49 lines
1.8 KiB
Java
49 lines
1.8 KiB
Java
/*
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* Copyright 2020 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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* https://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.buffer.api.tests.examples;
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import io.netty.buffer.api.BufferAllocator;
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import io.netty.buffer.api.Buffer;
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import static java.lang.System.out;
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import static java.util.concurrent.CompletableFuture.completedFuture;
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public final class AsyncExample {
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public static void main(String[] args) throws Exception {
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try (BufferAllocator allocator = BufferAllocator.offHeapPooled();
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Buffer startBuf = allocator.allocate(16)) {
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startBuf.writeLong(threadId());
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completedFuture(startBuf.send()).thenApplyAsync(send -> {
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try (Buffer buf = send.receive()) {
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buf.writeLong(threadId());
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return buf.send();
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}
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}).thenAcceptAsync(send -> {
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try (Buffer buf = send.receive()) {
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out.println("First thread id was " + buf.readLong());
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out.println("Then sent to " + buf.readLong());
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out.println("And now in thread " + threadId());
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}
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}).get();
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}
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}
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private static long threadId() {
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return Thread.currentThread().getId();
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}
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}
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