76 lines
2.6 KiB
Java
76 lines
2.6 KiB
Java
/*
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* Copyright (c) 2015, 2023, Oracle and/or its affiliates. All rights reserved.
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* Copyright 2016 Azul Systems, 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 TestOnSpinWait
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* @summary (x86 only) checks that java.lang.Thread.onSpinWait is intrinsified
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* @bug 8147844
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* @library /test/lib
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*
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* @requires vm.flagless
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* @requires os.arch=="x86" | os.arch=="amd64" | os.arch=="x86_64"
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*
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* @run driver compiler.onSpinWait.TestOnSpinWait
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*/
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package compiler.onSpinWait;
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import jdk.test.lib.process.OutputAnalyzer;
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import jdk.test.lib.process.ProcessTools;
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public class TestOnSpinWait {
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public static void main(String[] args) throws Exception {
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// Test C2 compiler
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ProcessBuilder pb = ProcessTools.createLimitedTestJavaProcessBuilder(
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"-XX:+IgnoreUnrecognizedVMOptions", "-showversion",
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"-XX:-TieredCompilation", "-Xbatch",
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"-XX:+PrintCompilation", "-XX:+UnlockDiagnosticVMOptions",
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"-XX:+PrintInlining", Launcher.class.getName());
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OutputAnalyzer analyzer = new OutputAnalyzer(pb.start());
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analyzer.shouldHaveExitValue(0);
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// The test is applicable only to C2 (present in Server VM).
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if (analyzer.getStderr().contains("Server VM")) {
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analyzer.shouldContain("java.lang.Thread::onSpinWait (1 bytes) (intrinsic)");
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}
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}
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static class Launcher {
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public static void main(final String[] args) throws Exception {
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int end = 20_000;
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for (int i=0; i < end; i++) {
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test();
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}
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}
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static void test() {
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java.lang.Thread.onSpinWait();
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}
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}
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}
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