xref: /aosp_15_r20/art/tools/ahat/src/ri-test-dump/Main.java (revision 795d594fd825385562da6b089ea9b2033f3abf5a)

/*
 * Copyright (C) 2018 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import com.sun.management.HotSpotDiagnosticMXBean;
import java.io.IOException;
import java.lang.management.ManagementFactory;
import javax.management.MBeanServer;

/**
 * Program used to create an RI heap dump for test purposes.
 */
public class Main {
  public static DumpedStuff stuff;

  public static void main(String[] args) throws IOException {
    if (args.length < 1) {
      System.err.println("no output file specified");
      return;
    }
    String file = args[0];

    stuff = new DumpedStuff();

    // Take a heap dump of this process.
    MBeanServer server = ManagementFactory.getPlatformMBeanServer();
    HotSpotDiagnosticMXBean bean = ManagementFactory.newPlatformMXBeanProxy(server,
        "com.sun.management:type=HotSpotDiagnostic", HotSpotDiagnosticMXBean.class);
    bean.dumpHeap(file, false);
  }
}