blob: d31cbf1fe1aedb98178556610c4d3bc1dbdc1671 [file] [log] [blame]
/*
* 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");
}
}