Merge "Revert "ConnectivityServiceTest: eliminate remaining sleep()""
diff --git a/services/core/java/com/android/server/ConnectivityService.java b/services/core/java/com/android/server/ConnectivityService.java
index 6112267..eafa88f 100644
--- a/services/core/java/com/android/server/ConnectivityService.java
+++ b/services/core/java/com/android/server/ConnectivityService.java
@@ -215,13 +215,6 @@
     // See Settings.Secure.CONNECTIVITY_RELEASE_PENDING_INTENT_DELAY_MS
     private final int mReleasePendingIntentDelayMs;
 
-    // Driver specific constants used to select packets received via
-    // WiFi that caused the phone to exit sleep state. Currently there
-    // is only one kernel implementation so we can get away with
-    // constants.
-    private static final int mWakeupPacketMark = 0x80000000;
-    private static final int mWakeupPacketMask = 0x80000000;
-
     private MockableSystemProperties mSystemProperties;
 
     private Tethering mTethering;
@@ -2410,6 +2403,10 @@
             notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_LOST);
             mKeepaliveTracker.handleStopAllKeepalives(nai,
                     ConnectivityManager.PacketKeepalive.ERROR_INVALID_NETWORK);
+            for (String iface : nai.linkProperties.getAllInterfaceNames()) {
+                // Disable wakeup packet monitoring for each interface.
+                wakeupModifyInterface(iface, nai.networkCapabilities, false);
+            }
             nai.networkMonitor.sendMessage(NetworkMonitor.CMD_NETWORK_DISCONNECTED);
             mNetworkAgentInfos.remove(msg.replyTo);
             updateClat(null, nai.linkProperties, nai);
@@ -4532,22 +4529,35 @@
         }
     }
 
-    private void wakeupAddInterface(String iface, NetworkCapabilities caps) throws RemoteException {
+    private void wakeupModifyInterface(String iface, NetworkCapabilities caps, boolean add) {
         // Marks are only available on WiFi interaces. Checking for
         // marks on unsupported interfaces is harmless.
         if (!caps.hasTransport(NetworkCapabilities.TRANSPORT_WIFI)) {
             return;
         }
-        mNetd.getNetdService().wakeupAddInterface(
-            iface, "iface:" + iface, mWakeupPacketMark, mWakeupPacketMask);
-    }
 
-    private void wakeupDelInterface(String iface, NetworkCapabilities caps) throws RemoteException {
-        if (!caps.hasTransport(NetworkCapabilities.TRANSPORT_WIFI)) {
+        int mark = mContext.getResources().getInteger(
+            com.android.internal.R.integer.config_networkWakeupPacketMark);
+        int mask = mContext.getResources().getInteger(
+            com.android.internal.R.integer.config_networkWakeupPacketMask);
+
+        // Mask/mark of zero will not detect anything interesting.
+        // Don't install rules unless both values are nonzero.
+        if (mark == 0 || mask == 0) {
             return;
         }
-        mNetd.getNetdService().wakeupDelInterface(
-            iface, "iface:" + iface, mWakeupPacketMark, mWakeupPacketMask);
+
+        final String prefix = "iface:" + iface;
+        try {
+            if (add) {
+                mNetd.getNetdService().wakeupAddInterface(iface, prefix, mark, mask);
+            } else {
+                mNetd.getNetdService().wakeupDelInterface(iface, prefix, mark, mask);
+            }
+        } catch (Exception e) {
+            loge("Exception modifying wakeup packet monitoring: " + e);
+        }
+
     }
 
     private void updateInterfaces(LinkProperties newLp, LinkProperties oldLp, int netId,
@@ -4562,7 +4572,7 @@
             try {
                 if (DBG) log("Adding iface " + iface + " to network " + netId);
                 mNetd.addInterfaceToNetwork(iface, netId);
-                wakeupAddInterface(iface, caps);
+                wakeupModifyInterface(iface, caps, true);
             } catch (Exception e) {
                 loge("Exception adding interface: " + e);
             }
@@ -4570,8 +4580,8 @@
         for (String iface : interfaceDiff.removed) {
             try {
                 if (DBG) log("Removing iface " + iface + " from network " + netId);
+                wakeupModifyInterface(iface, caps, false);
                 mNetd.removeInterfaceFromNetwork(iface, netId);
-                wakeupDelInterface(iface, caps);
             } catch (Exception e) {
                 loge("Exception removing interface: " + e);
             }
diff --git a/tests/net/java/android/net/nsd/NsdManagerTest.java b/tests/net/java/android/net/nsd/NsdManagerTest.java
index adf6998..f77608f 100644
--- a/tests/net/java/android/net/nsd/NsdManagerTest.java
+++ b/tests/net/java/android/net/nsd/NsdManagerTest.java
@@ -349,7 +349,6 @@
                 chan.connect(mContext, this, msg.replyTo);
                 chan.sendMessage(AsyncChannel.CMD_CHANNEL_FULLY_CONNECTED);
             }
-
         }
 
         public static MockServiceHandler create(Context context) {
diff --git a/tests/net/java/com/android/server/ConnectivityServiceTest.java b/tests/net/java/com/android/server/ConnectivityServiceTest.java
index dda2601..09b9823 100644
--- a/tests/net/java/com/android/server/ConnectivityServiceTest.java
+++ b/tests/net/java/com/android/server/ConnectivityServiceTest.java
@@ -24,6 +24,8 @@
 import static android.net.ConnectivityManager.getNetworkTypeName;
 import static android.net.NetworkCapabilities.*;
 
+import static com.android.internal.util.TestUtils.waitForIdleHandler;
+
 import static org.mockito.Mockito.anyBoolean;
 import static org.mockito.Mockito.anyInt;
 import static org.mockito.Mockito.eq;
@@ -213,20 +215,8 @@
         }
     }
 
-    /**
-     * Block until the given handler becomes idle, or until timeoutMs has passed.
-     */
-    private static void waitForIdleHandler(HandlerThread handlerThread, int timeoutMs) {
-        final ConditionVariable cv = new ConditionVariable();
-        final Handler handler = new Handler(handlerThread.getLooper());
-        handler.post(() -> cv.open());
-        if (!cv.block(timeoutMs)) {
-            fail("HandlerThread " + handlerThread.getName() +
-                    " did not become idle after " + timeoutMs + " ms");
-        }
-    }
-
-    public void waitForIdle(int timeoutMs) {
+    public void waitForIdle(int timeoutMsAsInt) {
+        long timeoutMs = timeoutMsAsInt;
         waitForIdleHandler(mService.mHandlerThread, timeoutMs);
         waitForIdle(mCellNetworkAgent, timeoutMs);
         waitForIdle(mWiFiNetworkAgent, timeoutMs);
@@ -234,7 +224,7 @@
         waitForIdleHandler(mService.mHandlerThread, timeoutMs);
     }
 
-    public void waitForIdle(MockNetworkAgent agent, int timeoutMs) {
+    public void waitForIdle(MockNetworkAgent agent, long timeoutMs) {
         if (agent == null) {
             return;
         }
diff --git a/tests/net/java/com/android/server/net/NetworkStatsObserversTest.java b/tests/net/java/com/android/server/net/NetworkStatsObserversTest.java
index 92dcdac..2be5dae 100644
--- a/tests/net/java/com/android/server/net/NetworkStatsObserversTest.java
+++ b/tests/net/java/com/android/server/net/NetworkStatsObserversTest.java
@@ -27,6 +27,8 @@
 import static android.net.TrafficStats.MB_IN_BYTES;
 import static android.text.format.DateUtils.MINUTE_IN_MILLIS;
 
+import static com.android.internal.util.TestUtils.waitForIdleHandler;
+
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertTrue;
 import static org.junit.Assert.fail;
@@ -56,7 +58,6 @@
 
 import com.android.internal.net.VpnInfo;
 import com.android.server.net.NetworkStatsService;
-import com.android.server.net.NetworkStatsServiceTest.IdleableHandlerThread;
 import com.android.server.net.NetworkStatsServiceTest.LatchedHandler;
 
 import java.util.ArrayList;
@@ -102,7 +103,7 @@
 
     private long mElapsedRealtime;
 
-    private IdleableHandlerThread mObserverHandlerThread;
+    private HandlerThread mObserverHandlerThread;
     private Handler mObserverNoopHandler;
 
     private LatchedHandler mHandler;
@@ -118,7 +119,7 @@
     public void setUp() throws Exception {
         MockitoAnnotations.initMocks(this);
 
-        mObserverHandlerThread = new IdleableHandlerThread("HandlerThread");
+        mObserverHandlerThread = new HandlerThread("HandlerThread");
         mObserverHandlerThread.start();
         final Looper observerLooper = mObserverHandlerThread.getLooper();
         mStatsObservers = new NetworkStatsObservers() {
@@ -319,7 +320,7 @@
                 xtSnapshot, uidSnapshot, mActiveIfaces, mActiveUidIfaces,
                 VPN_INFO, TEST_START);
         waitForObserverToIdle();
-        assertEquals(NetworkStatsManager.CALLBACK_LIMIT_REACHED, mHandler.mLastMessageType);
+        assertEquals(NetworkStatsManager.CALLBACK_LIMIT_REACHED, mHandler.lastMessageType);
     }
 
     @Test
@@ -356,7 +357,7 @@
                 xtSnapshot, uidSnapshot, mActiveIfaces, mActiveUidIfaces,
                 VPN_INFO, TEST_START);
         waitForObserverToIdle();
-        assertEquals(NetworkStatsManager.CALLBACK_LIMIT_REACHED, mHandler.mLastMessageType);
+        assertEquals(NetworkStatsManager.CALLBACK_LIMIT_REACHED, mHandler.lastMessageType);
     }
 
     @Test
@@ -429,7 +430,7 @@
                 xtSnapshot, uidSnapshot, mActiveIfaces, mActiveUidIfaces,
                 VPN_INFO, TEST_START);
         waitForObserverToIdle();
-        assertEquals(NetworkStatsManager.CALLBACK_LIMIT_REACHED, mHandler.mLastMessageType);
+        assertEquals(NetworkStatsManager.CALLBACK_LIMIT_REACHED, mHandler.lastMessageType);
     }
 
     @Test
@@ -470,19 +471,7 @@
     }
 
     private void waitForObserverToIdle() {
-        waitForIdleLooper(mObserverHandlerThread.getLooper(), WAIT_TIMEOUT_MS);
-        waitForIdleLooper(mHandler.getLooper(), WAIT_TIMEOUT_MS);
+        waitForIdleHandler(mObserverHandlerThread, WAIT_TIMEOUT_MS);
+        waitForIdleHandler(mHandler, WAIT_TIMEOUT_MS);
     }
-
-    // TODO: unify with ConnectivityService.waitForIdleHandler and
-    // NetworkServiceStatsTest.IdleableHandlerThread
-    private static void waitForIdleLooper(Looper looper, long timeoutMs) {
-        final ConditionVariable cv = new ConditionVariable();
-        final Handler handler = new Handler(looper);
-        handler.post(() -> cv.open());
-        if (!cv.block(timeoutMs)) {
-            fail("Looper did not become idle after " + timeoutMs + " ms");
-        }
-    }
-
 }
diff --git a/tests/net/java/com/android/server/net/NetworkStatsServiceTest.java b/tests/net/java/com/android/server/net/NetworkStatsServiceTest.java
index 029693f..feb46d3 100644
--- a/tests/net/java/com/android/server/net/NetworkStatsServiceTest.java
+++ b/tests/net/java/com/android/server/net/NetworkStatsServiceTest.java
@@ -45,6 +45,7 @@
 import static android.text.format.DateUtils.WEEK_IN_MILLIS;
 
 import static com.android.server.net.NetworkStatsService.ACTION_NETWORK_STATS_POLL;
+import static com.android.internal.util.TestUtils.waitForIdleHandler;
 
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertNotNull;
@@ -154,7 +155,7 @@
     private @Mock IConnectivityManager mConnManager;
     private @Mock IBinder mBinder;
     private @Mock AlarmManager mAlarmManager;
-    private IdleableHandlerThread mHandlerThread;
+    private HandlerThread mHandlerThread;
     private Handler mHandler;
 
     private NetworkStatsService mService;
@@ -181,7 +182,7 @@
                 mServiceContext, mNetManager, mAlarmManager, wakeLock, mTime,
                 TelephonyManager.getDefault(), mSettings, new NetworkStatsObservers(),
                 mStatsDir, getBaseDir(mStatsDir));
-        mHandlerThread = new IdleableHandlerThread("HandlerThread");
+        mHandlerThread = new HandlerThread("HandlerThread");
         mHandlerThread.start();
         Handler.Callback callback = new NetworkStatsService.HandlerCallback(mService);
         mHandler = new Handler(mHandlerThread.getLooper(), callback);
@@ -886,7 +887,7 @@
 
         // Send dummy message to make sure that any previous message has been handled
         mHandler.sendMessage(mHandler.obtainMessage(-1));
-        mHandlerThread.waitForIdle(WAIT_TIMEOUT);
+        waitForIdleHandler(mHandler, WAIT_TIMEOUT);
 
 
 
@@ -908,7 +909,7 @@
         assertNetworkTotal(sTemplateWifi, 1024L, 1L, 2048L, 2L, 0);
 
         // make sure callback has not being called
-        assertEquals(INVALID_TYPE, latchedHandler.mLastMessageType);
+        assertEquals(INVALID_TYPE, latchedHandler.lastMessageType);
 
         // and bump forward again, with counters going higher. this is
         // important, since it will trigger the data usage callback
@@ -926,7 +927,7 @@
 
         // Wait for the caller to ack receipt of CALLBACK_LIMIT_REACHED
         assertTrue(cv.block(WAIT_TIMEOUT));
-        assertEquals(NetworkStatsManager.CALLBACK_LIMIT_REACHED, latchedHandler.mLastMessageType);
+        assertEquals(NetworkStatsManager.CALLBACK_LIMIT_REACHED, latchedHandler.lastMessageType);
         cv.close();
 
         // Allow binder to disconnect
@@ -937,7 +938,7 @@
 
         // Wait for the caller to ack receipt of CALLBACK_RELEASED
         assertTrue(cv.block(WAIT_TIMEOUT));
-        assertEquals(NetworkStatsManager.CALLBACK_RELEASED, latchedHandler.mLastMessageType);
+        assertEquals(NetworkStatsManager.CALLBACK_RELEASED, latchedHandler.lastMessageType);
 
         // Make sure that the caller binder gets disconnected
         verify(mBinder).unlinkToDeath(any(IBinder.DeathRecipient.class), anyInt());
@@ -1203,12 +1204,12 @@
         mServiceContext.sendBroadcast(new Intent(ACTION_NETWORK_STATS_POLL));
         // Send dummy message to make sure that any previous message has been handled
         mHandler.sendMessage(mHandler.obtainMessage(-1));
-        mHandlerThread.waitForIdle(WAIT_TIMEOUT);
+        waitForIdleHandler(mHandler, WAIT_TIMEOUT);
     }
 
     static class LatchedHandler extends Handler {
         private final ConditionVariable mCv;
-        int mLastMessageType = INVALID_TYPE;
+        int lastMessageType = INVALID_TYPE;
 
         LatchedHandler(Looper looper, ConditionVariable cv) {
             super(looper);
@@ -1217,49 +1218,9 @@
 
         @Override
         public void handleMessage(Message msg) {
-            mLastMessageType = msg.what;
+            lastMessageType = msg.what;
             mCv.open();
             super.handleMessage(msg);
         }
     }
-
-    /**
-     * A subclass of HandlerThread that allows callers to wait for it to become idle. waitForIdle
-     * will return immediately if the handler is already idle.
-     */
-    static class IdleableHandlerThread extends HandlerThread {
-        private IdleHandler mIdleHandler;
-
-        public IdleableHandlerThread(String name) {
-            super(name);
-        }
-
-        public void waitForIdle(long timeoutMs) {
-            final ConditionVariable cv = new ConditionVariable();
-            final MessageQueue queue = getLooper().getQueue();
-
-            synchronized (queue) {
-                if (queue.isIdle()) {
-                    return;
-                }
-
-                assertNull("BUG: only one idle handler allowed", mIdleHandler);
-                mIdleHandler = new IdleHandler() {
-                    public boolean queueIdle() {
-                        cv.open();
-                        mIdleHandler = null;
-                        return false;  // Remove the handler.
-                    }
-                };
-                queue.addIdleHandler(mIdleHandler);
-            }
-
-            if (!cv.block(timeoutMs)) {
-                fail("HandlerThread " + getName() + " did not become idle after " + timeoutMs
-                        + " ms");
-                queue.removeIdleHandler(mIdleHandler);
-            }
-        }
-    }
-
 }