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package com.oracle.truffle.js.stats;
import static com.oracle.truffle.js.shell.JSLauncher.PreprocessResult.Consumed;
import java.io.File;
import java.io.IOException;
import org.graalvm.options.OptionCategory;
import org.graalvm.polyglot.Context;
import com.oracle.truffle.js.builtins.helper.HeapDump;
import com.oracle.truffle.js.runtime.JSConfig;
import com.oracle.truffle.js.shell.RepeatingLauncher;
import com.oracle.truffle.js.stats.heap.HeapDumpAnalyzer;
public class ShellWithStats extends RepeatingLauncher {
private boolean heapDump = false;
private String heapDumpFileName = null;
public static void main(String[] args) {
new ShellWithStats().launch(args);
}
@Override
protected PreprocessResult preprocessArgument(String argument) {
if (argument.equals("heap-dump")) {
heapDump = true;
return Consumed;
}
if (argument.startsWith("heap-dump-file")) {
heapDumpFileName = argument.substring(argument.indexOf("=") + 1);
return Consumed;
}
return super.preprocessArgument(argument);
}
@Override
protected void printHelp(OptionCategory maxCategory) {
super.printHelp(maxCategory);
printOption("--heap-dump", "take a heap dump at the end of the execution");
}
@Override
protected int executeScripts(Context.Builder contextBuilder) {
int result = super.executeScripts(contextBuilder);
if (!JSConfig.SubstrateVM && heapDump) {
try {
String dumpName = heapDumpFileName == null ? HeapDump.defaultDumpName() : heapDumpFileName;
deleteIfExists(dumpName);
System.out.println("Dumping the heap to: " + dumpName);
HeapDump.dump(dumpName, true);
HeapDumpAnalyzer.main(new String[]{dumpName});
} catch (IOException e) {
throw new RuntimeException(e);
}
}
return result;
}
private static void deleteIfExists(String dumpName) {
File dumpFile = new File(dumpName);
if (dumpFile.exists()) {
System.out.println("Deleting existing file: " + dumpName);
if (!dumpFile.delete()) {
System.out.println("could not delete");
}
}
}
}