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/*
* Copyright (C) 2020 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.util.concurrency;
import android.os.Handler;
import android.os.Looper;
import java.util.concurrent.Executor;
/**
* Factory for building Executors running on a unique named thread.
*
* Use this when our generally available @Main, @Background, @UiBackground, @LongRunning, or
* similar global qualifiers don't quite cut it. Note that the methods here can create entirely new
* threads; there are no singletons here. Use responsibly.
*/
public interface ThreadFactory {
/**
* Returns a {@link Looper} running on a named thread.
*
* The thread is implicitly started and may be left running indefinitely, depending on the
* implementation. Assume this is the case and use responsibly.
*/
Looper buildLooperOnNewThread(String threadName);
/**
* Returns a {@link Handler} running on a named thread.
*
* The thread is implicitly started and may be left running indefinitely, depending on the
* implementation. Assume this is the case and use responsibly.
*/
Handler buildHandlerOnNewThread(String threadName);
/**
* Return an {@link java.util.concurrent.Executor} running on a named thread.
*
* The thread is implicitly started and may be left running indefinitely, depending on the
* implementation. Assume this is the case and use responsibly.
**/
Executor buildExecutorOnNewThread(String threadName);
/**
* Return an {@link DelayableExecutor} running on a named thread.
*
* The thread is implicitly started and may be left running indefinitely, depending on the
* implementation. Assume this is the case and use responsibly.
**/
DelayableExecutor buildDelayableExecutorOnNewThread(String threadName);
/**
* Return an {@link DelayableExecutor} running on the given HandlerThread.
**/
DelayableExecutor buildDelayableExecutorOnHandler(Handler handler);
/**
* Return an {@link DelayableExecutor} running the given Looper
**/
DelayableExecutor buildDelayableExecutorOnLooper(Looper looper);
}
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