99 lines
4.3 KiB
Java
99 lines
4.3 KiB
Java
/*
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* Copyright Amazon.com Inc. 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 TestOnSpinWaitAArch64DefaultFlags
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* @summary Check default values of '-XX:OnSpinWaitInst' and '-XX:OnSpinWaitInstCount' for AArch64 implementations.
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* @bug 8277137
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* @library /test/lib /
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*
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* @requires os.arch=="aarch64"
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*
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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
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* -XX:+WhiteBoxAPI
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* compiler.onSpinWait.TestOnSpinWaitAArch64DefaultFlags
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*/
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package compiler.onSpinWait;
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import java.util.Iterator;
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import java.util.List;
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import jdk.test.lib.process.OutputAnalyzer;
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import jdk.test.lib.process.ProcessTools;
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import jdk.test.whitebox.cpuinfo.CPUInfo;
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public class TestOnSpinWaitAArch64DefaultFlags {
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private static boolean isCPUModelNeoverseN1(String cpuModel) {
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return cpuModel.contains("0xd0c");
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}
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private static void checkFinalFlagsEqualTo(ProcessBuilder pb, String expectedOnSpinWaitInstValue, String expectedOnSpinWaitInstCountValue) throws Exception {
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OutputAnalyzer analyzer = new OutputAnalyzer(pb.start());
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analyzer.shouldHaveExitValue(0);
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Iterator<String> iter = analyzer.asLines().listIterator();
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String line = null;
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boolean hasExpectedOnSpinWaitInstValue = false;
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boolean hasExpectedOnSpinWaitInstCountValue = false;
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while (iter.hasNext()) {
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line = iter.next();
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if (!hasExpectedOnSpinWaitInstValue && line.contains("ccstr OnSpinWaitInst")) {
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hasExpectedOnSpinWaitInstValue = line.contains("= " + expectedOnSpinWaitInstValue);
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}
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if (!hasExpectedOnSpinWaitInstCountValue && line.contains("uint OnSpinWaitInstCount")) {
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hasExpectedOnSpinWaitInstCountValue = line.contains("= " + expectedOnSpinWaitInstCountValue);
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}
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}
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if (!hasExpectedOnSpinWaitInstValue) {
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System.out.println(analyzer.getOutput());
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throw new RuntimeException("OnSpinWaitInst with the expected value '" + expectedOnSpinWaitInstValue + "' not found.");
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}
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if (!hasExpectedOnSpinWaitInstCountValue) {
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System.out.println(analyzer.getOutput());
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throw new RuntimeException("OnSpinWaitInstCount with the expected value '" + expectedOnSpinWaitInstCountValue + "' not found.");
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}
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}
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public static void main(String[] args) throws Exception {
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List<String> cpuFeatures = CPUInfo.getFeatures();
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if (cpuFeatures.isEmpty()) {
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System.out.println("Skip because no CPU features are available.");
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return;
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}
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final String cpuModel = cpuFeatures.get(0);
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if (isCPUModelNeoverseN1(cpuModel)) {
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checkFinalFlagsEqualTo(ProcessTools.createLimitedTestJavaProcessBuilder("-XX:+UnlockDiagnosticVMOptions", "-XX:+PrintFlagsFinal", "-version"),
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"isb", "1");
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checkFinalFlagsEqualTo(ProcessTools.createLimitedTestJavaProcessBuilder("-XX:+UnlockDiagnosticVMOptions", "-XX:OnSpinWaitInstCount=2", "-XX:+PrintFlagsFinal", "-version"),
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"isb", "2");
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} else {
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System.out.println("Skip because no defaults for CPU model: " + cpuModel);
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}
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}
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}
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