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Merge master jdk-17.0.9+2 into openj9-staging
Signed-off-by: J9 Build <j9build@ca.ibm.com>
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| @@ -0,0 +1,143 @@ | ||
| /* | ||
| * Copyright Amazon.com Inc. or its affiliates. All Rights Reserved. | ||
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | ||
| * | ||
| * This code is free software; you can redistribute it and/or modify it | ||
| * under the terms of the GNU General Public License version 2 only, as | ||
| * published by the Free Software Foundation. | ||
| * | ||
| * This code is distributed in the hope that it will be useful, but WITHOUT | ||
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | ||
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | ||
| * version 2 for more details (a copy is included in the LICENSE file that | ||
| * accompanied this code). | ||
| * | ||
| * You should have received a copy of the GNU General Public License version | ||
| * 2 along with this work; if not, write to the Free Software Foundation, | ||
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | ||
| * | ||
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | ||
| * or visit www.oracle.com if you need additional information or have any | ||
| * questions. | ||
| */ | ||
|
|
||
| import java.util.regex.Pattern; | ||
| import java.util.regex.Matcher; | ||
|
|
||
| import jdk.test.lib.process.ProcessTools; | ||
| import jdk.test.lib.process.OutputAnalyzer; | ||
|
|
||
| /** | ||
| * @test | ||
| * @summary Check that timer slack options work | ||
| * @requires os.family == "linux" | ||
| * @requires vm.flagless | ||
| * @library /test/lib | ||
| * @run driver TestTimerSlack | ||
| */ | ||
| public class TestTimerSlack { | ||
|
|
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| public static void main(String[] args) throws Exception { | ||
| int defaultSlack; | ||
|
|
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| // Check the timer slack value is not printed by default | ||
| { | ||
| ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-Xlog:os+thread", | ||
| "TestTimerSlack$TestMain"); | ||
|
|
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| OutputAnalyzer output = new OutputAnalyzer(pb.start()); | ||
| output.shouldHaveExitValue(0); | ||
| output.shouldNotContain("timer slack:"); | ||
| } | ||
|
|
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| // Check the timer slack value is not printed when explicitly disabled | ||
| { | ||
| ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-Xlog:os+thread", | ||
| "-XX:+UnlockExperimentalVMOptions", | ||
| "-XX:TimerSlack=-1", | ||
| "TestTimerSlack$TestMain"); | ||
|
|
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| OutputAnalyzer output = new OutputAnalyzer(pb.start()); | ||
| output.shouldHaveExitValue(0); | ||
| output.shouldNotContain("timer slack:"); | ||
| } | ||
|
|
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| // Check the timer slack value is good when system-wide default is requested | ||
| { | ||
| ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-Xlog:os+thread", | ||
| "-XX:+UnlockExperimentalVMOptions", | ||
| "-XX:TimerSlack=0", | ||
| "TestTimerSlack$TestMain"); | ||
|
|
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| OutputAnalyzer output = new OutputAnalyzer(pb.start()); | ||
| output.shouldHaveExitValue(0); | ||
| output.shouldContain("timer slack:"); | ||
|
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| defaultSlack = parseSlackValue(output); | ||
|
|
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| if (defaultSlack == 0) { | ||
| fail(output, "Default slack value (" + defaultSlack + ") is unexpected"); | ||
| } | ||
| } | ||
|
|
||
| // Check the timer slack value is accepted by all threads | ||
| for (int slack : new int[] {1, 10, 100, 1000, 10000, 100000, 1000000}) { | ||
| ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-Xlog:os+thread", | ||
| "-XX:+UnlockExperimentalVMOptions", | ||
| "-XX:TimerSlack=" + slack, | ||
| "TestTimerSlack$TestMain"); | ||
|
|
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| OutputAnalyzer output = new OutputAnalyzer(pb.start()); | ||
| output.shouldHaveExitValue(0); | ||
| output.shouldContain("timer slack:"); | ||
|
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| int actualSlack = parseSlackValue(output); | ||
| if (actualSlack != slack) { | ||
| fail(output, "Actual slack value (" + actualSlack + ") is not the requested one (" + slack + ")"); | ||
| } | ||
| } | ||
| } | ||
|
|
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| static final Pattern EXTRACT_PATTERN = Pattern.compile("(.*)timer slack: ([0-9]+)ns(.*)"); | ||
|
|
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| public static int parseSlackValue(OutputAnalyzer output) { | ||
| Integer value = null; | ||
| for (String s : output.asLines()) { | ||
| Matcher m = EXTRACT_PATTERN.matcher(s); | ||
| if (m.matches()) { | ||
| Integer parsedValue = Integer.parseInt(m.group(2)); | ||
| if (value == null) { | ||
| value = parsedValue; | ||
| } else if (!value.equals(parsedValue)) { | ||
| fail(output, "Multiple timer slack values detected"); | ||
| } | ||
| } | ||
| } | ||
| if (value == null) { | ||
| fail(output, "No timer slack values detected"); | ||
| } | ||
| return value; | ||
| } | ||
|
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| private static void fail(OutputAnalyzer output, String msg) { | ||
| output.reportDiagnosticSummary(); | ||
| throw new IllegalStateException(msg); | ||
| } | ||
|
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| public static class TestMain { | ||
| static final int THREADS = 8; | ||
|
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| public static void main(String... args) throws Exception { | ||
| Thread[] ts = new Thread[THREADS]; | ||
| for (int c = 0; c < THREADS; c++) { | ||
| ts[c] = new Thread(); | ||
| ts[c].start(); | ||
| } | ||
|
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| for (int c = 0; c < THREADS; c++) { | ||
| ts[c].join(); | ||
| } | ||
| } | ||
| } | ||
|
|
||
| } |
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