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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

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/**

 * @test

 * @bug 8174994

 * @summary Test the clhsdb commands 'printmdo', 'printall' on a CDS enabled corefile.

 * @requires vm.cds

 * @requires vm.hasSA

 * @requires os.family != "windows"

 * @requires vm.flavor == "server"

 * @library /test/lib

 * @modules java.base/jdk.internal.misc

 * @run main/othervm/timeout=2400 -Xmx1g ClhsdbCDSCore

 */

import java.util.List;

import java.util.ArrayList;

import java.util.Arrays;

import java.util.Map;

import java.util.HashMap;

import jdk.test.lib.process.ProcessTools;

import jdk.test.lib.Platform;

import jdk.test.lib.process.OutputAnalyzer;

import jdk.test.lib.cds.CDSTestUtils;

import jdk.test.lib.cds.CDSOptions;

import java.io.IOException;

import java.io.File;

import java.nio.file.Files;

import java.nio.file.Path;

import java.nio.file.Paths;

import jdk.test.lib.Asserts;

import java.util.regex.Pattern;

import java.util.regex.Matcher;

import jdk.internal.misc.Unsafe;

import java.util.Scanner;

class CrashApp {

    public static void main(String[] args) {

        Unsafe.getUnsafe().putInt(0L, 0);

    }

}

public class ClhsdbCDSCore {

    private static final String TEST_CDS_CORE_FILE_NAME = "cds_core_file";

    private static final String LOCATIONS_STRING = "location: ";

    private static final String RUN_SHELL_NO_LIMIT = "ulimit -c unlimited && ";

    private static final String SHARED_ARCHIVE_NAME = "ArchiveForClhsdbCDSCore.jsa";

    private static final String CORE_PATTERN_FILE_NAME = "/proc/sys/kernel/core_pattern";

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

        System.out.println("Starting ClhsdbCDSCore test");

        cleanup();

        try {

            CDSOptions opts = (new CDSOptions()).setArchiveName(SHARED_ARCHIVE_NAME);

            CDSTestUtils.createArchiveAndCheck(opts);

            String[] jArgs = {

                "-XX:+UnlockDiagnosticVMOptions",

                "-XX:SharedArchiveFile=" + SHARED_ARCHIVE_NAME,

                "-XX:+CreateCoredumpOnCrash",

                "-Xshare:auto",

                "-XX:+ProfileInterpreter",

                "--add-exports=java.base/jdk.internal.misc=ALL-UNNAMED",

                CrashApp.class.getName()

            };

            OutputAnalyzer crashOut;

            try {

               List<String> options = new ArrayList<>();

               options.addAll(Arrays.asList(jArgs));

               crashOut =

                   ProcessTools.executeProcess(getTestJavaCommandlineWithPrefix(

                   RUN_SHELL_NO_LIMIT, options.toArray(new String[0])));

            } catch (Throwable t) {

               throw new Error("Can't execute the java cds process.", t);

            }

            System.out.println(crashOut.getOutput());

            String crashOutputString = crashOut.getOutput();

            String coreFileLocation = getCoreFileLocation(crashOutputString);

            if (coreFileLocation == null) {

                if (Platform.isOSX()) {

                    File coresDir = new File("/cores");

                    if (!coresDir.isDirectory() || !coresDir.canWrite()) {

                        throw new Error("cores is not a directory or does not have write permissions");

                    }

                } else if (Platform.isLinux()) {

                    // Check if a crash report tool is installed.

                    File corePatternFile = new File(CORE_PATTERN_FILE_NAME);

                    Scanner scanner = new Scanner(corePatternFile);

                    while (scanner.hasNextLine()) {

                        String line = scanner.nextLine();

                        line = line.trim();

                        System.out.println(line);

                        if (line.startsWith("|")) {

                            System.out.println(

                                "\nThis system uses a crash report tool ($cat /proc/sys/kernel/core_pattern).\n" +

                                "Core files might not be generated. Please reset /proc/sys/kernel/core_pattern\n" +

                                "to enable core generation. Skipping this test.");

                            cleanup();

                        }

                    }

                }

                throw new Error("Couldn't find core file location in: '" + crashOutputString + "'");

            }

            try {

                Asserts.assertGT(new File(coreFileLocation).length(), 0L, "Unexpected core size");

                Files.move(Paths.get(coreFileLocation), Paths.get(TEST_CDS_CORE_FILE_NAME));

            } catch (IOException ioe) {

                throw new Error("Can't move core file: " + ioe, ioe);

            }

            ClhsdbLauncher test = new ClhsdbLauncher();

            // Ensure that UseSharedSpaces is turned on.

            List<String> cmds = List.of("flags UseSharedSpaces");

            String useSharedSpacesOutput = test.runOnCore(TEST_CDS_CORE_FILE_NAME, cmds,

                                                          null, null);

            if (useSharedSpacesOutput == null) {

                // Output could be null due to attach permission issues.

                cleanup();

            }

            if (!useSharedSpacesOutput.contains("true")) {

                // CDS archive is not mapped. Skip the rest of the test.

                cleanup();

            }

            cmds = List.of("printmdo -a", "printall");

            Map<String, List<String>> expStrMap = new HashMap<>();

            Map<String, List<String>> unExpStrMap = new HashMap<>();

            expStrMap.put("printmdo -a", List.of(

                "CounterData",

                "BranchData"));

            unExpStrMap.put("printmdo -a", List.of(

                "No suitable match for type of address"));

            expStrMap.put("printall", List.of(

                "aload_0",

                "_nofast_aload_0",

                "_nofast_getfield",

                "_nofast_putfield",

                "Constant Pool of",

                "public static void main(java.lang.String[])",

                "Bytecode",

                "invokevirtual",

                "checkcast",

                "Exception Table",

                "invokedynamic"));

            unExpStrMap.put("printall", List.of(

                "sun.jvm.hotspot.types.WrongTypeException",

                "illegal code",

                "Failure occurred at bci",

                "No suitable match for type of address"));

            test.runOnCore(TEST_CDS_CORE_FILE_NAME, cmds, expStrMap, unExpStrMap);

        } catch (Exception ex) {

            throw new RuntimeException("Test ERROR " + ex, ex);

        }

        cleanup();

        System.out.println("Test PASSED");

    }

    // lets search for a few possible locations using process output and return existing location

    private static String getCoreFileLocation(String crashOutputString) {

        Asserts.assertTrue(crashOutputString.contains(LOCATIONS_STRING),

            "Output doesn't contain the location of core file.");

        String stringWithLocation = Arrays.stream(crashOutputString.split("\\r?\\n"))

            .filter(str -> str.contains(LOCATIONS_STRING))

            .findFirst()

            .get();

        stringWithLocation = stringWithLocation.substring(stringWithLocation

            .indexOf(LOCATIONS_STRING) + LOCATIONS_STRING.length());

        String coreWithPid;

        if (stringWithLocation.contains("or ")) {

            Matcher m = Pattern.compile("or.* ([^ ]+[^\\)])\\)?").matcher(stringWithLocation);

            if (!m.find()) {

                throw new Error("Couldn't find path to core inside location string");

            }

            coreWithPid = m.group(1);

        } else {

            coreWithPid = stringWithLocation.trim();

        }

        if (new File(coreWithPid).exists()) {

            return coreWithPid;

        }

        String justCore = Paths.get("core").toString();

        if (new File(justCore).exists()) {

            return justCore;

        }

        Path coreWithPidPath = Paths.get(coreWithPid);

        String justFile = coreWithPidPath.getFileName().toString();

        if (new File(justFile).exists()) {

            return justFile;

        }

        Path parent = coreWithPidPath.getParent();

        if (parent != null) {

            String coreWithoutPid = parent.resolve("core").toString();

            if (new File(coreWithoutPid).exists()) {

                return coreWithoutPid;

            }

        }

        return null;

    }

    private static String[] getTestJavaCommandlineWithPrefix(String prefix, String... args) {

        try {

            String cmd = ProcessTools.getCommandLine(ProcessTools.createJavaProcessBuilder(true, args));

            return new String[]{"sh", "-c", prefix + cmd};

        } catch (Throwable t) {

            throw new Error("Can't create process builder: " + t, t);

        }

    }

    private static void cleanup() {

        remove(TEST_CDS_CORE_FILE_NAME);

        remove(SHARED_ARCHIVE_NAME);

    }

    private static void remove(String item) {

        File toDelete = new File(item);

        toDelete.delete();

    }

}