From 795b4074602dea982b6ca6869830352eeeda6f20 Mon Sep 17 00:00:00 2001
From: Joe Onorato <joeo@google.com>
Date: Wed, 20 Apr 2016 15:43:17 -0700
Subject: [PATCH] Add exponential broadcast flood to the BadBehaviorActivity.

Bug: 28196243
Change-Id: I26eb8d5f7f9bcc90bfe5aa52f3d61a44b6105006
---
 apps/Development/res/layout/bad_behavior.xml  |  5 +++
 apps/Development/res/values/strings.xml       |  1 +
 .../development/BadBehaviorActivity.java      | 40 +++++++++++++++++++
 3 files changed, 46 insertions(+)

diff --git a/apps/Development/res/layout/bad_behavior.xml b/apps/Development/res/layout/bad_behavior.xml
index 6415da679..47139ddd9 100644
--- a/apps/Development/res/layout/bad_behavior.xml
+++ b/apps/Development/res/layout/bad_behavior.xml
@@ -78,6 +78,11 @@
                 android:layout_height="wrap_content"
                 android:text="@string/bad_behavior_wedge_system_label" />
 
+        <Button android:id="@+id/bad_behavior_broadcast_flood"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:text="@string/bad_behavior_broadcast_flood" />
+
     </LinearLayout>
 
 </ScrollView>
diff --git a/apps/Development/res/values/strings.xml b/apps/Development/res/values/strings.xml
index d8e7eeabe..5f96d24e7 100644
--- a/apps/Development/res/values/strings.xml
+++ b/apps/Development/res/values/strings.xml
@@ -229,6 +229,7 @@
     <string name="bad_behavior_anr_service_label">ANR starting a Service</string>
     <string name="bad_behavior_anr_system_label">System ANR (in ActivityManager)</string>
     <string name="bad_behavior_wedge_system_label">Wedge system (5 minute system ANR)</string>
+    <string name="bad_behavior_broadcast_flood">Flood the system with broadcasts</string>
 
     <!-- CacheAbuser -->
     <string name="cache_abuser_start_internal_abuse">Quickly abuse internal cache</string>
diff --git a/apps/Development/src/com/android/development/BadBehaviorActivity.java b/apps/Development/src/com/android/development/BadBehaviorActivity.java
index e33c758de..9cce3fdb5 100644
--- a/apps/Development/src/com/android/development/BadBehaviorActivity.java
+++ b/apps/Development/src/com/android/development/BadBehaviorActivity.java
@@ -26,6 +26,7 @@ import android.content.Context;
 import android.content.Intent;
 import android.content.IntentFilter;
 import android.os.Bundle;
+import android.os.Handler;
 import android.os.IBinder;
 import android.os.IPowerManager;
 import android.os.Process;
@@ -38,6 +39,10 @@ import android.widget.Button;
 public class BadBehaviorActivity extends Activity {
     private static final String TAG = "BadBehaviorActivity";
 
+    private static final String BROADCAST_FLOOD = "com.android.development.BROADCAST_FLOOD";
+
+    private Handler mHandler = new Handler();
+
     private static class BadBehaviorException extends RuntimeException {
         BadBehaviorException() {
             super("Whatcha gonna do, whatcha gonna do",
@@ -113,6 +118,25 @@ public class BadBehaviorActivity extends Activity {
         }
     }
 
+    int mFloodBroadcastsSent;
+    int mFloodBroadcastsReceived;
+
+    public class ExponentialReceiver extends BroadcastReceiver {
+        String name;
+
+        @Override
+        public void onReceive(Context context, Intent intent) {
+            final int N = 5;
+            mFloodBroadcastsReceived++;
+            for (int i=0; i<N; i++) {
+                mFloodBroadcastsSent++;
+                Log.i(TAG, this.name + " sent=" + mFloodBroadcastsSent
+                        + " received=" + mFloodBroadcastsReceived);
+                context.sendBroadcast(new Intent(BROADCAST_FLOOD));
+            }
+        }
+    };
+
     @Override
     public void onCreate(Bundle icicle) {
         super.onCreate(icicle);
@@ -240,5 +264,21 @@ public class BadBehaviorActivity extends Activity {
                 startActivity(intent.putExtra("dummy", true));
             }
         });
+
+        Button broadcast_flood = (Button) findViewById(R.id.bad_behavior_broadcast_flood);
+        broadcast_flood.setOnClickListener(new View.OnClickListener() {
+            public void onClick(View v) {
+                // Let's create and register some broadcast receivers
+                IntentFilter filter = new IntentFilter(BROADCAST_FLOOD);
+                for (int i=0; i<30; i++) {
+                    ExponentialReceiver receiver = new ExponentialReceiver();
+                    receiver.name = "ExponentialReceiver " + i;
+                    registerReceiver(receiver, filter);
+                }
+                // Now open the floodgates
+                mFloodBroadcastsSent = 1;
+                sendBroadcast(new Intent(BROADCAST_FLOOD));
+            }
+        });
     }
 }