content: /*
   * Copyright (C) 2016 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.
   */
  
  package art;
  
  import java.util.ArrayList;
  
  public class Test908 {
    public static void run() throws Exception {
      doTest();
    }
  
    public static void doTest() throws Exception {
      // Use a list to ensure objects must be allocated.
      ArrayList<Object> l = new ArrayList<>(100);
  
      setupGcCallback();
  
      enableGcTracking(true);
      run(l);
  
      enableGcTracking(false);
      run(l);
    }
  
    private static void run(ArrayList<Object> l) {
      allocate(l, 1);
      l.clear();
  
      Runtime.getRuntime().gc();
  
      printStats();
  
      // Note: the reporting will not depend on the heap layout (which could be unstable). Walking
      //       the tag table should give us a stable output order.
      for (int i = 10; i <= 1000; i *= 10) {
        allocate(l, i);
      }
      l.clear();
  
      Runtime.getRuntime().gc();
  
      printStats();
  
      Runtime.getRuntime().gc();
  
      printStats();
    }
  
    private static void allocate(ArrayList<Object> l, long tag) {
      Object obj = new Object();
      l.add(obj);
    }
  
    private static void printStats() {
        System.out.println("---");
        int s = getGcStarts();
        int f = getGcFinishes();
        System.out.println((s > 0) + " " + (f > 0));
    }
  
    private static native void setupGcCallback();
    private static native void enableGcTracking(boolean enable);
    private static native int getGcStarts();
    private static native int getGcFinishes();
  }
  