From 673d7fa0c37e929eeef9a9411a556865468819ec Mon Sep 17 00:00:00 2001
From: akwizgran <michael@briarproject.org>
Date: Sat, 4 May 2013 01:25:30 +0100
Subject: [PATCH] Moved lifecycle management into briar-core and reconfigured
 executors.

CryptoExecutor and DatabaseExecutor now use bounded thread pools with
unbounded queues, since running too many tasks in parallel is likely to
harm performance; IncomingConnectionExecutor, PluginExecutor and
ReliabilityExecutor use unbounded thread pools with direct handoff,
since their tasks may run indefinitely. There are no longer any bounded
executors, and all executors discard tasks when shutting down, which
fixes issue #3612189.

Responsibility for starting and stopping services has been moved from
BriarService in briar-android to LifecycleManagerImpl in briar-core.
However, BriarService is still responsible for stopping the
Android-specific executors, which is ugly. It would be better if
executors registered themselves with LifecycleManager.
---
 .../net/sf/briar/android/AndroidModule.java   |  28 +++--
 .../net/sf/briar/android/BriarService.java    | 100 ++++-----------
 .../sf/briar/android/HomeScreenActivity.java  |  20 +--
 .../sf/briar/android/blogs/BlogActivity.java  |  19 +--
 .../briar/android/blogs/BlogListActivity.java |  23 +---
 .../android/blogs/ConfigureBlogActivity.java  |  21 +---
 .../android/blogs/CreateBlogActivity.java     |  21 +---
 .../android/blogs/ManageBlogsActivity.java    |  19 +--
 .../android/blogs/ReadBlogPostActivity.java   |  21 +---
 .../android/blogs/WriteBlogPostActivity.java  |  23 +---
 .../android/contact/ContactListActivity.java  |  19 +--
 .../groups/ConfigureGroupActivity.java        |  21 +---
 .../android/groups/CreateGroupActivity.java   |  21 +---
 .../briar/android/groups/GroupActivity.java   |  19 +--
 .../android/groups/GroupListActivity.java     |  23 +---
 .../android/groups/ManageGroupsActivity.java  |  19 +--
 .../android/groups/ReadGroupPostActivity.java |  23 +---
 .../groups/WriteGroupPostActivity.java        |  23 +---
 .../identity/CreateIdentityActivity.java      |  20 +--
 .../invitation/AddContactActivity.java        |  14 +--
 .../messages/ConversationActivity.java        |  19 +--
 .../messages/ConversationListActivity.java    |  21 +---
 .../messages/ReadPrivateMessageActivity.java  |  21 +---
 .../messages/WritePrivateMessageActivity.java |  23 +---
 .../briar/api/lifecycle/LifecycleManager.java |  19 +++
 .../api}/reliability/ReliabilityExecutor.java |   4 +-
 .../transport/IncomingConnectionExecutor.java |   4 +-
 .../src/net/sf/briar/crypto/CryptoModule.java |  34 ++---
 .../src/net/sf/briar/db/DatabaseModule.java   |  30 ++---
 .../briar/lifecycle/LifecycleManagerImpl.java | 116 ++++++++++++++++++
 .../sf/briar/lifecycle/LifecycleModule.java   |   4 +
 .../sf/briar/plugins/JavaSePluginsModule.java |   6 +-
 .../sf/briar/plugins/PluginManagerImpl.java   |  14 +--
 .../net/sf/briar/plugins/PluginsModule.java   |  23 +++-
 .../src/net/sf/briar/plugins/PollerImpl.java  |   8 +-
 .../ReliabilityLayerFactoryImpl.java          |   1 +
 .../briar/reliability/ReliabilityModule.java  |  25 +++-
 .../transport/ConnectionDispatcherImpl.java   |   1 +
 .../sf/briar/transport/TransportModule.java   |  23 +++-
 .../net/sf/briar/util/BoundedExecutor.java    |  58 ---------
 .../net/sf/briar/ProtocolIntegrationTest.java |  11 +-
 .../src/net/sf/briar/TestUiModule.java        |  24 ++++
 .../SimplexMessagingIntegrationTest.java      |  14 ++-
 .../briar/plugins/PluginManagerImplTest.java  |  13 +-
 44 files changed, 431 insertions(+), 582 deletions(-)
 create mode 100644 briar-api/src/net/sf/briar/api/lifecycle/LifecycleManager.java
 rename {briar-core/src/net/sf/briar => briar-api/src/net/sf/briar/api}/reliability/ReliabilityExecutor.java (82%)
 rename {briar-core/src/net/sf/briar => briar-api/src/net/sf/briar/api}/transport/IncomingConnectionExecutor.java (82%)
 create mode 100644 briar-core/src/net/sf/briar/lifecycle/LifecycleManagerImpl.java
 delete mode 100644 briar-core/src/net/sf/briar/util/BoundedExecutor.java
 create mode 100644 briar-tests/src/net/sf/briar/TestUiModule.java

diff --git a/briar-android/src/net/sf/briar/android/AndroidModule.java b/briar-android/src/net/sf/briar/android/AndroidModule.java
index ceac1c7a43..ee700f8208 100644
--- a/briar-android/src/net/sf/briar/android/AndroidModule.java
+++ b/briar-android/src/net/sf/briar/android/AndroidModule.java
@@ -1,11 +1,16 @@
 package net.sf.briar.android;
 
+import static java.util.concurrent.TimeUnit.SECONDS;
+
 import java.util.Arrays;
 import java.util.Collection;
 import java.util.Collections;
+import java.util.concurrent.BlockingQueue;
 import java.util.concurrent.Executor;
 import java.util.concurrent.ExecutorService;
-import java.util.concurrent.Executors;
+import java.util.concurrent.LinkedBlockingQueue;
+import java.util.concurrent.RejectedExecutionHandler;
+import java.util.concurrent.ThreadPoolExecutor;
 
 import net.sf.briar.api.android.AndroidExecutor;
 import net.sf.briar.api.android.DatabaseUiExecutor;
@@ -34,15 +39,22 @@ public class AndroidModule extends AbstractModule {
 		bind(AndroidExecutor.class).to(AndroidExecutorImpl.class);
 		bind(ReferenceManager.class).to(ReferenceManagerImpl.class).in(
 				Singleton.class);
-		// Use a single thread so DB accesses from the UI don't overlap, with
-		// an unbounded queue so submissions don't block
-		bind(Executor.class).annotatedWith(DatabaseUiExecutor.class).toInstance(
-				Executors.newSingleThreadExecutor());
+		// The queue is unbounded, so tasks can be dependent
+		BlockingQueue<Runnable> queue = new LinkedBlockingQueue<Runnable>();
+		// Discard tasks that are submitted during shutdown
+		RejectedExecutionHandler policy =
+				new ThreadPoolExecutor.DiscardPolicy();
+		// Use a single thread so DB accesses from the UI don't overlap
+		ExecutorService e = new ThreadPoolExecutor(1, 1, 60, SECONDS, queue,
+				policy);
+		bind(Executor.class).annotatedWith(
+				DatabaseUiExecutor.class).toInstance(e);
+		bind(ExecutorService.class).annotatedWith(
+				DatabaseUiExecutor.class).toInstance(e);
 	}
 
 	@Provides
-	SimplexPluginConfig getSimplexPluginConfig(
-			@PluginExecutor ExecutorService pluginExecutor) {
+	SimplexPluginConfig getSimplexPluginConfig() {
 		return new SimplexPluginConfig() {
 			public Collection<SimplexPluginFactory> getFactories() {
 				return Collections.emptyList();
@@ -52,7 +64,7 @@ public class AndroidModule extends AbstractModule {
 
 	@Provides
 	DuplexPluginConfig getDuplexPluginConfig(
-			@PluginExecutor ExecutorService pluginExecutor,
+			@PluginExecutor Executor pluginExecutor,
 			AndroidExecutor androidExecutor, Context appContext,
 			CryptoComponent crypto, ShutdownManager shutdownManager) {
 		DuplexPluginFactory droidtooth = new DroidtoothPluginFactory(
diff --git a/briar-android/src/net/sf/briar/android/BriarService.java b/briar-android/src/net/sf/briar/android/BriarService.java
index 3582efc54f..5cbc516a2b 100644
--- a/briar-android/src/net/sf/briar/android/BriarService.java
+++ b/briar-android/src/net/sf/briar/android/BriarService.java
@@ -3,18 +3,15 @@ package net.sf.briar.android;
 import static android.app.PendingIntent.FLAG_ONE_SHOT;
 import static android.content.Intent.FLAG_ACTIVITY_CLEAR_TOP;
 import static java.util.logging.Level.INFO;
-import static java.util.logging.Level.WARNING;
 
-import java.io.IOException;
 import java.util.concurrent.CountDownLatch;
+import java.util.concurrent.ExecutorService;
 import java.util.logging.Logger;
 
 import net.sf.briar.R;
-import net.sf.briar.api.crypto.KeyManager;
-import net.sf.briar.api.db.DatabaseComponent;
-import net.sf.briar.api.db.DatabaseConfig;
-import net.sf.briar.api.db.DbException;
-import net.sf.briar.api.plugins.PluginManager;
+import net.sf.briar.api.android.AndroidExecutor;
+import net.sf.briar.api.android.DatabaseUiExecutor;
+import net.sf.briar.api.lifecycle.LifecycleManager;
 import roboguice.service.RoboService;
 import android.app.PendingIntent;
 import android.content.ComponentName;
@@ -31,15 +28,12 @@ public class BriarService extends RoboService {
 	private static final Logger LOG =
 			Logger.getLogger(BriarService.class.getName());
 
-	private final CountDownLatch dbLatch = new CountDownLatch(1);
-	private final CountDownLatch startupLatch = new CountDownLatch(1);
-	private final CountDownLatch shutdownLatch = new CountDownLatch(1);
 	private final Binder binder = new BriarBinder();
 
-	@Inject private DatabaseConfig databaseConfig = null;
-	@Inject private DatabaseComponent db = null;
-	@Inject private KeyManager keyManager = null;
-	@Inject private PluginManager pluginManager = null;
+	// Fields that are accessed from background threads must be volatile
+	@Inject private volatile LifecycleManager lifecycleManager;
+	@Inject private volatile AndroidExecutor androidExecutor;
+	@Inject @DatabaseUiExecutor private volatile ExecutorService dbUiExecutor;
 
 	@Override
 	public void onCreate() {
@@ -63,7 +57,7 @@ public class BriarService extends RoboService {
 		new Thread() {
 			@Override
 			public void run() {
-				startServices();
+				lifecycleManager.startServices();
 			}
 		}.start();
 	}
@@ -71,11 +65,11 @@ public class BriarService extends RoboService {
 	@Override
 	public int onStartCommand(Intent intent, int flags, int startId) {
 		if(LOG.isLoggable(INFO)) LOG.info("Started");
-		return START_STICKY;
+		return START_NOT_STICKY; // Don't restart automatically if killed
 	}
 
-	@Override
 	public IBinder onBind(Intent intent) {
+		if(LOG.isLoggable(INFO)) LOG.info("Bound");
 		return binder;
 	}
 
@@ -87,71 +81,38 @@ public class BriarService extends RoboService {
 		new Thread() {
 			@Override
 			public void run() {
-				stopServices();
+				// FIXME: This is ugly - executors should register themselves
+				// with the lifecycle manager
+				androidExecutor.shutdown();
+				dbUiExecutor.shutdown();
+				lifecycleManager.stopServices();
 			}
 		}.start();
 	}
 
-	private void startServices() {
-		if(databaseConfig.getEncryptionKey() == null)
-			throw new IllegalStateException();
-		try {
-			if(LOG.isLoggable(INFO)) LOG.info("Starting");
-			boolean reopened = db.open();
-			if(LOG.isLoggable(INFO)) {
-				if(reopened) LOG.info("Database reopened");
-				else LOG.info("Database created");
-			}
-			dbLatch.countDown();
-			keyManager.start();
-			if(LOG.isLoggable(INFO)) LOG.info("Key manager started");
-			int pluginsStarted = pluginManager.start();
-			if(LOG.isLoggable(INFO))
-				LOG.info(pluginsStarted + " plugins started");
-			startupLatch.countDown();
-		} catch(DbException e) {
-			if(LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
-		} catch(IOException e) {
-			if(LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
-		}
-	}
-
-	private void stopServices() {
-		try {
-			if(LOG.isLoggable(INFO)) LOG.info("Shutting down");
-			int pluginsStopped = pluginManager.stop();
-			if(LOG.isLoggable(INFO))
-				LOG.info(pluginsStopped + " plugins stopped");
-			keyManager.stop();
-			if(LOG.isLoggable(INFO)) LOG.info("Key manager stopped");
-			db.close();
-			if(LOG.isLoggable(INFO)) LOG.info("Database closed");
-			shutdownLatch.countDown();
-		} catch(DbException e) {
-			if(LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
-		} catch(IOException e) {
-			if(LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
-		}
-	}
-
+	/** Waits for the database to be opened before returning. */
 	public void waitForDatabase() throws InterruptedException {
-		dbLatch.await();
+		lifecycleManager.waitForDatabase();
 	}
 
+	/** Waits for all services to start before returning. */
 	public void waitForStartup() throws InterruptedException {
-		startupLatch.await();
+		lifecycleManager.waitForStartup();
 	}
 
+	/** Waits for all services to stop before returning. */
 	public void waitForShutdown() throws InterruptedException {
-		shutdownLatch.await();
+		lifecycleManager.waitForShutdown();
 	}
 
+	/** Starts the shutdown process. */
 	public void shutdown() {
-		stopSelf();
+		stopSelf(); // This will call onDestroy()
 	}
 
 	public class BriarBinder extends Binder {
 
+		/** Returns the bound service. */
 		public BriarService getService() {
 			return BriarService.this;
 		}
@@ -170,19 +131,10 @@ public class BriarService extends RoboService {
 
 		public void onServiceDisconnected(ComponentName name) {}
 
+		/** Waits for the service to connect and returns its binder. */
 		public IBinder waitForBinder() throws InterruptedException {
 			binderLatch.await();
 			return binder;
 		}
-
-		public void waitForDatabase() throws InterruptedException {
-			waitForBinder();
-			((BriarBinder) binder).getService().waitForDatabase();
-		}
-
-		public void waitForStartup() throws InterruptedException {
-			waitForBinder();
-			((BriarBinder) binder).getService().waitForStartup();
-		}
 	}
 }
diff --git a/briar-android/src/net/sf/briar/android/HomeScreenActivity.java b/briar-android/src/net/sf/briar/android/HomeScreenActivity.java
index ef7ecd0a5b..354d2d1b23 100644
--- a/briar-android/src/net/sf/briar/android/HomeScreenActivity.java
+++ b/briar-android/src/net/sf/briar/android/HomeScreenActivity.java
@@ -35,6 +35,7 @@ import net.sf.briar.api.crypto.CryptoExecutor;
 import net.sf.briar.api.db.DatabaseComponent;
 import net.sf.briar.api.db.DatabaseConfig;
 import net.sf.briar.api.db.DbException;
+import net.sf.briar.api.lifecycle.LifecycleManager;
 import net.sf.briar.util.StringUtils;
 import roboguice.activity.RoboActivity;
 import android.content.Intent;
@@ -70,18 +71,19 @@ public class HomeScreenActivity extends RoboActivity {
 	private final BriarServiceConnection serviceConnection =
 			new BriarServiceConnection();
 
-	@Inject private ReferenceManager referenceManager = null;
-	@Inject private DatabaseConfig databaseConfig = null;
-	@Inject @DatabaseUiExecutor private Executor dbUiExecutor = null;
-	@Inject @CryptoExecutor private Executor cryptoExecutor = null;
+	@Inject private ReferenceManager referenceManager;
+	@Inject private DatabaseConfig databaseConfig;
+	@Inject @DatabaseUiExecutor private Executor dbUiExecutor;
+	@Inject @CryptoExecutor private Executor cryptoExecutor;
 	private boolean bound = false;
 	private TextView enterPassword = null;
 	private Button continueButton = null;
 	private ProgressBar progress = null;
 
 	// Fields that are accessed from background threads must be volatile
-	@Inject private volatile DatabaseComponent db = null;
-	@Inject private volatile CryptoComponent crypto = null;
+	@Inject private volatile CryptoComponent crypto;
+	@Inject private volatile DatabaseComponent db;
+	@Inject private volatile LifecycleManager lifecycleManager;
 
 	@Override
 	public void onCreate(Bundle state) {
@@ -136,7 +138,7 @@ public class HomeScreenActivity extends RoboActivity {
 			@Override
 			public void run() {
 				try {
-					// Wait for the service to be bound and started
+					// Wait for the service to finish starting up
 					IBinder binder = serviceConnection.waitForBinder();
 					BriarService service = ((BriarBinder) binder).getService();
 					service.waitForStartup();
@@ -146,7 +148,7 @@ public class HomeScreenActivity extends RoboActivity {
 					service.waitForShutdown();
 				} catch(InterruptedException e) {
 					if(LOG.isLoggable(INFO))
-						LOG.info("Interrupted while waiting for database");
+						LOG.info("Interrupted while waiting for service");
 				}
 				// Finish the activity and kill the JVM
 				runOnUiThread(new Runnable() {
@@ -164,7 +166,7 @@ public class HomeScreenActivity extends RoboActivity {
 		dbUiExecutor.execute(new Runnable() {
 			public void run() {
 				try {
-					serviceConnection.waitForDatabase();
+					lifecycleManager.waitForDatabase();
 					long now = System.currentTimeMillis();
 					db.addLocalAuthor(a);
 					db.setRating(a.getId(), GOOD);
diff --git a/briar-android/src/net/sf/briar/android/blogs/BlogActivity.java b/briar-android/src/net/sf/briar/android/blogs/BlogActivity.java
index aa421875ea..f603373968 100644
--- a/briar-android/src/net/sf/briar/android/blogs/BlogActivity.java
+++ b/briar-android/src/net/sf/briar/android/blogs/BlogActivity.java
@@ -17,8 +17,6 @@ import java.util.logging.Logger;
 
 import net.sf.briar.R;
 import net.sf.briar.android.AscendingHeaderComparator;
-import net.sf.briar.android.BriarService;
-import net.sf.briar.android.BriarService.BriarServiceConnection;
 import net.sf.briar.android.widgets.HorizontalBorder;
 import net.sf.briar.android.widgets.ListLoadingProgressBar;
 import net.sf.briar.api.Author;
@@ -33,6 +31,7 @@ import net.sf.briar.api.db.event.GroupMessageAddedEvent;
 import net.sf.briar.api.db.event.MessageExpiredEvent;
 import net.sf.briar.api.db.event.RatingChangedEvent;
 import net.sf.briar.api.db.event.SubscriptionRemovedEvent;
+import net.sf.briar.api.lifecycle.LifecycleManager;
 import net.sf.briar.api.messaging.GroupId;
 import roboguice.activity.RoboFragmentActivity;
 import android.content.Intent;
@@ -53,9 +52,6 @@ implements DatabaseListener, OnClickListener, OnItemClickListener {
 	private static final Logger LOG =
 			Logger.getLogger(BlogActivity.class.getName());
 
-	private final BriarServiceConnection serviceConnection =
-			new BriarServiceConnection();
-
 	private String groupName = null;
 	private boolean postable = false;
 	private BlogAdapter adapter = null;
@@ -65,6 +61,7 @@ implements DatabaseListener, OnClickListener, OnItemClickListener {
 	// Fields that are accessed from background threads must be volatile
 	@Inject private volatile DatabaseComponent db;
 	@Inject @DatabaseUiExecutor private volatile Executor dbUiExecutor;
+	@Inject private volatile LifecycleManager lifecycleManager;
 	private volatile GroupId groupId = null;
 
 	@Override
@@ -107,10 +104,6 @@ implements DatabaseListener, OnClickListener, OnItemClickListener {
 		layout.addView(composeButton);
 
 		setContentView(layout);
-
-		// Bind to the service so we can wait for it to start
-		bindService(new Intent(BriarService.class.getName()),
-				serviceConnection, 0);
 	}
 
 	@Override
@@ -124,7 +117,7 @@ implements DatabaseListener, OnClickListener, OnItemClickListener {
 		dbUiExecutor.execute(new Runnable() {
 			public void run() {
 				try {
-					serviceConnection.waitForDatabase();
+					lifecycleManager.waitForDatabase();
 					long now = System.currentTimeMillis();
 					Collection<GroupMessageHeader> headers =
 							db.getGroupMessageHeaders(groupId);
@@ -196,12 +189,6 @@ implements DatabaseListener, OnClickListener, OnItemClickListener {
 		db.removeListener(this);
 	}
 
-	@Override
-	public void onDestroy() {
-		super.onDestroy();
-		unbindService(serviceConnection);
-	}
-
 	public void eventOccurred(DatabaseEvent e) {
 		if(e instanceof GroupMessageAddedEvent) {
 			GroupMessageAddedEvent g = (GroupMessageAddedEvent) e;
diff --git a/briar-android/src/net/sf/briar/android/blogs/BlogListActivity.java b/briar-android/src/net/sf/briar/android/blogs/BlogListActivity.java
index 6bc9d9d580..5680ad9303 100644
--- a/briar-android/src/net/sf/briar/android/blogs/BlogListActivity.java
+++ b/briar-android/src/net/sf/briar/android/blogs/BlogListActivity.java
@@ -21,8 +21,6 @@ import java.util.concurrent.Executor;
 import java.util.logging.Logger;
 
 import net.sf.briar.R;
-import net.sf.briar.android.BriarService;
-import net.sf.briar.android.BriarService.BriarServiceConnection;
 import net.sf.briar.android.widgets.HorizontalBorder;
 import net.sf.briar.android.widgets.HorizontalSpace;
 import net.sf.briar.android.widgets.ListLoadingProgressBar;
@@ -38,6 +36,7 @@ import net.sf.briar.api.db.event.MessageExpiredEvent;
 import net.sf.briar.api.db.event.RemoteSubscriptionsUpdatedEvent;
 import net.sf.briar.api.db.event.SubscriptionAddedEvent;
 import net.sf.briar.api.db.event.SubscriptionRemovedEvent;
+import net.sf.briar.api.lifecycle.LifecycleManager;
 import net.sf.briar.api.messaging.Group;
 import net.sf.briar.api.messaging.GroupId;
 import net.sf.briar.api.messaging.GroupStatus;
@@ -61,9 +60,6 @@ OnItemClickListener {
 	private static final Logger LOG =
 			Logger.getLogger(BlogListActivity.class.getName());
 
-	private final BriarServiceConnection serviceConnection =
-			new BriarServiceConnection();
-
 	private BlogListAdapter adapter = null;
 	private ListView list = null;
 	private ListLoadingProgressBar loading = null;
@@ -73,6 +69,7 @@ OnItemClickListener {
 	// Fields that are accessed from background threads must be volatile
 	@Inject private volatile DatabaseComponent db;
 	@Inject @DatabaseUiExecutor private volatile Executor dbUiExecutor;
+	@Inject private volatile LifecycleManager lifecycleManager;
 
 	@Override
 	public void onCreate(Bundle state) {
@@ -126,10 +123,6 @@ OnItemClickListener {
 		layout.addView(footer);
 
 		setContentView(layout);
-
-		// Bind to the service so we can wait for it to start
-		bindService(new Intent(BriarService.class.getName()),
-				serviceConnection, 0);
 	}
 
 	@Override
@@ -144,7 +137,7 @@ OnItemClickListener {
 		dbUiExecutor.execute(new Runnable() {
 			public void run() {
 				try {
-					serviceConnection.waitForDatabase();
+					lifecycleManager.waitForDatabase();
 					long now = System.currentTimeMillis();
 					Set<GroupId> local = new HashSet<GroupId>();
 					for(Group g : db.getLocalGroups()) local.add(g.getId());
@@ -252,12 +245,6 @@ OnItemClickListener {
 		db.removeListener(this);
 	}
 
-	@Override
-	public void onDestroy() {
-		super.onDestroy();
-		unbindService(serviceConnection);
-	}
-
 	public void eventOccurred(DatabaseEvent e) {
 		if(e instanceof GroupMessageAddedEvent) {
 			Group g = ((GroupMessageAddedEvent) e).getGroup();
@@ -292,7 +279,7 @@ OnItemClickListener {
 		dbUiExecutor.execute(new Runnable() {
 			public void run() {
 				try {
-					serviceConnection.waitForDatabase();
+					lifecycleManager.waitForDatabase();
 					long now = System.currentTimeMillis();
 					Collection<GroupMessageHeader> headers =
 							db.getGroupMessageHeaders(g.getId());
@@ -333,7 +320,7 @@ OnItemClickListener {
 		dbUiExecutor.execute(new Runnable() {
 			public void run() {
 				try {
-					serviceConnection.waitForDatabase();
+					lifecycleManager.waitForDatabase();
 					int available = 0;
 					long now = System.currentTimeMillis();
 					for(GroupStatus s : db.getAvailableGroups()) {
diff --git a/briar-android/src/net/sf/briar/android/blogs/ConfigureBlogActivity.java b/briar-android/src/net/sf/briar/android/blogs/ConfigureBlogActivity.java
index 2ebd272609..0d7ca47c2c 100644
--- a/briar-android/src/net/sf/briar/android/blogs/ConfigureBlogActivity.java
+++ b/briar-android/src/net/sf/briar/android/blogs/ConfigureBlogActivity.java
@@ -15,8 +15,6 @@ import java.util.concurrent.Executor;
 import java.util.logging.Logger;
 
 import net.sf.briar.R;
-import net.sf.briar.android.BriarService;
-import net.sf.briar.android.BriarService.BriarServiceConnection;
 import net.sf.briar.android.contact.SelectContactsDialog;
 import net.sf.briar.android.invitation.AddContactActivity;
 import net.sf.briar.android.messages.NoContactsDialog;
@@ -25,6 +23,7 @@ import net.sf.briar.api.ContactId;
 import net.sf.briar.api.android.DatabaseUiExecutor;
 import net.sf.briar.api.db.DatabaseComponent;
 import net.sf.briar.api.db.DbException;
+import net.sf.briar.api.lifecycle.LifecycleManager;
 import net.sf.briar.api.messaging.Group;
 import net.sf.briar.api.messaging.GroupId;
 import roboguice.activity.RoboFragmentActivity;
@@ -48,9 +47,6 @@ SelectContactsDialog.Listener {
 	private static final Logger LOG =
 			Logger.getLogger(ConfigureBlogActivity.class.getName());
 
-	private final BriarServiceConnection serviceConnection =
-			new BriarServiceConnection();
-
 	private boolean subscribed = false;
 	private CheckBox subscribeCheckBox = null;
 	private RadioGroup radioGroup = null;
@@ -61,6 +57,7 @@ SelectContactsDialog.Listener {
 	// Fields that are accessed from background threads must be volatile
 	@Inject private volatile DatabaseComponent db;
 	@Inject @DatabaseUiExecutor private volatile Executor dbUiExecutor;
+	@Inject private volatile LifecycleManager lifecycleManager;
 	private volatile Group group = null;
 	private volatile Collection<ContactId> selected = Collections.emptyList();
 
@@ -127,16 +124,6 @@ SelectContactsDialog.Listener {
 		layout.addView(progress);
 
 		setContentView(layout);
-
-		// Bind to the service so we can wait for it to start
-		bindService(new Intent(BriarService.class.getName()),
-				serviceConnection, 0);
-	}
-
-	@Override
-	public void onDestroy() {
-		super.onDestroy();
-		unbindService(serviceConnection);
 	}
 
 	public void onClick(View view) {
@@ -164,7 +151,7 @@ SelectContactsDialog.Listener {
 		dbUiExecutor.execute(new Runnable() {
 			public void run() {
 				try {
-					serviceConnection.waitForDatabase();
+					lifecycleManager.waitForDatabase();
 					long now = System.currentTimeMillis();
 					Collection<Contact> contacts = db.getContacts();
 					long duration = System.currentTimeMillis() - now;
@@ -208,7 +195,7 @@ SelectContactsDialog.Listener {
 		dbUiExecutor.execute(new Runnable() {
 			public void run() {
 				try {
-					serviceConnection.waitForDatabase();
+					lifecycleManager.waitForDatabase();
 					long now = System.currentTimeMillis();
 					if(subscribe) {
 						if(!wasSubscribed) db.subscribe(group);
diff --git a/briar-android/src/net/sf/briar/android/blogs/CreateBlogActivity.java b/briar-android/src/net/sf/briar/android/blogs/CreateBlogActivity.java
index 7232e9d773..a92b19ea54 100644
--- a/briar-android/src/net/sf/briar/android/blogs/CreateBlogActivity.java
+++ b/briar-android/src/net/sf/briar/android/blogs/CreateBlogActivity.java
@@ -21,8 +21,6 @@ import java.util.concurrent.Executor;
 import java.util.logging.Logger;
 
 import net.sf.briar.R;
-import net.sf.briar.android.BriarService;
-import net.sf.briar.android.BriarService.BriarServiceConnection;
 import net.sf.briar.android.contact.SelectContactsDialog;
 import net.sf.briar.android.invitation.AddContactActivity;
 import net.sf.briar.android.messages.NoContactsDialog;
@@ -33,6 +31,7 @@ import net.sf.briar.api.crypto.CryptoComponent;
 import net.sf.briar.api.crypto.CryptoExecutor;
 import net.sf.briar.api.db.DatabaseComponent;
 import net.sf.briar.api.db.DbException;
+import net.sf.briar.api.lifecycle.LifecycleManager;
 import net.sf.briar.api.messaging.GroupFactory;
 import net.sf.briar.api.messaging.LocalGroup;
 import roboguice.activity.RoboFragmentActivity;
@@ -60,9 +59,6 @@ SelectContactsDialog.Listener {
 	private static final Logger LOG =
 			Logger.getLogger(CreateBlogActivity.class.getName());
 
-	private final BriarServiceConnection serviceConnection =
-			new BriarServiceConnection();
-
 	@Inject @CryptoExecutor private Executor cryptoExecutor;
 	private EditText nameEntry = null;
 	private RadioGroup radioGroup = null;
@@ -75,6 +71,7 @@ SelectContactsDialog.Listener {
 	@Inject private volatile GroupFactory groupFactory;
 	@Inject private volatile DatabaseComponent db;
 	@Inject @DatabaseUiExecutor private volatile Executor dbUiExecutor;
+	@Inject private volatile LifecycleManager lifecycleManager;
 	private volatile Collection<ContactId> selected = Collections.emptyList();
 
 	@Override
@@ -135,10 +132,6 @@ SelectContactsDialog.Listener {
 		layout.addView(progress);
 
 		setContentView(layout);
-
-		// Bind to the service so we can wait for it to start
-		bindService(new Intent(BriarService.class.getName()),
-				serviceConnection, 0);
 	}
 
 	private void enableOrDisableCreateButton() {
@@ -149,12 +142,6 @@ SelectContactsDialog.Listener {
 		createButton.setEnabled(nameNotEmpty && visibilitySelected);
 	}
 
-	@Override
-	public void onDestroy() {
-		super.onDestroy();
-		unbindService(serviceConnection);
-	}
-
 	public boolean onEditorAction(TextView textView, int actionId, KeyEvent e) {
 		validateName();
 		return true;
@@ -197,7 +184,7 @@ SelectContactsDialog.Listener {
 		dbUiExecutor.execute(new Runnable() {
 			public void run() {
 				try {
-					serviceConnection.waitForDatabase();
+					lifecycleManager.waitForDatabase();
 					long now = System.currentTimeMillis();
 					Collection<Contact> contacts = db.getContacts();
 					long duration = System.currentTimeMillis() - now;
@@ -240,7 +227,7 @@ SelectContactsDialog.Listener {
 		dbUiExecutor.execute(new Runnable() {
 			public void run() {
 				try {
-					serviceConnection.waitForDatabase();
+					lifecycleManager.waitForDatabase();
 					long now = System.currentTimeMillis();
 					db.addLocalGroup(g);
 					db.subscribe(g);
diff --git a/briar-android/src/net/sf/briar/android/blogs/ManageBlogsActivity.java b/briar-android/src/net/sf/briar/android/blogs/ManageBlogsActivity.java
index 91385ccd93..1055024983 100644
--- a/briar-android/src/net/sf/briar/android/blogs/ManageBlogsActivity.java
+++ b/briar-android/src/net/sf/briar/android/blogs/ManageBlogsActivity.java
@@ -13,8 +13,6 @@ import java.util.List;
 import java.util.concurrent.Executor;
 import java.util.logging.Logger;
 
-import net.sf.briar.android.BriarService;
-import net.sf.briar.android.BriarService.BriarServiceConnection;
 import net.sf.briar.android.widgets.ListLoadingProgressBar;
 import net.sf.briar.api.android.DatabaseUiExecutor;
 import net.sf.briar.api.db.DatabaseComponent;
@@ -24,6 +22,7 @@ import net.sf.briar.api.db.event.DatabaseListener;
 import net.sf.briar.api.db.event.RemoteSubscriptionsUpdatedEvent;
 import net.sf.briar.api.db.event.SubscriptionAddedEvent;
 import net.sf.briar.api.db.event.SubscriptionRemovedEvent;
+import net.sf.briar.api.lifecycle.LifecycleManager;
 import net.sf.briar.api.messaging.Group;
 import net.sf.briar.api.messaging.GroupStatus;
 import roboguice.activity.RoboFragmentActivity;
@@ -42,9 +41,6 @@ implements DatabaseListener, OnItemClickListener {
 	private static final Logger LOG =
 			Logger.getLogger(ManageBlogsActivity.class.getName());
 
-	private final BriarServiceConnection serviceConnection =
-			new BriarServiceConnection();
-
 	private ManageBlogsAdapter adapter = null;
 	private ListView list = null;
 	private ListLoadingProgressBar loading = null;
@@ -52,6 +48,7 @@ implements DatabaseListener, OnItemClickListener {
 	// Fields that are accessed from background threads must be volatile
 	@Inject private volatile DatabaseComponent db;
 	@Inject @DatabaseUiExecutor private volatile Executor dbUiExecutor;
+	@Inject private volatile LifecycleManager lifecycleManager;
 
 	@Override
 	public void onCreate(Bundle state) {
@@ -66,10 +63,6 @@ implements DatabaseListener, OnItemClickListener {
 		// Show a progress bar while the list is loading
 		loading = new ListLoadingProgressBar(this);
 		setContentView(loading);
-
-		// Bind to the service so we can wait for it to start
-		bindService(new Intent(BriarService.class.getName()),
-				serviceConnection, 0);
 	}
 
 	@Override
@@ -83,7 +76,7 @@ implements DatabaseListener, OnItemClickListener {
 		dbUiExecutor.execute(new Runnable() {
 			public void run() {
 				try {
-					serviceConnection.waitForDatabase();
+					lifecycleManager.waitForDatabase();
 					long now = System.currentTimeMillis();
 					List<GroupStatus> available = new ArrayList<GroupStatus>();
 					for(GroupStatus s : db.getAvailableGroups())
@@ -125,12 +118,6 @@ implements DatabaseListener, OnItemClickListener {
 		db.removeListener(this);
 	}
 
-	@Override
-	public void onDestroy() {
-		super.onDestroy();
-		unbindService(serviceConnection);
-	}
-
 	public void eventOccurred(DatabaseEvent e) {
 		if(e instanceof RemoteSubscriptionsUpdatedEvent) {
 			if(LOG.isLoggable(INFO))
diff --git a/briar-android/src/net/sf/briar/android/blogs/ReadBlogPostActivity.java b/briar-android/src/net/sf/briar/android/blogs/ReadBlogPostActivity.java
index 4ad6cc09df..7188674f24 100644
--- a/briar-android/src/net/sf/briar/android/blogs/ReadBlogPostActivity.java
+++ b/briar-android/src/net/sf/briar/android/blogs/ReadBlogPostActivity.java
@@ -19,14 +19,13 @@ import java.util.concurrent.Executor;
 import java.util.logging.Logger;
 
 import net.sf.briar.R;
-import net.sf.briar.android.BriarService;
-import net.sf.briar.android.BriarService.BriarServiceConnection;
 import net.sf.briar.android.widgets.HorizontalBorder;
 import net.sf.briar.android.widgets.HorizontalSpace;
 import net.sf.briar.api.android.DatabaseUiExecutor;
 import net.sf.briar.api.db.DatabaseComponent;
 import net.sf.briar.api.db.DbException;
 import net.sf.briar.api.db.NoSuchMessageException;
+import net.sf.briar.api.lifecycle.LifecycleManager;
 import net.sf.briar.api.messaging.GroupId;
 import net.sf.briar.api.messaging.MessageId;
 import net.sf.briar.api.messaging.Rating;
@@ -55,9 +54,6 @@ implements OnClickListener {
 	private static final Logger LOG =
 			Logger.getLogger(ReadBlogPostActivity.class.getName());
 
-	private final BriarServiceConnection serviceConnection =
-			new BriarServiceConnection();
-
 	private GroupId groupId = null;
 	private boolean postable = false;
 	private Rating rating = UNRATED;
@@ -70,6 +66,7 @@ implements OnClickListener {
 	// Fields that are accessed from background threads must be volatile
 	@Inject private volatile DatabaseComponent db;
 	@Inject @DatabaseUiExecutor private volatile Executor dbUiExecutor;
+	@Inject private volatile LifecycleManager lifecycleManager;
 	private volatile MessageId messageId = null;
 
 	@Override
@@ -196,17 +193,13 @@ implements OnClickListener {
 		layout.addView(footer);
 
 		setContentView(layout);
-
-		// Bind to the service so we can wait for it to start
-		bindService(new Intent(BriarService.class.getName()),
-				serviceConnection, 0);
 	}
 
 	private void setReadInDatabase(final boolean read) {
 		dbUiExecutor.execute(new Runnable() {
 			public void run() {
 				try {
-					serviceConnection.waitForDatabase();
+					lifecycleManager.waitForDatabase();
 					long now = System.currentTimeMillis();
 					db.setReadFlag(messageId, read);
 					long duration = System.currentTimeMillis() - now;
@@ -239,7 +232,7 @@ implements OnClickListener {
 		dbUiExecutor.execute(new Runnable() {
 			public void run() {
 				try {
-					serviceConnection.waitForDatabase();
+					lifecycleManager.waitForDatabase();
 					long now = System.currentTimeMillis();
 					byte[] body = db.getMessageBody(messageId);
 					long duration = System.currentTimeMillis() - now;
@@ -278,12 +271,6 @@ implements OnClickListener {
 		state.putBoolean("net.sf.briar.READ", read);
 	}
 
-	@Override
-	public void onDestroy() {
-		super.onDestroy();
-		unbindService(serviceConnection);
-	}
-
 	public void onClick(View view) {
 		if(view == readButton) {
 			setReadInDatabase(!read);
diff --git a/briar-android/src/net/sf/briar/android/blogs/WriteBlogPostActivity.java b/briar-android/src/net/sf/briar/android/blogs/WriteBlogPostActivity.java
index 2a134bbaa4..e3d60e2a96 100644
--- a/briar-android/src/net/sf/briar/android/blogs/WriteBlogPostActivity.java
+++ b/briar-android/src/net/sf/briar/android/blogs/WriteBlogPostActivity.java
@@ -17,8 +17,6 @@ import java.util.concurrent.Executor;
 import java.util.logging.Logger;
 
 import net.sf.briar.R;
-import net.sf.briar.android.BriarService;
-import net.sf.briar.android.BriarService.BriarServiceConnection;
 import net.sf.briar.android.identity.CreateIdentityActivity;
 import net.sf.briar.android.identity.LocalAuthorItem;
 import net.sf.briar.android.identity.LocalAuthorItemComparator;
@@ -31,6 +29,7 @@ import net.sf.briar.api.crypto.CryptoComponent;
 import net.sf.briar.api.crypto.KeyParser;
 import net.sf.briar.api.db.DatabaseComponent;
 import net.sf.briar.api.db.DbException;
+import net.sf.briar.api.lifecycle.LifecycleManager;
 import net.sf.briar.api.messaging.GroupId;
 import net.sf.briar.api.messaging.LocalGroup;
 import net.sf.briar.api.messaging.Message;
@@ -58,9 +57,6 @@ implements OnItemSelectedListener, OnClickListener {
 	private static final Logger LOG =
 			Logger.getLogger(WriteBlogPostActivity.class.getName());
 
-	private final BriarServiceConnection serviceConnection =
-			new BriarServiceConnection();
-
 	@Inject private CryptoComponent crypto;
 	@Inject private MessageFactory messageFactory;
 	private LocalAuthorSpinnerAdapter fromAdapter = null;
@@ -74,6 +70,7 @@ implements OnItemSelectedListener, OnClickListener {
 	// Fields that are accessed from background threads must be volatile
 	@Inject private volatile DatabaseComponent db;
 	@Inject @DatabaseUiExecutor private volatile Executor dbUiExecutor;
+	@Inject private volatile LifecycleManager lifecycleManager;
 	private volatile LocalAuthor localAuthor = null;
 	private volatile LocalGroup localGroup = null;
 	private volatile MessageId parentId = null;
@@ -152,10 +149,6 @@ implements OnItemSelectedListener, OnClickListener {
 		layout.addView(content);
 
 		setContentView(layout);
-
-		// Bind to the service so we can wait for it to start
-		bindService(new Intent(BriarService.class.getName()),
-				serviceConnection, 0);
 	}
 
 	@Override
@@ -169,7 +162,7 @@ implements OnItemSelectedListener, OnClickListener {
 		dbUiExecutor.execute(new Runnable() {
 			public void run() {
 				try {
-					serviceConnection.waitForDatabase();
+					lifecycleManager.waitForDatabase();
 					long now = System.currentTimeMillis();
 					Collection<LocalAuthor> localAuthors = db.getLocalAuthors();
 					long duration = System.currentTimeMillis() - now;
@@ -216,7 +209,7 @@ implements OnItemSelectedListener, OnClickListener {
 		dbUiExecutor.execute(new Runnable() {
 			public void run() {
 				try {
-					serviceConnection.waitForDatabase();
+					lifecycleManager.waitForDatabase();
 					long now = System.currentTimeMillis();
 					Collection<LocalGroup> groups = db.getLocalGroups();
 					long duration = System.currentTimeMillis() - now;
@@ -269,12 +262,6 @@ implements OnItemSelectedListener, OnClickListener {
 		}
 	}
 
-	@Override
-	public void onDestroy() {
-		super.onDestroy();
-		unbindService(serviceConnection);
-	}
-
 	public void onItemSelected(AdapterView<?> parent, View view, int position,
 			long id) {
 		if(parent == fromSpinner) {
@@ -350,7 +337,7 @@ implements OnItemSelectedListener, OnClickListener {
 		dbUiExecutor.execute(new Runnable() {
 			public void run() {
 				try {
-					serviceConnection.waitForDatabase();
+					lifecycleManager.waitForDatabase();
 					long now = System.currentTimeMillis();
 					db.addLocalGroupMessage(m);
 					long duration = System.currentTimeMillis() - now;
diff --git a/briar-android/src/net/sf/briar/android/contact/ContactListActivity.java b/briar-android/src/net/sf/briar/android/contact/ContactListActivity.java
index 32f92293e9..061d52a10b 100644
--- a/briar-android/src/net/sf/briar/android/contact/ContactListActivity.java
+++ b/briar-android/src/net/sf/briar/android/contact/ContactListActivity.java
@@ -22,8 +22,6 @@ import java.util.concurrent.Executor;
 import java.util.logging.Logger;
 
 import net.sf.briar.R;
-import net.sf.briar.android.BriarService;
-import net.sf.briar.android.BriarService.BriarServiceConnection;
 import net.sf.briar.android.invitation.AddContactActivity;
 import net.sf.briar.android.widgets.HorizontalBorder;
 import net.sf.briar.android.widgets.HorizontalSpace;
@@ -37,6 +35,7 @@ import net.sf.briar.api.db.event.ContactAddedEvent;
 import net.sf.briar.api.db.event.ContactRemovedEvent;
 import net.sf.briar.api.db.event.DatabaseEvent;
 import net.sf.briar.api.db.event.DatabaseListener;
+import net.sf.briar.api.lifecycle.LifecycleManager;
 import net.sf.briar.api.transport.ConnectionListener;
 import net.sf.briar.api.transport.ConnectionRegistry;
 import roboguice.activity.RoboActivity;
@@ -60,9 +59,6 @@ ConnectionListener {
 	private static final Logger LOG =
 			Logger.getLogger(ContactListActivity.class.getName());
 
-	private final BriarServiceConnection serviceConnection =
-			new BriarServiceConnection();
-
 	@Inject private ConnectionRegistry connectionRegistry;
 	private ContactListAdapter adapter = null;
 	private ListView list = null;
@@ -72,6 +68,7 @@ ConnectionListener {
 	// Fields that are accessed from background threads must be volatile
 	@Inject private volatile DatabaseComponent db;
 	@Inject @DatabaseUiExecutor private volatile Executor dbUiExecutor;
+	@Inject private volatile LifecycleManager lifecycleManager;
 
 	@Override
 	public void onCreate(Bundle state) {
@@ -118,10 +115,6 @@ ConnectionListener {
 		layout.addView(footer);
 
 		setContentView(layout);
-
-		// Bind to the service so we can wait for it to start
-		bindService(new Intent(BriarService.class.getName()),
-				serviceConnection, 0);
 	}
 
 	@Override
@@ -136,7 +129,7 @@ ConnectionListener {
 		dbUiExecutor.execute(new Runnable() {
 			public void run() {
 				try {
-					serviceConnection.waitForDatabase();
+					lifecycleManager.waitForDatabase();
 					long now = System.currentTimeMillis();
 					Collection<Contact> contacts = db.getContacts();
 					Map<ContactId, Long> times = db.getLastConnected();
@@ -182,12 +175,6 @@ ConnectionListener {
 		connectionRegistry.removeListener(this);
 	}
 
-	@Override
-	public void onDestroy() {
-		super.onDestroy();
-		unbindService(serviceConnection);
-	}
-
 	public void onClick(View view) {
 		if(view == addContactButton) {
 			startActivity(new Intent(this, AddContactActivity.class));
diff --git a/briar-android/src/net/sf/briar/android/groups/ConfigureGroupActivity.java b/briar-android/src/net/sf/briar/android/groups/ConfigureGroupActivity.java
index df203717cd..cedcdc3ffd 100644
--- a/briar-android/src/net/sf/briar/android/groups/ConfigureGroupActivity.java
+++ b/briar-android/src/net/sf/briar/android/groups/ConfigureGroupActivity.java
@@ -15,8 +15,6 @@ import java.util.concurrent.Executor;
 import java.util.logging.Logger;
 
 import net.sf.briar.R;
-import net.sf.briar.android.BriarService;
-import net.sf.briar.android.BriarService.BriarServiceConnection;
 import net.sf.briar.android.contact.SelectContactsDialog;
 import net.sf.briar.android.invitation.AddContactActivity;
 import net.sf.briar.android.messages.NoContactsDialog;
@@ -25,6 +23,7 @@ import net.sf.briar.api.ContactId;
 import net.sf.briar.api.android.DatabaseUiExecutor;
 import net.sf.briar.api.db.DatabaseComponent;
 import net.sf.briar.api.db.DbException;
+import net.sf.briar.api.lifecycle.LifecycleManager;
 import net.sf.briar.api.messaging.Group;
 import net.sf.briar.api.messaging.GroupId;
 import roboguice.activity.RoboFragmentActivity;
@@ -48,9 +47,6 @@ SelectContactsDialog.Listener {
 	private static final Logger LOG =
 			Logger.getLogger(ConfigureGroupActivity.class.getName());
 
-	private final BriarServiceConnection serviceConnection =
-			new BriarServiceConnection();
-
 	private boolean subscribed = false;
 	private CheckBox subscribeCheckBox = null;
 	private RadioGroup radioGroup = null;
@@ -61,6 +57,7 @@ SelectContactsDialog.Listener {
 	// Fields that are accessed from background threads must be volatile
 	@Inject private volatile DatabaseComponent db;
 	@Inject @DatabaseUiExecutor private volatile Executor dbUiExecutor;
+	@Inject private volatile LifecycleManager lifecycleManager;
 	private volatile Group group = null;
 	private volatile Collection<ContactId> selected = Collections.emptyList();
 
@@ -125,16 +122,6 @@ SelectContactsDialog.Listener {
 		layout.addView(progress);
 
 		setContentView(layout);
-
-		// Bind to the service so we can wait for it to start
-		bindService(new Intent(BriarService.class.getName()),
-				serviceConnection, 0);
-	}
-
-	@Override
-	public void onDestroy() {
-		super.onDestroy();
-		unbindService(serviceConnection);
 	}
 
 	public void onClick(View view) {
@@ -162,7 +149,7 @@ SelectContactsDialog.Listener {
 		dbUiExecutor.execute(new Runnable() {
 			public void run() {
 				try {
-					serviceConnection.waitForDatabase();
+					lifecycleManager.waitForDatabase();
 					long now = System.currentTimeMillis();
 					Collection<Contact> contacts = db.getContacts();
 					long duration = System.currentTimeMillis() - now;
@@ -206,7 +193,7 @@ SelectContactsDialog.Listener {
 		dbUiExecutor.execute(new Runnable() {
 			public void run() {
 				try {
-					serviceConnection.waitForDatabase();
+					lifecycleManager.waitForDatabase();
 					long now = System.currentTimeMillis();
 					if(subscribe) {
 						if(!wasSubscribed) db.subscribe(group);
diff --git a/briar-android/src/net/sf/briar/android/groups/CreateGroupActivity.java b/briar-android/src/net/sf/briar/android/groups/CreateGroupActivity.java
index e75f6fbf70..56b5187e02 100644
--- a/briar-android/src/net/sf/briar/android/groups/CreateGroupActivity.java
+++ b/briar-android/src/net/sf/briar/android/groups/CreateGroupActivity.java
@@ -20,8 +20,6 @@ import java.util.concurrent.Executor;
 import java.util.logging.Logger;
 
 import net.sf.briar.R;
-import net.sf.briar.android.BriarService;
-import net.sf.briar.android.BriarService.BriarServiceConnection;
 import net.sf.briar.android.contact.SelectContactsDialog;
 import net.sf.briar.android.invitation.AddContactActivity;
 import net.sf.briar.android.messages.NoContactsDialog;
@@ -30,6 +28,7 @@ import net.sf.briar.api.ContactId;
 import net.sf.briar.api.android.DatabaseUiExecutor;
 import net.sf.briar.api.db.DatabaseComponent;
 import net.sf.briar.api.db.DbException;
+import net.sf.briar.api.lifecycle.LifecycleManager;
 import net.sf.briar.api.messaging.Group;
 import net.sf.briar.api.messaging.GroupFactory;
 import roboguice.activity.RoboFragmentActivity;
@@ -57,9 +56,6 @@ SelectContactsDialog.Listener {
 	private static final Logger LOG =
 			Logger.getLogger(CreateGroupActivity.class.getName());
 
-	private final BriarServiceConnection serviceConnection =
-			new BriarServiceConnection();
-
 	private EditText nameEntry = null;
 	private RadioGroup radioGroup = null;
 	private RadioButton visibleToAll = null, visibleToSome = null;
@@ -70,6 +66,7 @@ SelectContactsDialog.Listener {
 	@Inject private volatile GroupFactory groupFactory;
 	@Inject private volatile DatabaseComponent db;
 	@Inject @DatabaseUiExecutor private volatile Executor dbUiExecutor;
+	@Inject private volatile LifecycleManager lifecycleManager;
 	private volatile Collection<ContactId> selected = Collections.emptyList();
 
 	@Override
@@ -129,10 +126,6 @@ SelectContactsDialog.Listener {
 		layout.addView(progress);
 
 		setContentView(layout);
-
-		// Bind to the service so we can wait for it to start
-		bindService(new Intent(BriarService.class.getName()),
-				serviceConnection, 0);
 	}
 
 	private void enableOrDisableCreateButton() {
@@ -143,12 +136,6 @@ SelectContactsDialog.Listener {
 		createButton.setEnabled(nameNotEmpty && visibilitySelected);
 	}
 
-	@Override
-	public void onDestroy() {
-		super.onDestroy();
-		unbindService(serviceConnection);
-	}
-
 	public boolean onEditorAction(TextView textView, int actionId, KeyEvent e) {
 		validateName();
 		return true;
@@ -172,7 +159,7 @@ SelectContactsDialog.Listener {
 			dbUiExecutor.execute(new Runnable() {
 				public void run() {
 					try {
-						serviceConnection.waitForDatabase();
+						lifecycleManager.waitForDatabase();
 						Group g = groupFactory.createGroup(name);
 						long now = System.currentTimeMillis();
 						db.subscribe(g);
@@ -206,7 +193,7 @@ SelectContactsDialog.Listener {
 		dbUiExecutor.execute(new Runnable() {
 			public void run() {
 				try {
-					serviceConnection.waitForDatabase();
+					lifecycleManager.waitForDatabase();
 					long now = System.currentTimeMillis();
 					Collection<Contact> contacts = db.getContacts();
 					long duration = System.currentTimeMillis() - now;
diff --git a/briar-android/src/net/sf/briar/android/groups/GroupActivity.java b/briar-android/src/net/sf/briar/android/groups/GroupActivity.java
index 0ea0adb590..c7de96f65c 100644
--- a/briar-android/src/net/sf/briar/android/groups/GroupActivity.java
+++ b/briar-android/src/net/sf/briar/android/groups/GroupActivity.java
@@ -17,8 +17,6 @@ import java.util.logging.Logger;
 
 import net.sf.briar.R;
 import net.sf.briar.android.AscendingHeaderComparator;
-import net.sf.briar.android.BriarService;
-import net.sf.briar.android.BriarService.BriarServiceConnection;
 import net.sf.briar.android.widgets.HorizontalBorder;
 import net.sf.briar.android.widgets.ListLoadingProgressBar;
 import net.sf.briar.api.Author;
@@ -33,6 +31,7 @@ import net.sf.briar.api.db.event.GroupMessageAddedEvent;
 import net.sf.briar.api.db.event.MessageExpiredEvent;
 import net.sf.briar.api.db.event.RatingChangedEvent;
 import net.sf.briar.api.db.event.SubscriptionRemovedEvent;
+import net.sf.briar.api.lifecycle.LifecycleManager;
 import net.sf.briar.api.messaging.GroupId;
 import roboguice.activity.RoboActivity;
 import android.content.Intent;
@@ -53,9 +52,6 @@ OnClickListener, OnItemClickListener {
 	private static final Logger LOG =
 			Logger.getLogger(GroupActivity.class.getName());
 
-	private final BriarServiceConnection serviceConnection =
-			new BriarServiceConnection();
-
 	private String groupName = null;
 	private GroupAdapter adapter = null;
 	private ListView list = null;
@@ -64,6 +60,7 @@ OnClickListener, OnItemClickListener {
 	// Fields that are accessed from background threads must be volatile
 	@Inject private volatile DatabaseComponent db;
 	@Inject @DatabaseUiExecutor private volatile Executor dbUiExecutor;
+	@Inject private volatile LifecycleManager lifecycleManager;
 	private volatile GroupId groupId = null;
 
 	@Override
@@ -105,10 +102,6 @@ OnClickListener, OnItemClickListener {
 		layout.addView(composeButton);
 
 		setContentView(layout);
-
-		// Bind to the service so we can wait for it to start
-		bindService(new Intent(BriarService.class.getName()),
-				serviceConnection, 0);
 	}
 
 	@Override
@@ -122,7 +115,7 @@ OnClickListener, OnItemClickListener {
 		dbUiExecutor.execute(new Runnable() {
 			public void run() {
 				try {
-					serviceConnection.waitForDatabase();
+					lifecycleManager.waitForDatabase();
 					long now = System.currentTimeMillis();
 					Collection<GroupMessageHeader> headers =
 							db.getGroupMessageHeaders(groupId);
@@ -194,12 +187,6 @@ OnClickListener, OnItemClickListener {
 		db.removeListener(this);
 	}
 
-	@Override
-	public void onDestroy() {
-		super.onDestroy();
-		unbindService(serviceConnection);
-	}
-
 	public void eventOccurred(DatabaseEvent e) {
 		if(e instanceof GroupMessageAddedEvent) {
 			GroupMessageAddedEvent g = (GroupMessageAddedEvent) e;
diff --git a/briar-android/src/net/sf/briar/android/groups/GroupListActivity.java b/briar-android/src/net/sf/briar/android/groups/GroupListActivity.java
index 725ea96f66..bd4d274656 100644
--- a/briar-android/src/net/sf/briar/android/groups/GroupListActivity.java
+++ b/briar-android/src/net/sf/briar/android/groups/GroupListActivity.java
@@ -19,8 +19,6 @@ import java.util.concurrent.Executor;
 import java.util.logging.Logger;
 
 import net.sf.briar.R;
-import net.sf.briar.android.BriarService;
-import net.sf.briar.android.BriarService.BriarServiceConnection;
 import net.sf.briar.android.widgets.HorizontalBorder;
 import net.sf.briar.android.widgets.HorizontalSpace;
 import net.sf.briar.android.widgets.ListLoadingProgressBar;
@@ -36,6 +34,7 @@ import net.sf.briar.api.db.event.MessageExpiredEvent;
 import net.sf.briar.api.db.event.RemoteSubscriptionsUpdatedEvent;
 import net.sf.briar.api.db.event.SubscriptionAddedEvent;
 import net.sf.briar.api.db.event.SubscriptionRemovedEvent;
+import net.sf.briar.api.lifecycle.LifecycleManager;
 import net.sf.briar.api.messaging.Group;
 import net.sf.briar.api.messaging.GroupId;
 import net.sf.briar.api.messaging.GroupStatus;
@@ -59,9 +58,6 @@ OnItemClickListener {
 	private static final Logger LOG =
 			Logger.getLogger(GroupListActivity.class.getName());
 
-	private final BriarServiceConnection serviceConnection =
-			new BriarServiceConnection();
-
 	private GroupListAdapter adapter = null;
 	private ListView list = null;
 	private ListLoadingProgressBar loading = null;
@@ -71,6 +67,7 @@ OnItemClickListener {
 	// Fields that are accessed from background threads must be volatile
 	@Inject private volatile DatabaseComponent db;
 	@Inject @DatabaseUiExecutor private volatile Executor dbUiExecutor;
+	@Inject private volatile LifecycleManager lifecycleManager;
 
 	@Override
 	public void onCreate(Bundle state) {
@@ -124,10 +121,6 @@ OnItemClickListener {
 		layout.addView(footer);
 
 		setContentView(layout);
-
-		// Bind to the service so we can wait for it to start
-		bindService(new Intent(BriarService.class.getName()),
-				serviceConnection, 0);
 	}
 
 	@Override
@@ -142,7 +135,7 @@ OnItemClickListener {
 		dbUiExecutor.execute(new Runnable() {
 			public void run() {
 				try {
-					serviceConnection.waitForDatabase();
+					lifecycleManager.waitForDatabase();
 					int available = 0;
 					long now = System.currentTimeMillis();
 					for(GroupStatus s : db.getAvailableGroups()) {
@@ -247,12 +240,6 @@ OnItemClickListener {
 		db.removeListener(this);
 	}
 
-	@Override
-	public void onDestroy() {
-		super.onDestroy();
-		unbindService(serviceConnection);
-	}
-
 	public void eventOccurred(DatabaseEvent e) {
 		if(e instanceof GroupMessageAddedEvent) {
 			Group g = ((GroupMessageAddedEvent) e).getGroup();
@@ -287,7 +274,7 @@ OnItemClickListener {
 		dbUiExecutor.execute(new Runnable() {
 			public void run() {
 				try {
-					serviceConnection.waitForDatabase();
+					lifecycleManager.waitForDatabase();
 					long now = System.currentTimeMillis();
 					Collection<GroupMessageHeader> headers =
 							db.getGroupMessageHeaders(g.getId());
@@ -327,7 +314,7 @@ OnItemClickListener {
 		dbUiExecutor.execute(new Runnable() {
 			public void run() {
 				try {
-					serviceConnection.waitForDatabase();
+					lifecycleManager.waitForDatabase();
 					int available = 0;
 					long now = System.currentTimeMillis();
 					for(GroupStatus s : db.getAvailableGroups()) {
diff --git a/briar-android/src/net/sf/briar/android/groups/ManageGroupsActivity.java b/briar-android/src/net/sf/briar/android/groups/ManageGroupsActivity.java
index aae133ce17..390de0e280 100644
--- a/briar-android/src/net/sf/briar/android/groups/ManageGroupsActivity.java
+++ b/briar-android/src/net/sf/briar/android/groups/ManageGroupsActivity.java
@@ -13,8 +13,6 @@ import java.util.List;
 import java.util.concurrent.Executor;
 import java.util.logging.Logger;
 
-import net.sf.briar.android.BriarService;
-import net.sf.briar.android.BriarService.BriarServiceConnection;
 import net.sf.briar.android.widgets.ListLoadingProgressBar;
 import net.sf.briar.api.android.DatabaseUiExecutor;
 import net.sf.briar.api.db.DatabaseComponent;
@@ -24,6 +22,7 @@ import net.sf.briar.api.db.event.DatabaseListener;
 import net.sf.briar.api.db.event.RemoteSubscriptionsUpdatedEvent;
 import net.sf.briar.api.db.event.SubscriptionAddedEvent;
 import net.sf.briar.api.db.event.SubscriptionRemovedEvent;
+import net.sf.briar.api.lifecycle.LifecycleManager;
 import net.sf.briar.api.messaging.Group;
 import net.sf.briar.api.messaging.GroupStatus;
 import roboguice.activity.RoboFragmentActivity;
@@ -42,9 +41,6 @@ implements DatabaseListener, OnItemClickListener {
 	private static final Logger LOG =
 			Logger.getLogger(ManageGroupsActivity.class.getName());
 
-	private final BriarServiceConnection serviceConnection =
-			new BriarServiceConnection();
-
 	private ManageGroupsAdapter adapter = null;
 	private ListView list = null;
 	private ListLoadingProgressBar loading = null;
@@ -52,6 +48,7 @@ implements DatabaseListener, OnItemClickListener {
 	// Fields that are accessed from background threads must be volatile
 	@Inject private volatile DatabaseComponent db;
 	@Inject @DatabaseUiExecutor private volatile Executor dbUiExecutor;
+	@Inject private volatile LifecycleManager lifecycleManager;
 
 	@Override
 	public void onCreate(Bundle state) {
@@ -66,10 +63,6 @@ implements DatabaseListener, OnItemClickListener {
 		// Show a progress bar while the list is loading
 		loading = new ListLoadingProgressBar(this);
 		setContentView(loading);
-
-		// Bind to the service so we can wait for it to start
-		bindService(new Intent(BriarService.class.getName()),
-				serviceConnection, 0);
 	}
 
 	@Override
@@ -83,7 +76,7 @@ implements DatabaseListener, OnItemClickListener {
 		dbUiExecutor.execute(new Runnable() {
 			public void run() {
 				try {
-					serviceConnection.waitForDatabase();
+					lifecycleManager.waitForDatabase();
 					long now = System.currentTimeMillis();
 					List<GroupStatus> available = new ArrayList<GroupStatus>();
 					for(GroupStatus s : db.getAvailableGroups())
@@ -125,12 +118,6 @@ implements DatabaseListener, OnItemClickListener {
 		db.removeListener(this);
 	}
 
-	@Override
-	public void onDestroy() {
-		super.onDestroy();
-		unbindService(serviceConnection);
-	}
-
 	public void eventOccurred(DatabaseEvent e) {
 		if(e instanceof RemoteSubscriptionsUpdatedEvent) {
 			if(LOG.isLoggable(INFO))
diff --git a/briar-android/src/net/sf/briar/android/groups/ReadGroupPostActivity.java b/briar-android/src/net/sf/briar/android/groups/ReadGroupPostActivity.java
index df40160565..097ce6024a 100644
--- a/briar-android/src/net/sf/briar/android/groups/ReadGroupPostActivity.java
+++ b/briar-android/src/net/sf/briar/android/groups/ReadGroupPostActivity.java
@@ -19,8 +19,6 @@ import java.util.concurrent.Executor;
 import java.util.logging.Logger;
 
 import net.sf.briar.R;
-import net.sf.briar.android.BriarService;
-import net.sf.briar.android.BriarService.BriarServiceConnection;
 import net.sf.briar.android.widgets.HorizontalBorder;
 import net.sf.briar.android.widgets.HorizontalSpace;
 import net.sf.briar.api.AuthorId;
@@ -28,6 +26,7 @@ import net.sf.briar.api.android.DatabaseUiExecutor;
 import net.sf.briar.api.db.DatabaseComponent;
 import net.sf.briar.api.db.DbException;
 import net.sf.briar.api.db.NoSuchMessageException;
+import net.sf.briar.api.lifecycle.LifecycleManager;
 import net.sf.briar.api.messaging.GroupId;
 import net.sf.briar.api.messaging.MessageId;
 import net.sf.briar.api.messaging.Rating;
@@ -56,9 +55,6 @@ implements OnClickListener {
 	private static final Logger LOG =
 			Logger.getLogger(ReadGroupPostActivity.class.getName());
 
-	private final BriarServiceConnection serviceConnection =
-			new BriarServiceConnection();
-
 	private GroupId groupId = null;
 	private Rating rating = UNRATED;
 	private boolean read;
@@ -71,6 +67,7 @@ implements OnClickListener {
 	// Fields that are accessed from background threads must be volatile
 	@Inject private volatile DatabaseComponent db;
 	@Inject @DatabaseUiExecutor private volatile Executor dbUiExecutor;
+	@Inject private volatile LifecycleManager lifecycleManager;
 	private volatile MessageId messageId = null;
 	private volatile AuthorId authorId = null;
 
@@ -220,17 +217,13 @@ implements OnClickListener {
 		layout.addView(footer);
 
 		setContentView(layout);
-
-		// Bind to the service so we can wait for it to start
-		bindService(new Intent(BriarService.class.getName()),
-				serviceConnection, 0);
 	}
 
 	private void setReadInDatabase(final boolean read) {
 		dbUiExecutor.execute(new Runnable() {
 			public void run() {
 				try {
-					serviceConnection.waitForDatabase();
+					lifecycleManager.waitForDatabase();
 					long now = System.currentTimeMillis();
 					db.setReadFlag(messageId, read);
 					long duration = System.currentTimeMillis() - now;
@@ -263,7 +256,7 @@ implements OnClickListener {
 		dbUiExecutor.execute(new Runnable() {
 			public void run() {
 				try {
-					serviceConnection.waitForDatabase();
+					lifecycleManager.waitForDatabase();
 					long now = System.currentTimeMillis();
 					byte[] body = db.getMessageBody(messageId);
 					long duration = System.currentTimeMillis() - now;
@@ -302,12 +295,6 @@ implements OnClickListener {
 		state.putBoolean("net.sf.briar.READ", read);
 	}
 
-	@Override
-	public void onDestroy() {
-		super.onDestroy();
-		unbindService(serviceConnection);
-	}
-
 	public void onClick(View view) {
 		if(view == goodButton) {
 			if(rating == BAD) setRatingInDatabase(UNRATED);
@@ -337,7 +324,7 @@ implements OnClickListener {
 		dbUiExecutor.execute(new Runnable() {
 			public void run() {
 				try {
-					serviceConnection.waitForDatabase();
+					lifecycleManager.waitForDatabase();
 					long now = System.currentTimeMillis();
 					db.setRating(authorId, r);
 					long duration = System.currentTimeMillis() - now;
diff --git a/briar-android/src/net/sf/briar/android/groups/WriteGroupPostActivity.java b/briar-android/src/net/sf/briar/android/groups/WriteGroupPostActivity.java
index 70d72e288a..f3168ad89c 100644
--- a/briar-android/src/net/sf/briar/android/groups/WriteGroupPostActivity.java
+++ b/briar-android/src/net/sf/briar/android/groups/WriteGroupPostActivity.java
@@ -20,8 +20,6 @@ import java.util.concurrent.Executor;
 import java.util.logging.Logger;
 
 import net.sf.briar.R;
-import net.sf.briar.android.BriarService;
-import net.sf.briar.android.BriarService.BriarServiceConnection;
 import net.sf.briar.android.identity.CreateIdentityActivity;
 import net.sf.briar.android.identity.LocalAuthorItem;
 import net.sf.briar.android.identity.LocalAuthorItemComparator;
@@ -34,6 +32,7 @@ import net.sf.briar.api.crypto.CryptoComponent;
 import net.sf.briar.api.crypto.KeyParser;
 import net.sf.briar.api.db.DatabaseComponent;
 import net.sf.briar.api.db.DbException;
+import net.sf.briar.api.lifecycle.LifecycleManager;
 import net.sf.briar.api.messaging.Group;
 import net.sf.briar.api.messaging.GroupId;
 import net.sf.briar.api.messaging.Message;
@@ -61,9 +60,6 @@ implements OnItemSelectedListener, OnClickListener {
 	private static final Logger LOG =
 			Logger.getLogger(WriteGroupPostActivity.class.getName());
 
-	private final BriarServiceConnection serviceConnection =
-			new BriarServiceConnection();
-
 	@Inject private CryptoComponent crypto;
 	@Inject private MessageFactory messageFactory;
 	private LocalAuthorSpinnerAdapter fromAdapter = null;
@@ -77,6 +73,7 @@ implements OnItemSelectedListener, OnClickListener {
 	// Fields that are accessed from background threads must be volatile
 	@Inject private volatile DatabaseComponent db;
 	@Inject @DatabaseUiExecutor private volatile Executor dbUiExecutor;
+	@Inject private volatile LifecycleManager lifecycleManager;
 	private volatile LocalAuthor localAuthor = null;
 	private volatile Group group = null;
 	private volatile MessageId parentId = null;
@@ -155,10 +152,6 @@ implements OnItemSelectedListener, OnClickListener {
 		layout.addView(content);
 
 		setContentView(layout);
-
-		// Bind to the service so we can wait for it to start
-		bindService(new Intent(BriarService.class.getName()),
-				serviceConnection, 0);
 	}
 
 	@Override
@@ -172,7 +165,7 @@ implements OnItemSelectedListener, OnClickListener {
 		dbUiExecutor.execute(new Runnable() {
 			public void run() {
 				try {
-					serviceConnection.waitForDatabase();
+					lifecycleManager.waitForDatabase();
 					long now = System.currentTimeMillis();
 					Collection<LocalAuthor> localAuthors = db.getLocalAuthors();
 					long duration = System.currentTimeMillis() - now;
@@ -219,7 +212,7 @@ implements OnItemSelectedListener, OnClickListener {
 		dbUiExecutor.execute(new Runnable() {
 			public void run() {
 				try {
-					serviceConnection.waitForDatabase();
+					lifecycleManager.waitForDatabase();
 					List<Group> groups = new ArrayList<Group>();
 					long now = System.currentTimeMillis();
 					for(Group g : db.getSubscriptions())
@@ -274,12 +267,6 @@ implements OnItemSelectedListener, OnClickListener {
 		}
 	}
 
-	@Override
-	public void onDestroy() {
-		super.onDestroy();
-		unbindService(serviceConnection);
-	}
-
 	public void onItemSelected(AdapterView<?> parent, View view, int position,
 			long id) {
 		if(parent == fromSpinner) {
@@ -352,7 +339,7 @@ implements OnItemSelectedListener, OnClickListener {
 		dbUiExecutor.execute(new Runnable() {
 			public void run() {
 				try {
-					serviceConnection.waitForDatabase();
+					lifecycleManager.waitForDatabase();
 					long now = System.currentTimeMillis();
 					db.addLocalGroupMessage(m);
 					long duration = System.currentTimeMillis() - now;
diff --git a/briar-android/src/net/sf/briar/android/identity/CreateIdentityActivity.java b/briar-android/src/net/sf/briar/android/identity/CreateIdentityActivity.java
index 48f1c6bfb9..71e82cfbdd 100644
--- a/briar-android/src/net/sf/briar/android/identity/CreateIdentityActivity.java
+++ b/briar-android/src/net/sf/briar/android/identity/CreateIdentityActivity.java
@@ -20,8 +20,6 @@ import java.util.concurrent.Executor;
 import java.util.logging.Logger;
 
 import net.sf.briar.R;
-import net.sf.briar.android.BriarService;
-import net.sf.briar.android.BriarService.BriarServiceConnection;
 import net.sf.briar.api.AuthorFactory;
 import net.sf.briar.api.LocalAuthor;
 import net.sf.briar.api.android.DatabaseUiExecutor;
@@ -29,8 +27,8 @@ import net.sf.briar.api.crypto.CryptoComponent;
 import net.sf.briar.api.crypto.CryptoExecutor;
 import net.sf.briar.api.db.DatabaseComponent;
 import net.sf.briar.api.db.DbException;
+import net.sf.briar.api.lifecycle.LifecycleManager;
 import roboguice.activity.RoboActivity;
-import android.content.Intent;
 import android.os.Bundle;
 import android.view.KeyEvent;
 import android.view.View;
@@ -51,9 +49,6 @@ implements OnEditorActionListener, OnClickListener {
 	private static final Logger LOG =
 			Logger.getLogger(CreateIdentityActivity.class.getName());
 
-	private final BriarServiceConnection serviceConnection =
-			new BriarServiceConnection();
-
 	@Inject @CryptoExecutor private Executor cryptoExecutor;
 	private EditText nicknameEntry = null;
 	private Button createButton = null;
@@ -64,6 +59,7 @@ implements OnEditorActionListener, OnClickListener {
 	@Inject private volatile AuthorFactory authorFactory;
 	@Inject private volatile DatabaseComponent db;
 	@Inject @DatabaseUiExecutor private volatile Executor dbUiExecutor;
+	@Inject private volatile LifecycleManager lifecycleManager;
 
 	@Override
 	public void onCreate(Bundle state) {
@@ -109,16 +105,6 @@ implements OnEditorActionListener, OnClickListener {
 		layout.addView(progress);
 
 		setContentView(layout);
-
-		// Bind to the service so we can wait for it to start
-		bindService(new Intent(BriarService.class.getName()),
-				serviceConnection, 0);
-	}
-
-	@Override
-	public void onDestroy() {
-		super.onDestroy();
-		unbindService(serviceConnection);
 	}
 
 	public boolean onEditorAction(TextView textView, int actionId, KeyEvent e) {
@@ -154,7 +140,7 @@ implements OnEditorActionListener, OnClickListener {
 		dbUiExecutor.execute(new Runnable() {
 			public void run() {
 				try {
-					serviceConnection.waitForDatabase();
+					lifecycleManager.waitForDatabase();
 					long now = System.currentTimeMillis();
 					db.addLocalAuthor(a);
 					db.setRating(a.getId(), GOOD);
diff --git a/briar-android/src/net/sf/briar/android/invitation/AddContactActivity.java b/briar-android/src/net/sf/briar/android/invitation/AddContactActivity.java
index 926ce1df0e..204df03fe0 100644
--- a/briar-android/src/net/sf/briar/android/invitation/AddContactActivity.java
+++ b/briar-android/src/net/sf/briar/android/invitation/AddContactActivity.java
@@ -12,8 +12,6 @@ import java.util.Collection;
 import java.util.concurrent.Executor;
 import java.util.logging.Logger;
 
-import net.sf.briar.android.BriarService;
-import net.sf.briar.android.BriarService.BriarServiceConnection;
 import net.sf.briar.android.identity.LocalAuthorItem;
 import net.sf.briar.android.identity.LocalAuthorItemComparator;
 import net.sf.briar.android.identity.LocalAuthorSpinnerAdapter;
@@ -28,6 +26,7 @@ import net.sf.briar.api.invitation.InvitationListener;
 import net.sf.briar.api.invitation.InvitationState;
 import net.sf.briar.api.invitation.InvitationTask;
 import net.sf.briar.api.invitation.InvitationTaskFactory;
+import net.sf.briar.api.lifecycle.LifecycleManager;
 import roboguice.activity.RoboActivity;
 import android.bluetooth.BluetoothAdapter;
 import android.content.BroadcastReceiver;
@@ -46,9 +45,6 @@ implements InvitationListener {
 	private static final Logger LOG =
 			Logger.getLogger(AddContactActivity.class.getName());
 
-	private final BriarServiceConnection serviceConnection =
-			new BriarServiceConnection();
-
 	@Inject private CryptoComponent crypto;
 	@Inject private InvitationTaskFactory invitationTaskFactory;
 	@Inject private ReferenceManager referenceManager;
@@ -69,6 +65,7 @@ implements InvitationListener {
 	// Fields that are accessed from background threads must be volatile
 	@Inject private volatile DatabaseComponent db;
 	@Inject @DatabaseUiExecutor private volatile Executor dbUiExecutor;
+	@Inject private volatile LifecycleManager lifecycleManager;
 
 	@Override
 	public void onCreate(Bundle state) {
@@ -159,10 +156,6 @@ implements InvitationListener {
 			if(info.getNetworkId() != -1) networkName = info.getSSID();
 		}
 		view.wifiStateChanged();
-
-		// Bind to the service so we can wait for it to start
-		bindService(new Intent(BriarService.class.getName()),
-				serviceConnection, 0);
 	}
 
 	@Override
@@ -190,7 +183,6 @@ implements InvitationListener {
 		super.onDestroy();
 		if(task != null) task.removeListener(this);
 		unregisterReceiver(receiver);
-		unbindService(serviceConnection);
 	}
 
 	void setView(AddContactView view) {
@@ -216,7 +208,7 @@ implements InvitationListener {
 		dbUiExecutor.execute(new Runnable() {
 			public void run() {
 				try {
-					serviceConnection.waitForDatabase();
+					lifecycleManager.waitForDatabase();
 					long now = System.currentTimeMillis();
 					Collection<LocalAuthor> localAuthors = db.getLocalAuthors();
 					long duration = System.currentTimeMillis() - now;
diff --git a/briar-android/src/net/sf/briar/android/messages/ConversationActivity.java b/briar-android/src/net/sf/briar/android/messages/ConversationActivity.java
index 31b28f953a..3c6fc5cce9 100644
--- a/briar-android/src/net/sf/briar/android/messages/ConversationActivity.java
+++ b/briar-android/src/net/sf/briar/android/messages/ConversationActivity.java
@@ -15,8 +15,6 @@ import java.util.logging.Logger;
 
 import net.sf.briar.R;
 import net.sf.briar.android.AscendingHeaderComparator;
-import net.sf.briar.android.BriarService;
-import net.sf.briar.android.BriarService.BriarServiceConnection;
 import net.sf.briar.android.widgets.HorizontalBorder;
 import net.sf.briar.android.widgets.ListLoadingProgressBar;
 import net.sf.briar.api.AuthorId;
@@ -31,6 +29,7 @@ import net.sf.briar.api.db.event.DatabaseEvent;
 import net.sf.briar.api.db.event.DatabaseListener;
 import net.sf.briar.api.db.event.MessageExpiredEvent;
 import net.sf.briar.api.db.event.PrivateMessageAddedEvent;
+import net.sf.briar.api.lifecycle.LifecycleManager;
 import roboguice.activity.RoboActivity;
 import android.content.Intent;
 import android.os.Bundle;
@@ -50,9 +49,6 @@ implements DatabaseListener, OnClickListener, OnItemClickListener {
 	private static final Logger LOG =
 			Logger.getLogger(ConversationActivity.class.getName());
 
-	private final BriarServiceConnection serviceConnection =
-			new BriarServiceConnection();
-
 	private String contactName = null;
 	private ConversationAdapter adapter = null;
 	private ListView list = null;
@@ -61,6 +57,7 @@ implements DatabaseListener, OnClickListener, OnItemClickListener {
 	// Fields that are accessed from background threads must be volatile
 	@Inject private volatile DatabaseComponent db;
 	@Inject @DatabaseUiExecutor private volatile Executor dbUiExecutor;
+	@Inject private volatile LifecycleManager lifecycleManager;
 	private volatile ContactId contactId = null;
 	private volatile AuthorId localAuthorId = null;
 
@@ -106,10 +103,6 @@ implements DatabaseListener, OnClickListener, OnItemClickListener {
 		layout.addView(composeButton);
 
 		setContentView(layout);
-
-		// Bind to the service so we can wait for it to start
-		bindService(new Intent(BriarService.class.getName()),
-				serviceConnection, 0);
 	}
 
 	@Override
@@ -123,7 +116,7 @@ implements DatabaseListener, OnClickListener, OnItemClickListener {
 		dbUiExecutor.execute(new Runnable() {
 			public void run() {
 				try {
-					serviceConnection.waitForDatabase();
+					lifecycleManager.waitForDatabase();
 					long now = System.currentTimeMillis();
 					Collection<PrivateMessageHeader> headers =
 							db.getPrivateMessageHeaders(contactId);
@@ -196,12 +189,6 @@ implements DatabaseListener, OnClickListener, OnItemClickListener {
 		db.removeListener(this);
 	}
 
-	@Override
-	public void onDestroy() {
-		super.onDestroy();
-		unbindService(serviceConnection);
-	}
-
 	public void eventOccurred(DatabaseEvent e) {
 		if(e instanceof ContactRemovedEvent) {
 			ContactRemovedEvent c = (ContactRemovedEvent) e;
diff --git a/briar-android/src/net/sf/briar/android/messages/ConversationListActivity.java b/briar-android/src/net/sf/briar/android/messages/ConversationListActivity.java
index 9486a61506..2ffb72ba6d 100644
--- a/briar-android/src/net/sf/briar/android/messages/ConversationListActivity.java
+++ b/briar-android/src/net/sf/briar/android/messages/ConversationListActivity.java
@@ -15,8 +15,6 @@ import java.util.concurrent.Executor;
 import java.util.logging.Logger;
 
 import net.sf.briar.R;
-import net.sf.briar.android.BriarService;
-import net.sf.briar.android.BriarService.BriarServiceConnection;
 import net.sf.briar.android.invitation.AddContactActivity;
 import net.sf.briar.android.widgets.HorizontalBorder;
 import net.sf.briar.android.widgets.ListLoadingProgressBar;
@@ -32,6 +30,7 @@ import net.sf.briar.api.db.event.DatabaseEvent;
 import net.sf.briar.api.db.event.DatabaseListener;
 import net.sf.briar.api.db.event.MessageExpiredEvent;
 import net.sf.briar.api.db.event.PrivateMessageAddedEvent;
+import net.sf.briar.api.lifecycle.LifecycleManager;
 import roboguice.activity.RoboFragmentActivity;
 import android.content.Intent;
 import android.os.Bundle;
@@ -49,9 +48,6 @@ implements OnClickListener, DatabaseListener, NoContactsDialog.Listener {
 	private static final Logger LOG =
 			Logger.getLogger(ConversationListActivity.class.getName());
 
-	private final BriarServiceConnection serviceConnection =
-			new BriarServiceConnection();
-
 	private ConversationListAdapter adapter = null;
 	private ListView list = null;
 	private ListLoadingProgressBar loading = null;
@@ -59,6 +55,7 @@ implements OnClickListener, DatabaseListener, NoContactsDialog.Listener {
 	// Fields that are accessed from background threads must be volatile
 	@Inject private volatile DatabaseComponent db;
 	@Inject @DatabaseUiExecutor private volatile Executor dbUiExecutor;
+	@Inject private volatile LifecycleManager lifecycleManager;
 
 	@Override
 	public void onCreate(Bundle state) {
@@ -90,10 +87,6 @@ implements OnClickListener, DatabaseListener, NoContactsDialog.Listener {
 		layout.addView(composeButton);
 
 		setContentView(layout);
-
-		// Bind to the service so we can wait for it to start
-		bindService(new Intent(BriarService.class.getName()),
-				serviceConnection, 0);
 	}
 
 	@Override
@@ -108,7 +101,7 @@ implements OnClickListener, DatabaseListener, NoContactsDialog.Listener {
 		dbUiExecutor.execute(new Runnable() {
 			public void run() {
 				try {
-					serviceConnection.waitForDatabase();
+					lifecycleManager.waitForDatabase();
 					long now = System.currentTimeMillis();
 					for(Contact c : db.getContacts()) {
 						try {
@@ -191,12 +184,6 @@ implements OnClickListener, DatabaseListener, NoContactsDialog.Listener {
 		db.removeListener(this);
 	}
 
-	@Override
-	public void onDestroy() {
-		super.onDestroy();
-		unbindService(serviceConnection);
-	}
-
 	public void onClick(View view) {
 		if(adapter.isEmpty()) {
 			NoContactsDialog dialog = new NoContactsDialog();
@@ -225,7 +212,7 @@ implements OnClickListener, DatabaseListener, NoContactsDialog.Listener {
 		dbUiExecutor.execute(new Runnable() {
 			public void run() {
 				try {
-					serviceConnection.waitForDatabase();
+					lifecycleManager.waitForDatabase();
 					long now = System.currentTimeMillis();
 					Contact contact = db.getContact(c);
 					Collection<PrivateMessageHeader> headers =
diff --git a/briar-android/src/net/sf/briar/android/messages/ReadPrivateMessageActivity.java b/briar-android/src/net/sf/briar/android/messages/ReadPrivateMessageActivity.java
index 5d6245229a..5a66b32039 100644
--- a/briar-android/src/net/sf/briar/android/messages/ReadPrivateMessageActivity.java
+++ b/briar-android/src/net/sf/briar/android/messages/ReadPrivateMessageActivity.java
@@ -19,8 +19,6 @@ import java.util.concurrent.Executor;
 import java.util.logging.Logger;
 
 import net.sf.briar.R;
-import net.sf.briar.android.BriarService;
-import net.sf.briar.android.BriarService.BriarServiceConnection;
 import net.sf.briar.android.widgets.HorizontalBorder;
 import net.sf.briar.android.widgets.HorizontalSpace;
 import net.sf.briar.api.ContactId;
@@ -28,6 +26,7 @@ import net.sf.briar.api.android.DatabaseUiExecutor;
 import net.sf.briar.api.db.DatabaseComponent;
 import net.sf.briar.api.db.DbException;
 import net.sf.briar.api.db.NoSuchMessageException;
+import net.sf.briar.api.lifecycle.LifecycleManager;
 import net.sf.briar.api.messaging.MessageId;
 import net.sf.briar.api.messaging.Rating;
 import roboguice.activity.RoboActivity;
@@ -55,9 +54,6 @@ implements OnClickListener {
 	private static final Logger LOG =
 			Logger.getLogger(ReadPrivateMessageActivity.class.getName());
 
-	private final BriarServiceConnection serviceConnection =
-			new BriarServiceConnection();
-
 	private ContactId contactId = null;
 	private Rating rating = UNRATED;
 	private boolean read;
@@ -68,6 +64,7 @@ implements OnClickListener {
 	// Fields that are accessed from background threads must be volatile
 	@Inject private volatile DatabaseComponent db;
 	@Inject @DatabaseUiExecutor private volatile Executor dbUiExecutor;
+	@Inject private volatile LifecycleManager lifecycleManager;
 	private volatile MessageId messageId = null;
 
 	@Override
@@ -190,17 +187,13 @@ implements OnClickListener {
 		layout.addView(footer);
 
 		setContentView(layout);
-
-		// Bind to the service so we can wait for it to start
-		bindService(new Intent(BriarService.class.getName()),
-				serviceConnection, 0);
 	}
 
 	private void setReadInDatabase(final boolean read) {
 		dbUiExecutor.execute(new Runnable() {
 			public void run() {
 				try {
-					serviceConnection.waitForDatabase();
+					lifecycleManager.waitForDatabase();
 					long now = System.currentTimeMillis();
 					db.setReadFlag(messageId, read);
 					long duration = System.currentTimeMillis() - now;
@@ -233,7 +226,7 @@ implements OnClickListener {
 		dbUiExecutor.execute(new Runnable() {
 			public void run() {
 				try {
-					serviceConnection.waitForDatabase();
+					lifecycleManager.waitForDatabase();
 					long now = System.currentTimeMillis();
 					byte[] body = db.getMessageBody(messageId);
 					long duration = System.currentTimeMillis() - now;
@@ -272,12 +265,6 @@ implements OnClickListener {
 		state.putBoolean("net.sf.briar.READ", read);
 	}
 
-	@Override
-	public void onDestroy() {
-		super.onDestroy();
-		unbindService(serviceConnection);
-	}
-
 	public void onClick(View view) {
 		if(view == readButton) {
 			setReadInDatabase(!read);
diff --git a/briar-android/src/net/sf/briar/android/messages/WritePrivateMessageActivity.java b/briar-android/src/net/sf/briar/android/messages/WritePrivateMessageActivity.java
index f0b4b6bac2..78c46c0171 100644
--- a/briar-android/src/net/sf/briar/android/messages/WritePrivateMessageActivity.java
+++ b/briar-android/src/net/sf/briar/android/messages/WritePrivateMessageActivity.java
@@ -17,8 +17,6 @@ import java.util.concurrent.Executor;
 import java.util.logging.Logger;
 
 import net.sf.briar.R;
-import net.sf.briar.android.BriarService;
-import net.sf.briar.android.BriarService.BriarServiceConnection;
 import net.sf.briar.android.contact.ContactItem;
 import net.sf.briar.android.contact.ContactItemComparator;
 import net.sf.briar.android.contact.ContactSpinnerAdapter;
@@ -31,6 +29,7 @@ import net.sf.briar.api.LocalAuthor;
 import net.sf.briar.api.android.DatabaseUiExecutor;
 import net.sf.briar.api.db.DatabaseComponent;
 import net.sf.briar.api.db.DbException;
+import net.sf.briar.api.lifecycle.LifecycleManager;
 import net.sf.briar.api.messaging.Message;
 import net.sf.briar.api.messaging.MessageFactory;
 import net.sf.briar.api.messaging.MessageId;
@@ -56,9 +55,6 @@ implements OnItemSelectedListener, OnClickListener {
 	private static final Logger LOG =
 			Logger.getLogger(WritePrivateMessageActivity.class.getName());
 
-	private final BriarServiceConnection serviceConnection =
-			new BriarServiceConnection();
-
 	private TextView from = null;
 	private ContactSpinnerAdapter adapter = null;
 	private Spinner spinner = null;
@@ -68,6 +64,7 @@ implements OnItemSelectedListener, OnClickListener {
 	// Fields that are accessed from background threads must be volatile
 	@Inject private volatile DatabaseComponent db;
 	@Inject @DatabaseUiExecutor private volatile Executor dbUiExecutor;
+	@Inject private volatile LifecycleManager lifecycleManager;
 	@Inject private volatile MessageFactory messageFactory;
 	private volatile LocalAuthor localAuthor = null;
 	private volatile ContactId contactId = null;
@@ -139,10 +136,6 @@ implements OnItemSelectedListener, OnClickListener {
 		layout.addView(content);
 
 		setContentView(layout);
-
-		// Bind to the service so we can wait for it to start
-		bindService(new Intent(BriarService.class.getName()),
-				serviceConnection, 0);
 	}
 
 	@Override
@@ -155,7 +148,7 @@ implements OnItemSelectedListener, OnClickListener {
 		dbUiExecutor.execute(new Runnable() {
 			public void run() {
 				try {
-					serviceConnection.waitForDatabase();
+					lifecycleManager.waitForDatabase();
 					long now = System.currentTimeMillis();
 					Collection<Contact> contacts = db.getContacts();
 					long duration = System.currentTimeMillis() - now;
@@ -201,12 +194,6 @@ implements OnItemSelectedListener, OnClickListener {
 			state.putInt("net.sf.briar.CONTACT_ID", contactId.getInt());
 	}
 
-	@Override
-	public void onDestroy() {
-		super.onDestroy();
-		unbindService(serviceConnection);
-	}
-
 	public void onItemSelected(AdapterView<?> parent, View view, int position,
 			long id) {
 		ContactItem item = adapter.getItem(position);
@@ -227,7 +214,7 @@ implements OnItemSelectedListener, OnClickListener {
 		dbUiExecutor.execute(new Runnable() {
 			public void run() {
 				try {
-					serviceConnection.waitForDatabase();
+					lifecycleManager.waitForDatabase();
 					long now = System.currentTimeMillis();
 					localAuthor = db.getLocalAuthor(a);
 					long duration = System.currentTimeMillis() - now;
@@ -277,7 +264,7 @@ implements OnItemSelectedListener, OnClickListener {
 		dbUiExecutor.execute(new Runnable() {
 			public void run() {
 				try {
-					serviceConnection.waitForDatabase();
+					lifecycleManager.waitForDatabase();
 					Message m = messageFactory.createPrivateMessage(parentId,
 							"text/plain", body);
 					long now = System.currentTimeMillis();
diff --git a/briar-api/src/net/sf/briar/api/lifecycle/LifecycleManager.java b/briar-api/src/net/sf/briar/api/lifecycle/LifecycleManager.java
new file mode 100644
index 0000000000..acbe586ae9
--- /dev/null
+++ b/briar-api/src/net/sf/briar/api/lifecycle/LifecycleManager.java
@@ -0,0 +1,19 @@
+package net.sf.briar.api.lifecycle;
+
+public interface LifecycleManager {
+
+	/** Starts any services that need to be started at startup. */
+	public void startServices();
+
+	/** Stops any services that need to be stopped at shutdown. */
+	public void stopServices();
+
+	/** Waits for the database to be opened before returning. */
+	public void waitForDatabase() throws InterruptedException;
+
+	/** Waits for all services to start before returning. */
+	public void waitForStartup() throws InterruptedException;
+
+	/** Waits for all services to stop before returning. */
+	public void waitForShutdown() throws InterruptedException;
+}
diff --git a/briar-core/src/net/sf/briar/reliability/ReliabilityExecutor.java b/briar-api/src/net/sf/briar/api/reliability/ReliabilityExecutor.java
similarity index 82%
rename from briar-core/src/net/sf/briar/reliability/ReliabilityExecutor.java
rename to briar-api/src/net/sf/briar/api/reliability/ReliabilityExecutor.java
index d5ce360475..a7ca755f3d 100644
--- a/briar-core/src/net/sf/briar/reliability/ReliabilityExecutor.java
+++ b/briar-api/src/net/sf/briar/api/reliability/ReliabilityExecutor.java
@@ -1,4 +1,4 @@
-package net.sf.briar.reliability;
+package net.sf.briar.api.reliability;
 
 import static java.lang.annotation.ElementType.PARAMETER;
 import static java.lang.annotation.RetentionPolicy.RUNTIME;
@@ -12,4 +12,4 @@ import com.google.inject.BindingAnnotation;
 @BindingAnnotation
 @Target({ PARAMETER })
 @Retention(RUNTIME)
-@interface ReliabilityExecutor {}
\ No newline at end of file
+public @interface ReliabilityExecutor {}
\ No newline at end of file
diff --git a/briar-core/src/net/sf/briar/transport/IncomingConnectionExecutor.java b/briar-api/src/net/sf/briar/api/transport/IncomingConnectionExecutor.java
similarity index 82%
rename from briar-core/src/net/sf/briar/transport/IncomingConnectionExecutor.java
rename to briar-api/src/net/sf/briar/api/transport/IncomingConnectionExecutor.java
index 6bad0c126c..e3048a1eb5 100644
--- a/briar-core/src/net/sf/briar/transport/IncomingConnectionExecutor.java
+++ b/briar-api/src/net/sf/briar/api/transport/IncomingConnectionExecutor.java
@@ -1,4 +1,4 @@
-package net.sf.briar.transport;
+package net.sf.briar.api.transport;
 
 import static java.lang.annotation.ElementType.PARAMETER;
 import static java.lang.annotation.RetentionPolicy.RUNTIME;
@@ -14,4 +14,4 @@ import com.google.inject.BindingAnnotation;
 @BindingAnnotation
 @Target({ PARAMETER })
 @Retention(RUNTIME)
-@interface IncomingConnectionExecutor {}
\ No newline at end of file
+public @interface IncomingConnectionExecutor {}
\ No newline at end of file
diff --git a/briar-core/src/net/sf/briar/crypto/CryptoModule.java b/briar-core/src/net/sf/briar/crypto/CryptoModule.java
index d006d07c8c..2f23bfc630 100644
--- a/briar-core/src/net/sf/briar/crypto/CryptoModule.java
+++ b/briar-core/src/net/sf/briar/crypto/CryptoModule.java
@@ -1,27 +1,22 @@
 package net.sf.briar.crypto;
 
+import static java.util.concurrent.TimeUnit.SECONDS;
+
+import java.util.concurrent.BlockingQueue;
 import java.util.concurrent.Executor;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.LinkedBlockingQueue;
+import java.util.concurrent.RejectedExecutionHandler;
+import java.util.concurrent.ThreadPoolExecutor;
 
 import net.sf.briar.api.crypto.CryptoComponent;
 import net.sf.briar.api.crypto.CryptoExecutor;
-import net.sf.briar.util.BoundedExecutor;
 
 import com.google.inject.AbstractModule;
 import com.google.inject.Singleton;
 
 public class CryptoModule extends AbstractModule {
 
-	// FIXME: Determine suitable values for these constants empirically
-
-	/**
-	 * The maximum number of tasks that can be queued for execution before
-	 * submitting another task will block.
-	 */
-	private static final int MAX_QUEUED_EXECUTOR_TASKS = 10;
-
-	/** The minimum number of executor threads to keep in the pool. */
-	private static final int MIN_EXECUTOR_THREADS = 1;
-
 	/** The maximum number of executor threads. */
 	private static final int MAX_EXECUTOR_THREADS =
 			Runtime.getRuntime().availableProcessors();
@@ -30,9 +25,16 @@ public class CryptoModule extends AbstractModule {
 	protected void configure() {
 		bind(CryptoComponent.class).to(
 				CryptoComponentImpl.class).in(Singleton.class);
-		// The executor is bounded, so tasks must be independent and short-lived
-		bind(Executor.class).annotatedWith(CryptoExecutor.class).toInstance(
-				new BoundedExecutor(MAX_QUEUED_EXECUTOR_TASKS,
-						MIN_EXECUTOR_THREADS, MAX_EXECUTOR_THREADS));
+		// The queue is unbounded, so tasks can be dependent
+		BlockingQueue<Runnable> queue = new LinkedBlockingQueue<Runnable>();
+		// Discard tasks that are submitted during shutdown
+		RejectedExecutionHandler policy =
+				new ThreadPoolExecutor.DiscardPolicy();
+		// Create a limited # of threads and keep them in the pool for 60 secs
+		ExecutorService e = new ThreadPoolExecutor(0, MAX_EXECUTOR_THREADS,
+				60, SECONDS, queue, policy);
+		bind(Executor.class).annotatedWith(CryptoExecutor.class).toInstance(e);
+		bind(ExecutorService.class).annotatedWith(
+				CryptoExecutor.class).toInstance(e);
 	}
 }
diff --git a/briar-core/src/net/sf/briar/db/DatabaseModule.java b/briar-core/src/net/sf/briar/db/DatabaseModule.java
index a500f9cf93..e038be9c9a 100644
--- a/briar-core/src/net/sf/briar/db/DatabaseModule.java
+++ b/briar-core/src/net/sf/briar/db/DatabaseModule.java
@@ -1,11 +1,13 @@
 package net.sf.briar.db;
 
-import static java.util.concurrent.TimeUnit.MILLISECONDS;
+import static java.util.concurrent.TimeUnit.SECONDS;
 
 import java.sql.Connection;
 import java.util.concurrent.BlockingQueue;
 import java.util.concurrent.Executor;
+import java.util.concurrent.ExecutorService;
 import java.util.concurrent.LinkedBlockingQueue;
+import java.util.concurrent.RejectedExecutionHandler;
 import java.util.concurrent.ThreadPoolExecutor;
 
 import net.sf.briar.api.clock.Clock;
@@ -21,24 +23,24 @@ import com.google.inject.Singleton;
 
 public class DatabaseModule extends AbstractModule {
 
-	/**
-	 * The maximum number of database threads. When a task is submitted to the
-	 * database executor and no thread is available to run it, the task will be
-	 * queued.
-	 */
-	private static final int MAX_DB_THREADS = 10;
-
-	/** How many milliseconds to keep idle threads alive. */
-	private static final int DB_KEEPALIVE = 60 * 1000;
+	/** The maximum number of executor threads. */
+	private static final int MAX_EXECUTOR_THREADS = 10;
 
 	@Override
 	protected void configure() {
 		bind(DatabaseCleaner.class).to(DatabaseCleanerImpl.class);
-		// Use an unbounded queue to prevent deadlock between submitted tasks
+		// The queue is unbounded, so tasks can be dependent
 		BlockingQueue<Runnable> queue = new LinkedBlockingQueue<Runnable>();
-		bind(Executor.class).annotatedWith(DatabaseExecutor.class).toInstance(
-				new ThreadPoolExecutor(MAX_DB_THREADS, MAX_DB_THREADS,
-						DB_KEEPALIVE, MILLISECONDS, queue));
+		// Discard tasks that are submitted during shutdown
+		RejectedExecutionHandler policy =
+				new ThreadPoolExecutor.DiscardPolicy();
+		// Create a limited # of threads and keep them in the pool for 60 secs
+		ExecutorService e = new ThreadPoolExecutor(0, MAX_EXECUTOR_THREADS,
+				60, SECONDS, queue, policy);
+		bind(Executor.class).annotatedWith(
+				DatabaseExecutor.class).toInstance(e);
+		bind(ExecutorService.class).annotatedWith(
+				DatabaseExecutor.class).toInstance(e);
 	}
 
 	@Provides
diff --git a/briar-core/src/net/sf/briar/lifecycle/LifecycleManagerImpl.java b/briar-core/src/net/sf/briar/lifecycle/LifecycleManagerImpl.java
new file mode 100644
index 0000000000..d0c414cf31
--- /dev/null
+++ b/briar-core/src/net/sf/briar/lifecycle/LifecycleManagerImpl.java
@@ -0,0 +1,116 @@
+package net.sf.briar.lifecycle;
+
+import static java.util.logging.Level.INFO;
+import static java.util.logging.Level.WARNING;
+
+import java.io.IOException;
+import java.util.concurrent.CountDownLatch;
+import java.util.concurrent.ExecutorService;
+import java.util.logging.Logger;
+
+import net.sf.briar.api.crypto.CryptoExecutor;
+import net.sf.briar.api.crypto.KeyManager;
+import net.sf.briar.api.db.DatabaseComponent;
+import net.sf.briar.api.db.DatabaseExecutor;
+import net.sf.briar.api.db.DbException;
+import net.sf.briar.api.lifecycle.LifecycleManager;
+import net.sf.briar.api.plugins.PluginExecutor;
+import net.sf.briar.api.plugins.PluginManager;
+import net.sf.briar.api.reliability.ReliabilityExecutor;
+import net.sf.briar.api.transport.IncomingConnectionExecutor;
+
+import com.google.inject.Inject;
+
+class LifecycleManagerImpl implements LifecycleManager {
+
+	private static final Logger LOG =
+			Logger.getLogger(LifecycleManagerImpl.class.getName());
+
+	private final DatabaseComponent db;
+	private final KeyManager keyManager;
+	private final PluginManager pluginManager;
+	private final ExecutorService cryptoExecutor;
+	private final ExecutorService dbExecutor;
+	private final ExecutorService connExecutor;
+	private final ExecutorService pluginExecutor;
+	private final ExecutorService reliabilityExecutor;
+	private final CountDownLatch dbLatch = new CountDownLatch(1);
+	private final CountDownLatch startupLatch = new CountDownLatch(1);
+	private final CountDownLatch shutdownLatch = new CountDownLatch(1);
+
+	@Inject
+	LifecycleManagerImpl(DatabaseComponent db, KeyManager keyManager,
+			PluginManager pluginManager,
+			@CryptoExecutor ExecutorService cryptoExecutor,
+			@DatabaseExecutor ExecutorService dbExecutor,
+			@IncomingConnectionExecutor ExecutorService connExecutor,
+			@PluginExecutor ExecutorService pluginExecutor,
+			@ReliabilityExecutor ExecutorService reliabilityExecutor) {
+		this.db = db;
+		this.keyManager = keyManager;
+		this.pluginManager = pluginManager;
+		this.cryptoExecutor = cryptoExecutor;
+		this.dbExecutor = dbExecutor;
+		this.connExecutor = connExecutor;
+		this.pluginExecutor = pluginExecutor;
+		this.reliabilityExecutor = reliabilityExecutor;
+	}
+
+	public void startServices() {
+		try {
+			if(LOG.isLoggable(INFO)) LOG.info("Starting");
+			boolean reopened = db.open();
+			if(LOG.isLoggable(INFO)) {
+				if(reopened) LOG.info("Database reopened");
+				else LOG.info("Database created");
+			}
+			dbLatch.countDown();
+			keyManager.start();
+			if(LOG.isLoggable(INFO)) LOG.info("Key manager started");
+			int pluginsStarted = pluginManager.start();
+			if(LOG.isLoggable(INFO))
+				LOG.info(pluginsStarted + " plugins started");
+			startupLatch.countDown();
+		} catch(DbException e) {
+			if(LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+		} catch(IOException e) {
+			if(LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+		}
+	}
+
+	public void stopServices() {
+		try {
+			if(LOG.isLoggable(INFO)) LOG.info("Shutting down");
+			int pluginsStopped = pluginManager.stop();
+			if(LOG.isLoggable(INFO))
+				LOG.info(pluginsStopped + " plugins stopped");
+			keyManager.stop();
+			if(LOG.isLoggable(INFO)) LOG.info("Key manager stopped");
+			db.close();
+			if(LOG.isLoggable(INFO)) LOG.info("Database closed");
+			cryptoExecutor.shutdownNow();
+			dbExecutor.shutdownNow();
+			connExecutor.shutdownNow();
+			pluginExecutor.shutdownNow();
+			reliabilityExecutor.shutdownNow();
+			if(LOG.isLoggable(INFO)) LOG.info("Executors shut down");
+			shutdownLatch.countDown();
+		} catch(DbException e) {
+			if(LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+		} catch(IOException e) {
+			if(LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
+		}
+	}
+
+	public void waitForDatabase() throws InterruptedException {
+		dbLatch.await();
+	}
+
+	public void waitForStartup() throws InterruptedException {
+		startupLatch.await();
+	}
+
+	public void waitForShutdown() throws InterruptedException {
+		shutdownLatch.await();
+	}
+}
diff --git a/briar-core/src/net/sf/briar/lifecycle/LifecycleModule.java b/briar-core/src/net/sf/briar/lifecycle/LifecycleModule.java
index 241e41a09a..f4b214dea4 100644
--- a/briar-core/src/net/sf/briar/lifecycle/LifecycleModule.java
+++ b/briar-core/src/net/sf/briar/lifecycle/LifecycleModule.java
@@ -1,14 +1,18 @@
 package net.sf.briar.lifecycle;
 
+import net.sf.briar.api.lifecycle.LifecycleManager;
 import net.sf.briar.api.lifecycle.ShutdownManager;
 import net.sf.briar.util.OsUtils;
 
 import com.google.inject.AbstractModule;
+import com.google.inject.Singleton;
 
 public class LifecycleModule extends AbstractModule {
 
 	@Override
 	protected void configure() {
+		bind(LifecycleManager.class).to(LifecycleManagerImpl.class).in(
+				Singleton.class);
 		if(OsUtils.isWindows())
 			bind(ShutdownManager.class).to(WindowsShutdownManagerImpl.class);
 		else bind(ShutdownManager.class).to(ShutdownManagerImpl.class);
diff --git a/briar-core/src/net/sf/briar/plugins/JavaSePluginsModule.java b/briar-core/src/net/sf/briar/plugins/JavaSePluginsModule.java
index 894f99df46..762a32e0af 100644
--- a/briar-core/src/net/sf/briar/plugins/JavaSePluginsModule.java
+++ b/briar-core/src/net/sf/briar/plugins/JavaSePluginsModule.java
@@ -2,7 +2,7 @@ package net.sf.briar.plugins;
 
 import java.util.Arrays;
 import java.util.Collection;
-import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executor;
 
 import net.sf.briar.api.crypto.CryptoComponent;
 import net.sf.briar.api.lifecycle.ShutdownManager;
@@ -28,7 +28,7 @@ public class JavaSePluginsModule extends AbstractModule {
 
 	@Provides
 	SimplexPluginConfig getSimplexPluginConfig(
-			@PluginExecutor ExecutorService pluginExecutor) {
+			@PluginExecutor Executor pluginExecutor) {
 		SimplexPluginFactory removable =
 				new RemovableDrivePluginFactory(pluginExecutor);
 		final Collection<SimplexPluginFactory> factories =
@@ -42,7 +42,7 @@ public class JavaSePluginsModule extends AbstractModule {
 
 	@Provides
 	DuplexPluginConfig getDuplexPluginConfig(
-			@PluginExecutor ExecutorService pluginExecutor,
+			@PluginExecutor Executor pluginExecutor,
 			CryptoComponent crypto, ReliabilityLayerFactory reliabilityFactory,
 			ShutdownManager shutdownManager) {
 		DuplexPluginFactory bluetooth = new BluetoothPluginFactory(
diff --git a/briar-core/src/net/sf/briar/plugins/PluginManagerImpl.java b/briar-core/src/net/sf/briar/plugins/PluginManagerImpl.java
index 90b69bda0b..bd259b8e59 100644
--- a/briar-core/src/net/sf/briar/plugins/PluginManagerImpl.java
+++ b/briar-core/src/net/sf/briar/plugins/PluginManagerImpl.java
@@ -11,7 +11,7 @@ import java.util.List;
 import java.util.Map;
 import java.util.concurrent.CopyOnWriteArrayList;
 import java.util.concurrent.CountDownLatch;
-import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executor;
 import java.util.concurrent.atomic.AtomicInteger;
 import java.util.logging.Logger;
 
@@ -19,7 +19,6 @@ import net.sf.briar.api.ContactId;
 import net.sf.briar.api.TransportConfig;
 import net.sf.briar.api.TransportId;
 import net.sf.briar.api.TransportProperties;
-import net.sf.briar.api.android.AndroidExecutor;
 import net.sf.briar.api.db.DatabaseComponent;
 import net.sf.briar.api.db.DbException;
 import net.sf.briar.api.plugins.Plugin;
@@ -49,8 +48,7 @@ class PluginManagerImpl implements PluginManager {
 	private static final Logger LOG =
 			Logger.getLogger(PluginManagerImpl.class.getName());
 
-	private final ExecutorService pluginExecutor;
-	private final AndroidExecutor androidExecutor;
+	private final Executor pluginExecutor;
 	private final SimplexPluginConfig simplexPluginConfig;
 	private final DuplexPluginConfig duplexPluginConfig;
 	private final DatabaseComponent db;
@@ -61,14 +59,12 @@ class PluginManagerImpl implements PluginManager {
 	private final List<DuplexPlugin> duplexPlugins;
 
 	@Inject
-	PluginManagerImpl(@PluginExecutor ExecutorService pluginExecutor,
-			AndroidExecutor androidExecutor,
+	PluginManagerImpl(@PluginExecutor Executor pluginExecutor,
 			SimplexPluginConfig simplexPluginConfig, 
 			DuplexPluginConfig duplexPluginConfig, DatabaseComponent db,
 			Poller poller, ConnectionDispatcher dispatcher,
 			UiCallback uiCallback) {
 		this.pluginExecutor = pluginExecutor;
-		this.androidExecutor = androidExecutor;
 		this.simplexPluginConfig = simplexPluginConfig;
 		this.duplexPluginConfig = duplexPluginConfig;
 		this.db = db;
@@ -144,10 +140,6 @@ class PluginManagerImpl implements PluginManager {
 			Thread.currentThread().interrupt();
 			return 0;
 		}
-		// Shut down the executors
-		if(LOG.isLoggable(INFO)) LOG.info("Stopping executors");
-		pluginExecutor.shutdown();
-		androidExecutor.shutdown();
 		// Return the number of plugins successfully stopped
 		return stopped.get();
 	}
diff --git a/briar-core/src/net/sf/briar/plugins/PluginsModule.java b/briar-core/src/net/sf/briar/plugins/PluginsModule.java
index 3653e6bb2b..6b584b38ac 100644
--- a/briar-core/src/net/sf/briar/plugins/PluginsModule.java
+++ b/briar-core/src/net/sf/briar/plugins/PluginsModule.java
@@ -1,7 +1,13 @@
 package net.sf.briar.plugins;
 
+import static java.util.concurrent.TimeUnit.SECONDS;
+
+import java.util.concurrent.BlockingQueue;
+import java.util.concurrent.Executor;
 import java.util.concurrent.ExecutorService;
-import java.util.concurrent.Executors;
+import java.util.concurrent.RejectedExecutionHandler;
+import java.util.concurrent.SynchronousQueue;
+import java.util.concurrent.ThreadPoolExecutor;
 
 import net.sf.briar.api.plugins.PluginExecutor;
 import net.sf.briar.api.plugins.PluginManager;
@@ -13,12 +19,19 @@ public class PluginsModule extends AbstractModule {
 
 	@Override
 	protected void configure() {
-		// The executor is unbounded, so tasks can be dependent or long-lived
-		ExecutorService e = Executors.newCachedThreadPool();
-		bind(ExecutorService.class).annotatedWith(
-				PluginExecutor.class).toInstance(e);
 		bind(PluginManager.class).to(
 				PluginManagerImpl.class).in(Singleton.class);
 		bind(Poller.class).to(PollerImpl.class);
+		// The thread pool is unbounded, so use direct handoff
+		BlockingQueue<Runnable> queue = new SynchronousQueue<Runnable>();
+		// Discard tasks that are submitted during shutdown
+		RejectedExecutionHandler policy =
+				new ThreadPoolExecutor.DiscardPolicy();
+		// Create threads as required and keep them in the pool for 60 seconds
+		ExecutorService e = new ThreadPoolExecutor(0, Integer.MAX_VALUE,
+				60, SECONDS, queue, policy);
+		bind(Executor.class).annotatedWith(PluginExecutor.class).toInstance(e);
+		bind(ExecutorService.class).annotatedWith(
+				PluginExecutor.class).toInstance(e);
 	}
 }
diff --git a/briar-core/src/net/sf/briar/plugins/PollerImpl.java b/briar-core/src/net/sf/briar/plugins/PollerImpl.java
index c5ea77feab..30a356feef 100644
--- a/briar-core/src/net/sf/briar/plugins/PollerImpl.java
+++ b/briar-core/src/net/sf/briar/plugins/PollerImpl.java
@@ -5,7 +5,7 @@ import static java.util.logging.Level.INFO;
 import java.util.Collection;
 import java.util.SortedSet;
 import java.util.TreeSet;
-import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executor;
 import java.util.logging.Logger;
 
 import net.sf.briar.api.ContactId;
@@ -21,13 +21,13 @@ class PollerImpl implements Poller, Runnable {
 	private static final Logger LOG =
 			Logger.getLogger(PollerImpl.class.getName());
 
-	private final ExecutorService pluginExecutor;
+	private final Executor pluginExecutor;
 	private final ConnectionRegistry connRegistry;
 	private final Clock clock;
 	private final SortedSet<PollTime> pollTimes;
 
 	@Inject
-	PollerImpl(@PluginExecutor ExecutorService pluginExecutor,
+	PollerImpl(@PluginExecutor Executor pluginExecutor,
 			ConnectionRegistry connRegistry, Clock clock) {
 		this.pluginExecutor = pluginExecutor;
 		this.connRegistry = connRegistry;
@@ -71,7 +71,7 @@ class PollerImpl implements Poller, Runnable {
 							connRegistry.getConnectedContacts(p.plugin.getId());
 					if(LOG.isLoggable(INFO))
 						LOG.info("Polling " + p.plugin.getClass().getName());
-					pluginExecutor.submit(new Runnable() {
+					pluginExecutor.execute(new Runnable() {
 						public void run() {
 							p.plugin.poll(connected);
 						}
diff --git a/briar-core/src/net/sf/briar/reliability/ReliabilityLayerFactoryImpl.java b/briar-core/src/net/sf/briar/reliability/ReliabilityLayerFactoryImpl.java
index 4b207b1cda..411f817b07 100644
--- a/briar-core/src/net/sf/briar/reliability/ReliabilityLayerFactoryImpl.java
+++ b/briar-core/src/net/sf/briar/reliability/ReliabilityLayerFactoryImpl.java
@@ -4,6 +4,7 @@ import java.util.concurrent.Executor;
 
 import net.sf.briar.api.clock.Clock;
 import net.sf.briar.api.clock.SystemClock;
+import net.sf.briar.api.reliability.ReliabilityExecutor;
 import net.sf.briar.api.reliability.ReliabilityLayer;
 import net.sf.briar.api.reliability.ReliabilityLayerFactory;
 import net.sf.briar.api.reliability.WriteHandler;
diff --git a/briar-core/src/net/sf/briar/reliability/ReliabilityModule.java b/briar-core/src/net/sf/briar/reliability/ReliabilityModule.java
index a30ae78d79..37d4a610ef 100644
--- a/briar-core/src/net/sf/briar/reliability/ReliabilityModule.java
+++ b/briar-core/src/net/sf/briar/reliability/ReliabilityModule.java
@@ -1,8 +1,15 @@
 package net.sf.briar.reliability;
 
+import static java.util.concurrent.TimeUnit.SECONDS;
+
+import java.util.concurrent.BlockingQueue;
 import java.util.concurrent.Executor;
-import java.util.concurrent.Executors;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.RejectedExecutionHandler;
+import java.util.concurrent.SynchronousQueue;
+import java.util.concurrent.ThreadPoolExecutor;
 
+import net.sf.briar.api.reliability.ReliabilityExecutor;
 import net.sf.briar.api.reliability.ReliabilityLayerFactory;
 
 import com.google.inject.AbstractModule;
@@ -11,11 +18,19 @@ public class ReliabilityModule extends AbstractModule {
 
 	@Override
 	protected void configure() {
-		// The executor is unbounded - tasks are expected to be long-lived
-		Executor e = Executors.newCachedThreadPool();
-		bind(Executor.class).annotatedWith(
-				ReliabilityExecutor.class).toInstance(e);
 		bind(ReliabilityLayerFactory.class).to(
 				ReliabilityLayerFactoryImpl.class);
+		// The thread pool is unbounded, so use direct handoff
+		BlockingQueue<Runnable> queue = new SynchronousQueue<Runnable>();
+		// Discard tasks that are submitted during shutdown
+		RejectedExecutionHandler policy =
+				new ThreadPoolExecutor.DiscardPolicy();
+		// Create threads as required and keep them in the pool for 60 seconds
+		ExecutorService e = new ThreadPoolExecutor(0, Integer.MAX_VALUE,
+				60, SECONDS, queue, policy);
+		bind(Executor.class).annotatedWith(
+				ReliabilityExecutor.class).toInstance(e);
+		bind(ExecutorService.class).annotatedWith(
+				ReliabilityExecutor.class).toInstance(e);
 	}
 }
diff --git a/briar-core/src/net/sf/briar/transport/ConnectionDispatcherImpl.java b/briar-core/src/net/sf/briar/transport/ConnectionDispatcherImpl.java
index ddb612ba03..ecd57aa2b7 100644
--- a/briar-core/src/net/sf/briar/transport/ConnectionDispatcherImpl.java
+++ b/briar-core/src/net/sf/briar/transport/ConnectionDispatcherImpl.java
@@ -20,6 +20,7 @@ import net.sf.briar.api.plugins.simplex.SimplexTransportWriter;
 import net.sf.briar.api.transport.ConnectionContext;
 import net.sf.briar.api.transport.ConnectionDispatcher;
 import net.sf.briar.api.transport.ConnectionRecogniser;
+import net.sf.briar.api.transport.IncomingConnectionExecutor;
 
 import com.google.inject.Inject;
 
diff --git a/briar-core/src/net/sf/briar/transport/TransportModule.java b/briar-core/src/net/sf/briar/transport/TransportModule.java
index 0cd57082f9..4985bc0654 100644
--- a/briar-core/src/net/sf/briar/transport/TransportModule.java
+++ b/briar-core/src/net/sf/briar/transport/TransportModule.java
@@ -1,7 +1,13 @@
 package net.sf.briar.transport;
 
+import static java.util.concurrent.TimeUnit.SECONDS;
+
+import java.util.concurrent.BlockingQueue;
 import java.util.concurrent.Executor;
-import java.util.concurrent.Executors;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.RejectedExecutionHandler;
+import java.util.concurrent.SynchronousQueue;
+import java.util.concurrent.ThreadPoolExecutor;
 
 import net.sf.briar.api.crypto.KeyManager;
 import net.sf.briar.api.transport.ConnectionDispatcher;
@@ -9,6 +15,7 @@ import net.sf.briar.api.transport.ConnectionReaderFactory;
 import net.sf.briar.api.transport.ConnectionRecogniser;
 import net.sf.briar.api.transport.ConnectionRegistry;
 import net.sf.briar.api.transport.ConnectionWriterFactory;
+import net.sf.briar.api.transport.IncomingConnectionExecutor;
 
 import com.google.inject.AbstractModule;
 import com.google.inject.Singleton;
@@ -25,10 +32,18 @@ public class TransportModule extends AbstractModule {
 		bind(ConnectionRegistry.class).toInstance(new ConnectionRegistryImpl());
 		bind(ConnectionWriterFactory.class).to(
 				ConnectionWriterFactoryImpl.class);
-		// The executor is unbounded, so tasks can be dependent or long-lived
-		Executor e = Executors.newCachedThreadPool();
+		bind(KeyManager.class).to(KeyManagerImpl.class).in(Singleton.class);
+		// The thread pool is unbounded, so use direct handoff
+		BlockingQueue<Runnable> queue = new SynchronousQueue<Runnable>();
+		// Discard tasks that are submitted during shutdown
+		RejectedExecutionHandler policy =
+				new ThreadPoolExecutor.DiscardPolicy();
+		// Create threads as required and keep them in the pool for 60 seconds
+		ExecutorService e = new ThreadPoolExecutor(0, Integer.MAX_VALUE,
+				60, SECONDS, queue, policy);
 		bind(Executor.class).annotatedWith(
 				IncomingConnectionExecutor.class).toInstance(e);
-		bind(KeyManager.class).to(KeyManagerImpl.class).in(Singleton.class);
+		bind(ExecutorService.class).annotatedWith(
+				IncomingConnectionExecutor.class).toInstance(e);
 	}
 }
diff --git a/briar-core/src/net/sf/briar/util/BoundedExecutor.java b/briar-core/src/net/sf/briar/util/BoundedExecutor.java
deleted file mode 100644
index c7d77a8af2..0000000000
--- a/briar-core/src/net/sf/briar/util/BoundedExecutor.java
+++ /dev/null
@@ -1,58 +0,0 @@
-package net.sf.briar.util;
-
-import static java.util.concurrent.TimeUnit.SECONDS;
-import static java.util.logging.Level.INFO;
-import static java.util.logging.Level.WARNING;
-
-import java.util.concurrent.BlockingQueue;
-import java.util.concurrent.Executor;
-import java.util.concurrent.LinkedBlockingQueue;
-import java.util.concurrent.RejectedExecutionException;
-import java.util.concurrent.Semaphore;
-import java.util.concurrent.ThreadPoolExecutor;
-import java.util.logging.Logger;
-
-/**
- * An executor that limits the number of concurrently executing tasks and the
- * number of tasks queued for execution.
- */
-public class BoundedExecutor implements Executor {
-
-	private static final Logger LOG =
-		Logger.getLogger(BoundedExecutor.class.getName());
-
-	private final Semaphore semaphore;
-	private final BlockingQueue<Runnable> queue;
-	private final Executor executor;
-
-	public BoundedExecutor(int maxQueued, int minThreads, int maxThreads) {
-		semaphore = new Semaphore(maxQueued + maxThreads);
-		queue = new LinkedBlockingQueue<Runnable>();
-		executor = new ThreadPoolExecutor(minThreads, maxThreads, 60, SECONDS,
-				queue);
-	}
-
-	public void execute(final Runnable r) {
-		try {
-			semaphore.acquire();
-			executor.execute(new Runnable() {
-				public void run() {
-					try {
-						r.run();
-					} finally {
-						semaphore.release();
-					}
-				}
-			});
-		} catch(InterruptedException e) {
-			if(LOG.isLoggable(INFO))
-				LOG.info("Interrupted while queueing task");
-			Thread.currentThread().interrupt();
-			throw new RejectedExecutionException();
-		} catch(RejectedExecutionException e) {
-			if(LOG.isLoggable(WARNING)) LOG.log(WARNING, e.toString(), e);
-			semaphore.release();
-			throw e;
-		}
-	}
-}
diff --git a/briar-tests/src/net/sf/briar/ProtocolIntegrationTest.java b/briar-tests/src/net/sf/briar/ProtocolIntegrationTest.java
index 76e5fecb38..ee0be61085 100644
--- a/briar-tests/src/net/sf/briar/ProtocolIntegrationTest.java
+++ b/briar-tests/src/net/sf/briar/ProtocolIntegrationTest.java
@@ -48,6 +48,9 @@ import net.sf.briar.lifecycle.LifecycleModule;
 import net.sf.briar.messaging.MessagingModule;
 import net.sf.briar.messaging.duplex.DuplexMessagingModule;
 import net.sf.briar.messaging.simplex.SimplexMessagingModule;
+import net.sf.briar.plugins.JavaSePluginsModule;
+import net.sf.briar.plugins.PluginsModule;
+import net.sf.briar.reliability.ReliabilityModule;
 import net.sf.briar.serial.SerialModule;
 import net.sf.briar.transport.TransportModule;
 
@@ -79,9 +82,11 @@ public class ProtocolIntegrationTest extends BriarTestCase {
 	public ProtocolIntegrationTest() throws Exception {
 		super();
 		Injector i = Guice.createInjector(new TestDatabaseModule(),
-				new ClockModule(), new CryptoModule(), new DatabaseModule(),
-				new LifecycleModule(), new MessagingModule(),
-				new DuplexMessagingModule(), new SimplexMessagingModule(),
+				new TestUiModule(), new ClockModule(), new CryptoModule(),
+				new DatabaseModule(), new LifecycleModule(),
+				new MessagingModule(), new DuplexMessagingModule(),
+				new SimplexMessagingModule(), new PluginsModule(),
+				new JavaSePluginsModule(), new ReliabilityModule(),
 				new SerialModule(), new TransportModule());
 		connectionReaderFactory = i.getInstance(ConnectionReaderFactory.class);
 		connectionWriterFactory = i.getInstance(ConnectionWriterFactory.class);
diff --git a/briar-tests/src/net/sf/briar/TestUiModule.java b/briar-tests/src/net/sf/briar/TestUiModule.java
new file mode 100644
index 0000000000..c8cd610b6c
--- /dev/null
+++ b/briar-tests/src/net/sf/briar/TestUiModule.java
@@ -0,0 +1,24 @@
+package net.sf.briar;
+
+import net.sf.briar.api.ui.UiCallback;
+
+import com.google.inject.AbstractModule;
+
+public class TestUiModule extends AbstractModule {
+
+	@Override
+	protected void configure() {
+		bind(UiCallback.class).toInstance(new UiCallback() {
+
+			public int showChoice(String[] options, String... message) {
+				return -1;
+			}
+
+			public boolean showConfirmationMessage(String... message) {
+				return false;
+			}
+
+			public void showMessage(String... message) {}			
+		});
+	}
+}
diff --git a/briar-tests/src/net/sf/briar/messaging/simplex/SimplexMessagingIntegrationTest.java b/briar-tests/src/net/sf/briar/messaging/simplex/SimplexMessagingIntegrationTest.java
index 615c2e8069..3d4c0bc6ad 100644
--- a/briar-tests/src/net/sf/briar/messaging/simplex/SimplexMessagingIntegrationTest.java
+++ b/briar-tests/src/net/sf/briar/messaging/simplex/SimplexMessagingIntegrationTest.java
@@ -9,6 +9,7 @@ import java.util.Random;
 
 import net.sf.briar.BriarTestCase;
 import net.sf.briar.TestDatabaseModule;
+import net.sf.briar.TestUiModule;
 import net.sf.briar.TestUtils;
 import net.sf.briar.api.Author;
 import net.sf.briar.api.AuthorId;
@@ -38,6 +39,9 @@ import net.sf.briar.lifecycle.LifecycleModule;
 import net.sf.briar.messaging.MessagingModule;
 import net.sf.briar.messaging.duplex.DuplexMessagingModule;
 import net.sf.briar.plugins.ImmediateExecutor;
+import net.sf.briar.plugins.JavaSePluginsModule;
+import net.sf.briar.plugins.PluginsModule;
+import net.sf.briar.reliability.ReliabilityModule;
 import net.sf.briar.serial.SerialModule;
 import net.sf.briar.transport.TransportModule;
 
@@ -80,11 +84,13 @@ public class SimplexMessagingIntegrationTest extends BriarTestCase {
 	}
 
 	private Injector createInjector(File dir) {
-		return Guice.createInjector(new ClockModule(), new CryptoModule(),
+		return Guice.createInjector(new TestDatabaseModule(dir),
+				new TestUiModule(), new ClockModule(), new CryptoModule(),
 				new DatabaseModule(), new LifecycleModule(),
-				new MessagingModule(), new SerialModule(),
-				new TestDatabaseModule(dir), new SimplexMessagingModule(),
-				new TransportModule(), new DuplexMessagingModule());
+				new MessagingModule(), new DuplexMessagingModule(),
+				new SimplexMessagingModule(), new PluginsModule(),
+				new JavaSePluginsModule(), new ReliabilityModule(),
+				new SerialModule(), new TransportModule());
 	}
 
 	@Test
diff --git a/briar-tests/src/net/sf/briar/plugins/PluginManagerImplTest.java b/briar-tests/src/net/sf/briar/plugins/PluginManagerImplTest.java
index ed25414216..d224b2f142 100644
--- a/briar-tests/src/net/sf/briar/plugins/PluginManagerImplTest.java
+++ b/briar-tests/src/net/sf/briar/plugins/PluginManagerImplTest.java
@@ -1,13 +1,12 @@
 package net.sf.briar.plugins;
 
 import java.util.Arrays;
-import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executor;
 import java.util.concurrent.Executors;
 
 import net.sf.briar.BriarTestCase;
 import net.sf.briar.TestUtils;
 import net.sf.briar.api.TransportId;
-import net.sf.briar.api.android.AndroidExecutor;
 import net.sf.briar.api.db.DatabaseComponent;
 import net.sf.briar.api.plugins.duplex.DuplexPlugin;
 import net.sf.briar.api.plugins.duplex.DuplexPluginCallback;
@@ -29,9 +28,7 @@ public class PluginManagerImplTest extends BriarTestCase {
 	@Test
 	public void testStartAndStop() throws Exception {
 		Mockery context = new Mockery();
-		final ExecutorService pluginExecutor = Executors.newCachedThreadPool();
-		final AndroidExecutor androidExecutor =
-				context.mock(AndroidExecutor.class);
+		final Executor pluginExecutor = Executors.newCachedThreadPool();
 		final SimplexPluginConfig simplexPluginConfig =
 				context.mock(SimplexPluginConfig.class);
 		final DuplexPluginConfig duplexPluginConfig =
@@ -119,12 +116,10 @@ public class PluginManagerImplTest extends BriarTestCase {
 			// Stop the plugins
 			oneOf(simplexPlugin).stop();
 			oneOf(duplexPlugin).stop();
-			// Shut down the executor
-			oneOf(androidExecutor).shutdown();
 		}});
 		PluginManagerImpl p = new PluginManagerImpl(pluginExecutor,
-				androidExecutor, simplexPluginConfig, duplexPluginConfig, db,
-				poller, dispatcher, uiCallback);
+				simplexPluginConfig, duplexPluginConfig, db, poller,
+				dispatcher, uiCallback);
 		// Two plugins should be started and stopped
 		assertEquals(2, p.start());
 		assertEquals(2, p.stop());
-- 
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