Add const annotations to dispatcher

These allow us to dump the dispatcher state from other const dispatcher
methods.

Bug: 274073185
Test: m
Change-Id: I483d957b243bca595c147656d8305fdc4f43fb33
diff --git a/services/inputflinger/dispatcher/InputDispatcher.cpp b/services/inputflinger/dispatcher/InputDispatcher.cpp
index e8434be..a6d1810 100644
--- a/services/inputflinger/dispatcher/InputDispatcher.cpp
+++ b/services/inputflinger/dispatcher/InputDispatcher.cpp
@@ -1297,7 +1297,7 @@
             (keyEntry.policyFlags & POLICY_FLAG_PASS_TO_USER);
 }
 
-bool InputDispatcher::isAppSwitchPendingLocked() {
+bool InputDispatcher::isAppSwitchPendingLocked() const {
     return mAppSwitchDueTime != LLONG_MAX;
 }
 
@@ -5411,7 +5411,7 @@
     mReplacedKeys.clear();
 }
 
-void InputDispatcher::logDispatchStateLocked() {
+void InputDispatcher::logDispatchStateLocked() const {
     std::string dump;
     dumpDispatchStateLocked(dump);
 
@@ -5423,7 +5423,7 @@
     }
 }
 
-std::string InputDispatcher::dumpPointerCaptureStateLocked() {
+std::string InputDispatcher::dumpPointerCaptureStateLocked() const {
     std::string dump;
 
     dump += StringPrintf(INDENT "Pointer Capture Requested: %s\n",
@@ -5441,7 +5441,7 @@
     return dump;
 }
 
-void InputDispatcher::dumpDispatchStateLocked(std::string& dump) {
+void InputDispatcher::dumpDispatchStateLocked(std::string& dump) const {
     dump += StringPrintf(INDENT "DispatchEnabled: %s\n", toString(mDispatchEnabled));
     dump += StringPrintf(INDENT "DispatchFrozen: %s\n", toString(mDispatchFrozen));
     dump += StringPrintf(INDENT "InputFilterEnabled: %s\n", toString(mInputFilterEnabled));
@@ -5544,7 +5544,7 @@
     // Dump recently dispatched or dropped events from oldest to newest.
     if (!mRecentQueue.empty()) {
         dump += StringPrintf(INDENT "RecentQueue: length=%zu\n", mRecentQueue.size());
-        for (std::shared_ptr<EventEntry>& entry : mRecentQueue) {
+        for (const std::shared_ptr<EventEntry>& entry : mRecentQueue) {
             dump += INDENT2;
             dump += entry->getDescription();
             dump += StringPrintf(", age=%" PRId64 "ms\n", ns2ms(currentTime - entry->eventTime));
@@ -5567,7 +5567,7 @@
     // Dump inbound events from oldest to newest.
     if (!mInboundQueue.empty()) {
         dump += StringPrintf(INDENT "InboundQueue: length=%zu\n", mInboundQueue.size());
-        for (std::shared_ptr<EventEntry>& entry : mInboundQueue) {
+        for (const std::shared_ptr<EventEntry>& entry : mInboundQueue) {
             dump += INDENT2;
             dump += entry->getDescription();
             dump += StringPrintf(", age=%" PRId64 "ms\n", ns2ms(currentTime - entry->eventTime));
@@ -5649,7 +5649,7 @@
     dump += mLatencyAggregator.dump(INDENT2);
 }
 
-void InputDispatcher::dumpMonitors(std::string& dump, const std::vector<Monitor>& monitors) {
+void InputDispatcher::dumpMonitors(std::string& dump, const std::vector<Monitor>& monitors) const {
     const size_t numMonitors = monitors.size();
     for (size_t i = 0; i < numMonitors; i++) {
         const Monitor& monitor = monitors[i];
diff --git a/services/inputflinger/dispatcher/InputDispatcher.h b/services/inputflinger/dispatcher/InputDispatcher.h
index 4aba24c..76b15e2 100644
--- a/services/inputflinger/dispatcher/InputDispatcher.h
+++ b/services/inputflinger/dispatcher/InputDispatcher.h
@@ -232,7 +232,7 @@
     nsecs_t mAppSwitchDueTime GUARDED_BY(mLock);
 
     bool isAppSwitchKeyEvent(const KeyEntry& keyEntry);
-    bool isAppSwitchPendingLocked() REQUIRES(mLock);
+    bool isAppSwitchPendingLocked() const REQUIRES(mLock);
     void resetPendingAppSwitchLocked(bool handled) REQUIRES(mLock);
 
     // Blocked event latency optimization.  Drops old events when the user intends
@@ -647,10 +647,10 @@
     void resetAndDropEverythingLocked(const char* reason) REQUIRES(mLock);
 
     // Dump state.
-    void dumpDispatchStateLocked(std::string& dump) REQUIRES(mLock);
-    void dumpMonitors(std::string& dump, const std::vector<Monitor>& monitors);
-    void logDispatchStateLocked() REQUIRES(mLock);
-    std::string dumpPointerCaptureStateLocked() REQUIRES(mLock);
+    void dumpDispatchStateLocked(std::string& dump) const REQUIRES(mLock);
+    void dumpMonitors(std::string& dump, const std::vector<Monitor>& monitors) const;
+    void logDispatchStateLocked() const REQUIRES(mLock);
+    std::string dumpPointerCaptureStateLocked() const REQUIRES(mLock);
 
     // Registration.
     void removeMonitorChannelLocked(const sp<IBinder>& connectionToken) REQUIRES(mLock);
diff --git a/services/inputflinger/dispatcher/LatencyAggregator.cpp b/services/inputflinger/dispatcher/LatencyAggregator.cpp
index a5bfc25..96d78c3 100644
--- a/services/inputflinger/dispatcher/LatencyAggregator.cpp
+++ b/services/inputflinger/dispatcher/LatencyAggregator.cpp
@@ -256,7 +256,7 @@
     }
 }
 
-std::string LatencyAggregator::dump(const char* prefix) {
+std::string LatencyAggregator::dump(const char* prefix) const {
     std::string sketchDump = StringPrintf("%s  Sketches:\n", prefix);
     for (size_t i = 0; i < SketchIndex::SIZE; i++) {
         const int64_t numDown = mDownSketches[i]->num_values();
diff --git a/services/inputflinger/dispatcher/LatencyAggregator.h b/services/inputflinger/dispatcher/LatencyAggregator.h
index accfc29..60b6813 100644
--- a/services/inputflinger/dispatcher/LatencyAggregator.h
+++ b/services/inputflinger/dispatcher/LatencyAggregator.h
@@ -56,7 +56,7 @@
      */
     void processTimeline(const InputEventTimeline& timeline) override;
 
-    std::string dump(const char* prefix);
+    std::string dump(const char* prefix) const;
 
     ~LatencyAggregator();
 
diff --git a/services/inputflinger/dispatcher/LatencyTracker.cpp b/services/inputflinger/dispatcher/LatencyTracker.cpp
index 2dd7d3f..b7c36a8 100644
--- a/services/inputflinger/dispatcher/LatencyTracker.cpp
+++ b/services/inputflinger/dispatcher/LatencyTracker.cpp
@@ -165,7 +165,7 @@
     }
 }
 
-std::string LatencyTracker::dump(const char* prefix) {
+std::string LatencyTracker::dump(const char* prefix) const {
     return StringPrintf("%sLatencyTracker:\n", prefix) +
             StringPrintf("%s  mTimelines.size() = %zu\n", prefix, mTimelines.size()) +
             StringPrintf("%s  mEventTimes.size() = %zu\n", prefix, mEventTimes.size());
diff --git a/services/inputflinger/dispatcher/LatencyTracker.h b/services/inputflinger/dispatcher/LatencyTracker.h
index 64dfeef..4212da8 100644
--- a/services/inputflinger/dispatcher/LatencyTracker.h
+++ b/services/inputflinger/dispatcher/LatencyTracker.h
@@ -55,7 +55,7 @@
     void trackGraphicsLatency(int32_t inputEventId, const sp<IBinder>& connectionToken,
                               std::array<nsecs_t, GraphicsTimeline::SIZE> timeline);
 
-    std::string dump(const char* prefix);
+    std::string dump(const char* prefix) const;
 
 private:
     /**