry->interceptKeyResult = KeyEntry::INTERCEPT_KEY_RESULT_CONTINUE;
+        }
+    } else if (entry->interceptKeyResult == KeyEntry::INTERCEPT_KEY_RESULT_SKIP) {
+        if (*dropReason == DROP_REASON_NOT_DROPPED) {
+            *dropReason = DROP_REASON_POLICY;
+        }
+    }
+
+    // Clean up if dropping the event.
+    if (*dropReason != DROP_REASON_NOT_DROPPED) {
+        setInjectionResultLocked(entry, *dropReason == DROP_REASON_POLICY
+                ? INPUT_EVENT_INJECTION_SUCCEEDED : INPUT_EVENT_INJECTION_FAILED);
+        return true;
+    }
+
+    // Identify targets.
+    Vector<InputTarget> inputTargets;
+    int32_t injectionResult = findFocusedWindowTargetsLocked(currentTime,
+            entry, inputTargets, nextWakeupTime);
+    if (injectionResult == INPUT_EVENT_INJECTION_PENDING) {
+        return false;
+    }
+
+    setInjectionResultLocked(entry, injectionResult);
+    if (injectionResult != INPUT_EVENT_INJECTION_SUCCEEDED) {
+        return true;
+    }
+
+    addMonitoringTargetsLocked(inputTargets);
+
+    // Dispatch the key.
+    dispatchEventLocked(currentTime, entry, inputTargets);
+    return true;
+}
+
+void InputDispatcher::logOutboundKeyDetailsLocked(const char* prefix, const KeyEntry* entry) {
+#if DEBUG_OUTBOUND_EVENT_DETAILS
+    ALOGD("%seventTime=%lld, deviceId=%d, source=0x%x, policyFlags=0x%x, "
+            "action=0x%x, flags=0x%x, keyCode=0x%x, scanCode=0x%x, metaState=0x%x, "
+            "repeatCount=%d, downTime=%lld",
+            prefix,
+            entry->eventTime, entry->deviceId, entry->source, entry->policyFlags,
+            entry->action, entry->flags, entry->keyCode, entry->scanCode, entry->metaState,
+            entry->repeatCount, entry->downTime);
+#endif
+}
+
+bool InputDispatcher::dispatchMotionLocked(
+        nsecs_t currentTime, MotionEntry* entry, DropReason* dropReason, nsecs_t* nextWakeupTime) {
+    // Preprocessing.
+    if (! entry->dispatchInProgress) {
+        entry->dispatchInProgress = true;
+
+        logOutboundMotionDetailsLocked("dispatchMotion - ", entry);
+    }
+
+    // Clean up if dropping the event.
+    if (*dropReason != DROP_REASON_NOT_DROPPED) {
+        setInjectionResultLocked(entry, *dropReason == DROP_REASON_POLICY
+                ? INPUT_EVENT_INJECTION_SUCCEEDED : INPUT_EVENT_INJECTION_FAILED);
+        return true;
+    }
+
+    bool isPointerEvent = entry->source & AINPUT_SOURCE_CLASS_POINTER;
+
+    // Identify targets.
+    Vector<InputTarget> inputTargets;
+
+    bool conflictingPointerActions = false;
+    int32_t injectionResult;
+    if (isPointerEvent) {
+        // Pointer event.  (eg. touchscreen)
+        injectionResult = findTouchedWindowTargetsLocked(currentTime,
+                entry, inputTargets, nextWakeupTime, &conflictingPointerActions);
+    } else {
+        // Non touch event.  (eg. trackball)
+        injectionResult = findFocusedWindowTargetsLocked(currentTime,
+                entry, inputTargets, nextWakeupTime);
+    }
+    if (injectionResult == INPUT_EVENT_INJECTION_PENDING) {
+        return false;
+    }
+
+    setInjectionResultLocked(entry, injectionResult);
+    if (injectionResult != INPUT_EVENT_INJECTION_SUCCEEDED) {
+        return true;
+    }
+
+    // TODO: support sending secondary display events to input monitors
+    if (isMainDisplay(entry->displayId)) {
+        addMonitoringTargetsLocked(inputTargets);
+    }
+
+    // Dispatch the motion.
+    if (conflictingPointerActions) {
+        CancelationOptions options(CancelationOptions::CANCEL_POINTER_EVENTS,
+                "conflicting pointer actions");
+        synthesizeCancelationEventsForAllConnectionsLocked(options);
+    }
+    dispatchEventLocked(currentTime, entry, inputTargets);
+    return true;
+}
+
+
+void InputDispatcher::logOutboundMotionDetailsLocked(const char* prefix, const MotionEntry* entry) {
+#if DEBUG_OUTBOUND_EVENT_DETAILS
+    ALOGD("%seventTime=%lld, deviceId=%d, source=0x%x, policyFlags=0x%x, "
+            "action=0x%x, flags=0x%x, "
+            "metaState=0x%x, buttonState=0x%x, "
+            "edgeFlags=0x%x, xPrecision=%f, yPrecision=%f, downTime=%lld",
+            prefix,
+            entry->eventTime, entry->deviceId, entry->source, entry->policyFlags,
+            entry->action, entry->flags,
+            entry->metaState, entry->buttonState,
+            entry->edgeFlags, entry->xPrecision, entry->yPrecision,
+            entry->downTime);
+
+    for (uint32_t i = 0; i < entry->pointerCount; i++) {
+        ALOGD("  Pointer %d: id=%d, toolType=%d, "
+                "x=%f, y=%f, pressure=%f, size=%f, "
+                "touchMajor=%f, touchMinor=%f, toolMajor=%f, toolMinor=%f, "
+                "orientation=%f",
+                i, entry->pointerProperties[i].id,
+                entry->pointerProperties[i].toolType,
+                entry->pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_X),
+                entry->pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_Y),
+                entry->pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_PRESSURE),
+                entry->pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_SIZE),
+                entry->pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_TOUCH_MAJOR),
+                entry->pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_TOUCH_MINOR),
+                entry->pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_TOOL_MAJOR),
+                entry->pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_TOOL_MINOR),
+                entry->pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_ORIENTATION));
+    }
+#endif
+}
+
+void InputDispatcher::dispatchEventLocked(nsecs_t currentTime,
+        EventEntry* eventEntry, const Vector<InputTarget>& inputTargets) {
+#if DEBUG_DISPATCH_CYCLE
+    ALOGD("dispatchEventToCurrentInputTargets");
+#endif
+
+    ALOG_ASSERT(eventEntry->dispatchInProgress); // should already have been set to true
+
+    pokeUserActivityLocked(eventEntry);
+
+    for (size_t i = 0; i < inputTargets.size(); i++) {
+        const InputTarget& inputTarget = inputTargets.itemAt(i);
+
+        ssize_t connectionIndex = getConnectionIndexLocked(inputTarget.inputChannel);
+        if (connectionIndex >= 0) {
+            sp<Connection> connection = mConnectionsByFd.valueAt(connectionIndex);
+            prepareDispatchCycleLocked(currentTime, connection, eventEntry, &inputTarget);
+        } else {
+#if DEBUG_FOCUS
+            ALOGD("Dropping event delivery to target with channel '%s' because it "
+                    "is no longer registered with the input dispatcher.",
+                    inputTarget.inputChannel->getName().string());
+#endif
+        }
+    }
+}
+
+int32_t InputDispatcher::handleTargetsNotReadyLocked(nsecs_t currentTime,
+        const EventEntry* entry,
+        const sp<InputApplicationHandle>& applicationHandle,
+        const sp<InputWindowHandle>& windowHandle,
+        nsecs_t* nextWakeupTime, const char* reason) {
+    if (applicationHandle == NULL && windowHandle == NULL) {
+        if (mInputTargetWaitCause != INPUT_TARGET_WAIT_CAUSE_SYSTEM_NOT_READY) {
+#if DEBUG_FOCUS
+            ALOGD("Waiting for system to become ready for input.  Reason: %s", reason);
+#endif
+            mInputTargetWaitCause = INPUT_TARGET_WAIT_CAUSE_SYSTEM_NOT_READY;
+            mInputTargetWaitStartTime = currentTime;
+            mInputTargetWaitTimeoutTime = LONG_LONG_MAX;
+            mInputTargetWaitTimeoutExpired = false;
+            mInputTargetWaitApplicationHandle.clear();
+        }
+    } else {
+        if (mInputTargetWaitCause != INPUT_TARGET_WAIT_CAUSE_APPLICATION_NOT_READY) {
+#if DEBUG_FOCUS
+            ALOGD("Waiting for application to become ready for input: %s.  Reason: %s",
+                    getApplicationWindowLabelLocked(applicationHandle, windowHandle).string(),
+                    reason);
+#endif
+            nsecs_t timeout;
+            if (windowHandle != NULL) {
+                timeout = windowHandle->getDispatchingTimeout(DEFAULT_INPUT_DISPATCHING_TIMEOUT);
+            } else if (applicationHandle != NULL) {
+                timeout = applicationHandle->getDispatchingTimeout(
+                        DEFAULT_INPUT_DISPATCHING_TIMEOUT);
+            } else {
+                timeout = DEFAULT_INPUT_DISPATCHING_TIMEOUT;
+            }
+
+            mInputTargetWaitCause = INPUT_TARGET_WAIT_CAUSE_APPLICATION_NOT_READY;
+            mInputTargetWaitStartTime = currentTime;
+            mInputTargetWaitTimeoutTime = currentTime + timeout;
+            mInputTargetWaitTimeoutExpired = false;
+            mInputTargetWaitApplicationHandle.clear();
+
+            if (windowHandle != NULL) {
+                mInputTargetWaitApplicationHandle = windowHandle->inputApplicationHandle;
+            }
+            if (mInputTargetWaitApplicationHandle == NULL && applicationHandle != NULL) {
+                mInputTargetWaitApplicationHandle = applicationHandle;
+            }
+        }
+    }
+
+    if (mInputTargetWaitTimeoutExpired) {
+        return INPUT_EVENT_INJECTION_TIMED_OUT;
+    }
+
+    if (currentTime >= mInputTargetWaitTimeoutTime) {
+        onANRLocked(currentTime, applicationHandle, windowHandle,
+                entry->eventTime, mInputTargetWaitStartTime, reason);
+
+        // Force poll loop to wake up immediately on next iteration once we get the
+        // ANR response back from the policy.
+        *nextWakeupTime = LONG_LONG_MIN;
+        return INPUT_EVENT_INJECTION_PENDING;
+    } else {
+        // Force poll loop to wake up when timeout is due.
+        if (mInputTargetWaitTimeoutTime < *nextWakeupTime) {
+            *nextWakeupTime = mInputTargetWaitTimeoutTime;
+        }
+        return INPUT_EVENT_INJECTION_PENDING;
+    }
+}
+
+void InputDispatcher::resumeAfterTargetsNotReadyTimeoutLocked(nsecs_t newTimeout,
+        const sp<InputChannel>& inputChannel) {
+    if (newTimeout > 0) {
+        // Extend the timeout.
+        mInputTargetWaitTimeoutTime = now() + newTimeout;
+    } else {
+        // Give up.
+        mInputTargetWaitTimeoutExpired = true;
+
+        // Input state will not be realistic.  Mark it out of sync.
+        if (inputChannel.get()) {
+            ssize_t connectionIndex = getConnectionIndexLocked(inputChannel);
+            if (connectionIndex >= 0) {
+                sp<Connection> connection = mConnectionsByFd.valueAt(connectionIndex);
+                sp<InputWindowHandle> windowHandle = connection->inputWindowHandle;
+
+                if (windowHandle != NULL) {
+                    mTouchState.removeWindow(windowHandle);
+                }
+
+                if (connection->status == Connection::STATUS_NORMAL) {
+                    CancelationOptions options(CancelationOptions::CANCEL_ALL_EVENTS,
+                            "application not responding");
+                    synthesizeCancelationEventsForConnectionLocked(connection, options);
+                }
+            }
+        }
+    }
+}
+
+nsecs_t InputDispatcher::getTimeSpentWaitingForApplicationLocked(
+        nsecs_t currentTime) {
+    if (mInputTargetWaitCause == INPUT_TARGET_WAIT_CAUSE_APPLICATION_NOT_READY) {
+        return currentTime - mInputTargetWaitStartTime;
+    }
+    return 0;
+}
+
+void InputDispatcher::resetANRTimeoutsLocked() {
+#if DEBUG_FOCUS
+        ALOGD("Resetting ANR timeouts.");
+#endif
+
+    // Reset input target wait timeout.
+    mInputTargetWaitCause = INPUT_TARGET_WAIT_CAUSE_NONE;
+    mInputTargetWaitApplicationHandle.clear();
+}
+
+int32_t InputDispatcher::findFocusedWindowTargetsLocked(nsecs_t currentTime,
+        const EventEntry* entry, Vector<InputTarget>& inputTargets, nsecs_t* nextWakeupTime) {
+    int32_t injectionResult;
+
+    // If there is no currently focused window and no focused application
+    // then drop the event.
+    if (mFocusedWindowHandle == NULL) {
+        if (mFocusedApplicationHandle != NULL) {
+            injectionResult = handleTargetsNotReadyLocked(currentTime, entry,
+                    mFocusedApplicationHandle, NULL, nextWakeupTime,
+                    "Waiting because no window has focus but there is a "
+                    "focused application that may eventually add a window "
+                    "when it finishes starting up.");
+            goto Unresponsive;
+        }
+
+        ALOGI("Dropping event because there is no focused window or focused application.");
+        injectionResult = INPUT_EVENT_INJECTION_FAILED;
+        goto Failed;
+    }
+
+    // Check permissions.
+    if (! checkInjectionPermission(mFocusedWindowHandle, entry->injectionState)) {
+        injectionResult = INPUT_EVENT_INJECTION_PERMISSION_DENIED;
+        goto Failed;
+    }
+
+    // If the currently focused window is paused then keep waiting.
+    if (mFocusedWindowHandle->getInfo()->paused) {
+        injectionResult = handleTargetsNotReadyLocked(currentTime, entry,
+                mFocusedApplicationHandle, mFocusedWindowHandle, nextWakeupTime,
+                "Waiting because the focused window is paused.");
+        goto Unresponsive;
+    }
+
+    // If the currently focused window is still working on previous events then keep waiting.
+    if (!isWindowReadyForMoreInputLocked(currentTime, mFocusedWindowHandle, entry)) {
+        injectionResult = handleTargetsNotReadyLocked(currentTime, entry,
+                mFocusedApplicationHandle, mFocusedWindowHandle, nextWakeupTime,
+                "Waiting because the focused window has not finished "
+                "processing the input events that were previously delivered to it.");
+        goto Unresponsive;
+    }
+
+    // Success!  Output targets.
+    injectionResult = INPUT_EVENT_INJECTION_SUCCEEDED;
+    addWindowTargetLocked(mFocusedWindowHandle,
+            InputTarget::FLAG_FOREGROUND | InputTarget::FLAG_DISPATCH_AS_IS, BitSet32(0),
+            inputTargets);
+
+    // Done.
+Failed:
+Unresponsive:
+    nsecs_t timeSpentWaitingForApplication = getTimeSpentWaitingForApplicationLocked(currentTime);
+    updateDispatchStatisticsLocked(currentTime, entry,
+            injectionResult, timeSpentWaitingForApplication);
+#if DEBUG_FOCUS
+    ALOGD("findFocusedWindow finished: injectionResult=%d, "
+            "timeSpentWaitingForApplication=%0.1fms",
+            injectionResult, timeSpentWaitingForApplication / 1000000.0);
+#endif
+    return injectionResult;
+}
+
+int32_t InputDispatcher::findTouchedWindowTargetsLocked(nsecs_t currentTime,
+        const MotionEntry* entry, Vector<InputTarget>& inputTargets, nsecs_t* nextWakeupTime,
+        bool* outConflictingPointerActions) {
+    enum InjectionPermission {
+        INJECTION_PERMISSION_UNKNOWN,
+        INJECTION_PERMISSION_GRANTED,
+        INJECTION_PERMISSION_DENIED
+    };
+
+    // For security reasons, we defer updating the touch state until we are sure that
+    // event injection will be allowed.
+    //
+    // FIXME In the original code, screenWasOff could never be set to true.
+    //       The reason is that the POLICY_FLAG_WOKE_HERE
+    //       and POLICY_FLAG_BRIGHT_HERE flags were set only when preprocessing raw
+    //       EV_KEY, EV_REL and EV_ABS events.  As it happens, the touch event was
+    //       actually enqueued using the policyFlags that appeared in the final EV_SYN
+    //       events upon which no preprocessing took place.  So policyFlags was always 0.
+    //       In the new native input dispatcher we're a bit more careful about event
+    //       preprocessing so the touches we receive can actually have non-zero policyFlags.
+    //       Unfortunately we obtain undesirable behavior.
+    //
+    //       Here's what happens:
+    //
+    //       When the device dims in anticipation of going to sleep, touches
+    //       in windows which have FLAG_TOUCHABLE_WHEN_WAKING cause
+    //       the device to brighten and reset the user activity timer.
+    //       Touches on other windows (such as the launcher window)
+    //       are dropped.  Then after a moment, the device goes to sleep.  Oops.
+    //
+    //       Also notice how screenWasOff was being initialized using POLICY_FLAG_BRIGHT_HERE
+    //       instead of POLICY_FLAG_WOKE_HERE...
+    //
+    bool screenWasOff = false; // original policy: policyFlags & POLICY_FLAG_BRIGHT_HERE;
+
+    int32_t displayId = entry->displayId;
+    int32_t action = entry->action;
+    int32_t maskedAction = action & AMOTION_EVENT_ACTION_MASK;
+
+    // Update the touch state as needed based on the properties of the touch event.
+    int32_t injectionResult = INPUT_EVENT_INJECTION_PENDING;
+    InjectionPermission injectionPermission = INJECTION_PERMISSION_UNKNOWN;
+    sp<InputWindowHandle> newHoverWindowHandle;
+
+    bool isSplit = mTouchState.split;
+    bool switchedDevice = mTouchState.deviceId >= 0 && mTouchState.displayId >= 0
+            && (mTouchState.deviceId != entry->deviceId
+                    || mTouchState.source != entry->source
+                    || mTouchState.displayId != displayId);
+    bool isHoverAction = (maskedAction == AMOTION_EVENT_ACTION_HOVER_MOVE
+            || maskedAction == AMOTION_EVENT_ACTION_HOVER_ENTER
+            || maskedAction == AMOTION_EVENT_ACTION_HOVER_EXIT);
+    bool newGesture = (maskedAction == AMOTION_EVENT_ACTION_DOWN
+            || maskedAction == AMOTION_EVENT_ACTION_SCROLL
+            || isHoverAction);
+    bool wrongDevice = false;
+    if (newGesture) {
+        bool down = maskedAction == AMOTION_EVENT_ACTION_DOWN;
+        if (switchedDevice && mTouchState.down && !down) {
+#if DEBUG_FOCUS
+            ALOGD("Dropping event because a pointer for a different device is already down.");
+#endif
+            mTempTouchState.copyFrom(mTouchState);
+            injectionResult = INPUT_EVENT_INJECTION_FAILED;
+            switchedDevice = false;
+            wrongDevice = true;
+            goto Failed;
+        }
+        mTempTouchState.reset();
+        mTempTouchState.down = down;
+        mTempTouchState.deviceId = entry->deviceId;
+        mTempTouchState.source = entry->source;
+        mTempTouchState.displayId = displayId;
+        isSplit = false;
+    } else {
+        mTempTouchState.copyFrom(mTouchState);
+    }
+
+    if (newGesture || (isSplit && maskedAction == AMOTION_EVENT_ACTION_POINTER_DOWN)) {
+        /* Case 1: New splittable pointer going down, or need target for hover or scroll. */
+
+        int32_t pointerIndex = getMotionEventActionPointerIndex(action);
+        int32_t x = int32_t(entry->pointerCoords[pointerIndex].
+                getAxisValue(AMOTION_EVENT_AXIS_X));
+        int32_t y = int32_t(entry->pointerCoords[pointerIndex].
+                getAxisValue(AMOTION_EVENT_AXIS_Y));
+        sp<InputWindowHandle> newTouchedWindowHandle;
+        sp<InputWindowHandle> topErrorWindowHandle;
+        bool isTouchModal = false;
+
+        // Traverse windows from front to back to find touched window and outside targets.
+        size_t numWindows = mWindowHandles.size();
+        for (size_t i = 0; i < numWindows; i++) {
+            sp<InputWindowHandle> windowHandle = mWindowHandles.itemAt(i);
+            const InputWindowInfo* windowInfo = windowHandle->getInfo();
+            if (windowInfo->displayId != displayId) {
+                continue; // wrong display
+            }
+
+            int32_t flags = windowInfo->layoutParamsFlags;
+            if (flags & InputWindowInfo::FLAG_SYSTEM_ERROR) {
+                if (topErrorWindowHandle == NULL) {
+                    topErrorWindowHandle = windowHandle;
+                }
+            }
+
+            if (windowInfo->visible) {
+                if (! (flags & InputWindowInfo::FLAG_NOT_TOUCHABLE)) {
+                    isTouchModal = (flags & (InputWindowInfo::FLAG_NOT_FOCUSABLE
+                            | InputWindowInfo::FLAG_NOT_TOUCH_MODAL)) == 0;
+                    if (isTouchModal || windowInfo->touchableRegionContainsPoint(x, y)) {
+                        if (! screenWasOff
+                                || (flags & InputWindowInfo::FLAG_TOUCHABLE_WHEN_WAKING)) {
+                            newTouchedWindowHandle = windowHandle;
+                        }
+                        break; // found touched window, exit window loop
+                    }
+                }
+
+                if (maskedAction == AMOTION_EVENT_ACTION_DOWN
+                        && (flags & InputWindowInfo::FLAG_WATCH_OUTSIDE_TOUCH)) {
+                    int32_t outsideTargetFlags = InputTarget::FLAG_DISPATCH_AS_OUTSIDE;
+                    if (isWindowObscuredAtPointLocked(windowHandle, x, y)) {
+                        outsideTargetFlags |= InputTarget::FLAG_WINDOW_IS_OBSCURED;
+                    }
+
+                    mTempTouchState.addOrUpdateWindow(
+                            windowHandle, outsideTargetFlags, BitSet32(0));
+                }
+            }
+        }
+
+        // If there is an error window but it is not taking focus (typically because
+        // it is invisible) then wait for it.  Any other focused window may in
+        // fact be in ANR state.
+        if (topErrorWindowHandle != NULL && newTouchedWindowHandle != topErrorWindowHandle) {
+            injectionResult = handleTargetsNotReadyLocked(currentTime, entry,
+                    NULL, NULL, nextWakeupTime,
+                    "Waiting because a system error window is about to be displayed.");
+            injectionPermission = INJECTION_PERMISSION_UNKNOWN;
+            goto Unresponsive;
+        }
+
+        // Figure out whether splitting will be allowed for this window.
+        if (newTouchedWindowHandle != NULL
+                && newTouchedWindowHandle->getInfo()->supportsSplitTouch()) {
+            // New window supports splitting.
+            isSplit = true;
+        } else if (isSplit) {
+            // New window does not support splitting but we have already split events.
+            // Ignore the new window.
+            newTouchedWindowHandle = NULL;
+        }
+
+        // Handle the case where we did not find a window.
+        if (newTouchedWindowHandle == NULL) {
+            // Try to assign the pointer to the first foreground window we find, if there is one.
+            newTouchedWindowHandle = mTempTouchState.getFirstForegroundWindowHandle();
+            if (newTouchedWindowHandle == NULL) {
+                // There is no touched window.  If this is an initial down event
+                // then wait for a window to appear that will handle the touch.  This is
+                // to ensure that we report an ANR in the case where an application has started
+                // but not yet put up a window and the user is starting to get impatient.
+                if (maskedAction == AMOTION_EVENT_ACTION_DOWN
+                        && mFocusedApplicationHandle != NULL) {
+                    injectionResult = handleTargetsNotReadyLocked(currentTime, entry,
+                            mFocusedApplicationHandle, NULL, nextWakeupTime,
+                            "Waiting because there is no touchable window that can "
+                            "handle the event but there is focused application that may "
+                            "eventually add a new window when it finishes starting up.");
+                    goto Unresponsive;
+                }
+
+                ALOGI("Dropping event because there is no touched window.");
+                injectionResult = INPUT_EVENT_INJECTION_FAILED;
+                goto Failed;
+            }
+        }
+
+        // Set target flags.
+        int32_t targetFlags = InputTarget::FLAG_FOREGROUND | InputTarget::FLAG_DISPATCH_AS_IS;
+        if (isSplit) {
+            targetFlags |= InputTarget::FLAG_SPLIT;
+        }
+        if (isWindowObscuredAtPointLocked(newTouchedWindowHandle, x, y)) {
+            targetFlags |= InputTarget::FLAG_WINDOW_IS_OBSCURED;
+        }
+
+        // Update hover state.
+        if (isHoverAction) {
+            newHoverWindowHandle = newTouchedWindowHandle;
+        } else if (maskedAction == AMOTION_EVENT_ACTION_SCROLL) {
+            newHoverWindowHandle = mLastHoverWindowHandle;
+        }
+
+        // Update the temporary touch state.
+        BitSet32 pointerIds;
+        if (isSplit) {
+            uint32_t pointerId = entry->pointerProperties[pointerIndex].id;
+            pointerIds.markBit(pointerId);
+        }
+        mTempTouchState.addOrUpdateWindow(newTouchedWindowHandle, targetFlags, pointerIds);
+    } else {
+        /* Case 2: Pointer move, up, cancel or non-splittable pointer down. */
+
+        // If the pointer is not currently down, then ignore the event.
+        if (! mTempTouchState.down) {
+#if DEBUG_FOCUS
+            ALOGD("Dropping event because the pointer is not down or we previously "
+                    "dropped the pointer down event.");
+#endif
+            injectionResult = INPUT_EVENT_INJECTION_FAILED;
+            goto Failed;
+        }
+
+        // Check whether touches should slip outside of the current foreground window.
+        if (maskedAction == AMOTION_EVENT_ACTION_MOVE
+                && entry->pointerCount == 1
+                && mTempTouchState.isSlippery()) {
+            int32_t x = int32_t(entry->pointerCoords[0].getAxisValue(AMOTION_EVENT_AXIS_X));
+            int32_t y = int32_t(entry->pointerCoords[0].getAxisValue(AMOTION_EVENT_AXIS_Y));
+
+            sp<InputWindowHandle> oldTouchedWindowHandle =
+                    mTempTouchState.getFirstForegroundWindowHandle();
+            sp<InputWindowHandle> newTouchedWindowHandle =
+                    findTouchedWindowAtLocked(displayId, x, y);
+            if (oldTouchedWindowHandle != newTouchedWindowHandle
+                    && newTouchedWindowHandle != NULL) {
+#if DEBUG_FOCUS
+                ALOGD("Touch is slipping out of window %s into window %s.",
+                        oldTouchedWindowHandle->getName().string(),
+                        newTouchedWindowHandle->getName().string());
+#endif
+                // Make a slippery exit from the old window.
+                mTempTouchState.addOrUpdateWindow(oldTouchedWindowHandle,
+                        InputTarget::FLAG_DISPATCH_AS_SLIPPERY_EXIT, BitSet32(0));
+
+                // Make a slippery entrance into the new window.
+                if (newTouchedWindowHandle->getInfo()->supportsSplitTouch()) {
+                    isSplit = true;
+                }
+
+                int32_t targetFlags = InputTarget::FLAG_FOREGROUND
+                        | InputTarget::FLAG_DISPATCH_AS_SLIPPERY_ENTER;
+                if (isSplit) {
+                    targetFlags |= InputTarget::FLAG_SPLIT;
+                }
+                if (isWindowObscuredAtPointLocked(newTouchedWindowHandle, x, y)) {
+                    targetFlags |= InputTarget::FLAG_WINDOW_IS_OBSCURED;
+                }
+
+                BitSet32 pointerIds;
+                if (isSplit) {
+                    pointerIds.markBit(entry->pointerProperties[0].id);
+                }
+                mTempTouchState.addOrUpdateWindow(newTouchedWindowHandle, targetFlags, pointerIds);
+            }
+        }
+    }
+
+    if (newHoverWindowHandle != mLastHoverWindowHandle) {
+        // Let the previous window know that the hover sequence is over.
+        if (mLastHoverWindowHandle != NULL) {
+#if DEBUG_HOVER
+            ALOGD("Sending hover exit event to window %s.",
+                    mLastHoverWindowHandle->getName().string());
+#endif
+            mTempTouchState.addOrUpdateWindow(mLastHoverWindowHandle,
+                    InputTarget::FLAG_DISPATCH_AS_HOVER_EXIT, BitSet32(0));
+        }
+
+        // Let the new window know that the hover sequence is starting.
+        if (newHoverWindowHandle != NULL) {
+#if DEBUG_HOVER
+            ALOGD("Sending hover enter event to window %s.",
+                    newHoverWindowHandle->getName().string());
+#endif
+            mTempTouchState.addOrUpdateWindow(newHoverWindowHandle,
+                    InputTarget::FLAG_DISPATCH_AS_HOVER_ENTER, BitSet32(0));
+        }
+    }
+
+    // Check permission to inject into all touched foreground windows and ensure there
+    // is at least one touched foreground window.
+    {
+        bool haveForegroundWindow = false;
+        for (size_t i = 0; i < mTempTouchState.windows.size(); i++) {
+            const TouchedWindow& touchedWindow = mTempTouchState.windows[i];
+            if (touchedWindow.targetFlags & InputTarget::FLAG_FOREGROUND) {
+                haveForegroundWindow = true;
+                if (! checkInjectionPermission(touchedWindow.windowHandle,
+                        entry->injectionState)) {
+                    injectionResult = INPUT_EVENT_INJECTION_PERMISSION_DENIED;
+                    injectionPermission = INJECTION_PERMISSION_DENIED;
+                    goto Failed;
+                }
+            }
+        }
+        if (! haveForegroundWindow) {
+#if DEBUG_FOCUS
+            ALOGD("Dropping event because there is no touched foreground window to receive it.");
+#endif
+            injectionResult = INPUT_EVENT_INJECTION_FAILED;
+            goto Failed;
+        }
+
+        // Permission granted to injection into all touched foreground windows.
+        injectionPermission = INJECTION_PERMISSION_GRANTED;
+    }
+
+    // Check whether windows listening for outside touches are owned by the same UID. If it is
+    // set the policy flag that we will not reveal coordinate information to this window.
+    if (maskedAction == AMOTION_EVENT_ACTION_DOWN) {
+        sp<InputWindowHandle> foregroundWindowHandle =
+                mTempTouchState.getFirstForegroundWindowHandle();
+        const int32_t foregroundWindowUid = foregroundWindowHandle->getInfo()->ownerUid;
+        for (size_t i = 0; i < mTempTouchState.windows.size(); i++) {
+            const TouchedWindow& touchedWindow = mTempTouchState.windows[i];
+            if (touchedWindow.targetFlags & InputTarget::FLAG_DISPATCH_AS_OUTSIDE) {
+                sp<InputWindowHandle> inputWindowHandle = touchedWindow.windowHandle;
+                if (inputWindowHandle->getInfo()->ownerUid != foregroundWindowUid) {
+                    mTempTouchState.addOrUpdateWindow(inputWindowHandle,
+                            InputTarget::FLAG_ZERO_COORDS, BitSet32(0));
+                }
+            }
+        }
+    }
+
+    // Ensure all touched foreground windows are ready for new input.
+    for (size_t i = 0; i < mTempTouchState.windows.size(); i++) {
+        const TouchedWindow& touchedWindow = mTempTouchState.windows[i];
+        if (touchedWindow.targetFlags & InputTarget::FLAG_FOREGROUND) {
+            // If the touched window is paused then keep waiting.
+            if (touchedWindow.windowHandle->getInfo()->paused) {
+                injectionResult = handleTargetsNotReadyLocked(currentTime, entry,
+                        NULL, touchedWindow.windowHandle, nextWakeupTime,
+                        "Waiting because the touched window is paused.");
+                goto Unresponsive;
+            }
+
+            // If the touched window is still working on previous events then keep waiting.
+            if (!isWindowReadyForMoreInputLocked(currentTime, touchedWindow.windowHandle, entry)) {
+                injectionResult = handleTargetsNotReadyLocked(currentTime, entry,
+                        NULL, touchedWindow.windowHandle, nextWakeupTime,
+                        "Waiting because the touched window has not finished "
+                        "processing the input events that were previously delivered to it.");
+                goto Unresponsive;
+            }
+        }
+    }
+
+    // If this is the first pointer going down and the touched window has a wallpaper
+    // then also add the touched wallpaper windows so they are locked in for the duration
+    // of the touch gesture.
+    // We do not collect wallpapers during HOVER_MOVE or SCROLL because the wallpaper
+    // engine only supports touch events.  We would need to add a mechanism similar
+    // to View.onGenericMotionEvent to enable wallpapers to handle these events.
+    if (maskedAction == AMOTION_EVENT_ACTION_DOWN) {
+        sp<InputWindowHandle> foregroundWindowHandle =
+                mTempTouchState.getFirstForegroundWindowHandle();
+        if (foregroundWindowHandle->getInfo()->hasWallpaper) {
+            for (size_t i = 0; i < mWindowHandles.size(); i++) {
+                sp<InputWindowHandle> windowHandle = mWindowHandles.itemAt(i);
+                const InputWindowInfo* info = windowHandle->getInfo();
+                if (info->displayId == displayId
+                        && windowHandle->getInfo()->layoutParamsType
+                                == InputWindowInfo::TYPE_WALLPAPER) {
+                    mTempTouchState.addOrUpdateWindow(windowHandle,
+                            InputTarget::FLAG_WINDOW_IS_OBSCURED
+                                    | InputTarget::FLAG_DISPATCH_AS_IS,
+                            BitSet32(0));
+                }
+            }
+        }
+    }
+
+    // Success!  Output targets.
+    injectionResult = INPUT_EVENT_INJECTION_SUCCEEDED;
+
+    for (size_t i = 0; i < mTempTouchState.windows.size(); i++) {
+        const TouchedWindow& touchedWindow = mTempTouchState.windows.itemAt(i);
+        addWindowTargetLocked(touchedWindow.windowHandle, touchedWindow.targetFlags,
+                touchedWindow.pointerIds, inputTargets);
+    }
+
+    // Drop the outside or hover touch windows since we will not care about them
+    // in the next iteration.
+    mTempTouchState.filterNonAsIsTouchWindows();
+
+Failed:
+    // Check injection permission once and for all.
+    if (injectionPermission == INJECTION_PERMISSION_UNKNOWN) {
+        if (checkInjectionPermission(NULL, entry->injectionState)) {
+            injectionPermission = INJECTION_PERMISSION_GRANTED;
+        } else {
+            injectionPermission = INJECTION_PERMISSION_DENIED;
+        }
+    }
+
+    // Update final pieces of touch state if the injector had permission.
+    if (injectionPermission == INJECTION_PERMISSION_GRANTED) {
+        if (!wrongDevice) {
+            if (switchedDevice) {
+#if DEBUG_FOCUS
+                ALOGD("Conflicting pointer actions: Switched to a different device.");
+#endif
+                *outConflictingPointerActions = true;
+            }
+
+            if (isHoverAction) {
+                // Started hovering, therefore no longer down.
+                if (mTouchState.down) {
+#if DEBUG_FOCUS
+                    ALOGD("Conflicting pointer actions: Hover received while pointer was down.");
+#endif
+                    *outConflictingPointerActions = true;
+                }
+                mTouchState.reset();
+                if (maskedAction == AMOTION_EVENT_ACTION_HOVER_ENTER
+                        || maskedAction == AMOTION_EVENT_ACTION_HOVER_MOVE) {
+                    mTouchState.deviceId = entry->deviceId;
+                    mTouchState.source = entry->source;
+                    mTouchState.displayId = displayId;
+                }
+            } else if (maskedAction == AMOTION_EVENT_ACTION_UP
+                    || maskedAction == AMOTION_EVENT_ACTION_CANCEL) {
+                // All pointers up or canceled.
+                mTouchState.reset();
+            } else if (maskedAction == AMOTION_EVENT_ACTION_DOWN) {
+                // First pointer went down.
+                if (mTouchState.down) {
+#if DEBUG_FOCUS
+                    ALOGD("Conflicting pointer actions: Down received while already down.");
+#endif
+                    *outConflictingPointerActions = true;
+                }
+                mTouchState.copyFrom(mTempTouchState);
+            } else if (maskedAction == AMOTION_EVENT_ACTION_POINTER_UP) {
+                // One pointer went up.
+                if (isSplit) {
+                    int32_t pointerIndex = getMotionEventActionPointerIndex(action);
+                    uint32_t pointerId = entry->pointerProperties[pointerIndex].id;
+
+                    for (size_t i = 0; i < mTempTouchState.windows.size(); ) {
+                        TouchedWindow& touchedWindow = mTempTouchState.windows.editItemAt(i);
+                        if (touchedWindow.targetFlags & InputTarget::FLAG_SPLIT) {
+                            touchedWindow.pointerIds.clearBit(pointerId);
+                            if (touchedWindow.pointerIds.isEmpty()) {
+                                mTempTouchState.windows.removeAt(i);
+                                continue;
+                            }
+                        }
+                        i += 1;
+                    }
+                }
+                mTouchState.copyFrom(mTempTouchState);
+            } else if (maskedAction == AMOTION_EVENT_ACTION_SCROLL) {
+                // Discard temporary touch state since it was only valid for this action.
+            } else {
+                // Save changes to touch state as-is for all other actions.
+                mTouchState.copyFrom(mTempTouchState);
+            }
+
+            // Update hover state.
+            mLastHoverWindowHandle = newHoverWindowHandle;
+        }
+    } else {
+#if DEBUG_FOCUS
+        ALOGD("Not updating touch focus because injection was denied.");
+#endif
+    }
+
+Unresponsive:
+    // Reset temporary touch state to ensure we release unnecessary references to input channels.
+    mTempTouchState.reset();
+
+    nsecs_t timeSpentWaitingForApplication = getTimeSpentWaitingForApplicationLocked(currentTime);
+    updateDispatchStatisticsLocked(currentTime, entry,
+            injectionResult, timeSpentWaitingForApplication);
+#if DEBUG_FOCUS
+    ALOGD("findTouchedWindow finished: injectionResult=%d, injectionPermission=%d, "
+            "timeSpentWaitingForApplication=%0.1fms",
+            injectionResult, injectionPermission, timeSpentWaitingForApplication / 1000000.0);
+#endif
+    return injectionResult;
+}
+
+void InputDispatcher::addWindowTargetLocked(const sp<InputWindowHandle>& windowHandle,
+        int32_t targetFlags, BitSet32 pointerIds, Vector<InputTarget>& inputTargets) {
+    inputTargets.push();
+
+    const InputWindowInfo* windowInfo = windowHandle->getInfo();
+    InputTarget& target = inputTargets.editTop();
+    target.inputChannel = windowInfo->inputChannel;
+    target.flags = targetFlags;
+    target.xOffset = - windowInfo->frameLeft;
+    target.yOffset = - windowInfo->frameTop;
+    target.scaleFactor = windowInfo->scaleFactor;
+    target.pointerIds = pointerIds;
+}
+
+void InputDispatcher::addMonitoringTargetsLocked(Vector<InputTarget>& inputTargets) {
+    for (size_t i = 0; i < mMonitoringChannels.size(); i++) {
+        inputTargets.push();
+
+        InputTarget& target = inputTargets.editTop();
+        target.inputChannel = mMonitoringChannels[i];
+        target.flags = InputTarget::FLAG_DISPATCH_AS_IS;
+        target.xOffset = 0;
+        target.yOffset = 0;
+        target.pointerIds.clear();
+        target.scaleFactor = 1.0f;
+    }
+}
+
+bool InputDispatcher::checkInjectionPermission(const sp<InputWindowHandle>& windowHandle,
+        const InjectionState* injectionState) {
+    if (injectionState
+            && (windowHandle == NULL
+                    || windowHandle->getInfo()->ownerUid != injectionState->injectorUid)
+            && !hasInjectionPermission(injectionState->injectorPid, injectionState->injectorUid)) {
+        if (windowHandle != NULL) {
+            ALOGW("Permission denied: injecting event from pid %d uid %d to window %s "
+                    "owned by uid %d",
+                    injectionState->injectorPid, injectionState->injectorUid,
+                    windowHandle->getName().string(),
+                    windowHandle->getInfo()->ownerUid);
+        } else {
+            ALOGW("Permission denied: injecting event from pid %d uid %d",
+                    injectionState->injectorPid, injectionState->injectorUid);
+        }
+        return false;
+    }
+    return true;
+}
+
+bool InputDispatcher::isWindowObscuredAtPointLocked(
+        const sp<InputWindowHandle>& windowHandle, int32_t x, int32_t y) const {
+    int32_t displayId = windowHandle->getInfo()->displayId;
+    size_t numWindows = mWindowHandles.size();
+    for (size_t i = 0; i < numWindows; i++) {
+        sp<InputWindowHandle> otherHandle = mWindowHandles.itemAt(i);
+        if (otherHandle == windowHandle) {
+            break;
+        }
+
+        const InputWindowInfo* otherInfo = otherHandle->getInfo();
+        if (otherInfo->displayId == displayId
+                && otherInfo->visible && !otherInfo->isTrustedOverlay()
+                && otherInfo->frameContainsPoint(x, y)) {
+            return true;
+        }
+    }
+    return false;
+}
+
+bool InputDispatcher::isWindowReadyForMoreInputLocked(nsecs_t currentTime,
+        const sp<InputWindowHandle>& windowHandle, const EventEntry* eventEntry) {
+    ssize_t connectionIndex = getConnectionIndexLocked(windowHandle->getInputChannel());
+    if (connectionIndex >= 0) {
+        sp<Connection> connection = mConnectionsByFd.valueAt(connectionIndex);
+        if (connection->inputPublisherBlocked) {
+            return false;
+        }
+        if (eventEntry->type == EventEntry::TYPE_KEY) {
+            // If the event is a key event, then we must wait for all previous events to
+            // complete before delivering it because previous events may have the
+            // side-effect of transferring focus to a different window and we want to
+            // ensure that the following keys are sent to the new window.
+            //
+            // Suppose the user touches a button in a window then immediately presses "A".
+            // If the button causes a pop-up window to appear then we want to ensure that
+            // the "A" key is delivered to the new pop-up window.  This is because users
+            // often anticipate pending UI changes when typing on a keyboard.
+            // To obtain this behavior, we must serialize key events with respect to all
+            // prior input events.
+            return connection->outboundQueue.isEmpty()
+                    && connection->waitQueue.isEmpty();
+        }
+        // Touch events can always be sent to a window immediately because the user intended
+        // to touch whatever was visible at the time.  Even if focus changes or a new
+        // window appears moments later, the touch event was meant to be delivered to
+        // whatever window happened to be on screen at the time.
+        //
+        // Generic motion events, such as trackball or joystick events are a little trickier.
+        // Like key events, generic motion events are delivered to the focused window.
+        // Unlike key events, generic motion events don't tend to transfer focus to other
+        // windows and it is not important for them to be serialized.  So we prefer to deliver
+        // generic motion events as soon as possible to improve efficiency and reduce lag
+        // through batching.
+        //
+        // The one case where we pause input event delivery is when the wait queue is piling
+        // up with lots of events because the application is not responding.
+        // This condition ensures that ANRs are detected reliably.
+        if (!connection->waitQueue.isEmpty()
+                && currentTime >= connection->waitQueue.head->eventEntry->eventTime
+                        + STREAM_AHEAD_EVENT_TIMEOUT) {
+            return false;
+        }
+    }
+    return true;
+}
+
+String8 InputDispatcher::getApplicationWindowLabelLocked(
+        const sp<InputApplicationHandle>& applicationHandle,
+        const sp<InputWindowHandle>& windowHandle) {
+    if (applicationHandle != NULL) {
+        if (windowHandle != NULL) {
+            String8 label(applicationHandle->getName());
+            label.append(" - ");
+            label.append(windowHandle->getName());
+            return label;
+        } else {
+            return applicationHandle->getName();
+        }
+    } else if (windowHandle != NULL) {
+        return windowHandle->getName();
+    } else {
+        return String8("<unknown application or window>");
+    }
+}
+
+void InputDispatcher::pokeUserActivityLocked(const EventEntry* eventEntry) {
+    if (mFocusedWindowHandle != NULL) {
+        const InputWindowInfo* info = mFocusedWindowHandle->getInfo();
+        if (info->inputFeatures & InputWindowInfo::INPUT_FEATURE_DISABLE_USER_ACTIVITY) {
+#if DEBUG_DISPATCH_CYCLE
+            ALOGD("Not poking user activity: disabled by window '%s'.", info->name.string());
+#endif
+            return;
+        }
+    }
+
+    int32_t eventType = USER_ACTIVITY_EVENT_OTHER;
+    switch (eventEntry->type) {
+    case EventEntry::TYPE_MOTION: {
+        const MotionEntry* motionEntry = static_cast<const MotionEntry*>(eventEntry);
+        if (motionEntry->action == AMOTION_EVENT_ACTION_CANCEL) {
+            return;
+        }
+
+        if (MotionEvent::isTouchEvent(motionEntry->source, motionEntry->action)) {
+            eventType = USER_ACTIVITY_EVENT_TOUCH;
+        }
+        break;
+    }
+    case EventEntry::TYPE_KEY: {
+        const KeyEntry* keyEntry = static_cast<const KeyEntry*>(eventEntry);
+        if (keyEntry->flags & AKEY_EVENT_FLAG_CANCELED) {
+            return;
+        }
+        eventType = USER_ACTIVITY_EVENT_BUTTON;
+        break;
+    }
+    }
+
+    CommandEntry* commandEntry = postCommandLocked(
+            & InputDispatcher::doPokeUserActivityLockedInterruptible);
+    commandEntry->eventTime = eventEntry->eventTime;
+    commandEntry->userActivityEventType = eventType;
+}
+
+void InputDispatcher::prepareDispatchCycleLocked(nsecs_t currentTime,
+        const sp<Connection>& connection, EventEntry* eventEntry, const InputTarget* inputTarget) {
+#if DEBUG_DISPATCH_CYCLE
+    ALOGD("channel '%s' ~ prepareDispatchCycle - flags=0x%08x, "
+            "xOffset=%f, yOffset=%f, scaleFactor=%f, "
+            "pointerIds=0x%x",
+            connection->getInputChannelName(), inputTarget->flags,
+            inputTarget->xOffset, inputTarget->yOffset,
+            inputTarget->scaleFactor, inputTarget->pointerIds.value);
+#endif
+
+    // Skip this event if the connection status is not normal.
+    // We don't want to enqueue additional outbound events if the connection is broken.
+    if (connection->status != Connection::STATUS_NORMAL) {
+#if DEBUG_DISPATCH_CYCLE
+        ALOGD("channel '%s' ~ Dropping event because the channel status is %s",
+                connection->getInputChannelName(), connection->getStatusLabel());
+#endif
+        return;
+    }
+
+    // Split a motion event if needed.
+    if (inputTarget->flags & InputTarget::FLAG_SPLIT) {
+        ALOG_ASSERT(eventEntry->type == EventEntry::TYPE_MOTION);
+
+        MotionEntry* originalMotionEntry = static_cast<MotionEntry*>(eventEntry);
+        if (inputTarget->pointerIds.count() != originalMotionEntry->pointerCount) {
+            MotionEntry* splitMotionEntry = splitMotionEvent(
+                    originalMotionEntry, inputTarget->pointerIds);
+            if (!splitMotionEntry) {
+                return; // split event was dropped
+            }
+#if DEBUG_FOCUS
+            ALOGD("channel '%s' ~ Split motion event.",
+                    connection->getInputChannelName());
+            logOutboundMotionDetailsLocked("  ", splitMotionEntry);
+#endif
+            enqueueDispatchEntriesLocked(currentTime, connection,
+                    splitMotionEntry, inputTarget);
+            splitMotionEntry->release();
+            return;
+        }
+    }
+
+    // Not splitting.  Enqueue dispatch entries for the event as is.
+    enqueueDispatchEntriesLocked(currentTime, connection, eventEntry, inputTarget);
+}
+
+void InputDispatcher::enqueueDispatchEntriesLocked(nsecs_t currentTime,
+        const sp<Connection>& connection, EventEntry* eventEntry, const InputTarget* inputTarget) {
+    bool wasEmpty = connection->outboundQueue.isEmpty();
+
+    // Enqueue dispatch entries for the requested modes.
+    enqueueDispatchEntryLocked(connection, eventEntry, inputTarget,
+            InputTarget::FLAG_DISPATCH_AS_HOVER_EXIT);
+    enqueueDispatchEntryLocked(connection, eventEntry, inputTarget,
+            InputTarget::FLAG_DISPATCH_AS_OUTSIDE);
+    enqueueDispatchEntryLocked(connection, eventEntry, inputTarget,
+            InputTarget::FLAG_DISPATCH_AS_HOVER_ENTER);
+    enqueueDispatchEntryLocked(connection, eventEntry, inputTarget,
+            InputTarget::FLAG_DISPATCH_AS_IS);
+    enqueueDispatchEntryLocked(connection, eventEntry, inputTarget,
+            InputTarget::FLAG_DISPATCH_AS_SLIPPERY_EXIT);
+    enqueueDispatchEntryLocked(connection, eventEntry, inputTarget,
+            InputTarget::FLAG_DISPATCH_AS_SLIPPERY_ENTER);
+
+    // If the outbound queue was previously empty, start the dispatch cycle going.
+    if (wasEmpty && !connection->outboundQueue.isEmpty()) {
+        startDispatchCycleLocked(currentTime, connection);
+    }
+}
+
+void InputDispatcher::enqueueDispatchEntryLocked(
+        const sp<Connection>& connection, EventEntry* eventEntry, const InputTarget* inputTarget,
+        int32_t dispatchMode) {
+    int32_t inputTargetFlags = inputTarget->flags;
+    if (!(inputTargetFlags & dispatchMode)) {
+        return;
+    }
+    inputTargetFlags = (inputTargetFlags & ~InputTarget::FLAG_DISPATCH_MASK) | dispatchMode;
+
+    // This is a new event.
+    // Enqueue a new dispatch entry onto the outbound queue for this connection.
+    DispatchEntry* dispatchEntry = new DispatchEntry(eventEntry, // increments ref
+            inputTargetFlags, inputTarget->xOffset, inputTarget->yOffset,
+            inputTarget->scaleFactor);
+
+    // Apply target flags and update the connection's input state.
+    switch (eventEntry->type) {
+    case EventEntry::TYPE_KEY: {
+        KeyEntry* keyEntry = static_cast<KeyEntry*>(eventEntry);
+        dispatchEntry->resolvedAction = keyEntry->action;
+        dispatchEntry->resolvedFlags = keyEntry->flags;
+
+        if (!connection->inputState.trackKey(keyEntry,
+                dispatchEntry->resolvedAction, dispatchEntry->resolvedFlags)) {
+#if DEBUG_DISPATCH_CYCLE
+            ALOGD("channel '%s' ~ enqueueDispatchEntryLocked: skipping inconsistent key event",
+                    connection->getInputChannelName());
+#endif
+            delete dispatchEntry;
+            return; // skip the inconsistent event
+        }
+        break;
+    }
+
+    case EventEntry::TYPE_MOTION: {
+        MotionEntry* motionEntry = static_cast<MotionEntry*>(eventEntry);
+        if (dispatchMode & InputTarget::FLAG_DISPATCH_AS_OUTSIDE) {
+            dispatchEntry->resolvedAction = AMOTION_EVENT_ACTION_OUTSIDE;
+        } else if (dispatchMode & InputTarget::FLAG_DISPATCH_AS_HOVER_EXIT) {
+            dispatchEntry->resolvedAction = AMOTION_EVENT_ACTION_HOVER_EXIT;
+        } else if (dispatchMode & InputTarget::FLAG_DISPATCH_AS_HOVER_ENTER) {
+            dispatchEntry->resolvedAction = AMOTION_EVENT_ACTION_HOVER_ENTER;
+        } else if (dispatchMode & InputTarget::FLAG_DISPATCH_AS_SLIPPERY_EXIT) {
+            dispatchEntry->resolvedAction = AMOTION_EVENT_ACTION_CANCEL;
+        } else if (dispatchMode & InputTarget::FLAG_DISPATCH_AS_SLIPPERY_ENTER) {
+            dispatchEntry->resolvedAction = AMOTION_EVENT_ACTION_DOWN;
+        } else {
+            dispatchEntry->resolvedAction = motionEntry->action;
+        }
+        if (dispatchEntry->resolvedAction == AMOTION_EVENT_ACTION_HOVER_MOVE
+                && !connection->inputState.isHovering(
+                        motionEntry->deviceId, motionEntry->source, motionEntry->displayId)) {
+#if DEBUG_DISPATCH_CYCLE
+        ALOGD("channel '%s' ~ enqueueDispatchEntryLocked: filling in missing hover enter event",
+                connection->getInputChannelName());
+#endif
+            dispatchEntry->resolvedAction = AMOTION_EVENT_ACTION_HOVER_ENTER;
+        }
+
+        dispatchEntry->resolvedFlags = motionEntry->flags;
+        if (dispatchEntry->targetFlags & InputTarget::FLAG_WINDOW_IS_OBSCURED) {
+            dispatchEntry->resolvedFlags |= AMOTION_EVENT_FLAG_WINDOW_IS_OBSCURED;
+        }
+
+        if (!connection->inputState.trackMotion(motionEntry,
+                dispatchEntry->resolvedAction, dispatchEntry->resolvedFlags)) {
+#if DEBUG_DISPATCH_CYCLE
+            ALOGD("channel '%s' ~ enqueueDispatchEntryLocked: skipping inconsistent motion event",
+                    connection->getInputChannelName());
+#endif
+            delete dispatchEntry;
+            return; // skip the inconsistent event
+        }
+        break;
+    }
+    }
+
+    // Remember that we are waiting for this dispatch to complete.
+    if (dispatchEntry->hasForegroundTarget()) {
+        incrementPendingForegroundDispatchesLocked(eventEntry);
+    }
+
+    // Enqueue the dispatch entry.
+    connection->outboundQueue.enqueueAtTail(dispatchEntry);
+    traceOutboundQueueLengthLocked(connection);
+}
+
+void InputDispatcher::startDispatchCycleLocked(nsecs_t currentTime,
+        const sp<Connection>& connection) {
+#if DEBUG_DISPATCH_CYCLE
+    ALOGD("channel '%s' ~ startDispatchCycle",
+            connection->getInputChannelName());
+#endif
+
+    while (connection->status == Connection::STATUS_NORMAL
+            && !connection->outboundQueue.isEmpty()) {
+        DispatchEntry* dispatchEntry = connection->outboundQueue.head;
+        dispatchEntry->deliveryTime = currentTime;
+
+        // Publish the event.
+        status_t status;
+        EventEntry* eventEntry = dispatchEntry->eventEntry;
+        switch (eventEntry->type) {
+        case EventEntry::TYPE_KEY: {
+            KeyEntry* keyEntry = static_cast<KeyEntry*>(eventEntry);
+
+            // Publish the key event.
+            status = connection->inputPublisher.publishKeyEvent(dispatchEntry->seq,
+                    keyEntry->deviceId, keyEntry->source,
+                    dispatchEntry->resolvedAction, dispatchEntry->resolvedFlags,
+                    keyEntry->keyCode, keyEntry->scanCode,
+                    keyEntry->metaState, keyEntry->repeatCount, keyEntry->downTime,
+                    keyEntry->eventTime);
+            break;
+        }
+
+        case EventEntry::TYPE_MOTION: {
+            MotionEntry* motionEntry = static_cast<MotionEntry*>(eventEntry);
+
+            PointerCoords scaledCoords[MAX_POINTERS];
+            const PointerCoords* usingCoords = motionEntry->pointerCoords;
+
+            // Set the X and Y offset depending on the input source.
+            float xOffset, yOffset, scaleFactor;
+            if ((motionEntry->source & AINPUT_SOURCE_CLASS_POINTER)
+                    && !(dispatchEntry->targetFlags & InputTarget::FLAG_ZERO_COORDS)) {
+                scaleFactor = dispatchEntry->scaleFactor;
+                xOffset = dispatchEntry->xOffset * scaleFactor;
+                yOffset = dispatchEntry->yOffset * scaleFactor;
+                if (scaleFactor != 1.0f) {
+                    for (size_t i = 0; i < motionEntry->pointerCount; i++) {
+                        scaledCoords[i] = motionEntry->pointerCoords[i];
+                        scaledCoords[i].scale(scaleFactor);
+                    }
+                    usingCoords = scaledCoords;
+                }
+            } else {
+                xOffset = 0.0f;
+                yOffset = 0.0f;
+                scaleFactor = 1.0f;
+
+                // We don't want the dispatch target to know.
+                if (dispatchEntry->targetFlags & InputTarget::FLAG_ZERO_COORDS) {
+                    for (size_t i = 0; i < motionEntry->pointerCount; i++) {
+                        scaledCoords[i].clear();
+                    }
+                    usingCoords = scaledCoords;
+                }
+            }
+
+            // Publish the motion event.
+            status = connection->inputPublisher.publishMotionEvent(dispatchEntry->seq,
+                    motionEntry->deviceId, motionEntry->source,
+                    dispatchEntry->resolvedAction, dispatchEntry->resolvedFlags,
+                    motionEntry->edgeFlags, motionEntry->metaState, motionEntry->buttonState,
+                    xOffset, yOffset,
+                    motionEntry->xPrecision, motionEntry->yPrecision,
+                    motionEntry->downTime, motionEntry->eventTime,
+                    motionEntry->pointerCount, motionEntry->pointerProperties,
+                    usingCoords);
+            break;
+        }
+
+        default:
+            ALOG_ASSERT(false);
+            return;
+        }
+
+        // Check the result.
+        if (status) {
+            if (status == WOULD_BLOCK) {
+                if (connection->waitQueue.isEmpty()) {
+                    ALOGE("channel '%s' ~ Could not publish event because the pipe is full. "
+                            "This is unexpected because the wait queue is empty, so the pipe "
+                            "should be empty and we shouldn't have any problems writing an "
+                            "event to it, status=%d", connection->getInputChannelName(), status);
+                    abortBrokenDispatchCycleLocked(currentTime, connection, true /*notify*/);
+                } else {
+                    // Pipe is full and we are waiting for the app to finish process some events
+                    // before sending more events to it.
+#if DEBUG_DISPATCH_CYCLE
+                    ALOGD("channel '%s' ~ Could not publish event because the pipe is full, "
+                            "waiting for the application to catch up",
+                            connection->getInputChannelName());
+#endif
+                    connection->inputPublisherBlocked = true;
+                }
+            } else {
+                ALOGE("channel '%s' ~ Could not publish event due to an unexpected error, "
+                        "status=%d", connection->getInputChannelName(), status);
+                abortBrokenDispatchCycleLocked(currentTime, connection, true /*notify*/);
+            }
+            return;
+        }
+
+        // Re-enqueue the event on the wait queue.
+        connection->outboundQueue.dequeue(dispatchEntry);
+        traceOutboundQueueLengthLocked(connection);
+        connection->waitQueue.enqueueAtTail(dispatchEntry);
+        traceWaitQueueLengthLocked(connection);
+    }
+}
+
+void InputDispatcher::finishDispatchCycleLocked(nsecs_t currentTime,
+        const sp<Connection>& connection, uint32_t seq, bool handled) {
+#if DEBUG_DISPATCH_CYCLE
+    ALOGD("channel '%s' ~ finishDispatchCycle - seq=%u, handled=%s",
+            connection->getInputChannelName(), seq, toString(handled));
+#endif
+
+    connection->inputPublisherBlocked = false;
+
+    if (connection->status == Connection::STATUS_BROKEN
+            || connection->status == Connection::STATUS_ZOMBIE) {
+        return;
+    }
+
+    // Notify other system components and prepare to start the next dispatch cycle.
+    onDispatchCycleFinishedLocked(currentTime, connection, seq, handled);
+}
+
+void InputDispatcher::abortBrokenDispatchCycleLocked(nsecs_t currentTime,
+        const sp<Connection>& connection, bool notify) {
+#if DEBUG_DISPATCH_CYCLE
+    ALOGD("channel '%s' ~ abortBrokenDispatchCycle - notify=%s",
+            connection->getInputChannelName(), toString(notify));
+#endif
+
+    // Clear the dispatch queues.
+    drainDispatchQueueLocked(&connection->outboundQueue);
+    traceOutboundQueueLengthLocked(connection);
+    drainDispatchQueueLocked(&connection->waitQueue);
+    traceWaitQueueLengthLocked(connection);
+
+    // The connection appears to be unrecoverably broken.
+    // Ignore already broken or zombie connections.
+    if (connection->status == Connection::STATUS_NORMAL) {
+        connection->status = Connection::STATUS_BROKEN;
+
+        if (notify) {
+            // Notify other system components.
+            onDispatchCycleBrokenLocked(currentTime, connection);
+        }
+    }
+}
+
+void InputDispatcher::drainDispatchQueueLocked(Queue<DispatchEntry>* queue) {
+    while (!queue->isEmpty()) {
+        DispatchEntry* dispatchEntry = queue->dequeueAtHead();
+        releaseDispatchEntryLocked(dispatchEntry);
+    }
+}
+
+void InputDispatcher::releaseDispatchEntryLocked(DispatchEntry* dispatchEntry) {
+    if (dispatchEntry->hasForegroundTarget()) {
+        decrementPendingForegroundDispatchesLocked(dispatchEntry->eventEntry);
+    }
+    delete dispatchEntry;
+}
+
+int InputDispatcher::handleReceiveCallback(int fd, int events, void* data) {
+    InputDispatcher* d = static_cast<InputDispatcher*>(data);
+
+    { // acquire lock
+        AutoMutex _l(d->mLock);
+
+        ssize_t connectionIndex = d->mConnectionsByFd.indexOfKey(fd);
+        if (connectionIndex < 0) {
+            ALOGE("Received spurious receive callback for unknown input channel.  "
+                    "fd=%d, events=0x%x", fd, events);
+            return 0; // remove the callback
+        }
+
+        bool notify;
+        sp<Connection> connection = d->mConnectionsByFd.valueAt(connectionIndex);
+        if (!(events & (ALOOPER_EVENT_ERROR | ALOOPER_EVENT_HANGUP))) {
+            if (!(events & ALOOPER_EVENT_INPUT)) {
+                ALOGW("channel '%s' ~ Received spurious callback for unhandled poll event.  "
+                        "events=0x%x", connection->getInputChannelName(), events);
+                return 1;
+            }
+
+            nsecs_t currentTime = now();
+            bool gotOne = false;
+            status_t status;
+            for (;;) {
+                uint32_t seq;
+                bool handled;
+                status = connection->inputPublisher.receiveFinishedSignal(&seq, &handled);
+                if (status) {
+                    break;
+                }
+                d->finishDispatchCycleLocked(currentTime, connection, seq, handled);
+                gotOne = true;
+            }
+            if (gotOne) {
+                d->runCommandsLockedInterruptible();
+                if (status == WOULD_BLOCK) {
+                    return 1;
+                }
+            }
+
+            notify = status != DEAD_OBJECT || !connection->monitor;
+            if (notify) {
+                ALOGE("channel '%s' ~ Failed to receive finished signal.  status=%d",
+                        connection->getInputChannelName(), status);
+            }
+        } else {
+            // Monitor channels are never explicitly unregistered.
+            // We do it automatically when the remote endpoint is closed so don't warn
+            // about them.
+            notify = !connection->monitor;
+            if (notify) {
+                ALOGW("channel '%s' ~ Consumer closed input channel or an error occurred.  "
+                        "events=0x%x", connection->getInputChannelName(), events);
+            }
+        }
+
+        // Unregister the channel.
+        d->unregisterInputChannelLocked(connection->inputChannel, notify);
+        return 0; // remove the callback
+    } // release lock
+}
+
+void InputDispatcher::synthesizeCancelationEventsForAllConnectionsLocked(
+        const CancelationOptions& options) {
+    for (size_t i = 0; i < mConnectionsByFd.size(); i++) {
+        synthesizeCancelationEventsForConnectionLocked(
+                mConnectionsByFd.valueAt(i), options);
+    }
+}
+
+void InputDispatcher::synthesizeCancelationEventsForInputChannelLocked(
+        const sp<InputChannel>& channel, const CancelationOptions& options) {
+    ssize_t index = getConnectionIndexLocked(channel);
+    if (index >= 0) {
+        synthesizeCancelationEventsForConnectionLocked(
+                mConnectionsByFd.valueAt(index), options);
+    }
+}
+
+void InputDispatcher::synthesizeCancelationEventsForConnectionLocked(
+        const sp<Connection>& connection, const CancelationOptions& options) {
+    if (connection->status == Connection::STATUS_BROKEN) {
+        return;
+    }
+
+    nsecs_t currentTime = now();
+
+    Vector<EventEntry*> cancelationEvents;
+    connection->inputState.synthesizeCancelationEvents(currentTime,
+            cancelationEvents, options);
+
+    if (!cancelationEvents.isEmpty()) {
+#if DEBUG_OUTBOUND_EVENT_DETAILS
+        ALOGD("channel '%s' ~ Synthesized %d cancelation events to bring channel back in sync "
+                "with reality: %s, mode=%d.",
+                connection->getInputChannelName(), cancelationEvents.size(),
+                options.reason, options.mode);
+#endif
+        for (size_t i = 0; i < cancelationEvents.size(); i++) {
+            EventEntry* cancelationEventEntry = cancelationEvents.itemAt(i);
+            switch (cancelationEventEntry->type) {
+            case EventEntry::TYPE_KEY:
+                logOutboundKeyDetailsLocked("cancel - ",
+                        static_cast<KeyEntry*>(cancelationEventEntry));
+                break;
+            case EventEntry::TYPE_MOTION:
+                logOutboundMotionDetailsLocked("cancel - ",
+                        static_cast<MotionEntry*>(cancelationEventEntry));
+                break;
+            }
+
+            InputTarget target;
+            sp<InputWindowHandle> windowHandle = getWindowHandleLocked(connection->inputChannel);
+            if (windowHandle != NULL) {
+                const InputWindowInfo* windowInfo = windowHandle->getInfo();
+                target.xOffset = -windowInfo->frameLeft;
+                target.yOffset = -windowInfo->frameTop;
+                target.scaleFactor = windowInfo->scaleFactor;
+            } else {
+                target.xOffset = 0;
+                target.yOffset = 0;
+                target.scaleFactor = 1.0f;
+            }
+            target.inputChannel = connection->inputChannel;
+            target.flags = InputTarget::FLAG_DISPATCH_AS_IS;
+
+            enqueueDispatchEntryLocked(connection, cancelationEventEntry, // increments ref
+                    &target, InputTarget::FLAG_DISPATCH_AS_IS);
+
+            cancelationEventEntry->release();
+        }
+
+        startDispatchCycleLocked(currentTime, connection);
+    }
+}
+
+InputDispatcher::MotionEntry*
+InputDispatcher::splitMotionEvent(const MotionEntry* originalMotionEntry, BitSet32 pointerIds) {
+    ALOG_ASSERT(pointerIds.value != 0);
+
+    PointerProperties splitPointerProperties[MAX_POINTERS];
+    PointerCoords splitPointerCoords[MAX_POINTERS];
+
+    uint32_t originalPointerCount = originalMotionEntry->pointerCount;
+    uint32_t splitPointerCount = 0;
+
+    for (uint32_t originalPointerIndex = 0; originalPointerIndex < originalPointerCount;
+            originalPointerIndex++) {
+        const PointerProperties& pointerProperties =
+                originalMotionEntry->pointerProperties[originalPointerIndex];
+        uint32_t pointerId = uint32_t(pointerProperties.id);
+        if (pointerIds.hasBit(pointerId)) {
+            splitPointerProperties[splitPointerCount].copyFrom(pointerProperties);
+            splitPointerCoords[splitPointerCount].copyFrom(
+                    originalMotionEntry->pointerCoords[originalPointerIndex]);
+            splitPointerCount += 1;
+        }
+    }
+
+    if (splitPointerCount != pointerIds.count()) {
+        // This is bad.  We are missing some of the pointers that we expected to deliver.
+        // Most likely this indicates that we received an ACTION_MOVE events that has
+        // different pointer ids than we expected based on the previous ACTION_DOWN
+        // or ACTION_POINTER_DOWN events that caused us to decide to split the pointers
+        // in this way.
+        ALOGW("Dropping split motion event because the pointer count is %d but "
+                "we expected there to be %d pointers.  This probably means we received "
+                "a broken sequence of pointer ids from the input device.",
+                splitPointerCount, pointerIds.count());
+        return NULL;
+    }
+
+    int32_t action = originalMotionEntry->action;
+    int32_t maskedAction = action & AMOTION_EVENT_ACTION_MASK;
+    if (maskedAction == AMOTION_EVENT_ACTION_POINTER_DOWN
+            || maskedAction == AMOTION_EVENT_ACTION_POINTER_UP) {
+        int32_t originalPointerIndex = getMotionEventActionPointerIndex(action);
+        const PointerProperties& pointerProperties =
+                originalMotionEntry->pointerProperties[originalPointerIndex];
+        uint32_t pointerId = uint32_t(pointerProperties.id);
+        if (pointerIds.hasBit(pointerId)) {
+            if (pointerIds.count() == 1) {
+                // The first/last pointer went down/up.
+                action = maskedAction == AMOTION_EVENT_ACTION_POINTER_DOWN
+                        ? AMOTION_EVENT_ACTION_DOWN : AMOTION_EVENT_ACTION_UP;
+            } else {
+                // A secondary pointer went down/up.
+                uint32_t splitPointerIndex = 0;
+                while (pointerId != uint32_t(splitPointerProperties[splitPointerIndex].id)) {
+                    splitPointerIndex += 1;
+                }
+                action = maskedAction | (splitPointerIndex
+                        << AMOTION_EVENT_ACTION_POINTER_INDEX_SHIFT);
+            }
+        } else {
+            // An unrelated pointer changed.
+            action = AMOTION_EVENT_ACTION_MOVE;
+        }
+    }
+
+    MotionEntry* splitMotionEntry = new MotionEntry(
+            originalMotionEntry->eventTime,
+            originalMotionEntry->deviceId,
+            originalMotionEntry->source,
+            originalMotionEntry->policyFlags,
+            action,
+            originalMotionEntry->flags,
+            originalMotionEntry->metaState,
+            originalMotionEntry->buttonState,
+            originalMotionEntry->edgeFlags,
+            originalMotionEntry->xPrecision,
+            originalMotionEntry->yPrecision,
+            originalMotionEntry->downTime,
+            originalMotionEntry->displayId,
+            splitPointerCount, splitPointerProperties, splitPointerCoords);
+
+    if (originalMotionEntry->injectionState) {
+        splitMotionEntry->injectionState = originalMotionEntry->injectionState;
+        splitMotionEntry->injectionState->refCount += 1;
+    }
+
+    return splitMotionEntry;
+}
+
+void InputDispatcher::notifyConfigurationChanged(const NotifyConfigurationChangedArgs* args) {
+#if DEBUG_INBOUND_EVENT_DETAILS
+    ALOGD("notifyConfigurationChanged - eventTime=%lld", args->eventTime);
+#endif
+
+    bool needWake;
+    { // acquire lock
+        AutoMutex _l(mLock);
+
+        ConfigurationChangedEntry* newEntry = new ConfigurationChangedEntry(args->eventTime);
+        needWake = enqueueInboundEventLocked(newEntry);
+    } // release lock
+
+    if (needWake) {
+        mLooper->wake();
+    }
+}
+
+void InputDispatcher::notifyKey(const NotifyKeyArgs* args) {
+#if DEBUG_INBOUND_EVENT_DETAILS
+    ALOGD("notifyKey - eventTime=%lld, deviceId=%d, source=0x%x, policyFlags=0x%x, action=0x%x, "
+            "flags=0x%x, keyCode=0x%x, scanCode=0x%x, metaState=0x%x, downTime=%lld",
+            args->eventTime, args->deviceId, args->source, args->policyFlags,
+            args->action, args->flags, args->keyCode, args->scanCode,
+            args->metaState, args->downTime);
+#endif
+    if (!validateKeyEvent(args->action)) {
+        return;
+    }
+
+    uint32_t policyFlags = args->policyFlags;
+    int32_t flags = args->flags;
+    int32_t metaState = args->metaState;
+    if ((policyFlags & POLICY_FLAG_VIRTUAL) || (flags & AKEY_EVENT_FLAG_VIRTUAL_HARD_KEY)) {
+        policyFlags |= POLICY_FLAG_VIRTUAL;
+        flags |= AKEY_EVENT_FLAG_VIRTUAL_HARD_KEY;
+    }
+    if (policyFlags & POLICY_FLAG_ALT) {
+        metaState |= AMETA_ALT_ON | AMETA_ALT_LEFT_ON;
+    }
+    if (policyFlags & POLICY_FLAG_ALT_GR) {
+        metaState |= AMETA_ALT_ON | AMETA_ALT_RIGHT_ON;
+    }
+    if (policyFlags & POLICY_FLAG_SHIFT) {
+        metaState |= AMETA_SHIFT_ON | AMETA_SHIFT_LEFT_ON;
+    }
+    if (policyFlags & POLICY_FLAG_CAPS_LOCK) {
+        metaState |= AMETA_CAPS_LOCK_ON;
+    }
+    if (policyFlags & POLICY_FLAG_FUNCTION) {
+        metaState |= AMETA_FUNCTION_ON;
+    }
+
+    policyFlags |= POLICY_FLAG_TRUSTED;
+
+    KeyEvent event;
+    event.initialize(args->deviceId, args->source, args->action,
+            flags, args->keyCode, args->scanCode, metaState, 0,
+            args->downTime, args->eventTime);
+
+    mPolicy->interceptKeyBeforeQueueing(&event, /*byref*/ policyFlags);
+
+    if (policyFlags & POLICY_FLAG_WOKE_HERE) {
+        flags |= AKEY_EVENT_FLAG_WOKE_HERE;
+    }
+
+    bool needWake;
+    { // acquire lock
+        mLock.lock();
+
+        if (shouldSendKeyToInputFilterLocked(args)) {
+            mLock.unlock();
+
+            policyFlags |= POLICY_FLAG_FILTERED;
+            if (!mPolicy->filterInputEvent(&event, policyFlags)) {
+                return; // event was consumed by the filter
+            }
+
+            mLock.lock();
+        }
+
+        int32_t repeatCount = 0;
+        KeyEntry* newEntry = new KeyEntry(args->eventTime,
+                args->deviceId, args->source, policyFlags,
+                args->action, flags, args->keyCode, args->scanCode,
+                metaState, repeatCount, args->downTime);
+
+        needWake = enqueueInboundEventLocked(newEntry);
+        mLock.unlock();
+    } // release lock
+
+    if (needWake) {
+        mLooper->wake();
+    }
+}
+
+bool InputDispatcher::shouldSendKeyToInputFilterLocked(const NotifyKeyArgs* args) {
+    return mInputFilterEnabled;
+}
+
+void InputDispatcher::notifyMotion(const NotifyMotionArgs* args) {
+#if DEBUG_INBOUND_EVENT_DETAILS
+    ALOGD("notifyMotion - eventTime=%lld, deviceId=%d, source=0x%x, policyFlags=0x%x, "
+            "action=0x%x, flags=0x%x, metaState=0x%x, buttonState=0x%x, edgeFlags=0x%x, "
+            "xPrecision=%f, yPrecision=%f, downTime=%lld",
+            args->eventTime, args->deviceId, args->source, args->policyFlags,
+            args->action, args->flags, args->metaState, args->buttonState,
+            args->edgeFlags, args->xPrecision, args->yPrecision, args->downTime);
+    for (uint32_t i = 0; i < args->pointerCount; i++) {
+        ALOGD("  Pointer %d: id=%d, toolType=%d, "
+                "x=%f, y=%f, pressure=%f, size=%f, "
+                "touchMajor=%f, touchMinor=%f, toolMajor=%f, toolMinor=%f, "
+                "orientation=%f",
+                i, args->pointerProperties[i].id,
+                args->pointerProperties[i].toolType,
+                args->pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_X),
+                args->pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_Y),
+                args->pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_PRESSURE),
+                args->pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_SIZE),
+                args->pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_TOUCH_MAJOR),
+                args->pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_TOUCH_MINOR),
+                args->pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_TOOL_MAJOR),
+                args->pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_TOOL_MINOR),
+                args->pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_ORIENTATION));
+    }
+#endif
+    if (!validateMotionEvent(args->action, args->pointerCount, args->pointerProperties)) {
+        return;
+    }
+
+    uint32_t policyFlags = args->policyFlags;
+    policyFlags |= POLICY_FLAG_TRUSTED;
+    mPolicy->interceptMotionBeforeQueueing(args->eventTime, /*byref*/ policyFlags);
+
+    bool needWake;
+    { // acquire lock
+        mLock.lock();
+
+        if (shouldSendMotionToInputFilterLocked(args)) {
+            mLock.unlock();
+
+            MotionEvent event;
+            event.initialize(args->deviceId, args->source, args->action, args->flags,
+                    args->edgeFlags, args->metaState, args->buttonState, 0, 0,
+                    args->xPrecision, args->yPrecision,
+                    args->downTime, args->eventTime,
+                    args->pointerCount, args->pointerProperties, args->pointerCoords);
+
+            policyFlags |= POLICY_FLAG_FILTERED;
+            if (!mPolicy->filterInputEvent(&event, policyFlags)) {
+                return; // event was consumed by the filter
+            }
+
+            mLock.lock();
+        }
+
+        // Just enqueue a new motion event.
+        MotionEntry* newEntry = new MotionEntry(args->eventTime,
+                args->deviceId, args->source, policyFlags,
+                args->action, args->flags, args->metaState, args->buttonState,
+                args->edgeFlags, args->xPrecision, args->yPrecision, args->downTime,
+                args->displayId,
+                args->pointerCount, args->pointerProperties, args->pointerCoords);
+
+        needWake = enqueueInboundEventLocked(newEntry);
+        mLock.unlock();
+    } // release lock
+
+    if (needWake) {
+        mLooper->wake();
+    }
+}
+
+bool InputDispatcher::shouldSendMotionToInputFilterLocked(const NotifyMotionArgs* args) {
+    // TODO: support sending secondary display events to input filter
+    return mInputFilterEnabled && isMainDisplay(args->displayId);
+}
+
+void InputDispatcher::notifySwitch(const NotifySwitchArgs* args) {
+#if DEBUG_INBOUND_EVENT_DETAILS
+    ALOGD("notifySwitch - eventTime=%lld, policyFlags=0x%x, switchValues=0x%08x, switchMask=0x%08x",
+            args->eventTime, args->policyFlags,
+            args->switchValues, args->switchMask);
+#endif
+
+    uint32_t policyFlags = args->policyFlags;
+    policyFlags |= POLICY_FLAG_TRUSTED;
+    mPolicy->notifySwitch(args->eventTime,
+            args->switchValues, args->switchMask, policyFlags);
+}
+
+void InputDispatcher::notifyDeviceReset(const NotifyDeviceResetArgs* args) {
+#if DEBUG_INBOUND_EVENT_DETAILS
+    ALOGD("notifyDeviceReset - eventTime=%lld, deviceId=%d",
+            args->eventTime, args->deviceId);
+#endif
+
+    bool needWake;
+    { // acquire lock
+        AutoMutex _l(mLock);
+
+        DeviceResetEntry* newEntry = new DeviceResetEntry(args->eventTime, args->deviceId);
+        needWake = enqueueInboundEventLocked(newEntry);
+    } // release lock
+
+    if (needWake) {
+        mLooper->wake();
+    }
+}
+
+int32_t InputDispatcher::injectInputEvent(const InputEvent* event,
+        int32_t injectorPid, int32_t injectorUid, int32_t syncMode, int32_t timeoutMillis,
+        uint32_t policyFlags) {
+#if DEBUG_INBOUND_EVENT_DETAILS
+    ALOGD("injectInputEvent - eventType=%d, injectorPid=%d, injectorUid=%d, "
+            "syncMode=%d, timeoutMillis=%d, policyFlags=0x%08x",
+            event->getType(), injectorPid, injectorUid, syncMode, timeoutMillis, policyFlags);
+#endif
+
+    nsecs_t endTime = now() + milliseconds_to_nanoseconds(timeoutMillis);
+
+    policyFlags |= POLICY_FLAG_INJECTED;
+    if (hasInjectionPermission(injectorPid, injectorUid)) {
+        policyFlags |= POLICY_FLAG_TRUSTED;
+    }
+
+    EventEntry* firstInjectedEntry;
+    EventEntry* lastInjectedEntry;
+    switch (event->getType()) {
+    case AINPUT_EVENT_TYPE_KEY: {
+        const KeyEvent* keyEvent = static_cast<const KeyEvent*>(event);
+        int32_t action = keyEvent->getAction();
+        if (! validateKeyEvent(action)) {
+            return INPUT_EVENT_INJECTION_FAILED;
+        }
+
+        int32_t flags = keyEvent->getFlags();
+        if (flags & AKEY_EVENT_FLAG_VIRTUAL_HARD_KEY) {
+            policyFlags |= POLICY_FLAG_VIRTUAL;
+        }
+
+        if (!(policyFlags & POLICY_FLAG_FILTERED)) {
+            mPolicy->interceptKeyBeforeQueueing(keyEvent, /*byref*/ policyFlags);
+        }
+
+        if (policyFlags & POLICY_FLAG_WOKE_HERE) {
+            flags |= AKEY_EVENT_FLAG_WOKE_HERE;
+        }
+
+        mLock.lock();
+        firstInjectedEntry = new KeyEntry(keyEvent->getEventTime(),
+                keyEvent->getDeviceId(), keyEvent->getSource(),
+                policyFlags, action, flags,
+                keyEvent->getKeyCode(), keyEvent->getScanCode(), keyEvent->getMetaState(),
+                keyEvent->getRepeatCount(), keyEvent->getDownTime());
+        lastInjectedEntry = firstInjectedEntry;
+        break;
+    }
+
+    case AINPUT_EVENT_TYPE_MOTION: {
+        const MotionEvent* motionEvent = static_cast<const MotionEvent*>(event);
+        int32_t displayId = ADISPLAY_ID_DEFAULT;
+        int32_t action = motionEvent->getAction();
+        size_t pointerCount = motionEvent->getPointerCount();
+        const PointerProperties* pointerProperties = motionEvent->getPointerProperties();
+        if (! validateMotionEvent(action, pointerCount, pointerProperties)) {
+            return INPUT_EVENT_INJECTION_FAILED;
+        }
+
+        if (!(policyFlags & POLICY_FLAG_FILTERED)) {
+            nsecs_t eventTime = motionEvent->getEventTime();
+            mPolicy->interceptMotionBeforeQueueing(eventTime, /*byref*/ policyFlags);
+        }
+
+        mLock.lock();
+        const nsecs_t* sampleEventTimes = motionEvent->getSampleEventTimes();
+        const PointerCoords* samplePointerCoords = motionEvent->getSamplePointerCoords();
+        firstInjectedEntry = new MotionEntry(*sampleEventTimes,
+                motionEvent->getDeviceId(), motionEvent->getSource(), policyFlags,
+                action, motionEvent->getFlags(),
+                motionEvent->getMetaState(), motionEvent->getButtonState(),
+                motionEvent->getEdgeFlags(),
+                motionEvent->getXPrecision(), motionEvent->getYPrecision(),
+                motionEvent->getDownTime(), displayId,
+                uint32_t(pointerCount), pointerProperties, samplePointerCoords);
+        lastInjectedEntry = firstInjectedEntry;
+        for (size_t i = motionEvent->getHistorySize(); i > 0; i--) {
+            sampleEventTimes += 1;
+            samplePointerCoords += pointerCount;
+            MotionEntry* nextInjectedEntry = new MotionEntry(*sampleEventTimes,
+                    motionEvent->getDeviceId(), motionEvent->getSource(), policyFlags,
+                    action, motionEvent->getFlags(),
+                    motionEvent->getMetaState(), motionEvent->getButtonState(),
+                    motionEvent->getEdgeFlags(),
+                    motionEvent->getXPrecision(), motionEvent->getYPrecision(),
+                    motionEvent->getDownTime(), displayId,
+                    uint32_t(pointerCount), pointerProperties, samplePointerCoords);
+            lastInjectedEntry->next = nextInjectedEntry;
+            lastInjectedEntry = nextInjectedEntry;
+        }
+        break;
+    }
+
+    default:
+        ALOGW("Cannot inject event of type %d", event->getType());
+        return INPUT_EVENT_INJECTION_FAILED;
+    }
+
+    InjectionState* injectionState = new InjectionState(injectorPid, injectorUid);
+    if (syncMode == INPUT_EVENT_INJECTION_SYNC_NONE) {
+        injectionState->injectionIsAsync = true;
+    }
+
+    injectionState->refCount += 1;
+    lastInjectedEntry->injectionState = injectionState;
+
+    bool needWake = false;
+    for (EventEntry* entry = firstInjectedEntry; entry != NULL; ) {
+        EventEntry* nextEntry = entry->next;
+        needWake |= enqueueInboundEventLocked(entry);
+        entry = nextEntry;
+    }
+
+    mLock.unlock();
+
+    if (needWake) {
+        mLooper->wake();
+    }
+
+    int32_t injectionResult;
+    { // acquire lock
+        AutoMutex _l(mLock);
+
+        if (syncMode == INPUT_EVENT_INJECTION_SYNC_NONE) {
+            injectionResult = INPUT_EVENT_INJECTION_SUCCEEDED;
+        } else {
+            for (;;) {
+                injectionResult = injectionState->injectionResult;
+                if (injectionResult != INPUT_EVENT_INJECTION_PENDING) {
+                    break;
+                }
+
+                nsecs_t remainingTimeout = endTime - now();
+                if (remainingTimeout <= 0) {
+#if DEBUG_INJECTION
+                    ALOGD("injectInputEvent - Timed out waiting for injection result "
+                            "to become available.");
+#endif
+                    injectionResult = INPUT_EVENT_INJECTION_TIMED_OUT;
+                    break;
+                }
+
+                mInjectionResultAvailableCondition.waitRelative(mLock, remainingTimeout);
+            }
+
+            if (injectionResult == INPUT_EVENT_INJECTION_SUCCEEDED
+                    && syncMode == INPUT_EVENT_INJECTION_SYNC_WAIT_FOR_FINISHED) {
+                while (injectionState->pendingForegroundDispatches != 0) {
+#if DEBUG_INJECTION
+                    ALOGD("injectInputEvent - Waiting for %d pending foreground dispatches.",
+                            injectionState->pendingForegroundDispatches);
+#endif
+                    nsecs_t remainingTimeout = endTime - now();
+                    if (remainingTimeout <= 0) {
+#if DEBUG_INJECTION
+                    ALOGD("injectInputEvent - Timed out waiting for pending foreground "
+                            "dispatches to finish.");
+#endif
+                        injectionResult = INPUT_EVENT_INJECTION_TIMED_OUT;
+                        break;
+                    }
+
+                    mInjectionSyncFinishedCondition.waitRelative(mLock, remainingTimeout);
+                }
+            }
+        }
+
+        injectionState->release();
+    } // release lock
+
+#if DEBUG_INJECTION
+    ALOGD("injectInputEvent - Finished with result %d.  "
+            "injectorPid=%d, injectorUid=%d",
+            injectionResult, injectorPid, injectorUid);
+#endif
+
+    return injectionResult;
+}
+
+bool InputDispatcher::hasInjectionPermission(int32_t injectorPid, int32_t injectorUid) {
+    return injectorUid == 0
+            || mPolicy->checkInjectEventsPermissionNonReentrant(injectorPid, injectorUid);
+}
+
+void InputDispatcher::setInjectionResultLocked(EventEntry* entry, int32_t injectionResult) {
+    InjectionState* injectionState = entry->injectionState;
+    if (injectionState) {
+#if DEBUG_INJECTION
+        ALOGD("Setting input event injection result to %d.  "
+                "injectorPid=%d, injectorUid=%d",
+                 injectionResult, injectionState->injectorPid, injectionState->injectorUid);
+#endif
+
+        if (injectionState->injectionIsAsync
+                && !(entry->policyFlags & POLICY_FLAG_FILTERED)) {
+            // Log the outcome since the injector did not wait for the injection result.
+            switch (injectionResult) {
+            case INPUT_EVENT_INJECTION_SUCCEEDED:
+                ALOGV("Asynchronous input event injection succeeded.");
+                break;
+            case INPUT_EVENT_INJECTION_FAILED:
+                ALOGW("Asynchronous input event injection failed.");
+                break;
+            case INPUT_EVENT_INJECTION_PERMISSION_DENIED:
+                ALOGW("Asynchronous input event injection permission denied.");
+                break;
+            case INPUT_EVENT_INJECTION_TIMED_OUT:
+                ALOGW("Asynchronous input event injection timed out.");
+                break;
+            }
+        }
+
+        injectionState->injectionResult = injectionResult;
+        mInjectionResultAvailableCondition.broadcast();
+    }
+}
+
+void InputDispatcher::incrementPendingForegroundDispatchesLocked(EventEntry* entry) {
+    InjectionState* injectionState = entry->injectionState;
+    if (injectionState) {
+        injectionState->pendingForegroundDispatches += 1;
+    }
+}
+
+void InputDispatcher::decrementPendingForegroundDispatchesLocked(EventEntry* entry) {
+    InjectionState* injectionState = entry->injectionState;
+    if (injectionState) {
+        injectionState->pendingForegroundDispatches -= 1;
+
+        if (injectionState->pendingForegroundDispatches == 0) {
+            mInjectionSyncFinishedCondition.broadcast();
+        }
+    }
+}
+
+sp<InputWindowHandle> InputDispatcher::getWindowHandleLocked(
+        const sp<InputChannel>& inputChannel) const {
+    size_t numWindows = mWindowHandles.size();
+    for (size_t i = 0; i < numWindows; i++) {
+        const sp<InputWindowHandle>& windowHandle = mWindowHandles.itemAt(i);
+        if (windowHandle->getInputChannel() == inputChannel) {
+            return windowHandle;
+        }
+    }
+    return NULL;
+}
+
+bool InputDispatcher::hasWindowHandleLocked(
+        const sp<InputWindowHandle>& windowHandle) const {
+    size_t numWindows = mWindowHandles.size();
+    for (size_t i = 0; i < numWindows; i++) {
+        if (mWindowHandles.itemAt(i) == windowHandle) {
+            return true;
+        }
+    }
+    return false;
+}
+
+void InputDispatcher::setInputWindows(const Vector<sp<InputWindowHandle> >& inputWindowHandles) {
+#if DEBUG_FOCUS
+    ALOGD("setInputWindows");
+#endif
+    { // acquire lock
+        AutoMutex _l(mLock);
+
+        Vector<sp<InputWindowHandle> > oldWindowHandles = mWindowHandles;
+        mWindowHandles = inputWindowHandles;
+
+        sp<InputWindowHandle> newFocusedWindowHandle;
+        bool foundHoveredWindow = false;
+        for (size_t i = 0; i < mWindowHandles.size(); i++) {
+            const sp<InputWindowHandle>& windowHandle = mWindowHandles.itemAt(i);
+            if (!windowHandle->updateInfo() || windowHandle->getInputChannel() == NULL) {
+                mWindowHandles.removeAt(i--);
+                continue;
+            }
+            if (windowHandle->getInfo()->hasFocus) {
+                newFocusedWindowHandle = windowHandle;
+            }
+            if (windowHandle == mLastHoverWindowHandle) {
+                foundHoveredWindow = true;
+            }
+        }
+
+        if (!foundHoveredWindow) {
+            mLastHoverWindowHandle = NULL;
+        }
+
+        if (mFocusedWindowHandle != newFocusedWindowHandle) {
+            if (mFocusedWindowHandle != NULL) {
+#if DEBUG_FOCUS
+                ALOGD("Focus left window: %s",
+                        mFocusedWindowHandle->getName().string());
+#endif
+                sp<InputChannel> focusedInputChannel = mFocusedWindowHandle->getInputChannel();
+                if (focusedInputChannel != NULL) {
+                    CancelationOptions options(CancelationOptions::CANCEL_NON_POINTER_EVENTS,
+                            "focus left window");
+                    synthesizeCancelationEventsForInputChannelLocked(
+                            focusedInputChannel, options);
+                }
+            }
+            if (newFocusedWindowHandle != NULL) {
+#if DEBUG_FOCUS
+                ALOGD("Focus entered window: %s",
+                        newFocusedWindowHandle->getName().string());
+#endif
+            }
+            mFocusedWindowHandle = newFocusedWindowHandle;
+        }
+
+        for (size_t i = 0; i < mTouchState.windows.size(); i++) {
+            TouchedWindow& touchedWindow = mTouchState.windows.editItemAt(i);
+            if (!hasWindowHandleLocked(touchedWindow.windowHandle)) {
+#if DEBUG_FOCUS
+                ALOGD("Touched window was removed: %s",
+                        touchedWindow.windowHandle->getName().string());
+#endif
+                sp<InputChannel> touchedInputChannel =
+                        touchedWindow.windowHandle->getInputChannel();
+                if (touchedInputChannel != NULL) {
+                    CancelationOptions options(CancelationOptions::CANCEL_POINTER_EVENTS,
+                            "touched window was removed");
+                    synthesizeCancelationEventsForInputChannelLocked(
+                            touchedInputChannel, options);
+                }
+                mTouchState.windows.removeAt(i--);
+            }
+        }
+
+        // Release information for windows that are no longer present.
+        // This ensures that unused input channels are released promptly.
+        // Otherwise, they might stick around until the window handle is destroyed
+        // which might not happen until the next GC.
+        for (size_t i = 0; i < oldWindowHandles.size(); i++) {
+            const sp<InputWindowHandle>& oldWindowHandle = oldWindowHandles.itemAt(i);
+            if (!hasWindowHandleLocked(oldWindowHandle)) {
+#if DEBUG_FOCUS
+                ALOGD("Window went away: %s", oldWindowHandle->getName().string());
+#endif
+                oldWindowHandle->releaseInfo();
+            }
+        }
+    } // release lock
+
+    // Wake up poll loop since it may need to make new input dispatching choices.
+    mLooper->wake();
+}
+
+void InputDispatcher::setFocusedApplication(
+        const sp<InputApplicationHandle>& inputApplicationHandle) {
+#if DEBUG_FOCUS
+    ALOGD("setFocusedApplication");
+#endif
+    { // acquire lock
+        AutoMutex _l(mLock);
+
+        if (inputApplicationHandle != NULL && inputApplicationHandle->updateInfo()) {
+            if (mFocusedApplicationHandle != inputApplicationHandle) {
+                if (mFocusedApplicationHandle != NULL) {
+                    resetANRTimeoutsLocked();
+                    mFocusedApplicationHandle->releaseInfo();
+                }
+                mFocusedApplicationHandle = inputApplicationHandle;
+            }
+        } else if (mFocusedApplicationHandle != NULL) {
+            resetANRTimeoutsLocked();
+            mFocusedApplicationHandle->releaseInfo();
+            mFocusedApplicationHandle.clear();
+        }
+
+#if DEBUG_FOCUS
+        //logDispatchStateLocked();
+#endif
+    } // release lock
+
+    // Wake up poll loop since it may need to make new input dispatching choices.
+    mLooper->wake();
+}
+
+void InputDispatcher::setInputDispatchMode(bool enabled, bool frozen) {
+#if DEBUG_FOCUS
+    ALOGD("setInputDispatchMode: enabled=%d, frozen=%d", enabled, frozen);
+#endif
+
+    bool changed;
+    { // acquire lock
+        AutoMutex _l(mLock);
+
+        if (mDispatchEnabled != enabled || mDispatchFrozen != frozen) {
+            if (mDispatchFrozen && !frozen) {
+                resetANRTimeoutsLocked();
+            }
+
+            if (mDispatchEnabled && !enabled) {
+                resetAndDropEverythingLocked("dispatcher is being disabled");
+            }
+
+            mDispatchEnabled = enabled;
+            mDispatchFrozen = frozen;
+            changed = true;
+        } else {
+            changed = false;
+        }
+
+#if DEBUG_FOCUS
+        //logDispatchStateLocked();
+#endif
+    } // release lock
+
+    if (changed) {
+        // Wake up poll loop since it may need to make new input dispatching choices.
+        mLooper->wake();
+    }
+}
+
+void InputDispatcher::setInputFilterEnabled(bool enabled) {
+#if DEBUG_FOCUS
+    ALOGD("setInputFilterEnabled: enabled=%d", enabled);
+#endif
+
+    { // acquire lock
+        AutoMutex _l(mLock);
+
+        if (mInputFilterEnabled == enabled) {
+            return;
+        }
+
+        mInputFilterEnabled = enabled;
+        resetAndDropEverythingLocked("input filter is being enabled or disabled");
+    } // release lock
+
+    // Wake up poll loop since there might be work to do to drop everything.
+    mLooper->wake();
+}
+
+bool InputDispatcher::transferTouchFocus(const sp<InputChannel>& fromChannel,
+        const sp<InputChannel>& toChannel) {
+#if DEBUG_FOCUS
+    ALOGD("transferTouchFocus: fromChannel=%s, toChannel=%s",
+            fromChannel->getName().string(), toChannel->getName().string());
+#endif
+    { // acquire lock
+        AutoMutex _l(mLock);
+
+        sp<InputWindowHandle> fromWindowHandle = getWindowHandleLocked(fromChannel);
+        sp<InputWindowHandle> toWindowHandle = getWindowHandleLocked(toChannel);
+        if (fromWindowHandle == NULL || toWindowHandle == NULL) {
+#if DEBUG_FOCUS
+            ALOGD("Cannot transfer focus because from or to window not found.");
+#endif
+            return false;
+        }
+        if (fromWindowHandle == toWindowHandle) {
+#if DEBUG_FOCUS
+            ALOGD("Trivial transfer to same window.");
+#endif
+            return true;
+        }
+        if (fromWindowHandle->getInfo()->displayId != toWindowHandle->getInfo()->displayId) {
+#if DEBUG_FOCUS
+            ALOGD("Cannot transfer focus because windows are on different displays.");
+#endif
+            return false;
+        }
+
+        bool found = false;
+        for (size_t i = 0; i < mTouchState.windows.size(); i++) {
+            const TouchedWindow& touchedWindow = mTouchState.windows[i];
+            if (touchedWindow.windowHandle == fromWindowHandle) {
+                int32_t oldTargetFlags = touchedWindow.targetFlags;
+                BitSet32 pointerIds = touchedWindow.pointerIds;
+
+                mTouchState.windows.removeAt(i);
+
+                int32_t newTargetFlags = oldTargetFlags
+                        & (InputTarget::FLAG_FOREGROUND
+                                | InputTarget::FLAG_SPLIT | InputTarget::FLAG_DISPATCH_AS_IS);
+                mTouchState.addOrUpdateWindow(toWindowHandle, newTargetFlags, pointerIds);
+
+                found = true;
+                break;
+            }
+        }
+
+        if (! found) {
+#if DEBUG_FOCUS
+            ALOGD("Focus transfer failed because from window did not have focus.");
+#endif
+            return false;
+        }
+
+        ssize_t fromConnectionIndex = getConnectionIndexLocked(fromChannel);
+        ssize_t toConnectionIndex = getConnectionIndexLocked(toChannel);
+        if (fromConnectionIndex >= 0 && toConnectionIndex >= 0) {
+            sp<Connection> fromConnection = mConnectionsByFd.valueAt(fromConnectionIndex);
+            sp<Connection> toConnection = mConnectionsByFd.valueAt(toConnectionIndex);
+
+            fromConnection->inputState.copyPointerStateTo(toConnection->inputState);
+            CancelationOptions options(CancelationOptions::CANCEL_POINTER_EVENTS,
+                    "transferring touch focus from this window to another window");
+            synthesizeCancelationEventsForConnectionLocked(fromConnection, options);
+        }
+
+#if DEBUG_FOCUS
+        logDispatchStateLocked();
+#endif
+    } // release lock
+
+    // Wake up poll loop since it may need to make new input dispatching choices.
+    mLooper->wake();
+    return true;
+}
+
+void InputDispatcher::resetAndDropEverythingLocked(const char* reason) {
+#if DEBUG_FOCUS
+    ALOGD("Resetting and dropping all events (%s).", reason);
+#endif
+
+    CancelationOptions options(CancelationOptions::CANCEL_ALL_EVENTS, reason);
+    synthesizeCancelationEventsForAllConnectionsLocked(options);
+
+    resetKeyRepeatLocked();
+    releasePendingEventLocked();
+    drainInboundQueueLocked();
+    resetANRTimeoutsLocked();
+
+    mTouchState.reset();
+    mLastHoverWindowHandle.clear();
+}
+
+void InputDispatcher::logDispatchStateLocked() {
+    String8 dump;
+    dumpDispatchStateLocked(dump);
+
+    char* text = dump.lockBuffer(dump.size());
+    char* start = text;
+    while (*start != '\0') {
+        char* end = strchr(start, '\n');
+        if (*end == '\n') {
+            *(end++) = '\0';
+        }
+        ALOGD("%s", start);
+        start = end;
+    }
+}
+
+void InputDispatcher::dumpDispatchStateLocked(String8& dump) {
+    dump.appendFormat(INDENT "DispatchEnabled: %d\n", mDispatchEnabled);
+    dump.appendFormat(INDENT "DispatchFrozen: %d\n", mDispatchFrozen);
+
+    if (mFocusedApplicationHandle != NULL) {
+        dump.appendFormat(INDENT "FocusedApplication: name='%s', dispatchingTimeout=%0.3fms\n",
+                mFocusedApplicationHandle->getName().string(),
+                mFocusedApplicationHandle->getDispatchingTimeout(
+                        DEFAULT_INPUT_DISPATCHING_TIMEOUT) / 1000000.0);
+    } else {
+        dump.append(INDENT "FocusedApplication: <null>\n");
+    }
+    dump.appendFormat(INDENT "FocusedWindow: name='%s'\n",
+            mFocusedWindowHandle != NULL ? mFocusedWindowHandle->getName().string() : "<null>");
+
+    dump.appendFormat(INDENT "TouchDown: %s\n", toString(mTouchState.down));
+    dump.appendFormat(INDENT "TouchSplit: %s\n", toString(mTouchState.split));
+    dump.appendFormat(INDENT "TouchDeviceId: %d\n", mTouchState.deviceId);
+    dump.appendFormat(INDENT "TouchSource: 0x%08x\n", mTouchState.source);
+    dump.appendFormat(INDENT "TouchDisplayId: %d\n", mTouchState.displayId);
+    if (!mTouchState.windows.isEmpty()) {
+        dump.append(INDENT "TouchedWindows:\n");
+        for (size_t i = 0; i < mTouchState.windows.size(); i++) {
+            const TouchedWindow& touchedWindow = mTouchState.windows[i];
+            dump.appendFormat(INDENT2 "%d: name='%s', pointerIds=0x%0x, targetFlags=0x%x\n",
+                    i, touchedWindow.windowHandle->getName().string(),
+                    touchedWindow.pointerIds.value,
+                    touchedWindow.targetFlags);
+        }
+    } else {
+        dump.append(INDENT "TouchedWindows: <none>\n");
+    }
+
+    if (!mWindowHandles.isEmpty()) {
+        dump.append(INDENT "Windows:\n");
+        for (size_t i = 0; i < mWindowHandles.size(); i++) {
+            const sp<InputWindowHandle>& windowHandle = mWindowHandles.itemAt(i);
+            const InputWindowInfo* windowInfo = windowHandle->getInfo();
+
+            dump.appendFormat(INDENT2 "%d: name='%s', displayId=%d, "
+                    "paused=%s, hasFocus=%s, hasWallpaper=%s, "
+                    "visible=%s, canReceiveKeys=%s, flags=0x%08x, type=0x%08x, layer=%d, "
+                    "frame=[%d,%d][%d,%d], scale=%f, "
+                    "touchableRegion=",
+                    i, windowInfo->name.string(), windowInfo->displayId,
+                    toString(windowInfo->paused),
+                    toString(windowInfo->hasFocus),
+                    toString(windowInfo->hasWallpaper),
+                    toString(windowInfo->visible),
+                    toString(windowInfo->canReceiveKeys),
+                    windowInfo->layoutParamsFlags, windowInfo->layoutParamsType,
+                    windowInfo->layer,
+                    windowInfo->frameLeft, windowInfo->frameTop,
+                    windowInfo->frameRight, windowInfo->frameBottom,
+                    windowInfo->scaleFactor);
+            dumpRegion(dump, windowInfo->touchableRegion);
+            dump.appendFormat(", inputFeatures=0x%08x", windowInfo->inputFeatures);
+            dump.appendFormat(", ownerPid=%d, ownerUid=%d, dispatchingTimeout=%0.3fms\n",
+                    windowInfo->ownerPid, windowInfo->ownerUid,
+                    windowInfo->dispatchingTimeout / 1000000.0);
+        }
+    } else {
+        dump.append(INDENT "Windows: <none>\n");
+    }
+
+    if (!mMonitoringChannels.isEmpty()) {
+        dump.append(INDENT "MonitoringChannels:\n");
+        for (size_t i = 0; i < mMonitoringChannels.size(); i++) {
+            const sp<InputChannel>& channel = mMonitoringChannels[i];
+            dump.appendFormat(INDENT2 "%d: '%s'\n", i, channel->getName().string());
+        }
+    } else {
+        dump.append(INDENT "MonitoringChannels: <none>\n");
+    }
+
+    nsecs_t currentTime = now();
+
+    if (!mInboundQueue.isEmpty()) {
+        dump.appendFormat(INDENT "InboundQueue: length=%u\n", mInboundQueue.count());
+        for (EventEntry* entry = mInboundQueue.head; entry; entry = entry->next) {
+            dump.append(INDENT2);
+            entry->appendDescription(dump);
+            dump.appendFormat(", age=%0.1fms\n",
+                    (currentTime - entry->eventTime) * 0.000001f);
+        }
+    } else {
+        dump.append(INDENT "InboundQueue: <empty>\n");
+    }
+
+    if (!mConnectionsByFd.isEmpty()) {
+        dump.append(INDENT "Connections:\n");
+        for (size_t i = 0; i < mConnectionsByFd.size(); i++) {
+            const sp<Connection>& connection = mConnectionsByFd.valueAt(i);
+            dump.appendFormat(INDENT2 "%d: channelName='%s', windowName='%s', "
+                    "status=%s, monitor=%s, inputPublisherBlocked=%s\n",
+                    i, connection->getInputChannelName(), connection->getWindowName(),
+                    connection->getStatusLabel(), toString(connection->monitor),
+                    toString(connection->inputPublisherBlocked));
+
+            if (!connection->outboundQueue.isEmpty()) {
+                dump.appendFormat(INDENT3 "OutboundQueue: length=%u\n",
+                        connection->outboundQueue.count());
+                for (DispatchEntry* entry = connection->outboundQueue.head; entry;
+                        entry = entry->next) {
+                    dump.append(INDENT4);
+                    entry->eventEntry->appendDescription(dump);
+                    dump.appendFormat(", targetFlags=0x%08x, resolvedAction=%d, age=%0.1fms\n",
+                            entry->targetFlags, entry->resolvedAction,
+                            (currentTime - entry->eventEntry->eventTime) * 0.000001f);
+                }
+            } else {
+                dump.append(INDENT3 "OutboundQueue: <empty>\n");
+            }
+
+            if (!connection->waitQueue.isEmpty()) {
+                dump.appendFormat(INDENT3 "WaitQueue: length=%u\n",
+                        connection->waitQueue.count());
+                for (DispatchEntry* entry = connection->waitQueue.head; entry;
+                        entry = entry->next) {
+                    dump.append(INDENT4);
+                    entry->eventEntry->appendDescription(dump);
+                    dump.appendFormat(", targetFlags=0x%08x, resolvedAction=%d, "
+                            "age=%0.1fms, wait=%0.1fms\n",
+                            entry->targetFlags, entry->resolvedAction,
+                            (currentTime - entry->eventEntry->eventTime) * 0.000001f,
+                            (currentTime - entry->deliveryTime) * 0.000001f);
+                }
+            } else {
+                dump.append(INDENT3 "WaitQueue: <empty>\n");
+            }
+        }
+    } else {
+        dump.append(INDENT "Connections: <none>\n");
+    }
+
+    if (isAppSwitchPendingLocked()) {
+        dump.appendFormat(INDENT "AppSwitch: pending, due in %0.1fms\n",
+                (mAppSwitchDueTime - now()) / 1000000.0);
+    } else {
+        dump.append(INDENT "AppSwitch: not pending\n");
+    }
+
+    dump.append(INDENT "Configuration:\n");
+    dump.appendFormat(INDENT2 "KeyRepeatDelay: %0.1fms\n",
+            mConfig.keyRepeatDelay * 0.000001f);
+    dump.appendFormat(INDENT2 "KeyRepeatTimeout: %0.1fms\n",
+            mConfig.keyRepeatTimeout * 0.000001f);
+}
+
+status_t InputDispatcher::registerInputChannel(const sp<InputChannel>& inputChannel,
+        const sp<InputWindowHandle>& inputWindowHandle, bool monitor) {
+#if DEBUG_REGISTRATION
+    ALOGD("channel '%s' ~ registerInputChannel - monitor=%s", inputChannel->getName().string(),
+            toString(monitor));
+#endif
+
+    { // acquire lock
+        AutoMutex _l(mLock);
+
+        if (getConnectionIndexLocked(inputChannel) >= 0) {
+            ALOGW("Attempted to register already registered input channel '%s'",
+                    inputChannel->getName().string());
+            return BAD_VALUE;
+        }
+
+        sp<Connection> connection = new Connection(inputChannel, inputWindowHandle, monitor);
+
+        int fd = inputChannel->getFd();
+        mConnectionsByFd.add(fd, connection);
+
+        if (monitor) {
+            mMonitoringChannels.push(inputChannel);
+        }
+
+        mLooper->addFd(fd, 0, ALOOPER_EVENT_INPUT, handleReceiveCallback, this);
+    } // release lock
+
+    // Wake the looper because some connections have changed.
+    mLooper->wake();
+    return OK;
+}
+
+status_t InputDispatcher::unregisterInputChannel(const sp<InputChannel>& inputChannel) {
+#if DEBUG_REGISTRATION
+    ALOGD("channel '%s' ~ unregisterInputChannel", inputChannel->getName().string());
+#endif
+
+    { // acquire lock
+        AutoMutex _l(mLock);
+
+        status_t status = unregisterInputChannelLocked(inputChannel, false /*notify*/);
+        if (status) {
+            return status;
+        }
+    } // release lock
+
+    // Wake the poll loop because removing the connection may have changed the current
+    // synchronization state.
+    mLooper->wake();
+    return OK;
+}
+
+status_t InputDispatcher::unregisterInputChannelLocked(const sp<InputChannel>& inputChannel,
+        bool notify) {
+    ssize_t connectionIndex = getConnectionIndexLocked(inputChannel);
+    if (connectionIndex < 0) {
+        ALOGW("Attempted to unregister already unregistered input channel '%s'",
+                inputChannel->getName().string());
+        return BAD_VALUE;
+    }
+
+    sp<Connection> connection = mConnectionsByFd.valueAt(connectionIndex);
+    mConnectionsByFd.removeItemsAt(connectionIndex);
+
+    if (connection->monitor) {
+        removeMonitorChannelLocked(inputChannel);
+    }
+
+    mLooper->removeFd(inputChannel->getFd());
+
+    nsecs_t currentTime = now();
+    abortBrokenDispatchCycleLocked(currentTime, connection, notify);
+
+    connection->status = Connection::STATUS_ZOMBIE;
+    return OK;
+}
+
+void InputDispatcher::removeMonitorChannelLocked(const sp<InputChannel>& inputChannel) {
+    for (size_t i = 0; i < mMonitoringChannels.size(); i++) {
+         if (mMonitoringChannels[i] == inputChannel) {
+             mMonitoringChannels.removeAt(i);
+             break;
+         }
+    }
+}
+
+ssize_t InputDispatcher::getConnectionIndexLocked(const sp<InputChannel>& inputChannel) {
+    ssize_t connectionIndex = mConnectionsByFd.indexOfKey(inputChannel->getFd());
+    if (connectionIndex >= 0) {
+        sp<Connection> connection = mConnectionsByFd.valueAt(connectionIndex);
+        if (connection->inputChannel.get() == inputChannel.get()) {
+            return connectionIndex;
+        }
+    }
+
+    return -1;
+}
+
+void InputDispatcher::onDispatchCycleFinishedLocked(
+        nsecs_t currentTime, const sp<Connection>& connection, uint32_t seq, bool handled) {
+    CommandEntry* commandEntry = postCommandLocked(
+            & InputDispatcher::doDispatchCycleFinishedLockedInterruptible);
+    commandEntry->connection = connection;
+    commandEntry->eventTime = currentTime;
+    commandEntry->seq = seq;
+    commandEntry->handled = handled;
+}
+
+void InputDispatcher::onDispatchCycleBrokenLocked(
+        nsecs_t currentTime, const sp<Connection>& connection) {
+    ALOGE("channel '%s' ~ Channel is unrecoverably broken and will be disposed!",
+            connection->getInputChannelName());
+
+    CommandEntry* commandEntry = postCommandLocked(
+            & InputDispatcher::doNotifyInputChannelBrokenLockedInterruptible);
+    commandEntry->connection = connection;
+}
+
+void InputDispatcher::onANRLocked(
+        nsecs_t currentTime, const sp<InputApplicationHandle>& applicationHandle,
+        const sp<InputWindowHandle>& windowHandle,
+        nsecs_t eventTime, nsecs_t waitStartTime, const char* reason) {
+    float dispatchLatency = (currentTime - eventTime) * 0.000001f;
+    float waitDuration = (currentTime - waitStartTime) * 0.000001f;
+    ALOGI("Application is not responding: %s.  "
+            "It has been %0.1fms since event, %0.1fms since wait started.  Reason: %s",
+            getApplicationWindowLabelLocked(applicationHandle, windowHandle).string(),
+            dispatchLatency, waitDuration, reason);
+
+    // Capture a record of the InputDispatcher state at the time of the ANR.
+    time_t t = time(NULL);
+    struct tm tm;
+    localtime_r(&t, &tm);
+    char timestr[64];
+    strftime(timestr, sizeof(timestr), "%F %T", &tm);
+    mLastANRState.clear();
+    mLastANRState.append(INDENT "ANR:\n");
+    mLastANRState.appendFormat(INDENT2 "Time: %s\n", timestr);
+    mLastANRState.appendFormat(INDENT2 "Window: %s\n",
+            getApplicationWindowLabelLocked(applicationHandle, windowHandle).string());
+    mLastANRState.appendFormat(INDENT2 "DispatchLatency: %0.1fms\n", dispatchLatency);
+    mLastANRState.appendFormat(INDENT2 "WaitDuration: %0.1fms\n", waitDuration);
+    mLastANRState.appendFormat(INDENT2 "Reason: %s\n", reason);
+    dumpDispatchStateLocked(mLastANRState);
+
+    CommandEntry* commandEntry = postCommandLocked(
+            & InputDispatcher::doNotifyANRLockedInterruptible);
+    commandEntry->inputApplicationHandle = applicationHandle;
+    commandEntry->inputWindowHandle = windowHandle;
+}
+
+void InputDispatcher::doNotifyConfigurationChangedInterruptible(
+        CommandEntry* commandEntry) {
+    mLock.unlock();
+
+    mPolicy->notifyConfigurationChanged(commandEntry->eventTime);
+
+    mLock.lock();
+}
+
+void InputDispatcher::doNotifyInputChannelBrokenLockedInterruptible(
+        CommandEntry* commandEntry) {
+    sp<Connection> connection = commandEntry->connection;
+
+    if (connection->status != Connection::STATUS_ZOMBIE) {
+        mLock.unlock();
+
+        mPolicy->notifyInputChannelBroken(connection->inputWindowHandle);
+
+        mLock.lock();
+    }
+}
+
+void InputDispatcher::doNotifyANRLockedInterruptible(
+        CommandEntry* commandEntry) {
+    mLock.unlock();
+
+    nsecs_t newTimeout = mPolicy->notifyANR(
+            commandEntry->inputApplicationHandle, commandEntry->inputWindowHandle);
+
+    mLock.lock();
+
+    resumeAfterTargetsNotReadyTimeoutLocked(newTimeout,
+            commandEntry->inputWindowHandle != NULL
+                    ? commandEntry->inputWindowHandle->getInputChannel() : NULL);
+}
+
+void InputDispatcher::doInterceptKeyBeforeDispatchingLockedInterruptible(
+        CommandEntry* commandEntry) {
+    KeyEntry* entry = commandEntry->keyEntry;
+
+    KeyEvent event;
+    initializeKeyEvent(&event, entry);
+
+    mLock.unlock();
+
+    nsecs_t delay = mPolicy->interceptKeyBeforeDispatching(commandEntry->inputWindowHandle,
+            &event, entry->policyFlags);
+
+    mLock.lock();
+
+    if (delay < 0) {
+        entry->interceptKeyResult = KeyEntry::INTERCEPT_KEY_RESULT_SKIP;
+    } else if (!delay) {
+        entry->interceptKeyResult = KeyEntry::INTERCEPT_KEY_RESULT_CONTINUE;
+    } else {
+        entry->interceptKeyResult = KeyEntry::INTERCEPT_KEY_RESULT_TRY_AGAIN_LATER;
+        entry->interceptKeyWakeupTime = now() + delay;
+    }
+    entry->release();
+}
+
+void InputDispatcher::doDispatchCycleFinishedLockedInterruptible(
+        CommandEntry* commandEntry) {
+    sp<Connection> connection = commandEntry->connection;
+    nsecs_t finishTime = commandEntry->eventTime;
+    uint32_t seq = commandEntry->seq;
+    bool handled = commandEntry->handled;
+
+    // Handle post-event policy actions.
+    DispatchEntry* dispatchEntry = connection->findWaitQueueEntry(seq);
+    if (dispatchEntry) {
+        nsecs_t eventDuration = finishTime - dispatchEntry->deliveryTime;
+        if (eventDuration > SLOW_EVENT_PROCESSING_WARNING_TIMEOUT) {
+            String8 msg;
+            msg.appendFormat("Window '%s' spent %0.1fms processing the last input event: ",
+                    connection->getWindowName(), eventDuration * 0.000001f);
+            dispatchEntry->eventEntry->appendDescription(msg);
+            ALOGI("%s", msg.string());
+        }
+
+        bool restartEvent;
+        if (dispatchEntry->eventEntry->type == EventEntry::TYPE_KEY) {
+            KeyEntry* keyEntry = static_cast<KeyEntry*>(dispatchEntry->eventEntry);
+            restartEvent = afterKeyEventLockedInterruptible(connection,
+                    dispatchEntry, keyEntry, handled);
+        } else if (dispatchEntry->eventEntry->type == EventEntry::TYPE_MOTION) {
+            MotionEntry* motionEntry = static_cast<MotionEntry*>(dispatchEntry->eventEntry);
+            restartEvent = afterMotionEventLockedInterruptible(connection,
+                    dispatchEntry, motionEntry, handled);
+        } else {
+            restartEvent = false;
+        }
+
+        // Dequeue the event and start the next cycle.
+        // Note that because the lock might have been released, it is possible that the
+        // contents of the wait queue to have been drained, so we need to double-check
+        // a few things.
+        if (dispatchEntry == connection->findWaitQueueEntry(seq)) {
+            connection->waitQueue.dequeue(dispatchEntry);
+            traceWaitQueueLengthLocked(connection);
+            if (restartEvent && connection->status == Connection::STATUS_NORMAL) {
+                connection->outboundQueue.enqueueAtHead(dispatchEntry);
+                traceOutboundQueueLengthLocked(connection);
+            } else {
+                releaseDispatchEntryLocked(dispatchEntry);
+            }
+        }
+
+        // Start the next dispatch cycle for this connection.
+        startDispatchCycleLocked(now(), connection);
+    }
+}
+
+bool InputDispatcher::afterKeyEventLockedInterruptible(const sp<Connection>& connection,
+        DispatchEntry* dispatchEntry, KeyEntry* keyEntry, bool handled) {
+    if (!(keyEntry->flags & AKEY_EVENT_FLAG_FALLBACK)) {
+        // Get the fallback key state.
+        // Clear it out after dispatching the UP.
+        int32_t originalKeyCode = keyEntry->keyCode;
+        int32_t fallbackKeyCode = connection->inputState.getFallbackKey(originalKeyCode);
+        if (keyEntry->action == AKEY_EVENT_ACTION_UP) {
+            connection->inputState.removeFallbackKey(originalKeyCode);
+        }
+
+        if (handled || !dispatchEntry->hasForegroundTarget()) {
+            // If the application handles the original key for which we previously
+            // generated a fallback or if the window is not a foreground window,
+            // then cancel the associated fallback key, if any.
+            if (fallbackKeyCode != -1) {
+                // Dispatch the unhandled key to the policy with the cancel flag.
+#if DEBUG_OUTBOUND_EVENT_DETAILS
+                ALOGD("Unhandled key event: Asking policy to cancel fallback action.  "
+                        "keyCode=%d, action=%d, repeatCount=%d, policyFlags=0x%08x",
+                        keyEntry->keyCode, keyEntry->action, keyEntry->repeatCount,
+                        keyEntry->policyFlags);
+#endif
+                KeyEvent event;
+                initializeKeyEvent(&event, keyEntry);
+                event.setFlags(event.getFlags() | AKEY_EVENT_FLAG_CANCELED);
+
+                mLock.unlock();
+
+                mPolicy->dispatchUnhandledKey(connection->inputWindowHandle,
+                        &event, keyEntry->policyFlags, &event);
+
+                mLock.lock();
+
+                // Cancel the fallback key.
+                if (fallbackKeyCode != AKEYCODE_UNKNOWN) {
+                    CancelationOptions options(CancelationOptions::CANCEL_FALLBACK_EVENTS,
+                            "application handled the original non-fallback key "
+                            "or is no longer a foreground target, "
+                            "canceling previously dispatched fallback key");
+                    options.keyCode = fallbackKeyCode;
+                    synthesizeCancelationEventsForConnectionLocked(connection, options);
+                }
+                connection->inputState.removeFallbackKey(originalKeyCode);
+            }
+        } else {
+            // If the application did not handle a non-fallback key, first check
+            // that we are in a good state to perform unhandled key event processing
+            // Then ask the policy what to do with it.
+            bool initialDown = keyEntry->action == AKEY_EVENT_ACTION_DOWN
+                    && keyEntry->repeatCount == 0;
+            if (fallbackKeyCode == -1 && !initialDown) {
+#if DEBUG_OUTBOUND_EVENT_DETAILS
+                ALOGD("Unhandled key event: Skipping unhandled key event processing "
+                        "since this is not an initial down.  "
+                        "keyCode=%d, action=%d, repeatCount=%d, policyFlags=0x%08x",
+                        originalKeyCode, keyEntry->action, keyEntry->repeatCount,
+                        keyEntry->policyFlags);
+#endif
+                return false;
+            }
+
+            // Dispatch the unhandled key to the policy.
+#if DEBUG_OUTBOUND_EVENT_DETAILS
+            ALOGD("Unhandled key event: Asking policy to perform fallback action.  "
+                    "keyCode=%d, action=%d, repeatCount=%d, policyFlags=0x%08x",
+                    keyEntry->keyCode, keyEntry->action, keyEntry->repeatCount,
+                    keyEntry->policyFlags);
+#endif
+            KeyEvent event;
+            initializeKeyEvent(&event, keyEntry);
+
+            mLock.unlock();
+
+            bool fallback = mPolicy->dispatchUnhandledKey(connection->inputWindowHandle,
+                    &event, keyEntry->policyFlags, &event);
+
+            mLock.lock();
+
+            if (connection->status != Connection::STATUS_NORMAL) {
+                connection->inputState.removeFallbackKey(originalKeyCode);
+                return false;
+            }
+
+            // Latch the fallback keycode for this key on an initial down.
+            // The fallback keycode cannot change at any other point in the lifecycle.
+            if (initialDown) {
+                if (fallback) {
+                    fallbackKeyCode = event.getKeyCode();
+                } else {
+                    fallbackKeyCode = AKEYCODE_UNKNOWN;
+                }
+                connection->inputState.setFallbackKey(originalKeyCode, fallbackKeyCode);
+            }
+
+            ALOG_ASSERT(fallbackKeyCode != -1);
+
+            // Cancel the fallback key if the policy decides not to send it anymore.
+            // We will continue to dispatch the key to the policy but we will no
+            // longer dispatch a fallback key to the application.
+            if (fallbackKeyCode != AKEYCODE_UNKNOWN
+                    && (!fallback || fallbackKeyCode != event.getKeyCode())) {
+#if DEBUG_OUTBOUND_EVENT_DETAILS
+                if (fallback) {
+                    ALOGD("Unhandled key event: Policy requested to send key %d"
+                            "as a fallback for %d, but on the DOWN it had requested "
+                            "to send %d instead.  Fallback canceled.",
+                            event.getKeyCode(), originalKeyCode, fallbackKeyCode);
+                } else {
+                    ALOGD("Unhandled key event: Policy did not request fallback for %d, "
+                            "but on the DOWN it had requested to send %d.  "
+                            "Fallback canceled.",
+                            originalKeyCode, fallbackKeyCode);
+                }
+#endif
+
+                CancelationOptions options(CancelationOptions::CANCEL_FALLBACK_EVENTS,
+                        "canceling fallback, policy no longer desires it");
+                options.keyCode = fallbackKeyCode;
+                synthesizeCancelationEventsForConnectionLocked(connection, options);
+
+                fallback = false;
+                fallbackKeyCode = AKEYCODE_UNKNOWN;
+                if (keyEntry->action != AKEY_EVENT_ACTION_UP) {
+                    connection->inputState.setFallbackKey(originalKeyCode,
+                            fallbackKeyCode);
+                }
+            }
+
+#if DEBUG_OUTBOUND_EVENT_DETAILS
+            {
+                String8 msg;
+                const KeyedVector<int32_t, int32_t>& fallbackKeys =
+                        connection->inputState.getFallbackKeys();
+                for (size_t i = 0; i < fallbackKeys.size(); i++) {
+                    msg.appendFormat(", %d->%d", fallbackKeys.keyAt(i),
+                            fallbackKeys.valueAt(i));
+                }
+                ALOGD("Unhandled key event: %d currently tracked fallback keys%s.",
+                        fallbackKeys.size(), msg.string());
+            }
+#endif
+
+            if (fallback) {
+                // Restart the dispatch cycle using the fallback key.
+                keyEntry->eventTime = event.getEventTime();
+                keyEntry->deviceId = event.getDeviceId();
+                keyEntry->source = event.getSource();
+                keyEntry->flags = event.getFlags() | AKEY_EVENT_FLAG_FALLBACK;
+                keyEntry->keyCode = fallbackKeyCode;
+                keyEntry->scanCode = event.getScanCode();
+                keyEntry->metaState = event.getMetaState();
+                keyEntry->repeatCount = event.getRepeatCount();
+                keyEntry->downTime = event.getDownTime();
+                keyEntry->syntheticRepeat = false;
+
+#if DEBUG_OUTBOUND_EVENT_DETAILS
+                ALOGD("Unhandled key event: Dispatching fallback key.  "
+                        "originalKeyCode=%d, fallbackKeyCode=%d, fallbackMetaState=%08x",
+                        originalKeyCode, fallbackKeyCode, keyEntry->metaState);
+#endif
+                return true; // restart the event
+            } else {
+#if DEBUG_OUTBOUND_EVENT_DETAILS
+                ALOGD("Unhandled key event: No fallback key.");
+#endif
+            }
+        }
+    }
+    return false;
+}
+
+bool InputDispatcher::afterMotionEventLockedInterruptible(const sp<Connection>& connection,
+        DispatchEntry* dispatchEntry, MotionEntry* motionEntry, bool handled) {
+    return false;
+}
+
+void InputDispatcher::doPokeUserActivityLockedInterruptible(CommandEntry* commandEntry) {
+    mLock.unlock();
+
+    mPolicy->pokeUserActivity(commandEntry->eventTime, commandEntry->userActivityEventType);
+
+    mLock.lock();
+}
+
+void InputDispatcher::initializeKeyEvent(KeyEvent* event, const KeyEntry* entry) {
+    event->initialize(entry->deviceId, entry->source, entry->action, entry->flags,
+            entry->keyCode, entry->scanCode, entry->metaState, entry->repeatCount,
+            entry->downTime, entry->eventTime);
+}
+
+void InputDispatcher::updateDispatchStatisticsLocked(nsecs_t currentTime, const EventEntry* entry,
+        int32_t injectionResult, nsecs_t timeSpentWaitingForApplication) {
+    // TODO Write some statistics about how long we spend waiting.
+}
+
+void InputDispatcher::traceInboundQueueLengthLocked() {
+#ifdef HAVE_ANDROID_OS
+    if (ATRACE_ENABLED()) {
+        ATRACE_INT("iq", mInboundQueue.count());
+    }
+#endif
+}
+
+void InputDispatcher::traceOutboundQueueLengthLocked(const sp<Connection>& connection) {
+#ifdef HAVE_ANDROID_OS
+    if (ATRACE_ENABLED()) {
+        char counterName[40];
+        snprintf(counterName, sizeof(counterName), "oq:%s", connection->getWindowName());
+        ATRACE_INT(counterName, connection->outboundQueue.count());
+    }
+#endif
+}
+
+void InputDispatcher::traceWaitQueueLengthLocked(const sp<Connection>& connection) {
+#ifdef HAVE_ANDROID_OS
+    if (ATRACE_ENABLED()) {
+        char counterName[40];
+        snprintf(counterName, sizeof(counterName), "wq:%s", connection->getWindowName());
+        ATRACE_INT(counterName, connection->waitQueue.count());
+    }
+#endif
+}
+
+void InputDispatcher::dump(String8& dump) {
+    AutoMutex _l(mLock);
+
+    dump.append("Input Dispatcher State:\n");
+    dumpDispatchStateLocked(dump);
+
+    if (!mLastANRState.isEmpty()) {
+        dump.append("\nInput Dispatcher State at time of last ANR:\n");
+        dump.append(mLastANRState);
+    }
+}
+
+void InputDispatcher::monitor() {
+    // Acquire and release the lock to ensure that the dispatcher has not deadlocked.
+    mLock.lock();
+    mLooper->wake();
+    mDispatcherIsAliveCondition.wait(mLock);
+    mLock.unlock();
+}
+
+
+// --- InputDispatcher::Queue ---
+
+template <typename T>
+uint32_t InputDispatcher::Queue<T>::count() const {
+    uint32_t result = 0;
+    for (const T* entry = head; entry; entry = entry->next) {
+        result += 1;
+    }
+    return result;
+}
+
+
+// --- InputDispatcher::InjectionState ---
+
+InputDispatcher::InjectionState::InjectionState(int32_t injectorPid, int32_t injectorUid) :
+        refCount(1),
+        injectorPid(injectorPid), injectorUid(injectorUid),
+        injectionResult(INPUT_EVENT_INJECTION_PENDING), injectionIsAsync(false),
+        pendingForegroundDispatches(0) {
+}
+
+InputDispatcher::InjectionState::~InjectionState() {
+}
+
+void InputDispatcher::InjectionState::release() {
+    refCount -= 1;
+    if (refCount == 0) {
+        delete this;
+    } else {
+        ALOG_ASSERT(refCount > 0);
+    }
+}
+
+
+// --- InputDispatcher::EventEntry ---
+
+InputDispatcher::EventEntry::EventEntry(int32_t type, nsecs_t eventTime, uint32_t policyFlags) :
+        refCount(1), type(type), eventTime(eventTime), policyFlags(policyFlags),
+        injectionState(NULL), dispatchInProgress(false) {
+}
+
+InputDispatcher::EventEntry::~EventEntry() {
+    releaseInjectionState();
+}
+
+void InputDispatcher::EventEntry::release() {
+    refCount -= 1;
+    if (refCount == 0) {
+        delete this;
+    } else {
+        ALOG_ASSERT(refCount > 0);
+    }
+}
+
+void InputDispatcher::EventEntry::releaseInjectionState() {
+    if (injectionState) {
+        injectionState->release();
+        injectionState = NULL;
+    }
+}
+
+
+// --- InputDispatcher::ConfigurationChangedEntry ---
+
+InputDispatcher::ConfigurationChangedEntry::ConfigurationChangedEntry(nsecs_t eventTime) :
+        EventEntry(TYPE_CONFIGURATION_CHANGED, eventTime, 0) {
+}
+
+InputDispatcher::ConfigurationChangedEntry::~ConfigurationChangedEntry() {
+}
+
+void InputDispatcher::ConfigurationChangedEntry::appendDescription(String8& msg) const {
+    msg.append("ConfigurationChangedEvent()");
+}
+
+
+// --- InputDispatcher::DeviceResetEntry ---
+
+InputDispatcher::DeviceResetEntry::DeviceResetEntry(nsecs_t eventTime, int32_t deviceId) :
+        EventEntry(TYPE_DEVICE_RESET, eventTime, 0),
+        deviceId(deviceId) {
+}
+
+InputDispatcher::DeviceResetEntry::~DeviceResetEntry() {
+}
+
+void InputDispatcher::DeviceResetEntry::appendDescription(String8& msg) const {
+    msg.appendFormat("DeviceResetEvent(deviceId=%d)", deviceId);
+}
+
+
+// --- InputDispatcher::KeyEntry ---
+
+InputDispatcher::KeyEntry::KeyEntry(nsecs_t eventTime,
+        int32_t deviceId, uint32_t source, uint32_t policyFlags, int32_t action,
+        int32_t flags, int32_t keyCode, int32_t scanCode, int32_t metaState,
+        int32_t repeatCount, nsecs_t downTime) :
+        EventEntry(TYPE_KEY, eventTime, policyFlags),
+        deviceId(deviceId), source(source), action(action), flags(flags),
+        keyCode(keyCode), scanCode(scanCode), metaState(metaState),
+        repeatCount(repeatCount), downTime(downTime),
+        syntheticRepeat(false), interceptKeyResult(KeyEntry::INTERCEPT_KEY_RESULT_UNKNOWN),
+        interceptKeyWakeupTime(0) {
+}
+
+InputDispatcher::KeyEntry::~KeyEntry() {
+}
+
+void InputDispatcher::KeyEntry::appendDescription(String8& msg) const {
+    msg.appendFormat("KeyEvent(action=%d, deviceId=%d, source=0x%08x)",
+            action, deviceId, source);
+}
+
+void InputDispatcher::KeyEntry::recycle() {
+    releaseInjectionState();
+
+    dispatchInProgress = false;
+    syntheticRepeat = false;
+    interceptKeyResult = KeyEntry::INTERCEPT_KEY_RESULT_UNKNOWN;
+    interceptKeyWakeupTime = 0;
+}
+
+
+// --- InputDispatcher::MotionEntry ---
+
+InputDispatcher::MotionEntry::MotionEntry(nsecs_t eventTime,
+        int32_t deviceId, uint32_t source, uint32_t policyFlags, int32_t action, int32_t flags,
+        int32_t metaState, int32_t buttonState,
+        int32_t edgeFlags, float xPrecision, float yPrecision,
+        nsecs_t downTime, int32_t displayId, uint32_t pointerCount,
+        const PointerProperties* pointerProperties, const PointerCoords* pointerCoords) :
+        EventEntry(TYPE_MOTION, eventTime, policyFlags),
+        eventTime(eventTime),
+        deviceId(deviceId), source(source), action(action), flags(flags),
+        metaState(metaState), buttonState(buttonState), edgeFlags(edgeFlags),
+        xPrecision(xPrecision), yPrecision(yPrecision),
+        downTime(downTime), displayId(displayId), pointerCount(pointerCount) {
+    for (uint32_t i = 0; i < pointerCount; i++) {
+        this->pointerProperties[i].copyFrom(pointerProperties[i]);
+        this->pointerCoords[i].copyFrom(pointerCoords[i]);
+    }
+}
+
+InputDispatcher::MotionEntry::~MotionEntry() {
+}
+
+void InputDispatcher::MotionEntry::appendDescription(String8& msg) const {
+    msg.appendFormat("MotionEvent(action=%d, deviceId=%d, source=0x%08x, displayId=%d)",
+            action, deviceId, source, displayId);
+}
+
+
+// --- InputDispatcher::DispatchEntry ---
+
+volatile int32_t InputDispatcher::DispatchEntry::sNextSeqAtomic;
+
+InputDispatcher::DispatchEntry::DispatchEntry(EventEntry* eventEntry,
+        int32_t targetFlags, float xOffset, float yOffset, float scaleFactor) :
+        seq(nextSeq()),
+        eventEntry(eventEntry), targetFlags(targetFlags),
+        xOffset(xOffset), yOffset(yOffset), scaleFactor(scaleFactor),
+        deliveryTime(0), resolvedAction(0), resolvedFlags(0) {
+    eventEntry->refCount += 1;
+}
+
+InputDispatcher::DispatchEntry::~DispatchEntry() {
+    eventEntry->release();
+}
+
+uint32_t InputDispatcher::DispatchEntry::nextSeq() {
+    // Sequence number 0 is reserved and will never be returned.
+    uint32_t seq;
+    do {
+        seq = android_atomic_inc(&sNextSeqAtomic);
+    } while (!seq);
+    return seq;
+}
+
+
+// --- InputDispatcher::InputState ---
+
+InputDispatcher::InputState::InputState() {
+}
+
+InputDispatcher::InputState::~InputState() {
+}
+
+bool InputDispatcher::InputState::isNeutral() const {
+    return mKeyMementos.isEmpty() && mMotionMementos.isEmpty();
+}
+
+bool InputDispatcher::InputState::isHovering(int32_t deviceId, uint32_t source,
+        int32_t displayId) const {
+    for (size_t i = 0; i < mMotionMementos.size(); i++) {
+        const MotionMemento& memento = mMotionMementos.itemAt(i);
+        if (memento.deviceId == deviceId
+                && memento.source == source
+                && memento.displayId == displayId
+                && memento.hovering) {
+            return true;
+        }
+    }
+    return false;
+}
+
+bool InputDispatcher::InputState::trackKey(const KeyEntry* entry,
+        int32_t action, int32_t flags) {
+    switch (action) {
+    case AKEY_EVENT_ACTION_UP: {
+        if (entry->flags & AKEY_EVENT_FLAG_FALLBACK) {
+            for (size_t i = 0; i < mFallbackKeys.size(); ) {
+                if (mFallbackKeys.valueAt(i) == entry->keyCode) {
+                    mFallbackKeys.removeItemsAt(i);
+                } else {
+                    i += 1;
+                }
+            }
+        }
+        ssize_t index = findKeyMemento(entry);
+        if (index >= 0) {
+            mKeyMementos.removeAt(index);
+            return true;
+        }
+        /* FIXME: We can't just drop the key up event because that prevents creating
+         * popup windows that are automatically shown when a key is held and then
+         * dismissed when the key is released.  The problem is that the popup will
+         * not have received the original key down, so the key up will be considered
+         * to be inconsistent with its observed state.  We could perhaps handle this
+         * by synthesizing a key down but that will cause other problems.
+         *
+         * So for now, allow inconsistent key up events to be dispatched.
+         *
+#if DEBUG_OUTBOUND_EVENT_DETAILS
+        ALOGD("Dropping inconsistent key up event: deviceId=%d, source=%08x, "
+                "keyCode=%d, scanCode=%d",
+                entry->deviceId, entry->source, entry->keyCode, entry->scanCode);
+#endif
+        return false;
+        */
+        return true;
+    }
+
+    case AKEY_EVENT_ACTION_DOWN: {
+        ssize_t index = findKeyMemento(entry);
+        if (index >= 0) {
+            mKeyMementos.removeAt(index);
+        }
+        addKeyMemento(entry, flags);
+        return true;
+    }
+
+    default:
+        return true;
+    }
+}
+
+bool InputDispatcher::InputState::trackMotion(const MotionEntry* entry,
+        int32_t action, int32_t flags) {
+    int32_t actionMasked = action & AMOTION_EVENT_ACTION_MASK;
+    switch (actionMasked) {
+    case AMOTION_EVENT_ACTION_UP:
+    case AMOTION_EVENT_ACTION_CANCEL: {
+        ssize_t index = findMotionMemento(entry, false /*hovering*/);
+        if (index >= 0) {
+            mMotionMementos.removeAt(index);
+            return true;
+        }
+#if DEBUG_OUTBOUND_EVENT_DETAILS
+        ALOGD("Dropping inconsistent motion up or cancel event: deviceId=%d, source=%08x, "
+                "actionMasked=%d",
+                entry->deviceId, entry->source, actionMasked);
+#endif
+        return false;
+    }
+
+    case AMOTION_EVENT_ACTION_DOWN: {
+        ssize_t index = findMotionMemento(entry, false /*hovering*/);
+        if (index >= 0) {
+            mMotionMementos.removeAt(index);
+        }
+        addMotionMemento(entry, flags, false /*hovering*/);
+        return true;
+    }
+
+    case AMOTION_EVENT_ACTION_POINTER_UP:
+    case AMOTION_EVENT_ACTION_POINTER_DOWN:
+    case AMOTION_EVENT_ACTION_MOVE: {
+        ssize_t index = findMotionMemento(entry, false /*hovering*/);
+        if (index >= 0) {
+            MotionMemento& memento = mMotionMementos.editItemAt(index);
+            memento.setPointers(entry);
+            return true;
+        }
+        if (actionMasked == AMOTION_EVENT_ACTION_MOVE
+                && (entry->source & (AINPUT_SOURCE_CLASS_JOYSTICK
+                        | AINPUT_SOURCE_CLASS_NAVIGATION))) {
+            // Joysticks and trackballs can send MOVE events without corresponding DOWN or UP.
+            return true;
+        }
+#if DEBUG_OUTBOUND_EVENT_DETAILS
+        ALOGD("Dropping inconsistent motion pointer up/down or move event: "
+                "deviceId=%d, source=%08x, actionMasked=%d",
+                entry->deviceId, entry->source, actionMasked);
+#endif
+        return false;
+    }
+
+    case AMOTION_EVENT_ACTION_HOVER_EXIT: {
+        ssize_t index = findMotionMemento(entry, true /*hovering*/);
+        if (index >= 0) {
+            mMotionMementos.removeAt(index);
+            return true;
+        }
+#if DEBUG_OUTBOUND_EVENT_DETAILS
+        ALOGD("Dropping inconsistent motion hover exit event: deviceId=%d, source=%08x",
+                entry->deviceId, entry->source);
+#endif
+        return false;
+    }
+
+    case AMOTION_EVENT_ACTION_HOVER_ENTER:
+    case AMOTION_EVENT_ACTION_HOVER_MOVE: {
+        ssize_t index = findMotionMemento(entry, true /*hovering*/);
+        if (index >= 0) {
+            mMotionMementos.removeAt(index);
+        }
+        addMotionMemento(entry, flags, true /*hovering*/);
+        return true;
+    }
+
+    default:
+        return true;
+    }
+}
+
+ssize_t InputDispatcher::InputState::findKeyMemento(const KeyEntry* entry) const {
+    for (size_t i = 0; i < mKeyMementos.size(); i++) {
+        const KeyMemento& memento = mKeyMementos.itemAt(i);
+        if (memento.deviceId == entry->deviceId
+                && memento.source == entry->source
+                && memento.keyCode == entry->keyCode
+                && memento.scanCode == entry->scanCode) {
+            return i;
+        }
+    }
+    return -1;
+}
+
+ssize_t InputDispatcher::InputState::findMotionMemento(const MotionEntry* entry,
+        bool hovering) const {
+    for (size_t i = 0; i < mMotionMementos.size(); i++) {
+        const MotionMemento& memento = mMotionMementos.itemAt(i);
+        if (memento.deviceId == entry->deviceId
+                && memento.source == entry->source
+                && memento.displayId == entry->displayId
+                && memento.hovering == hovering) {
+            return i;
+        }
+    }
+    return -1;
+}
+
+void InputDispatcher::InputState::addKeyMemento(const KeyEntry* entry, int32_t flags) {
+    mKeyMementos.push();
+    KeyMemento& memento = mKeyMementos.editTop();
+    memento.deviceId = entry->deviceId;
+    memento.source = entry->source;
+    memento.keyCode = entry->keyCode;
+    memento.scanCode = entry->scanCode;
+    memento.metaState = entry->metaState;
+    memento.flags = flags;
+    memento.downTime = entry->downTime;
+    memento.policyFlags = entry->policyFlags;
+}
+
+void InputDispatcher::InputState::addMotionMemento(const MotionEntry* entry,
+        int32_t flags, bool hovering) {
+    mMotionMementos.push();
+    MotionMemento& memento = mMotionMementos.editTop();
+    memento.deviceId = entry->deviceId;
+    memento.source = entry->source;
+    memento.flags = flags;
+    memento.xPrecision = entry->xPrecision;
+    memento.yPrecision = entry->yPrecision;
+    memento.downTime = entry->downTime;
+    memento.displayId = entry->displayId;
+    memento.setPointers(entry);
+    memento.hovering = hovering;
+    memento.policyFlags = entry->policyFlags;
+}
+
+void InputDispatcher::InputState::MotionMemento::setPointers(const MotionEntry* entry) {
+    pointerCount = entry->pointerCount;
+    for (uint32_t i = 0; i < entry->pointerCount; i++) {
+        pointerProperties[i].copyFrom(entry->pointerProperties[i]);
+        pointerCoords[i].copyFrom(entry->pointerCoords[i]);
+    }
+}
+
+void InputDispatcher::InputState::synthesizeCancelationEvents(nsecs_t currentTime,
+        Vector<EventEntry*>& outEvents, const CancelationOptions& options) {
+    for (size_t i = 0; i < mKeyMementos.size(); i++) {
+        const KeyMemento& memento = mKeyMementos.itemAt(i);
+        if (shouldCancelKey(memento, options)) {
+            outEvents.push(new KeyEntry(currentTime,
+                    memento.deviceId, memento.source, memento.policyFlags,
+                    AKEY_EVENT_ACTION_UP, memento.flags | AKEY_EVENT_FLAG_CANCELED,
+                    memento.keyCode, memento.scanCode, memento.metaState, 0, memento.downTime));
+        }
+    }
+
+    for (size_t i = 0; i < mMotionMementos.size(); i++) {
+        const MotionMemento& memento = mMotionMementos.itemAt(i);
+        if (shouldCancelMotion(memento, options)) {
+            outEvents.push(new MotionEntry(currentTime,
+                    memento.deviceId, memento.source, memento.policyFlags,
+                    memento.hovering
+                            ? AMOTION_EVENT_ACTION_HOVER_EXIT
+                            : AMOTION_EVENT_ACTION_CANCEL,
+                    memento.flags, 0, 0, 0,
+                    memento.xPrecision, memento.yPrecision, memento.downTime,
+                    memento.displayId,
+                    memento.pointerCount, memento.pointerProperties, memento.pointerCoords));
+        }
+    }
+}
+
+void InputDispatcher::InputState::clear() {
+    mKeyMementos.clear();
+    mMotionMementos.clear();
+    mFallbackKeys.clear();
+}
+
+void InputDispatcher::InputState::copyPointerStateTo(InputState& other) const {
+    for (size_t i = 0; i < mMotionMementos.size(); i++) {
+        const MotionMemento& memento = mMotionMementos.itemAt(i);
+        if (memento.source & AINPUT_SOURCE_CLASS_POINTER) {
+            for (size_t j = 0; j < other.mMotionMementos.size(); ) {
+                const MotionMemento& otherMemento = other.mMotionMementos.itemAt(j);
+                if (memento.deviceId == otherMemento.deviceId
+                        && memento.source == otherMemento.source
+                        && memento.displayId == otherMemento.displayId) {
+                    other.mMotionMementos.removeAt(j);
+                } else {
+                    j += 1;
+                }
+            }
+            other.mMotionMementos.push(memento);
+        }
+    }
+}
+
+int32_t InputDispatcher::InputState::getFallbackKey(int32_t originalKeyCode) {
+    ssize_t index = mFallbackKeys.indexOfKey(originalKeyCode);
+    return index >= 0 ? mFallbackKeys.valueAt(index) : -1;
+}
+
+void InputDispatcher::InputState::setFallbackKey(int32_t originalKeyCode,
+        int32_t fallbackKeyCode) {
+    ssize_t index = mFallbackKeys.indexOfKey(originalKeyCode);
+    if (index >= 0) {
+        mFallbackKeys.replaceValueAt(index, fallbackKeyCode);
+    } else {
+        mFallbackKeys.add(originalKeyCode, fallbackKeyCode);
+    }
+}
+
+void InputDispatcher::InputState::removeFallbackKey(int32_t originalKeyCode) {
+    mFallbackKeys.removeItem(originalKeyCode);
+}
+
+bool InputDispatcher::InputState::shouldCancelKey(const KeyMemento& memento,
+        const CancelationOptions& options) {
+    if (options.keyCode != -1 && memento.keyCode != options.keyCode) {
+        return false;
+    }
+
+    if (options.deviceId != -1 && memento.deviceId != options.deviceId) {
+        return false;
+    }
+
+    switch (options.mode) {
+    case CancelationOptions::CANCEL_ALL_EVENTS:
+    case CancelationOptions::CANCEL_NON_POINTER_EVENTS:
+        return true;
+    case CancelationOptions::CANCEL_FALLBACK_EVENTS:
+        return memento.flags & AKEY_EVENT_FLAG_FALLBACK;
+    default:
+        return false;
+    }
+}
+
+bool InputDispatcher::InputState::shouldCancelMotion(const MotionMemento& memento,
+        const CancelationOptions& options) {
+    if (options.deviceId != -1 && memento.deviceId != options.deviceId) {
+        return false;
+    }
+
+    switch (options.mode) {
+    case CancelationOptions::CANCEL_ALL_EVENTS:
+        return true;
+    case CancelationOptions::CANCEL_POINTER_EVENTS:
+        return memento.source & AINPUT_SOURCE_CLASS_POINTER;
+    case CancelationOptions::CANCEL_NON_POINTER_EVENTS:
+        return !(memento.source & AINPUT_SOURCE_CLASS_POINTER);
+    default:
+        return false;
+    }
+}
+
+
+// --- InputDispatcher::Connection ---
+
+InputDispatcher::Connection::Connection(const sp<InputChannel>& inputChannel,
+        const sp<InputWindowHandle>& inputWindowHandle, bool monitor) :
+        status(STATUS_NORMAL), inputChannel(inputChannel), inputWindowHandle(inputWindowHandle),
+        monitor(monitor),
+        inputPublisher(inputChannel), inputPublisherBlocked(false) {
+}
+
+InputDispatcher::Connection::~Connection() {
+}
+
+const char* InputDispatcher::Connection::getWindowName() const {
+    if (inputWindowHandle != NULL) {
+        return inputWindowHandle->getName().string();
+    }
+    if (monitor) {
+        return "monitor";
+    }
+    return "?";
+}
+
+const char* InputDispatcher::Connection::getStatusLabel() const {
+    switch (status) {
+    case STATUS_NORMAL:
+        return "NORMAL";
+
+    case STATUS_BROKEN:
+        return "BROKEN";
+
+    case STATUS_ZOMBIE:
+        return "ZOMBIE";
+
+    default:
+        return "UNKNOWN";
+    }
+}
+
+InputDispatcher::DispatchEntry* InputDispatcher::Connection::findWaitQueueEntry(uint32_t seq) {
+    for (DispatchEntry* entry = waitQueue.head; entry != NULL; entry = entry->next) {
+        if (entry->seq == seq) {
+            return entry;
+        }
+    }
+    return NULL;
+}
+
+
+// --- InputDispatcher::CommandEntry ---
+
+InputDispatcher::CommandEntry::CommandEntry(Command command) :
+    command(command), eventTime(0), keyEntry(NULL), userActivityEventType(0),
+    seq(0), handled(false) {
+}
+
+InputDispatcher::CommandEntry::~CommandEntry() {
+}
+
+
+// --- InputDispatcher::TouchState ---
+
+InputDispatcher::TouchState::TouchState() :
+    down(false), split(false), deviceId(-1), source(0), displayId(-1) {
+}
+
+InputDispatcher::TouchState::~TouchState() {
+}
+
+void InputDispatcher::TouchState::reset() {
+    down = false;
+    split = false;
+    deviceId = -1;
+    source = 0;
+    displayId = -1;
+    windows.clear();
+}
+
+void InputDispatcher::TouchState::copyFrom(const TouchState& other) {
+    down = other.down;
+    split = other.split;
+    deviceId = other.deviceId;
+    source = other.source;
+    displayId = other.displayId;
+    windows = other.windows;
+}
+
+void InputDispatcher::TouchState::addOrUpdateWindow(const sp<InputWindowHandle>& windowHandle,
+        int32_t targetFlags, BitSet32 pointerIds) {
+    if (targetFlags & InputTarget::FLAG_SPLIT) {
+        split = true;
+    }
+
+    for (size_t i = 0; i < windows.size(); i++) {
+        TouchedWindow& touchedWindow = windows.editItemAt(i);
+        if (touchedWindow.windowHandle == windowHandle) {
+            touchedWindow.targetFlags |= targetFlags;
+            if (targetFlags & InputTarget::FLAG_DISPATCH_AS_SLIPPERY_EXIT) {
+                touchedWindow.targetFlags &= ~InputTarget::FLAG_DISPATCH_AS_IS;
+            }
+            touchedWindow.pointerIds.value |= pointerIds.value;
+            return;
+        }
+    }
+
+    windows.push();
+
+    TouchedWindow& touchedWindow = windows.editTop();
+    touchedWindow.windowHandle = windowHandle;
+    touchedWindow.targetFlags = targetFlags;
+    touchedWindow.pointerIds = pointerIds;
+}
+
+void InputDispatcher::TouchState::removeWindow(const sp<InputWindowHandle>& windowHandle) {
+    for (size_t i = 0; i < windows.size(); i++) {
+        if (windows.itemAt(i).windowHandle == windowHandle) {
+            windows.removeAt(i);
+            return;
+        }
+    }
+}
+
+void InputDispatcher::TouchState::filterNonAsIsTouchWindows() {
+    for (size_t i = 0 ; i < windows.size(); ) {
+        TouchedWindow& window = windows.editItemAt(i);
+        if (window.targetFlags & (InputTarget::FLAG_DISPATCH_AS_IS
+                | InputTarget::FLAG_DISPATCH_AS_SLIPPERY_ENTER)) {
+            window.targetFlags &= ~InputTarget::FLAG_DISPATCH_MASK;
+            window.targetFlags |= InputTarget::FLAG_DISPATCH_AS_IS;
+            i += 1;
+        } else {
+            windows.removeAt(i);
+        }
+    }
+}
+
+sp<InputWindowHandle> InputDispatcher::TouchState::getFirstForegroundWindowHandle() const {
+    for (size_t i = 0; i < windows.size(); i++) {
+        const TouchedWindow& window = windows.itemAt(i);
+        if (window.targetFlags & InputTarget::FLAG_FOREGROUND) {
+            return window.windowHandle;
+        }
+    }
+    return NULL;
+}
+
+bool InputDispatcher::TouchState::isSlippery() const {
+    // Must have exactly one foreground window.
+    bool haveSlipperyForegroundWindow = false;
+    for (size_t i = 0; i < windows.size(); i++) {
+        const TouchedWindow& window = windows.itemAt(i);
+        if (window.targetFlags & InputTarget::FLAG_FOREGROUND) {
+            if (haveSlipperyForegroundWindow
+                    || !(window.windowHandle->getInfo()->layoutParamsFlags
+                            & InputWindowInfo::FLAG_SLIPPERY)) {
+                return false;
+            }
+            haveSlipperyForegroundWindow = true;
+        }
+    }
+    return haveSlipperyForegroundWindow;
+}
+
+
+// --- InputDispatcherThread ---
+
+InputDispatcherThread::InputDispatcherThread(const sp<InputDispatcherInterface>& dispatcher) :
+        Thread(/*canCallJava*/ true), mDispatcher(dispatcher) {
+}
+
+InputDispatcherThread::~InputDispatcherThread() {
+}
+
+bool InputDispatcherThread::threadLoop() {
+    mDispatcher->dispatchOnce();
+    return true;
+}
+
+} // namespace android