netty5/transport/src/main/java/io/netty/channel/IoExecutionContext.java

40 lines
1.3 KiB
Java

/*
* Copyright 2018 The Netty Project
*
* The Netty Project 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.
*/
package io.netty.channel;
/**
* The execution context for an {@link IoHandler}.
* All method must be called from the {@link EventLoop} thread.
*/
public interface IoExecutionContext {
/**
* Returns {@code true} if blocking for IO is allowed or if we should try to do a non-blocking request for IO to be
* ready.
*/
boolean canBlock();
/**
* Returns the amount of time left until the scheduled task with the closest dead line should run..
*/
long delayNanos(long currentTimeNanos);
/**
* Returns the absolute point in time (relative to {@link SingleThreadEventLoop#nanoTime()}) at which the the next
* closest scheduled task should run.
*/
long deadlineNanos();
}