test/hotspot/jtreg/runtime/Safepoint/TestAbortVMOnSafepointTimeout.java

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 * Copyright (c) 2019 SAP SE. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * accompanied this code).
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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import jdk.test.lib.*;
import jdk.test.lib.process.*;
import jdk.test.whitebox.WhiteBox;

/*
 * @test TestAbortVMOnSafepointTimeout
 * @summary Check if VM can kill thread which doesn't reach safepoint.
 * @bug 8219584 8227528
 * @requires vm.flagless
 * @library /testlibrary /test/lib
 * @build jdk.test.whitebox.WhiteBox
 * @run driver jdk.test.lib.helpers.ClassFileInstaller jdk.test.whitebox.WhiteBox
 * @run driver TestAbortVMOnSafepointTimeout
 */

public class TestAbortVMOnSafepointTimeout {

    public static void main(String[] args) throws Exception {
        ProcessBuilder pb = ProcessTools.createLimitedTestJavaProcessBuilder(
                "-Xbootclasspath/a:.",
                "-XX:+UnlockDiagnosticVMOptions",
                "-XX:+WhiteBoxAPI",
                "-XX:+SafepointTimeout",
                "-XX:+SafepointALot",
                "-XX:+AbortVMOnSafepointTimeout",
                "-XX:SafepointTimeoutDelay=50",
                "-XX:GuaranteedSafepointInterval=1",
                "-XX:-CreateCoredumpOnCrash",
                "-Xms64m",
                "TestAbortVMOnSafepointTimeout$Test",
                "999" /* 999 is max unsafe sleep */
        );

        OutputAnalyzer output = new OutputAnalyzer(pb.start());
        output.shouldContain("Timed out while spinning to reach a safepoint.");
        if (Platform.isWindows()) {
            output.shouldContain("Safepoint sync time longer than");
        } else {
            output.shouldContain("SIGILL");
            if (Platform.isLinux()) {
                output.shouldContain("(sent by kill)");
            }
        }
        output.shouldNotHaveExitValue(0);
    }

    public static class Test {
        public static void main(String[] args) throws Exception {
            Integer waitTime = Integer.parseInt(args[0]);
            WhiteBox wb = WhiteBox.getWhiteBox();
            // Loop here to cause a safepoint timeout.
            while (true) {
                wb.waitUnsafe(waitTime);
            }
        }
    }
}