| /* |
| * Copyright (c) 2013, 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. |
| * |
| * 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. |
| */ |
| |
| /* |
| * @test HeapChangeLogging.java |
| * @bug 8027440 |
| * @library /test/lib |
| * @modules java.base/jdk.internal.misc |
| * java.management |
| * @summary Allocate to get a promotion failure and verify that that heap change logging is present. |
| * @run main HeapChangeLogging |
| */ |
| |
| import java.util.regex.Matcher; |
| import java.util.regex.Pattern; |
| |
| import jdk.test.lib.process.ProcessTools; |
| import jdk.test.lib.process.OutputAnalyzer; |
| |
| public class HeapChangeLogging { |
| public static void main(String[] args) throws Exception { |
| ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-Xmx128m", "-Xmn100m", "-XX:+UseSerialGC", "-Xlog:gc", "HeapFiller"); |
| OutputAnalyzer output = new OutputAnalyzer(pb.start()); |
| String stdout = output.getStdout(); |
| System.out.println(stdout); |
| Matcher stdoutMatcher = Pattern.compile(".*\\(Allocation Failure\\) [0-9]+[KMG]->[0-9]+[KMG]\\([0-9]+[KMG]\\)", Pattern.MULTILINE).matcher(stdout); |
| if (!stdoutMatcher.find()) { |
| throw new RuntimeException("No proper GC log line found"); |
| } |
| output.shouldHaveExitValue(0); |
| } |
| } |
| |
| class HeapFiller { |
| public static Entry root; |
| private static final int PAYLOAD_SIZE = 1000; |
| |
| public static void main(String[] args) { |
| root = new Entry(PAYLOAD_SIZE, null); |
| Entry current = root; |
| try { |
| while (true) { |
| Entry newEntry = new Entry(PAYLOAD_SIZE, current); |
| current = newEntry; |
| } |
| } catch (OutOfMemoryError e) { |
| root = null; |
| } |
| |
| } |
| } |
| |
| class Entry { |
| public Entry previous; |
| public byte[] payload; |
| |
| Entry(int payloadSize, Entry previous) { |
| payload = new byte[payloadSize]; |
| this.previous = previous; |
| } |
| } |