1 /* 2 * Copyright (c) 2018, Google and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 package MyPackage; 25 26 import java.util.List; 27 28 /** 29 * @test 30 * @summary Verifies the JVMTI Heap Monitor API when allocating a multi-array. 31 * @build Frame HeapMonitor 32 * @compile HeapMonitorMultiArrayTest.java 33 * @run main/othervm/native -agentlib:HeapMonitorTest MyPackage.HeapMonitorMultiArrayTest 34 */ 35 public class HeapMonitorMultiArrayTest { 36 37 private static int[][] tab; 38 public static void main(String[] args) throws Exception { 39 // Set ourselves to sample everything. 40 HeapMonitor.sampleEverything(); 41 42 // Do a few allocations now and see if the callback happens and the program finishes: 43 HeapMonitor.resetEventStorage(); 44 int iterations = 1000; 45 int allocationsPerIteration = 6; 46 for (int i = 0; i < iterations; i++) { 47 tab = new int[5][5]; 48 } 49 50 int sampledEvents = HeapMonitor.sampledEvents(); 51 int expectedNumber = iterations * allocationsPerIteration; 52 53 if (sampledEvents != expectedNumber) { 54 throw new RuntimeException("Number of samples (" + sampledEvents + ") not the expected (" 55 + expectedNumber + ")"); 56 } 57 } 58 }