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ExecutorUtils lets use schedule a runnable chain.

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Bug 19625976.

Change-Id: Iebbef7fed57a381498301dcf26fefa27d06802f7
This commit is contained in:
Dan Zivkovic 2015-03-09 14:48:51 -07:00
parent f9e2d271ca
commit bd1bc4067f
2 changed files with 44 additions and 34 deletions
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4
java/src/com/android/inputmethod/latin/ContactsContentObserver.java
View file

@ -56,8 +56,8 @@ public class ContactsContentObserver implements Runnable {
mContentObserver = new ContentObserver(null /* handler */) {
@Override
public void onChange(boolean self) {
ExecutorUtils.getBackgroundExecutor()
.execute(ContactsContentObserver.this);
// TODO(zivkovic): Schedule a separate task to reset the decoder.
ExecutorUtils.getBackgroundExecutor().execute(ContactsContentObserver.this);
}
};
final ContentResolver contentResolver = mContext.getContentResolver();

74
java/src/com/android/inputmethod/latin/utils/ExecutorUtils.java
View file

@ -23,7 +23,9 @@ import com.android.inputmethod.annotations.UsedForTesting;
import java.lang.Thread.UncaughtExceptionHandler;
import java.util.concurrent.Executors;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.ScheduledFuture;
import java.util.concurrent.ThreadFactory;
import java.util.concurrent.TimeUnit;
/**
* Utilities to manage executors.
@ -35,33 +37,6 @@ public class ExecutorUtils {
private static final ScheduledExecutorService sExecutorService =
Executors.newSingleThreadScheduledExecutor(new ExecutorFactory());
@UsedForTesting
private static ScheduledExecutorService sExecutorServiceForTests;
@UsedForTesting
public static void setExecutorServiceForTests(
final ScheduledExecutorService executorServiceForTests) {
sExecutorServiceForTests = executorServiceForTests;
}
/**
* @return scheduled executor service used to run background tasks
*/
public static ScheduledExecutorService getBackgroundExecutor() {
if (sExecutorServiceForTests != null) {
return sExecutorServiceForTests;
}
return sExecutorService;
}
/**
* Shutdowns all executors and removes all executors from the executor map for testing.
*/
@UsedForTesting
public static void shutdownAllExecutors() {
sExecutorService.execute(new ExecutorShutdown(sExecutorService));
}
private static class ExecutorFactory implements ThreadFactory {
@Override
public Thread newThread(final Runnable runnable) {
@ -76,16 +51,51 @@ public class ExecutorUtils {
}
}
private static class ExecutorShutdown implements Runnable {
private final ScheduledExecutorService mExecutor;
@UsedForTesting
private static ScheduledExecutorService sExecutorServiceForTests;
public ExecutorShutdown(final ScheduledExecutorService executor) {
mExecutor = executor;
@UsedForTesting
public static void setExecutorServiceForTests(
final ScheduledExecutorService executorServiceForTests) {
sExecutorServiceForTests = executorServiceForTests;
}
//
// Public methods used to schedule a runnable for execution.
//
/**
* @return scheduled executor service used to run background tasks
*/
public static ScheduledExecutorService getBackgroundExecutor() {
if (sExecutorServiceForTests != null) {
return sExecutorServiceForTests;
}
return sExecutorService;
}
public static Runnable chain(final Runnable... runnables) {
return new RunnableChain(runnables);
}
private static class RunnableChain implements Runnable {
private final Runnable[] mRunnables;
private RunnableChain(final Runnable... runnables) {
if (runnables == null || runnables.length == 0) {
throw new IllegalArgumentException("Attempting to construct an empty chain");
}
mRunnables = runnables;
}
@Override
public void run() {
mExecutor.shutdown();
for (Runnable runnable : mRunnables) {
if (Thread.interrupted()) {
return;
}
runnable.run();
}
}
}
}