| /* |
| * Copyright (c) 2014, 2016, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package com.sun.tools.sjavac.comp; |
| |
| import com.sun.tools.javac.main.Main.Result; |
| import com.sun.tools.sjavac.Log; |
| import com.sun.tools.sjavac.server.Sjavac; |
| |
| import java.util.Objects; |
| import java.util.concurrent.ExecutorService; |
| import java.util.concurrent.Executors; |
| import java.util.concurrent.TimeUnit; |
| |
| /** |
| * An sjavac implementation that limits the number of concurrent calls by |
| * wrapping invocations in Callables and delegating them to a FixedThreadPool. |
| * |
| * <p><b>This is NOT part of any supported API. |
| * If you write code that depends on this, you do so at your own risk. |
| * This code and its internal interfaces are subject to change or |
| * deletion without notice.</b> |
| */ |
| public class PooledSjavac implements Sjavac { |
| |
| final Sjavac delegate; |
| final ExecutorService pool; |
| |
| public PooledSjavac(Sjavac delegate, int poolsize) { |
| Objects.requireNonNull(delegate); |
| this.delegate = delegate; |
| pool = Executors.newFixedThreadPool(poolsize); |
| } |
| |
| @Override |
| public Result compile(String[] args) { |
| Log log = Log.get(); |
| try { |
| return pool.submit(() -> { |
| Log.setLogForCurrentThread(log); |
| return delegate.compile(args); |
| }).get(); |
| } catch (Exception e) { |
| e.printStackTrace(); |
| throw new RuntimeException("Error during compile", e); |
| } |
| } |
| |
| @Override |
| public void shutdown() { |
| Log.debug("Shutting down PooledSjavac"); |
| pool.shutdown(); // Disable new tasks from being submitted |
| try { |
| // Wait a while for existing tasks to terminate |
| if (!pool.awaitTermination(60, TimeUnit.SECONDS)) { |
| pool.shutdownNow(); // Cancel currently executing tasks |
| // Wait a while for tasks to respond to being cancelled |
| if (!pool.awaitTermination(60, TimeUnit.SECONDS)) |
| Log.error("ThreadPool did not terminate"); |
| } |
| } catch (InterruptedException ie) { |
| // (Re-)Cancel if current thread also interrupted |
| pool.shutdownNow(); |
| // Preserve interrupt status |
| Thread.currentThread().interrupt(); |
| } |
| |
| delegate.shutdown(); |
| } |
| |
| } |