1 /* 2 * Copyright (C) 2024 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.server.connectivity.mdns; 18 19 import android.os.Message; 20 21 import androidx.annotation.NonNull; 22 23 /** 24 * The interface for scheduler. 25 */ 26 public interface Scheduler { 27 /** 28 * Set a message to be sent after a specified delay. 29 */ sendDelayedMessage(@onNull Message message, long delayMs)30 boolean sendDelayedMessage(@NonNull Message message, long delayMs); 31 32 /** 33 * Remove a scheduled message. 34 */ removeDelayedMessage(int what)35 void removeDelayedMessage(int what); 36 37 /** 38 * Check if there is a scheduled message. 39 */ hasDelayedMessage(int what)40 boolean hasDelayedMessage(int what); 41 42 /** 43 * Set a runnable to be executed after a specified delay. 44 */ postDelayed(@onNull Runnable runnable, long delayMs)45 boolean postDelayed(@NonNull Runnable runnable, long delayMs); 46 47 /** 48 * Close this object. 49 */ close()50 void close(); 51 } 52