test/hotspot/jtreg/runtime/ErrorHandling/ShowEventsOnCrashTest.java

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/*
 * @test
 * @bug 8355627
 * @summary Test that events are listed in the hs_err_pid file
 * @library /test/lib
 * @requires vm.flagless
 * @requires vm.debug == true & (os.family == "linux" | os.family == "windows")
 * @modules java.base/jdk.internal.misc
 * @run driver ShowEventsOnCrashTest
 */

// Note: this test can only run on debug since it relies on VMError::controlled_crash() which
// only exists in debug builds.
import java.io.File;
import java.util.regex.Pattern;

import jdk.test.lib.process.OutputAnalyzer;
import jdk.test.lib.process.ProcessTools;

public class ShowEventsOnCrashTest {

    public static void main(String[] args) throws Exception {

        ProcessBuilder pb = ProcessTools.createLimitedTestJavaProcessBuilder(
            "-XX:+UnlockDiagnosticVMOptions", "-Xmx100M", "-XX:-CreateCoredumpOnCrash",
            "-XX:ErrorHandlerTest=2",
            "-version");

        OutputAnalyzer output_detail = new OutputAnalyzer(pb.start());

        // we should have crashed with an internal error. We should definitely NOT have crashed with a segfault
        // (which would be a sign that the assert poison page mechanism does not work).
        output_detail.shouldMatch("# A fatal error has been detected by the Java Runtime Environment:.*");
        output_detail.shouldMatch("# +Internal Error.*");
        File hs_err_file = HsErrFileUtils.openHsErrFileFromOutput(output_detail);
        // Pattern match the hs_err_pid file.
        Pattern[] patterns = new Pattern[] {
            Pattern.compile("Compilation events \\([0-9]* events\\):"),
            Pattern.compile("GC Heap Usage History \\([0-9]* events\\):"),
            Pattern.compile("Metaspace Usage History \\([0-9]* events\\):"),
            Pattern.compile("Dll operation events \\([0-9]* events\\):"),
            Pattern.compile("Deoptimization events \\([0-9]* events\\):"),
            Pattern.compile("Classes loaded \\([0-9]* events\\):"),
            Pattern.compile("Classes unloaded \\([0-9]* events\\):"),
            Pattern.compile("Classes redefined \\([0-9]* events\\):"),
            Pattern.compile("Internal exceptions \\([0-9]* events\\):"),
            Pattern.compile("VM Operations \\([0-9]* events\\):"),
            Pattern.compile("Memory protections \\([0-9]* events\\):")
        };

        HsErrFileUtils.checkHsErrFileContent(hs_err_file, patterns, false);

    }
}