1 /* 2 * Copyright (c) 2015, 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 TestPrintReferences 26 * @bug 8136991 27 * @summary Validate the reference processing logging 28 * @key gc 29 * @library /testlibrary 30 * @modules java.base/sun.misc 31 * java.management 32 */ 33 34 import jdk.test.lib.ProcessTools; 35 import jdk.test.lib.OutputAnalyzer; 36 37 public class TestPrintReferences { 38 public static void main(String[] args) throws Exception { 39 ProcessBuilder pb_enabled = 40 ProcessTools.createJavaProcessBuilder("-XX:+PrintGCDetails", "-XX:+PrintReferenceGC", "-Xmx10M", GCTest.class.getName()); 41 OutputAnalyzer output = new OutputAnalyzer(pb_enabled.start()); 42 43 String countRegex = "[0-9]+ refs"; 44 String timeRegex = "[0-9]+[.,][0-9]+ secs"; 45 46 output.shouldMatch( 47 "#[0-9]+: \\[SoftReference, " + countRegex + ", " + timeRegex + "\\]" + 48 "#[0-9]+: \\[WeakReference, " + countRegex + ", " + timeRegex + "\\]" + 49 "#[0-9]+: \\[FinalReference, " + countRegex + ", " + timeRegex + "\\]" + 50 "#[0-9]+: \\[PhantomReference, " + countRegex + ", " + timeRegex + "\\]" + 51 "#[0-9]+: \\[JNI Weak Reference, (" + countRegex + ", )?" + timeRegex + "\\]"); 52 53 output.shouldHaveExitValue(0); 54 } 55 56 static class GCTest { 57 public static void main(String [] args) { 58 System.gc(); 59 } 60 } 61 }