73 lines
2.7 KiB
Java
73 lines
2.7 KiB
Java
/*
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* Copyright (c) 2014, 2022, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package javacserver.server;
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import java.util.concurrent.ExecutorService;
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import java.util.concurrent.Executors;
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import java.util.concurrent.TimeUnit;
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import javacserver.util.Log;
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/**
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* Use a fixed thread pool to limit the amount of concurrent javac compilation
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* that can happen.
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*/
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public class CompilerThreadPool {
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private static final int POOLSIZE = Runtime.getRuntime().availableProcessors();
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private final ExecutorService pool;
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public CompilerThreadPool() {
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this.pool = Executors.newFixedThreadPool(POOLSIZE);
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}
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public void execute(Runnable runnable) {
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this.pool.execute(runnable);
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}
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public void shutdown() {
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Log.debug("Shutting down javacserver thread pool");
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pool.shutdown(); // Disable new tasks from being submitted
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try {
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// Wait a while for existing tasks to terminate
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if (!pool.awaitTermination(60, TimeUnit.SECONDS)) {
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pool.shutdownNow(); // Cancel currently executing tasks
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// Wait a while for tasks to respond to being cancelled
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if (!pool.awaitTermination(60, TimeUnit.SECONDS))
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Log.error("Thread pool did not terminate");
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}
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} catch (InterruptedException ie) {
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// (Re-)Cancel if current thread also interrupted
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pool.shutdownNow();
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// Preserve interrupt status
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Thread.currentThread().interrupt();
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}
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}
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public int poolSize() {
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return POOLSIZE;
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}
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}
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