blob: dc50ccc1b733de4a450d7f399b59e6594e0aed27 [file] [log] [blame]
#!/usr/bin/env dart
// Copyright (c) 2016, the Dart project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.
import 'package:kernel/kernel.dart';
import 'dart:io';
/// Builds N copies of the AST for the given component.
/// Pass --print-metrics to the Dart VM to measure the memory use.
main(List<String> args) {
if (args.length == 0) {
print('USAGE: ast_membench FILE.dill NUM_COPIES');
exit(1);
}
String filename = args[0];
const int defaultCopyCount = 10;
int copyCount = args.length == 2 ? int.parse(args[1]) : defaultCopyCount;
List<Component> keepAlive = <Component>[];
for (int i = 0; i < copyCount; ++i) {
keepAlive.add(loadComponentFromBinary(filename));
}
print('$copyCount copies built');
if (args.contains('-v')) {
// Use of the list for something to avoid premature GC.
int size = 0;
for (var component in keepAlive) {
size += component.libraries.length;
}
print(size);
}
}