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Ensuring that unbind calls are not queued in the worker thread and executed subsequently on the main thread. (Bug 7001531)

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Change-Id: I677242c0952d6385ca229ba300fdd5a2a7908a8a
This commit is contained in:
Winson Chung
2012-08-27 15:34:29 -07:00
parent 2b3396f9c0
commit 81b5225279
3 changed files with 66 additions and 37 deletions
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42
src/com/android/launcher2/DeferredHandler.java
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@@ -16,12 +16,13 @@
package com.android.launcher2;
import java.util.LinkedList;
import android.os.Handler;
import android.os.Looper;
import android.os.Message;
import android.os.MessageQueue;
import android.util.Pair;
import java.util.LinkedList;
import java.util.ListIterator;
/**
* Queue of things to run on a looper thread. Items posted with {@link #post} will not
@@ -31,18 +32,20 @@ import android.os.MessageQueue;
* This class is fifo.
*/
public class DeferredHandler {
private LinkedList<Runnable> mQueue = new LinkedList<Runnable>();
private LinkedList<Pair<Runnable, Integer>> mQueue = new LinkedList<Pair<Runnable, Integer>>();
private MessageQueue mMessageQueue = Looper.myQueue();
private Impl mHandler = new Impl();
private class Impl extends Handler implements MessageQueue.IdleHandler {
public void handleMessage(Message msg) {
Pair<Runnable, Integer> p;
Runnable r;
synchronized (mQueue) {
if (mQueue.size() == 0) {
return;
}
r = mQueue.removeFirst();
p = mQueue.removeFirst();
r = p.first;
}
r.run();
synchronized (mQueue) {
@@ -73,8 +76,11 @@ public class DeferredHandler {
/** Schedule runnable to run after everything that's on the queue right now. */
public void post(Runnable runnable) {
post(runnable, 0);
}
public void post(Runnable runnable, int type) {
synchronized (mQueue) {
mQueue.add(runnable);
mQueue.add(new Pair<Runnable, Integer>(runnable, type));
if (mQueue.size() == 1) {
scheduleNextLocked();
}
@@ -83,7 +89,10 @@ public class DeferredHandler {
/** Schedule runnable to run when the queue goes idle. */
public void postIdle(final Runnable runnable) {
post(new IdleRunnable(runnable));
postIdle(runnable, 0);
}
public void postIdle(final Runnable runnable, int type) {
post(new IdleRunnable(runnable), type);
}
public void cancelRunnable(Runnable runnable) {
@@ -91,6 +100,18 @@ public class DeferredHandler {
while (mQueue.remove(runnable)) { }
}
}
public void cancelAllRunnablesOfType(int type) {
synchronized (mQueue) {
ListIterator<Pair<Runnable, Integer>> iter = mQueue.listIterator();
Pair<Runnable, Integer> p;
while (iter.hasNext()) {
p = iter.next();
if (p.second == type) {
iter.remove();
}
}
}
}
public void cancel() {
synchronized (mQueue) {
@@ -100,19 +121,20 @@ public class DeferredHandler {
/** Runs all queued Runnables from the calling thread. */
public void flush() {
LinkedList<Runnable> queue = new LinkedList<Runnable>();
LinkedList<Pair<Runnable, Integer>> queue = new LinkedList<Pair<Runnable, Integer>>();
synchronized (mQueue) {
queue.addAll(mQueue);
mQueue.clear();
}
for (Runnable r : queue) {
r.run();
for (Pair<Runnable, Integer> p : queue) {
p.first.run();
}
}
void scheduleNextLocked() {
if (mQueue.size() > 0) {
Runnable peek = mQueue.getFirst();
Pair<Runnable, Integer> p = mQueue.getFirst();
Runnable peek = p.first;
if (peek instanceof IdleRunnable) {
mMessageQueue.addIdleHandler(mHandler);
} else {