| /* |
| * Copyright (c) 2018, Google and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package MyPackage; |
| |
| import java.util.List; |
| |
| /** |
| * @test |
| * @summary Verifies the JVMTI Heap Monitor API does not do infinite recursion. |
| * @build Frame HeapMonitor |
| * @compile HeapMonitorRecursiveTest.java |
| * @run main/othervm/native -agentlib:HeapMonitorTest MyPackage.HeapMonitorRecursiveTest |
| */ |
| public class HeapMonitorRecursiveTest { |
| private native static void setCallbackToCallAllocateSomeMore(); |
| private native static boolean didCallback(); |
| private static int[] tab; |
| |
| public static void main(String[] args) throws Exception { |
| // Set ourselves to sample everything. |
| HeapMonitor.sampleEverything(); |
| |
| // Set a callback that does allocate more data. If a callback's allocations get sampled, this |
| // would do an infinite recursion. |
| setCallbackToCallAllocateSomeMore(); |
| |
| // Do a few allocations now and see if the callback happens and the program finishes: |
| for (int i = 0; i < 1000; i++) { |
| tab = new int[1024]; |
| } |
| |
| if (!didCallback()) { |
| throw new RuntimeException("Did not get a callback..."); |
| } |
| } |
| } |