84 lines
3.0 KiB
Java
84 lines
3.0 KiB
Java
/*
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* Copyright (c) 2023, Oracle and/or its affiliates. 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 8306841
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* @summary Sanity check Java Heap size values
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* @modules java.base/jdk.internal.misc
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* @library /test/lib
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* @run driver NMTJavaHeapTest
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*/
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import jdk.test.lib.process.ProcessTools;
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import jdk.test.lib.Asserts;
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import jdk.test.lib.Utils;
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import jdk.test.lib.process.OutputAnalyzer;
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public class NMTJavaHeapTest {
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public static void main(String args[]) throws Exception {
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ProcessBuilder pb = ProcessTools.createTestJavaProcessBuilder(
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"-XX:+UnlockDiagnosticVMOptions",
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"-XX:+PrintNMTStatistics",
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"-XX:NativeMemoryTracking=summary",
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"-version");
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OutputAnalyzer output = new OutputAnalyzer(pb.start());
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// Java Heap (reserved=786432KB, committed=49152KB)
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String pattern = ".*Java Heap \\(reserved=.*, committed=(.*)\\).*";
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String committed = output.firstMatch(pattern, 1);
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Asserts.assertNotNull(committed, "Couldn't find pattern '" + pattern
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+ "': in output '" + output.getOutput() + "'");
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long committedBytes = committedStringToBytes(committed);
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// Must be more than zero
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Asserts.assertGT(committedBytes, 0L);
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// Compare against the max heap size
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long maxBytes = Runtime.getRuntime().maxMemory();
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Asserts.assertLTE(committedBytes, maxBytes);
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}
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private static long K = 1024;
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private static long M = K * 1024;
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private static long G = M * 1024;
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private static long committedStringToBytes(String committed) {
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long multiplier = 1;
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if (committed.endsWith("GB")) {
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multiplier = G;
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committed = committed.replace("GB", "");
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} else if (committed.endsWith("MB")) {
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multiplier = M;
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committed = committed.replace("MB", "");
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} else if (committed.endsWith("KB")) {
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multiplier = K;
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committed = committed.replace("KB", "");
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}
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return Long.parseLong(committed) * multiplier;
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}
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}
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