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

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/*
 * @test
 * @summary Check secondary error handling
 * @library /test/lib
 * @requires vm.flagless
 * @requires vm.debug
 * @requires os.family != "windows"
 * @modules java.base/jdk.internal.misc
 *          java.management
 * @run driver SecondaryErrorTest no_callstacks
 */

/*
 * @test
 * @summary Check secondary error handling
 * @library /test/lib
 * @requires vm.flagless
 * @requires vm.debug
 * @requires os.family != "windows"
 * @modules java.base/jdk.internal.misc
 *          java.management
 * @run driver SecondaryErrorTest with_callstacks
 */

import java.io.File;
import java.util.ArrayList;
import java.util.regex.Pattern;

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

public class SecondaryErrorTest {


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

    boolean with_callstacks = false;
    if (args.length != 1) {
      throw new IllegalArgumentException("Missing argument");
    } else if (args[0].equals("with_callstacks")) {
      with_callstacks = true;
    } else if (args[0].equals("no_callstacks")) {
      with_callstacks = false;
    } else {
      throw new IllegalArgumentException("unknown argument (" + args[0] + ")");
    }

    // How this works:
    // The test will fault with SIGFPE (ErrorHandlerTest=15) and then, during error handling,
    // fault twice with SIGSEGV (TestCrashInErrorHandler=14). The point is not only to test
    // secondary crashes, but secondary crashes with a *different* error signal. This should
    // be handled correctly and not hang/end the process (so the signal mask must be set correctly).
    // See JDK-8065895.
    // We do this twice, to check that secondary signal handling works repeatedly.
    // We also check, optionally, that +ErrorLogSecondaryErrorDetails produces callstacks for
    // the secondary error.

    ProcessBuilder pb = ProcessTools.createLimitedTestJavaProcessBuilder(
        "-XX:+UnlockDiagnosticVMOptions",
        "-Xmx100M",
        "-XX:-CreateCoredumpOnCrash",
        "-XX:ErrorHandlerTest=15",
        "-XX:TestCrashInErrorHandler=14",
        "-XX:" + (with_callstacks ? "+" : "-") + "ErrorLogSecondaryErrorDetails",
        "-version");

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

    // we should have crashed with a SIGFPE
    output_detail.shouldMatch("# A fatal error has been detected by the Java Runtime Environment:.*");
    output_detail.shouldMatch("#.+SIGFPE.*");

    // extract hs-err file
    File hs_err_file = HsErrFileUtils.openHsErrFileFromOutput(output_detail);

    // scan hs-err file: File should contain the "[error occurred during error reporting..]"
    // markers which show that the secondary error handling kicked in and handled the
    // error successfully. As an added test, we check that the last line contains "END.",
    // which is an end marker written in the last step and proves that hs-err file was
    // completely written.

    ArrayList<Pattern> patternlist = new ArrayList<>();
    patternlist.add(Pattern.compile("Will crash now \\(TestCrashInErrorHandler=14\\)..."));
    patternlist.add(Pattern.compile("\\[error occurred during error reporting \\(test secondary crash 1\\).*\\]"));
    if (with_callstacks) {
        patternlist.add(Pattern.compile("\\[siginfo:.*\\(SIGSEGV\\).*\\]"));
        patternlist.add(Pattern.compile("\\[stack: Native frames:.*"));
        patternlist.add(Pattern.compile(".*VMError::controlled_crash.*"));
    }
    // and again, to see that repeated error reporting steps work
    patternlist.add(Pattern.compile("Will crash now \\(TestCrashInErrorHandler=14\\)..."));
    patternlist.add(Pattern.compile("\\[error occurred during error reporting \\(test secondary crash 2\\).*\\]"));
    if (with_callstacks) {
        patternlist.add(Pattern.compile("\\[siginfo:.*\\(SIGSEGV\\).*\\]"));
        patternlist.add(Pattern.compile("\\[stack: Native frames:.*"));
        patternlist.add(Pattern.compile(".*VMError::controlled_crash.*"));
    }
    Pattern[] pattern = patternlist.toArray(new Pattern[] {});

    HsErrFileUtils.checkHsErrFileContent(hs_err_file, pattern, false, true);

    System.out.println("OK.");

  }

}