96 lines
3.4 KiB
Java
96 lines
3.4 KiB
Java
/*
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* Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* @test TestPrintClassHistogram
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* @bug 8010294
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* @summary Checks that a class histogram can be printed both before and after
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* a GC
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* @library /testlibrary
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* @run main/othervm TestPrintClassHistogram launch BeforeGC
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* @run main/othervm TestPrintClassHistogram launch AfterGC
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* @run main/othervm TestPrintClassHistogram launch BeforeGC AfterGC
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*/
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import java.util.List;
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import java.util.ArrayList;
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import java.util.Arrays;
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import com.oracle.java.testlibrary.OutputAnalyzer;
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import com.oracle.java.testlibrary.ProcessTools;
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/* This test uses a "trick" to be able to analyze the output of the test:
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*
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* The test starts a java process that runs the same code, but the first
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* argument is different ("run" instead of "launch"). The change of flags
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* will run the test code instead of launching the test again.
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*/
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public class TestPrintClassHistogram {
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public static void main(String[] args) throws Exception {
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if (shouldLaunchTest(args)) {
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launchTest(args);
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return;
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}
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// This is the actual test code
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System.gc();
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}
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private static boolean shouldLaunchTest(String[] cmdlineArguments) {
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return cmdlineArguments[0].equals("launch");
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}
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private static void launchTest(String[] args) throws Exception {
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String[] testArgs = createTestArguments(args);
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ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(testArgs);
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OutputAnalyzer output = new OutputAnalyzer(pb.start());
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output.shouldNotContain("WARNING");
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// There will always be at least one java.lang.Class instance
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output.shouldContain("java.lang.Class");
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// There will always be at least one java.lang.String instance
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output.shouldContain("java.lang.String");
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output.shouldHaveExitValue(0);
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}
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private static String[] createTestArguments(String[] cmdlineArguments) {
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List<String> cmdlineArgs = Arrays.asList(cmdlineArguments);
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List<String> testArgs = new ArrayList<String>();
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if (cmdlineArgs.contains("BeforeGC")) {
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testArgs.add("-XX:+PrintClassHistogramBeforeFullGC");
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}
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if (cmdlineArgs.contains("AfterGC")) {
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testArgs.add("-XX:+PrintClassHistogramAfterFullGC");
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}
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testArgs.add("TestPrintClassHistogram");
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testArgs.add("run");
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return testArgs.toArray(new String[testArgs.size()]);
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}
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}
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