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Code Issues Projects Releases Wiki Activity

Simplified AndroidExecutor API.

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This commit is contained in:
akwizgran
2012-11-06 13:48:26 +00:00
parent 42383001f1
commit 91f4967124
3 changed files with 15 additions and 26 deletions
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21
src/net/sf/briar/android/AndroidExecutorImpl.java
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@@ -2,6 +2,7 @@ package net.sf.briar.android;
import java.util.concurrent.Callable; import java.util.concurrent.Callable;
import java.util.concurrent.CountDownLatch; import java.util.concurrent.CountDownLatch;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.Future; import java.util.concurrent.Future;
import java.util.concurrent.FutureTask; import java.util.concurrent.FutureTask;
import java.util.concurrent.atomic.AtomicBoolean; import java.util.concurrent.atomic.AtomicBoolean;
@@ -15,7 +16,7 @@ import com.google.inject.Inject;
class AndroidExecutorImpl implements AndroidExecutor { class AndroidExecutorImpl implements AndroidExecutor {
private static final int SHUTDOWN = 0, RUNNABLE = 1, CALLABLE = 2; private static final int SHUTDOWN = 0, RUN = 1;
private final Runnable loop; private final Runnable loop;
private final AtomicBoolean started = new AtomicBoolean(false); private final AtomicBoolean started = new AtomicBoolean(false);
@@ -45,20 +46,13 @@ class AndroidExecutorImpl implements AndroidExecutor {
} }
} }
public Future<Void> submit(Runnable r) { public <V> V run(Callable<V> c) throws InterruptedException,
startIfNecessary(); ExecutionException {
Future<Void> f = new FutureTask<Void>(r, null);
Message m = Message.obtain(handler, RUNNABLE, f);
handler.sendMessage(m);
return f;
}
public <V> Future<V> submit(Callable<V> c) {
startIfNecessary(); startIfNecessary();
Future<V> f = new FutureTask<V>(c); Future<V> f = new FutureTask<V>(c);
Message m = Message.obtain(handler, RUNNABLE, f); Message m = Message.obtain(handler, RUN, f);
handler.sendMessage(m); handler.sendMessage(m);
return f; return f.get();
} }
public void shutdown() { public void shutdown() {
@@ -76,8 +70,7 @@ class AndroidExecutorImpl implements AndroidExecutor {
case SHUTDOWN: case SHUTDOWN:
Looper.myLooper().quit(); Looper.myLooper().quit();
break; break;
case RUNNABLE: case RUN:
case CALLABLE:
((FutureTask<?>) m.obj).run(); ((FutureTask<?>) m.obj).run();
break; break;
default: default:

7
src/net/sf/briar/api/android/AndroidExecutor.java
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@@ -1,7 +1,7 @@
package net.sf.briar.api.android; package net.sf.briar.api.android;
import java.util.concurrent.Callable; import java.util.concurrent.Callable;
import java.util.concurrent.Future; import java.util.concurrent.ExecutionException;
/** /**
* Enables background threads to make Android API calls that must be made from * Enables background threads to make Android API calls that must be made from
@@ -9,9 +9,8 @@ import java.util.concurrent.Future;
*/ */
public interface AndroidExecutor { public interface AndroidExecutor {
Future<Void> submit(Runnable r); /** Runs the given task on a thread with a message queue. */
<V> V run(Callable<V> c) throws InterruptedException, ExecutionException;
<V> Future<V> submit(Callable<V> c);
void shutdown(); void shutdown();
} }

13
src/net/sf/briar/plugins/droidtooth/DroidtoothPlugin.java
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@@ -23,7 +23,6 @@ import java.util.concurrent.Callable;
import java.util.concurrent.CountDownLatch; import java.util.concurrent.CountDownLatch;
import java.util.concurrent.ExecutionException; import java.util.concurrent.ExecutionException;
import java.util.concurrent.Executor; import java.util.concurrent.Executor;
import java.util.concurrent.Future;
import java.util.logging.Logger; import java.util.logging.Logger;
import net.sf.briar.api.ContactId; import net.sf.briar.api.ContactId;
@@ -89,14 +88,12 @@ class DroidtoothPlugin implements DuplexPlugin {
public void start() throws IOException { public void start() throws IOException {
// BluetoothAdapter.getDefaultAdapter() must be called on a thread // BluetoothAdapter.getDefaultAdapter() must be called on a thread
// with a message queue, so submit it to the AndroidExecutor // with a message queue, so submit it to the AndroidExecutor
Callable<BluetoothAdapter> c = new Callable<BluetoothAdapter>() {
public BluetoothAdapter call() throws Exception {
return BluetoothAdapter.getDefaultAdapter();
}
};
Future<BluetoothAdapter> f = androidExecutor.submit(c);
try { try {
adapter = f.get(); adapter = androidExecutor.run(new Callable<BluetoothAdapter>() {
public BluetoothAdapter call() throws Exception {
return BluetoothAdapter.getDefaultAdapter();
}
});
} catch(InterruptedException e) { } catch(InterruptedException e) {
throw new IOException(e.toString()); throw new IOException(e.toString());
} catch(ExecutionException e) { } catch(ExecutionException e) {