IdleShutdown.java revision 3356:b99518745035
1/* 2 * Copyright (c) 2014, 2016, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24/* 25 * @test 26 * @bug 8044131 27 * @summary Tests the hooks used for detecting idleness of the sjavac server. 28 * @modules jdk.compiler/com.sun.tools.sjavac.server 29 * @build Wrapper 30 * @run main Wrapper IdleShutdown 31 */ 32import java.util.concurrent.atomic.AtomicLong; 33 34import com.sun.tools.javac.main.Main.Result; 35import com.sun.tools.sjavac.server.IdleResetSjavac; 36import com.sun.tools.sjavac.server.Sjavac; 37import com.sun.tools.sjavac.server.Terminable; 38 39 40public class IdleShutdown { 41 42 final static long TEST_START = System.currentTimeMillis(); 43 final static long TIMEOUT_MS = 3000; 44 45 public static void main(String[] args) throws InterruptedException { 46 47 final AtomicLong timeoutTimestamp = new AtomicLong(-1); 48 49 log("Starting IdleCallbackJavacService with timeout: " + TIMEOUT_MS); 50 Sjavac service = new IdleResetSjavac( 51 new NoopJavacService(), 52 new Terminable() { 53 public void shutdown(String msg) { 54 // Record the idle timeout time 55 log("Timeout detected"); 56 timeoutTimestamp.set(System.currentTimeMillis()); 57 } 58 }, 59 TIMEOUT_MS); 60 61 // Make sure it didn't timeout immediately 62 if (timeoutTimestamp.get() != -1) 63 throw new AssertionError("Premature timeout detected."); 64 65 // Use Sjavac object and wait less than TIMEOUT_MS in between calls 66 Thread.sleep(TIMEOUT_MS - 1000); 67 log("Compiling"); 68 service.compile(new String[0]); 69 70 Thread.sleep(TIMEOUT_MS - 1000); 71 log("Compiling"); 72 service.compile(new String[0]); 73 74 if (timeoutTimestamp.get() != -1) 75 throw new AssertionError("Premature timeout detected."); 76 77 long expectedTimeout = System.currentTimeMillis() + TIMEOUT_MS; 78 79 // Wait for actual timeout 80 log("Awaiting idle timeout"); 81 Thread.sleep(TIMEOUT_MS + 1000); 82 83 // Check result 84 if (timeoutTimestamp.get() == -1) 85 throw new AssertionError("Timeout never occurred"); 86 87 long error = Math.abs(expectedTimeout - timeoutTimestamp.get()); 88 log("Timeout error: " + error + " ms"); 89 if (error > TIMEOUT_MS * .1) 90 throw new AssertionError("Error too big"); 91 92 log("Shutting down"); 93 service.shutdown(); 94 } 95 96 private static void log(String msg) { 97 long logTime = System.currentTimeMillis() - TEST_START; 98 System.out.printf("After %5d ms: %s%n", logTime, msg); 99 } 100 101 private static class NoopJavacService implements Sjavac { 102 @Override 103 public void shutdown() { 104 } 105 @Override 106 public Result compile(String[] args) { 107 // Attempt to trigger idle timeout during a call by sleeping 108 try { 109 Thread.sleep(TIMEOUT_MS + 1000); 110 } catch (InterruptedException e) { 111 } 112 return Result.OK; 113 } 114 } 115} 116