/*
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* 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.
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import sun.jvm.hotspot.HotSpotAgent;
import sun.jvm.hotspot.utilities.SystemDictionaryHelper;
import sun.jvm.hotspot.oops.InstanceKlass;
import sun.jvm.hotspot.debugger.*;
import jdk.test.lib.JDKToolLauncher;
import jdk.test.lib.JDKToolFinder;
import jdk.test.lib.Platform;
import jdk.test.lib.process.ProcessTools;
import jdk.test.lib.process.OutputAnalyzer;
import jdk.test.lib.Utils;
import jdk.test.lib.Asserts;
/*
* @test
* @library /test/lib
* @modules java.base/jdk.internal.misc
* @compile -XDignore.symbol.file=true
* --add-modules=jdk.hotspot.agent
* --add-exports=jdk.hotspot.agent/sun.jvm.hotspot=ALL-UNNAMED
* --add-exports=jdk.hotspot.agent/sun.jvm.hotspot.utilities=ALL-UNNAMED
* --add-exports=jdk.hotspot.agent/sun.jvm.hotspot.oops=ALL-UNNAMED
* --add-exports=jdk.hotspot.agent/sun.jvm.hotspot.debugger=ALL-UNNAMED
* TestInstanceKlassSizeForInterface.java
* @run main/othervm
* --add-modules=jdk.hotspot.agent
* --add-exports=jdk.hotspot.agent/sun.jvm.hotspot=ALL-UNNAMED
* --add-exports=jdk.hotspot.agent/sun.jvm.hotspot.utilities=ALL-UNNAMED
* --add-exports=jdk.hotspot.agent/sun.jvm.hotspot.oops=ALL-UNNAMED
* --add-exports=jdk.hotspot.agent/sun.jvm.hotspot.debugger=ALL-UNNAMED
* TestInstanceKlassSizeForInterface
*/
interface Language {
static final long nbrOfWords = 99999;
public abstract long getNbrOfWords();
}
class ParselTongue implements Language {
public long getNbrOfWords() {
return nbrOfWords * 4;
}
}
public class TestInstanceKlassSizeForInterface {
private static void SAInstanceKlassSize(int pid,
String[] instanceKlassNames) {
HotSpotAgent agent = new HotSpotAgent();
try {
agent.attach((int)pid);
}
catch (DebuggerException e) {
System.out.println(e.getMessage());
System.err.println("Unable to connect to process ID: " + pid);
agent.detach();
e.printStackTrace();
}
for (String instanceKlassName : instanceKlassNames) {
InstanceKlass iKlass = SystemDictionaryHelper.findInstanceKlass(
instanceKlassName);
Asserts.assertNotNull(iKlass,
String.format("Unable to find instance klass for %s", instanceKlassName));
System.out.println("SA: The size of " + instanceKlassName +
" is " + iKlass.getSize());
}
agent.detach();
}
private static String getJcmdInstanceKlassSize(OutputAnalyzer output,
String instanceKlassName) {
for (String s : output.asLines()) {
if (s.contains(instanceKlassName)) {
String tokens[];
System.out.println(s);
tokens = s.split("\\s+");
return tokens[3];
}
}
return null;
}
private static void createAnotherToAttach(
String[] instanceKlassNames) throws Exception {
ProcessBuilder pb = new ProcessBuilder();
// Grab the pid from the current java process and pass it
String[] toolArgs = {
"--add-modules=jdk.hotspot.agent",
"--add-exports=jdk.hotspot.agent/sun.jvm.hotspot=ALL-UNNAMED",
"--add-exports=jdk.hotspot.agent/sun.jvm.hotspot.utilities=ALL-UNNAMED",
"--add-exports=jdk.hotspot.agent/sun.jvm.hotspot.oops=ALL-UNNAMED",
"--add-exports=jdk.hotspot.agent/sun.jvm.hotspot.debugger=ALL-UNNAMED",
"TestInstanceKlassSizeForInterface",
Long.toString(ProcessTools.getProcessId())
};
pb.command(new String[] {
JDKToolFinder.getJDKTool("jcmd"),
Long.toString(ProcessTools.getProcessId()),
"GC.class_stats",
"VTab,ITab,OopMap,KlassBytes"
}
);
// Start a new process to attach to the current process
ProcessBuilder processBuilder = ProcessTools
.createJavaProcessBuilder(toolArgs);
OutputAnalyzer SAOutput = ProcessTools.executeProcess(processBuilder);
System.out.println(SAOutput.getOutput());
OutputAnalyzer jcmdOutput = new OutputAnalyzer(pb.start());
System.out.println(jcmdOutput.getOutput());
// Match the sizes from both the output streams
for (String instanceKlassName : instanceKlassNames) {
System.out.println ("Trying to match for " + instanceKlassName);
String jcmdInstanceKlassSize = getJcmdInstanceKlassSize(
jcmdOutput,
instanceKlassName);
Asserts.assertNotNull(jcmdInstanceKlassSize,
"Could not get the instance klass size from the jcmd output");
for (String s : SAOutput.asLines()) {
if (s.contains(instanceKlassName)) {
Asserts.assertTrue(
s.contains(jcmdInstanceKlassSize),
"The size computed by SA for " +
instanceKlassName + " does not match.");
}
}
}
}
public static void main (String... args) throws Exception {
String[] instanceKlassNames = new String[] {
"Language",
"ParselTongue",
"TestInstanceKlassSizeForInterface$1"
};
if (!Platform.shouldSAAttach()) {
System.out.println(
"SA attach not expected to work - test skipped.");
return;
}
if (args == null || args.length == 0) {
ParselTongue lang = new ParselTongue();
Language ventro = new Language() {
public long getNbrOfWords() {
return nbrOfWords * 8;
}
};
// Not tested at this point. The test needs to be enhanced
// later to test for the sizes of the Lambda MetaFactory
// generated anonymous classes too. (After JDK-8160228 gets
// fixed.)
Runnable r2 = () -> System.out.println("Hello world!");
r2.run();
createAnotherToAttach(instanceKlassNames);
} else {
SAInstanceKlassSize(Integer.parseInt(args[0]), instanceKlassNames);
}
}
}