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Merge "Apply "most-recent" delivery policy to DREAMING related broadcasts."

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This commit is contained in:
Sudheer Shanka
2022-12-15 21:53:23 +00:00
committed by Android (Google) Code Review
parent f92396c580 b69e04e8b7
commit d70ac512e9
1 changed files with 32 additions and 2 deletions
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34
services/core/java/com/android/server/dreams/DreamController.java
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@@ -19,6 +19,7 @@ package com.android.server.dreams;
import static android.app.WindowConfiguration.ACTIVITY_TYPE_DREAM;
import android.app.ActivityTaskManager;
import android.app.BroadcastOptions;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
@@ -45,6 +46,7 @@ import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.NoSuchElementException;
import java.util.UUID;
/**
* Internal controller for starting and stopping the current dream and managing related state.
@@ -69,6 +71,9 @@ final class DreamController {
.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY);
private final Intent mDreamingStoppedIntent = new Intent(Intent.ACTION_DREAMING_STOPPED)
.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY);
private static final String DREAMING_DELIVERY_GROUP_NAMESPACE = UUID.randomUUID().toString();
private static final String DREAMING_DELIVERY_GROUP_KEY = UUID.randomUUID().toString();
private final Bundle mDreamingStartedStoppedOptions = createDreamingStartedStoppedOptions();
private final Intent mCloseNotificationShadeIntent;
@@ -93,6 +98,29 @@ final class DreamController {
mCloseNotificationShadeIntent.putExtra("reason", "dream");
}
/**
* Create the {@link BroadcastOptions} bundle that will be used with sending the
* {@link Intent#ACTION_DREAMING_STARTED} and {@link Intent#ACTION_DREAMING_STOPPED}
* broadcasts.
*/
private Bundle createDreamingStartedStoppedOptions() {
final BroadcastOptions options = BroadcastOptions.makeBasic();
// This allows the broadcasting system to discard any older broadcasts
// waiting to be delivered to a process.
options.setDeliveryGroupPolicy(BroadcastOptions.DELIVERY_GROUP_POLICY_MOST_RECENT);
// Set namespace and key to identify which older broadcasts can be discarded.
// We could use any strings here with the following requirements:
// - namespace needs to be unlikely to be reused with in
// the system_server process, as that could result in potentially discarding some
// non-dreaming_started/stopped related broadcast.
// - key needs to be the same for both DREAMING_STARTED and DREAMING_STOPPED broadcasts
// so that dreaming_stopped can also clear any older dreaming_started broadcasts that
// are yet to be delivered.
options.setDeliveryGroupMatchingKey(
DREAMING_DELIVERY_GROUP_NAMESPACE, DREAMING_DELIVERY_GROUP_KEY);
return options.toBundle();
}
public void dump(PrintWriter pw) {
pw.println("Dreamland:");
if (mCurrentDream != null) {
@@ -244,7 +272,8 @@ final class DreamController {
mCurrentDream = null;
if (mSentStartBroadcast) {
mContext.sendBroadcastAsUser(mDreamingStoppedIntent, UserHandle.ALL);
mContext.sendBroadcastAsUser(mDreamingStoppedIntent, UserHandle.ALL,
null /* receiverPermission */, mDreamingStartedStoppedOptions);
mSentStartBroadcast = false;
}
@@ -287,7 +316,8 @@ final class DreamController {
mCurrentDream.mService = service;
if (!mCurrentDream.mIsPreviewMode && !mSentStartBroadcast) {
mContext.sendBroadcastAsUser(mDreamingStartedIntent, UserHandle.ALL);
mContext.sendBroadcastAsUser(mDreamingStartedIntent, UserHandle.ALL,
null /* receiverPermission */, mDreamingStartedStoppedOptions);
mSentStartBroadcast = true;
}
}