109 lines
3.6 KiB
Java
109 lines
3.6 KiB
Java
/*
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* Copyright (c) 2014, 2023, Oracle and/or its affiliates. All rights reserved.
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* Copyright (c) 2023, Red Hat, Inc. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* @test
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* @bug 8054836
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* @summary Test to verify correctness of malloc tracking
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* @key randomness
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* @library /test/lib
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* @modules java.base/jdk.internal.misc
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* java.management
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* @build jdk.test.whitebox.WhiteBox
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* @run driver jdk.test.lib.helpers.ClassFileInstaller jdk.test.whitebox.WhiteBox
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* @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -XX:NativeMemoryTracking=summary MallocTrackingVerify
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*
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*/
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import java.util.ArrayList;
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import java.util.Random;
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import jdk.test.lib.process.ProcessTools;
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import jdk.test.lib.process.OutputAnalyzer;
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import jdk.test.lib.JDKToolFinder;
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import jdk.test.lib.Utils;
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import jdk.test.whitebox.WhiteBox;
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public class MallocTrackingVerify {
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private static int MAX_ALLOC = 4 * 1024;
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static ArrayList<MallocMemory> mallocd_memory = new ArrayList<MallocMemory>();
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static long mallocd_total = 0;
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public static WhiteBox wb = WhiteBox.getWhiteBox();
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public static void main(String args[]) throws Exception {
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Random random = Utils.getRandomInstance();
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// Allocate small amounts of memory with random pseudo call stack
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while (mallocd_total < MAX_ALLOC) {
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int size = random.nextInt(31) + 1;
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long addr = wb.NMTMallocWithPseudoStack(size, random.nextInt());
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if (addr != 0) {
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MallocMemory mem = new MallocMemory(addr, size);
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mallocd_memory.add(mem);
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mallocd_total += size;
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} else {
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System.out.println("Out of malloc memory");
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break;
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}
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}
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NMTTestUtils.runJcmdSummaryReportAndCheckOutput(
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"Test (reserved=4KB, committed=4KB)",
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"(malloc=4KB #" + mallocd_memory.size() + ") (at peak)"
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);
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// Free
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for (MallocMemory mem : mallocd_memory) {
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wb.NMTFree(mem.addr());
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}
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// Run 'jcmd <pid> VM.native_memory summary', check for expected output
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NMTTestUtils.runJcmdSummaryReportAndCheckOutput(
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"Test (reserved=0KB, committed=0KB)",
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"(malloc=0KB) (peak=4KB #" + + mallocd_memory.size() + ")"
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);
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}
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static class MallocMemory {
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private long addr;
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private int size;
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MallocMemory(long addr, int size) {
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this.addr = addr;
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this.size = size;
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}
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long addr() {
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return this.addr;
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}
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int size() {
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return this.size;
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}
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}
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}
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