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/*
* Copyright (C) 2017 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License
*/
package com.android.systemui.shared.recents.model;
import java.util.concurrent.ConcurrentLinkedQueue;
/**
* A Task load queue
*/
class TaskResourceLoadQueue {
private final ConcurrentLinkedQueue<Task> mQueue = new ConcurrentLinkedQueue<>();
/** Adds a new task to the load queue */
void addTask(Task t) {
if (!mQueue.contains(t)) {
mQueue.add(t);
}
synchronized(this) {
notifyAll();
}
}
/**
* Retrieves the next task from the load queue, as well as whether we want that task to be
* force reloaded.
*/
Task nextTask() {
return mQueue.poll();
}
/** Removes a task from the load queue */
void removeTask(Task t) {
mQueue.remove(t);
}
/** Clears all the tasks from the load queue */
void clearTasks() {
mQueue.clear();
}
/** Returns whether the load queue is empty */
boolean isEmpty() {
return mQueue.isEmpty();
}
}
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