Include watchdog timeout configuration in dumpsys output

Bug: 209932320
Test: dumpsys
Change-Id: I682c6749b0a5c7c25e1ca9109ce187e28d70697f

services/core/java/com/android/server/Watchdog.java

@@ -19,6 +19,8 @@ package com.android.server;
 import static com.android.server.Watchdog.HandlerCheckerAndTimeout.withCustomTimeout;
 import static com.android.server.Watchdog.HandlerCheckerAndTimeout.withDefaultTimeout;
 
+import android.annotation.NonNull;
+import android.annotation.Nullable;
 import android.app.IActivityController;
 import android.content.BroadcastReceiver;
 import android.content.Context;
@@ -43,6 +45,7 @@ import android.os.SystemProperties;
 import android.os.UserHandle;
 import android.provider.Settings;
 import android.sysprop.WatchdogProperties;
+import android.util.Dumpable;
 import android.util.EventLog;
 import android.util.Log;
 import android.util.Slog;
@@ -63,6 +66,7 @@ import java.io.FileNotFoundException;
 import java.io.FileReader;
 import java.io.FileWriter;
 import java.io.IOException;
+import java.io.PrintWriter;
 import java.io.StringWriter;
 import java.util.ArrayList;
 import java.util.Arrays;
@@ -76,7 +80,7 @@ import java.util.concurrent.TimeUnit;
 /**
  * This class calls its monitor every minute. Killing this process if they don't return
  **/
-public class Watchdog {
+public class Watchdog implements Dumpable {
     static final String TAG = "Watchdog";
 
     /** Debug flag. */
@@ -1028,4 +1032,10 @@ public class Watchdog {
         }
         doSysRq('c');
     }
+
+    @Override
+    public void dump(@NonNull PrintWriter pw, @Nullable String[] args) {
+        pw.print("WatchdogTimeoutMillis=");
+        pw.println(mWatchdogTimeoutMillis);
+    }
 }

services/java/com/android/server/SystemServer.java

@@ -1057,6 +1057,7 @@ public final class SystemServer implements Dumpable {
         t.traceBegin("StartWatchdog");
         final Watchdog watchdog = Watchdog.getInstance();
         watchdog.start();
+        mDumper.addDumpable(watchdog);
         t.traceEnd();
 
         Slog.i(TAG, "Reading configuration...");