| /* |
| * Copyright (c) 2015, 2017, 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. |
| * |
| * 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 |
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| */ |
| |
| /* |
| * @test TestPrintReferences |
| * @bug 8136991 8186402 |
| * @summary Validate the reference processing logging |
| * @key gc |
| * @library /test/lib |
| * @modules java.base/jdk.internal.misc |
| * java.management |
| */ |
| |
| import java.lang.ref.SoftReference; |
| import java.util.ArrayList; |
| |
| import jdk.test.lib.process.OutputAnalyzer; |
| import jdk.test.lib.process.ProcessTools; |
| |
| public class TestPrintReferences { |
| public static void main(String[] args) throws Exception { |
| ProcessBuilder pb_enabled = ProcessTools.createJavaProcessBuilder("-Xlog:gc+phases+ref=debug", |
| "-XX:+UseG1GC", |
| "-Xmx10M", |
| // Explicit thread setting is required to avoid using only 1 thread |
| "-XX:ParallelGCThreads=2", |
| GCTest.class.getName()); |
| OutputAnalyzer output = new OutputAnalyzer(pb_enabled.start()); |
| |
| String indent_4 = " "; |
| String indent_6 = " "; |
| String indent_8 = " "; |
| String gcLogTimeRegex = ".* GC\\([0-9]+\\) "; |
| String countRegex = "[0-9]+"; |
| String timeRegex = "[0-9]+[.,][0-9]+ms"; |
| String totalRegex = gcLogTimeRegex + indent_4 + "Reference Processing: " + timeRegex + "\n"; |
| String balanceRegex = gcLogTimeRegex + indent_8 + "Balance queues: " + timeRegex + "\n"; |
| String softRefRegex = gcLogTimeRegex + indent_6 + "SoftReference: " + timeRegex + "\n"; |
| String weakRefRegex = gcLogTimeRegex + indent_6 + "WeakReference: " + timeRegex + "\n"; |
| String finalRefRegex = gcLogTimeRegex + indent_6 + "FinalReference: " + timeRegex + "\n"; |
| String phantomRefRegex = gcLogTimeRegex + indent_6 + "PhantomReference: " + timeRegex + "\n"; |
| String refDetailRegex = gcLogTimeRegex + indent_8 + "Phase2: " + timeRegex + "\n" + |
| gcLogTimeRegex + indent_8 + "Phase3: " + timeRegex + "\n" + |
| gcLogTimeRegex + indent_8 + "Discovered: " + countRegex + "\n" + |
| gcLogTimeRegex + indent_8 + "Cleared: " + countRegex + "\n"; |
| String softRefDetailRegex = gcLogTimeRegex + indent_8 + "Phase1: " + timeRegex + "\n" + refDetailRegex; |
| String enqueueRegex = gcLogTimeRegex + indent_4 + "Reference Enqueuing: " + timeRegex + "\n"; |
| String enqueueDetailRegex = gcLogTimeRegex + indent_6 + "Reference Counts: Soft: " + countRegex + |
| " Weak: " + countRegex + " Final: " + countRegex + " Phantom: " + countRegex + "\n"; |
| |
| output.shouldMatch(/* Total Reference processing time */ |
| totalRegex + |
| /* SoftReference processing */ |
| softRefRegex + balanceRegex + softRefDetailRegex + |
| /* WeakReference processing */ |
| weakRefRegex + balanceRegex + refDetailRegex + |
| /* FinalReference processing */ |
| finalRefRegex + balanceRegex + refDetailRegex + |
| /* PhantomReference processing */ |
| phantomRefRegex + balanceRegex + refDetailRegex + |
| /* Total Enqueuing time */ |
| enqueueRegex + |
| /* Enqueued Stats */ |
| enqueueDetailRegex |
| ); |
| |
| output.shouldHaveExitValue(0); |
| } |
| |
| static class GCTest { |
| static final int M = 1024 * 1024; |
| |
| public static void main(String [] args) { |
| |
| ArrayList arrSoftRefs = new ArrayList(); |
| |
| // Populate to triger GC and then Reference related logs will be printed. |
| for (int i = 0; i < 10; i++) { |
| byte[] tmp = new byte[M]; |
| |
| arrSoftRefs.add(new SoftReference(tmp)); |
| } |
| } |
| } |
| } |