74 lines
3.2 KiB
Java
74 lines
3.2 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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* @summary Test consistency of NMT by creating allocations of the Test type with various sizes and verifying visibility with jcmd
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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=detail MallocRoundingReportTest
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*
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*/
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import jdk.test.whitebox.WhiteBox;
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public class MallocRoundingReportTest {
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private static long K = 1024;
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public static void main(String args[]) throws Exception {
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WhiteBox wb = WhiteBox.getWhiteBox();
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long[] additionalBytes = {0, 1, 512, 650};
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long[] kByteSize = {1024, 2048};
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long mallocd_total = 0;
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for ( int i = 0; i < kByteSize.length; i++)
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{
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for (int j = 0; j < (additionalBytes.length); j++) {
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long curKB = kByteSize[i] + additionalBytes[j];
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// round up/down to the nearest KB to match NMT reporting
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long numKB = (curKB % kByteSize[i] >= 512) ? ((curKB / K) + 1) : curKB / K;
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// Use WB API to alloc and free with the mtTest type
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mallocd_total = wb.NMTMalloc(curKB);
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// Run 'jcmd <pid> VM.native_memory summary', check for expected output
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// NMT does not track memory allocations less than 1KB, and rounds to the nearest KB
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NMTTestUtils.runJcmdSummaryReportAndCheckOutput(
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"Test (reserved=" + numKB + "KB, committed=" + numKB + "KB)",
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"(malloc=" + numKB + "KB #1) (at peak)"
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);
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wb.NMTFree(mallocd_total);
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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=" + numKB + "KB #1)"
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);
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}
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}
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}
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}
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