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/*
* Copyright (c) 2015, 2018, 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.
*/
import java.io.IOException;
import java.math.BigDecimal;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import jdk.test.lib.apps.LingeredApp;
import jdk.testlibrary.Utils;
import jdk.test.lib.Platform;
/**
* @test
* @bug 8042397
* @summary Unit test for jmap utility test heap configuration reader
*
* @requires vm.hasSAandCanAttach
* @library /test/lib
* @library /lib/testlibrary
* @modules java.management
* jdk.hotspot.agent/sun.jvm.hotspot
*
* @build JMapHeapConfigTest TmtoolTestScenario
* @run main JMapHeapConfigTest
*/
public class JMapHeapConfigTest {
static final String expectedJMapValues[] = {
"MinHeapFreeRatio",
"MaxHeapFreeRatio",
"MaxHeapSize",
"NewSize",
"MaxNewSize",
"OldSize",
"NewRatio",
"SurvivorRatio",
"MetaspaceSize",
"CompressedClassSpaceSize",
"G1HeapRegionSize"};
// ignoring MaxMetaspaceSize
static final String desiredMaxHeapSize = "-Xmx128m";
private static Map<String, String> parseJMapOutput(List<String> jmapOutput) {
Map<String, String> heapConfigMap = new HashMap<String, String>();
boolean shouldParse = false;
for (String line : jmapOutput) {
line = line.trim();
if (line.startsWith("Heap Configuration:")) {
shouldParse = true;
continue;
}
if (line.startsWith("Heap Usage:")) {
shouldParse = false;
continue;
}
if (shouldParse && !line.equals("")) {
String[] lv = line.split("\\s+");
try {
heapConfigMap.put(lv[0], lv[2]);
} catch (ArrayIndexOutOfBoundsException ex) {
// Ignore mailformed lines
}
}
}
return heapConfigMap;
}
// Compare stored values
private static void compareValues(Map<String, String> parsedJMapOutput, Map<String, String> parsedVmOutput) {
for (String key : expectedJMapValues) {
try {
String jmapVal = parsedJMapOutput.get(key);
if (jmapVal == null) {
throw new RuntimeException("Key '" + key + "' doesn't exists in jmap output");
}
String vmVal = parsedVmOutput.get(key);
if (vmVal == null) {
throw new RuntimeException("Key '" + key + "' doesn't exists in vm output");
}
if (new BigDecimal(jmapVal).compareTo(new BigDecimal(vmVal)) != 0) {
throw new RuntimeException(String.format("Key %s doesn't match %s vs %s", key, vmVal, jmapVal));
}
} catch (NumberFormatException ex) {
throw new RuntimeException("Unexpected key '" + key + "' value", ex);
}
}
}
public static void main(String[] args) throws Exception {
System.out.println("Starting JMapHeapConfigTest");
if (!LingeredApp.isLastModifiedWorking()) {
// Exact behaviour of the test depends to operating system and the test nature,
// so just print the warning and continue
System.err.println("Warning! Last modified time doesn't work.");
}
boolean mx_found = false;
List<String> jvmOptions = Utils.getVmOptions();
for (String option : jvmOptions) {
if (option.startsWith("-Xmx")) {
System.out.println("INFO: maximum heap size set by JTREG as " + option);
mx_found = true;
break;
}
}
// Forward vm options to LingeredApp
ArrayList<String> cmd = new ArrayList();
cmd.addAll(Utils.getVmOptions());
if (!mx_found) {
cmd.add(desiredMaxHeapSize);
System.out.println("INFO: maximum heap size set explicitly as " + desiredMaxHeapSize);
}
cmd.add("-XX:+PrintFlagsFinal");
TmtoolTestScenario tmt = TmtoolTestScenario.create("jmap", "--heap");
int exitcode = tmt.launch(cmd);
if (exitcode != 0) {
throw new RuntimeException("Test FAILED jmap exits with non zero exit code " + exitcode);
}
Map<String,String> parsedJmapOutput = parseJMapOutput(tmt.getToolOutput());
Map<String,String> parsedVMOutput = tmt.parseFlagsFinal();
compareValues(parsedJmapOutput, parsedVMOutput);
// If test fails it throws RuntimeException
System.out.println("Test PASSED");
}
}
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