49 lines
1.7 KiB
Java
49 lines
1.7 KiB
Java
/*
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* Copyright 2012 The Netty Project
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*
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* The Netty Project licenses this file to you under the Apache License,
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* version 2.0 (the "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*/
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package io.netty.util;
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import java.util.Set;
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import java.util.concurrent.RejectedExecutionException;
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import java.util.concurrent.TimeUnit;
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/**
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* Schedules {@link TimerTask}s for one-time future execution in a background
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* thread.
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*/
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public interface Timer {
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/**
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* Schedules the specified {@link TimerTask} for one-time execution after
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* the specified delay.
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*
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* @return a handle which is associated with the specified task
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*
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* @throws IllegalStateException if this timer has been {@linkplain #stop() stopped} already
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* @throws RejectedExecutionException if the pending timeouts are too many and creating new timeout
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* can cause instability in the system.
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*/
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Timeout newTimeout(TimerTask task, long delay, TimeUnit unit);
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/**
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* Releases all resources acquired by this {@link Timer} and cancels all
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* tasks which were scheduled but not executed yet.
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*
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* @return the handles associated with the tasks which were canceled by
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* this method
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*/
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Set<Timeout> stop();
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}
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