| // $Id$ |
| // |
| // Licensed to the Apache Software Foundation (ASF) under one |
| // or more contributor license agreements. See the NOTICE file |
| // distributed with this work for additional information |
| // regarding copyright ownership. The ASF licenses this file |
| // to you 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. |
| // |
| using System; |
| |
| namespace Org.Apache.Etch.Bindings.Csharp.Util |
| { |
| /// <summary> |
| /// Classes wanting alarms must implement this interface to receive the |
| /// alarm. |
| /// </summary> |
| public interface AlarmListener |
| { |
| /// <summary> |
| /// Reports that the listener's alarm went off. |
| /// </summary> |
| /// |
| /// <param name="manager">the manager of the alarm.</param> |
| /// |
| /// <param name="state">a bit of state for the listener.</param> |
| /// |
| /// <param name="due">due the time the alarm was set to go off. This is in the |
| /// time coordinates as returned by Timer.GetNanos().</param> |
| /// |
| /// <returns> |
| /// the positive or negative snooze time in ms for this alarm, |
| /// or 0 to shutoff the alarm. If a positive number is returned, it is |
| /// added to the current due time of the alarm to calculate the new |
| /// due time for the alarm. Thus there should be very little drift |
| /// in the frequency of the alarms (although there is some because |
| /// of system clock jitter). |
| /// |
| /// If the system is very busy, or if the listeners are trying to |
| /// do too much, alarms may not be processed quickly enough and |
| /// calculated new due times will already be in the past. This is a |
| /// pathological condition which will spiral out of control if not |
| /// detected. |
| /// |
| /// If a negative number is returned, it is subtracted from the current |
| /// value of Timer.GetNanos() to calculate the new due time for the |
| /// alarm. (In this case, subtracting the negative number is the same |
| /// as adding the absolute value...) |
| /// </returns> |
| /// |
| /// <see cref="Timer.GetNanos()"/> |
| |
| |
| int Wakeup( AlarmManager manager, Object state, long due ); |
| } |
| } |