| /* |
| * Copyright (c) 2014, 2016, Oracle 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. |
| */ |
| |
| /* |
| * @test |
| * @bug 8054836 |
| * @summary Test to verify correctness of malloc tracking |
| * @key nmt jcmd |
| * @library /test/lib |
| * @modules java.base/jdk.internal.misc |
| * java.management |
| * @build sun.hotspot.WhiteBox |
| * @run main ClassFileInstaller sun.hotspot.WhiteBox |
| * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -XX:NativeMemoryTracking=detail MallocTrackingVerify |
| * |
| */ |
| |
| import java.util.ArrayList; |
| import java.util.Random; |
| |
| import jdk.test.lib.process.ProcessTools; |
| import jdk.test.lib.process.OutputAnalyzer; |
| import jdk.test.lib.JDKToolFinder; |
| |
| import sun.hotspot.WhiteBox; |
| |
| public class MallocTrackingVerify { |
| private static int MAX_ALLOC = 4 * 1024; |
| |
| static ArrayList<MallocMemory> mallocd_memory = new ArrayList<MallocMemory>(); |
| static long mallocd_total = 0; |
| public static WhiteBox wb = WhiteBox.getWhiteBox(); |
| |
| public static void main(String args[]) throws Exception { |
| OutputAnalyzer output; |
| |
| // Grab my own PID |
| String pid = Long.toString(ProcessTools.getProcessId()); |
| ProcessBuilder pb = new ProcessBuilder(); |
| |
| Random random = new Random(); |
| // Allocate small amounts of memory with random pseudo call stack |
| while (mallocd_total < MAX_ALLOC) { |
| int size = random.nextInt(31) + 1; |
| long addr = wb.NMTMallocWithPseudoStack(size, random.nextInt()); |
| if (addr != 0) { |
| MallocMemory mem = new MallocMemory(addr, size); |
| mallocd_memory.add(mem); |
| mallocd_total += size; |
| } else { |
| System.out.println("Out of malloc memory"); |
| break; |
| } |
| } |
| |
| pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.native_memory", "summary" }); |
| output = new OutputAnalyzer(pb.start()); |
| output.shouldContain("Test (reserved=4KB, committed=4KB)"); |
| |
| // Free |
| for (MallocMemory mem : mallocd_memory) { |
| wb.NMTFree(mem.addr()); |
| } |
| |
| // Run 'jcmd <pid> VM.native_memory summary', check for expected output |
| pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, |
| "VM.native_memory", "summary" }); |
| output = new OutputAnalyzer(pb.start()); |
| output.shouldNotContain("Test (reserved="); |
| } |
| |
| static class MallocMemory { |
| private long addr; |
| private int size; |
| |
| MallocMemory(long addr, int size) { |
| this.addr = addr; |
| this.size = size; |
| } |
| |
| long addr() { |
| return this.addr; |
| } |
| |
| int size() { |
| return this.size; |
| } |
| } |
| } |