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package com.oracle.truffle.js.stats.heap;
import java.io.File;
import java.io.IOException;
import java.util.Arrays;
import java.util.Collection;
import java.util.LinkedList;
import java.util.List;
import org.netbeans.lib.profiler.heap.Heap;
import org.netbeans.lib.profiler.heap.HeapFactory;
import org.netbeans.lib.profiler.heap.JavaClass;
import com.oracle.truffle.api.impl.DefaultCallTarget;
import com.oracle.truffle.api.nodes.Node;
import com.oracle.truffle.api.nodes.NodeCloneable;
public class HeapDumpAnalyzer {
private static final String NODE = Node.class.getName();
private static final String DEFAULT_CALL_TARGET = DefaultCallTarget.class.getName();
private static final String OPTIMIZED_CALL_TARGET = "org.graalvm.compiler.truffle.OptimizedCallTarget";
private static final String NODE_CLONEABLE = NodeCloneable.class.getName();
public static void analyzeHeap(List<String> classNames, List<File> dumps) throws IOException {
for (File dump : dumps) {
String dumpName = dump.getName();
Heap heap = HeapFactory.createHeap(dump);
System.out.println(dumpName + "\tTotal.JavaHeap\tsize:\t" + heap.getSummary().getTotalLiveBytes());
for (String className : classNames) {
long instances = 0L;
long size = 0L;
JavaClass javaClass = heap.getJavaClassByName(className);
if (javaClass != null) {
@SuppressWarnings("unchecked")
Collection<JavaClass> subClasses = javaClass.getSubClasses();
subClasses.add(javaClass);
for (JavaClass subClass : subClasses) {
instances += subClass.getInstancesCount();
size += subClass.getAllInstancesSize();
}
String prefix = dumpName + "\t" + className;
System.out.println(prefix + "\tinstances:\t" + instances);
System.out.println(prefix + "\tsize:\t" + size);
}
}
}
}
private static void printUsageAndExit(int exitStatus) {
System.out.println("Usage:");
System.out.println("\tjava " + HeapDumpAnalyzer.class.getName() + " [-c <class name>]... dumps ...\n");
System.out.println("positional arguments:");
System.out.println("\theap dumps...\n");
System.out.println("optional arguments:");
System.out.println("\t-c <class name>, --class <class name>");
System.out.println("\t\t\treport statistics about the subtypes of <className>");
System.out.println("\t\t\tDefault: " + NODE);
System.exit(exitStatus);
}
public static void main(String[] args) throws IOException {
List<String> classNames = new LinkedList<>();
List<File> dumps = new LinkedList<>();
// Checkstyle: stop
// - control variable 'i' is modified
for (int i = 0; i < args.length; i++) {
switch (args[i]) {
case "-h":
case "--help":
printUsageAndExit(0);
break;
case "-c":
case "--class":
if (++i < args.length) {
classNames.add(args[i]);
} else {
printUsageAndExit(1);
}
break;
default:
dumps.add(new File(args[i]));
break;
}
}
// Checkstyle: resume
if (classNames.size() == 0) {
classNames.addAll(Arrays.asList(NODE, NODE_CLONEABLE, DEFAULT_CALL_TARGET, OPTIMIZED_CALL_TARGET));
}
if (dumps.size() == 0) {
printUsageAndExit(2);
}
analyzeHeap(classNames, dumps);
}
}