content: /*
   * Copyright (C) 2011 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 java.lang.reflect.Method;
  import java.util.ArrayList;
  import java.util.List;
  
  public class Main {
  
      public static void main(String[] args) throws Exception {
          int alloc1 = 1;
          // Setup reflection stuff before allocating to prevent OOME caused by allocations from
          // Class.forName or getDeclaredMethod.
          // Reflective equivalent of: dalvik.system.VMRuntime.getRuntime().clearGrowthLimit();
          final Class<?> vm_runtime = Class.forName("dalvik.system.VMRuntime");
          final Method get_runtime = vm_runtime.getDeclaredMethod("getRuntime");
          final Object runtime = get_runtime.invoke(null);
          final Method clear_growth_limit = vm_runtime.getDeclaredMethod("clearGrowthLimit");
          List<byte[]> l = new ArrayList<byte[]>();
          try {
              while (true) {
                  // Allocate a MB at a time
                  l.add(new byte[1048576]);
                  alloc1++;
              }
          } catch (OutOfMemoryError e) {
              l = null;
          }
          // Expand the heap to the maximum size.
          clear_growth_limit.invoke(runtime);
          int alloc2 = 1;
          l = new ArrayList<byte[]>();
          try {
              while (true) {
                  // Allocate a MB at a time
                  l.add(new byte[1048576]);
                  alloc2++;
              }
          } catch (OutOfMemoryError e2) {
              l = null;
              if (alloc1 > alloc2) {
                  System.out.println("ERROR: Allocated less memory after growth" +
                      "limit cleared (" + alloc1 + " MBs > " + alloc2 + " MBs");
                  System.exit(1);
              }
          }
          System.out.println("Test complete");
      }
  }
  