jdk.jfr.internal.PrivateAccess Java Examples

private void printField(int commentIndex, ValueDescriptor v) throws IOException {
    println();
    printAnnotations(commentIndex, v.getAnnotationElements());
    printIndent();
    Type vType = PrivateAccess.getInstance().getType(v);
    if (Type.SUPER_TYPE_SETTING.equals(vType.getSuperType())) {
        print("static ");
    }
    print(makeSimpleType(v.getTypeName()));
    if (v.isArray()) {
        print("[]");
    }
    print(" ");
    print(v.getName());
    print(";");
    printCommentRef(commentIndex, v.getTypeId());
}
 

/**
 * Execute JFR.dump.
 *
 * @param recordingText name or id of the recording to dump, or
 *        <code>null</code>
 *
 * @param textPath file path where recording should be written.
 *
 * @return result output
 *
 * @throws DCmdException if the dump could not be completed
 */
public String execute(String recordingText, String textPath,  Boolean pathToGcRoots) throws DCmdException {
    if (textPath == null) {
        throw new DCmdException("Failed to dump %s, missing filename.", recordingText);
    }
    Recording recording = findRecording(recordingText);
    try {
        SafePath dumpFile = resolvePath(textPath, "Failed to dump %s");
        // create file for JVM
        Utils.touch(dumpFile.toPath());
        PlatformRecording r = PrivateAccess.getInstance().getPlatformRecording(recording);
        WriteableUserPath wup = new WriteableUserPath(dumpFile.toPath());

        Map<String, String> overlay = new HashMap<>();
        Utils.updateSettingPathToGcRoots(overlay, pathToGcRoots);

        r.copyTo(wup, "Dumped by user", overlay);
        reportOperationComplete("Dumped", recording, dumpFile);
    } catch (IOException | InvalidPathException e) {
        throw new DCmdException("Failed to dump %s. Could not copy recording for dump. %s", recordingText, e.getMessage());
    }
    return getResult();
}
 

private void printField(int commentIndex, ValueDescriptor v, boolean first) {
    if (!first) {
        println();
    }
    printAnnotations(commentIndex, v.getAnnotationElements());
    printIndent();
    Type vType = PrivateAccess.getInstance().getType(v);
    if (Type.SUPER_TYPE_SETTING.equals(vType.getSuperType())) {
        print("static ");
    }
    print(makeSimpleType(v.getTypeName()));
    if (v.isArray()) {
        print("[]");
    }
    print(" ");
    print(v.getName());
    print(";");
    printCommentRef(commentIndex, v.getTypeId());
}
 

private void printField(int commentIndex, ValueDescriptor v, boolean first) {
    if (!first) {
        println();
    }
    printAnnotations(commentIndex, v.getAnnotationElements());
    printIndent();
    Type vType = PrivateAccess.getInstance().getType(v);
    if (Type.SUPER_TYPE_SETTING.equals(vType.getSuperType())) {
        print("static ");
    }
    print(makeSimpleType(v.getTypeName()));
    if (v.isArray()) {
        print("[]");
    }
    print(" ");
    print(v.getName());
    print(";");
    printCommentRef(commentIndex, v.getTypeId());
}
 

protected EventHandler(boolean registered, EventType eventType, EventControl eventControl) {
    if (System.getSecurityManager() != null) {
        // Do not allow user subclasses when security is enforced.
        if (EventHandler.class.getClassLoader() != this.getClass().getClassLoader()) {
            throw new SecurityException("Illegal subclass");
        }
    }
    this.eventType = eventType;
    this.platformEventType = PrivateAccess.getInstance().getPlatformEventType(eventType);
    this.eventControl = eventControl;
    platformEventType.setRegistered(registered);
}
 

private PlatformRecording newSnapShot(PlatformRecorder recorder, Recording recording, Boolean pathToGcRoots) throws DCmdException, IOException {
    if (recording == null) {
        // Operate on all recordings
        PlatformRecording snapshot = recorder.newTemporaryRecording();
        recorder.fillWithRecordedData(snapshot, pathToGcRoots);
        return snapshot;
    }

    PlatformRecording pr = PrivateAccess.getInstance().getPlatformRecording(recording);
    return pr.newSnapshotClone("Dumped by user", pathToGcRoots);
}
 

protected EventHandler(boolean registered, EventType eventType, EventControl eventControl) {
    if (System.getSecurityManager() != null) {
        // Do not allow user subclasses when security is enforced.
        if (EventHandler.class.getClassLoader() != this.getClass().getClassLoader()) {
            throw new SecurityException("Illegal subclass");
        }
    }
    this.eventType = eventType;
    this.platformEventType = PrivateAccess.getInstance().getPlatformEventType(eventType);
    this.eventControl = eventControl;
    platformEventType.setRegistered(registered);
}
 

public static Configuration createConfiguration(String name, String content) throws IOException, ParseException {
    try {
        JFCParserHandler ch = new JFCParserHandler();
        parseXML(content, ch);
        return PrivateAccess.getInstance().newConfiguration(name, ch.label, ch.description, ch.provider, ch.settings, content);
    } catch (IllegalArgumentException iae) {
        throw new ParseException(iae.getMessage(), -1);
    } catch (SAXException e) {
        ParseException pe =  new ParseException("Error reading JFC file. " + e.getMessage(), -1);
        pe.initCause(e);
        throw pe;
    }
}
 

private Parser createParser(ValueDescriptor v) throws IOException {
    boolean constantPool = PrivateAccess.getInstance().isConstantPool(v);
    if (v.isArray()) {
        Type valueType = PrivateAccess.getInstance().getType(v);
        ValueDescriptor element = PrivateAccess.getInstance().newValueDescriptor(v.getName(), valueType, v.getAnnotationElements(), 0, constantPool, null);
        return new ArrayParser(createParser(element));
    }
    long id = v.getTypeId();
    Type type = types.get(id);
    if (type == null) {
        throw new IOException("Type '" + v.getTypeName() + "' is not defined");
    }
    if (constantPool) {
        ConstantMap pool = constantPools.get(id);
        if (pool == null) {
            pool = new ConstantMap(ObjectFactory.create(type, timeConverter), type.getName());
            constantPools.put(id, pool);
        }
        return new ConstantMapValueParser(pool);
    }
    Parser parser = parsers.get(id);
    if (parser == null) {
        if (!v.getFields().isEmpty()) {
            return createCompositeParser(type);
        } else {
            return registerParserType(type, createPrimitiveParser(type));
        }
    }
    return parser;
}
 

private PlatformRecording newSnapShot(PlatformRecorder recorder, Recording recording, Boolean pathToGcRoots) throws DCmdException, IOException {
    if (recording == null) {
        // Operate on all recordings
        PlatformRecording snapshot = recorder.newTemporaryRecording();
        recorder.fillWithRecordedData(snapshot, pathToGcRoots);
        return snapshot;
    }

    PlatformRecording pr = PrivateAccess.getInstance().getPlatformRecording(recording);
    return pr.newSnapshotClone("Dumped by user", pathToGcRoots);
}
 

private Parser createParser(ValueDescriptor v) throws IOException {
    boolean constantPool = PrivateAccess.getInstance().isConstantPool(v);
    if (v.isArray()) {
        Type valueType = PrivateAccess.getInstance().getType(v);
        ValueDescriptor element = PrivateAccess.getInstance().newValueDescriptor(v.getName(), valueType, v.getAnnotationElements(), 0, constantPool, null);
        return new ArrayParser(createParser(element));
    }
    long id = v.getTypeId();
    Type type = types.get(id);
    if (type == null) {
        throw new IOException("Type '" + v.getTypeName() + "' is not defined");
    }
    if (constantPool) {
        ConstantMap pool = constantPools.get(id);
        if (pool == null) {
            pool = new ConstantMap(ObjectFactory.create(type, timeConverter), type.getName());
            constantPools.put(id, pool);
        }
        return new ConstantMapValueParser(pool);
    }
    Parser parser = parsers.get(id);
    if (parser == null) {
        if (!v.getFields().isEmpty()) {
            return createCompositeParser(type);
        } else {
            return registerParserType(type, createPrimitiveParser(type));
        }
    }
    return parser;
}
 

public static Configuration createConfiguration(String name, String content) throws IOException, ParseException {
    try {
        JFCParserHandler ch = new JFCParserHandler();
        parseXML(content, ch);
        return PrivateAccess.getInstance().newConfiguration(name, ch.label, ch.description, ch.provider, ch.settings, content);
    } catch (IllegalArgumentException iae) {
        throw new ParseException(iae.getMessage(), -1);
    } catch (SAXException e) {
        ParseException pe =  new ParseException("Error reading JFC file. " + e.getMessage(), -1);
        pe.initCause(e);
        throw pe;
    }
}
 

private Parser createParser(ValueDescriptor v) throws IOException {
    boolean constantPool = PrivateAccess.getInstance().isConstantPool(v);
    if (v.isArray()) {
        Type valueType = PrivateAccess.getInstance().getType(v);
        ValueDescriptor element = PrivateAccess.getInstance().newValueDescriptor(v.getName(), valueType, v.getAnnotationElements(), 0, constantPool, null);
        return new ArrayParser(createParser(element));
    }
    long id = v.getTypeId();
    Type type = types.get(id);
    if (type == null) {
        throw new IOException("Type '" + v.getTypeName() + "' is not defined");
    }
    if (constantPool) {
        ConstantMap pool = constantPools.get(id);
        if (pool == null) {
            pool = new ConstantMap(ObjectFactory.create(type, timeConverter), type.getName());
            constantPools.put(id, pool);
        }
        return new ConstantMapValueParser(pool);
    }
    Parser parser = parsers.get(id);
    if (parser == null) {
        if (!v.getFields().isEmpty()) {
            return createCompositeParser(type);
        } else {
            return registerParserType(type, createPrimitiveParser(type));
        }
    }
    return parser;
}
 

public static Configuration createConfiguration(String name, String content) throws IOException, ParseException {
    try {
        JFCParserHandler ch = new JFCParserHandler();
        parseXML(content, ch);
        return PrivateAccess.getInstance().newConfiguration(name, ch.label, ch.description, ch.provider, ch.settings, content);
    } catch (IllegalArgumentException iae) {
        throw new ParseException(iae.getMessage(), -1);
    } catch (SAXException e) {
        ParseException pe =  new ParseException("Error reading JFC file. " + e.getMessage(), -1);
        pe.initCause(e);
        throw pe;
    }
}
 

/**
 * Execute JFR.dump.
 *
 * @param name name or id of the recording to dump, or <code>null</code> to dump everything
 *
 * @param filename file path where recording should be written, not null
 * @param maxAge how far back in time to dump, may be null
 * @param maxSize how far back in size to dump data from, may be null
 * @param begin point in time to dump data from, may be null
 * @param end point in time to dump data to, may be null
 * @param pathToGcRoots if Java heap should be swept for reference chains
 *
 * @return result output
 *
 * @throws DCmdException if the dump could not be completed
 */
public String execute(String name, String filename, Long maxAge, Long maxSize, String begin, String end, Boolean pathToGcRoots) throws DCmdException {
    if (LogTag.JFR_DCMD.shouldLog(LogLevel.DEBUG)) {
        Logger.log(LogTag.JFR_DCMD, LogLevel.DEBUG,
                "Executing DCmdDump: name=" + name +
                ", filename=" + filename +
                ", maxage=" + maxAge +
                ", maxsize=" + maxSize +
                ", begin=" + begin +
                ", end" + end +
                ", path-to-gc-roots=" + pathToGcRoots);
    }

    if (FlightRecorder.getFlightRecorder().getRecordings().isEmpty()) {
        throw new DCmdException("No recordings to dump from. Use JFR.start to start a recording.");
    }

    if (maxAge != null) {
        if (end != null || begin != null) {
            throw new DCmdException("Dump failed, maxage can't be combined with begin or end.");
        }

        if (maxAge < 0) {
            throw new DCmdException("Dump failed, maxage can't be negative.");
        }
        if (maxAge == 0) {
            maxAge = Long.MAX_VALUE / 2; // a high value that won't overflow
        }
    }

    if (maxSize!= null) {
        if (maxSize < 0) {
            throw new DCmdException("Dump failed, maxsize can't be negative.");
        }
        if (maxSize == 0) {
            maxSize = Long.MAX_VALUE / 2; // a high value that won't overflow
        }
    }

    Instant beginTime = parseTime(begin, "begin");
    Instant endTime = parseTime(end, "end");

    if (beginTime != null && endTime != null) {
        if (endTime.isBefore(beginTime)) {
            throw new DCmdException("Dump failed, begin must preceed end.");
        }
    }

    Duration duration = null;
    if (maxAge != null) {
        duration = Duration.ofNanos(maxAge);
        beginTime = Instant.now().minus(duration);
    }
    Recording recording = null;
    if (name != null) {
        recording = findRecording(name);
    }
    PlatformRecorder recorder = PrivateAccess.getInstance().getPlatformRecorder();
    synchronized (recorder) {
        dump(recorder, recording, name, filename, maxSize, pathToGcRoots, beginTime, endTime);
    }
    return getResult();
}
 

EventHandler(boolean registered, EventType eventType, EventControl eventControl) {
    this.eventType = eventType;
    this.platformEventType = PrivateAccess.getInstance().getPlatformEventType(eventType);
    this.eventControl = eventControl;
    platformEventType.setRegistered(registered);
}
 

/**
 * Execute JFR.dump.
 *
 * @param name name or id of the recording to dump, or <code>null</code> to dump everything
 *
 * @param filename file path where recording should be written, not null
 * @param maxAge how far back in time to dump, may be null
 * @param maxSize how far back in size to dump data from, may be null
 * @param begin point in time to dump data from, may be null
 * @param end point in time to dump data to, may be null
 * @param pathToGcRoots if Java heap should be swept for reference chains
 *
 * @return result output
 *
 * @throws DCmdException if the dump could not be completed
 */
public String execute(String name, String filename, Long maxAge, Long maxSize, String begin, String end, Boolean pathToGcRoots) throws DCmdException {
    if (Logger.shouldLog(LogTag.JFR_DCMD, LogLevel.DEBUG)) {
        Logger.log(LogTag.JFR_DCMD, LogLevel.DEBUG,
                "Executing DCmdDump: name=" + name +
                ", filename=" + filename +
                ", maxage=" + maxAge +
                ", maxsize=" + maxSize +
                ", begin=" + begin +
                ", end" + end +
                ", path-to-gc-roots=" + pathToGcRoots);
    }

    if (FlightRecorder.getFlightRecorder().getRecordings().isEmpty()) {
        throw new DCmdException("No recordings to dump from. Use JFR.start to start a recording.");
    }

    if (maxAge != null) {
        if (end != null || begin != null) {
            throw new DCmdException("Dump failed, maxage can't be combined with begin or end.");
        }

        if (maxAge < 0) {
            throw new DCmdException("Dump failed, maxage can't be negative.");
        }
        if (maxAge == 0) {
            maxAge = Long.MAX_VALUE / 2; // a high value that won't overflow
        }
    }

    if (maxSize!= null) {
        if (maxSize < 0) {
            throw new DCmdException("Dump failed, maxsize can't be negative.");
        }
        if (maxSize == 0) {
            maxSize = Long.MAX_VALUE / 2; // a high value that won't overflow
        }
    }

    Instant beginTime = parseTime(begin, "begin");
    Instant endTime = parseTime(end, "end");

    if (beginTime != null && endTime != null) {
        if (endTime.isBefore(beginTime)) {
            throw new DCmdException("Dump failed, begin must preceed end.");
        }
    }

    Duration duration = null;
    if (maxAge != null) {
        duration = Duration.ofNanos(maxAge);
        beginTime = Instant.now().minus(duration);
    }
    Recording recording = null;
    if (name != null) {
        recording = findRecording(name);
    }
    PlatformRecorder recorder = PrivateAccess.getInstance().getPlatformRecorder();
    synchronized (recorder) {
        dump(recorder, recording, name, filename, maxSize, pathToGcRoots, beginTime, endTime);
    }
    return getResult();
}