Java Code Examples for jdk.jfr.internal.Utils#checkAccessFlightRecorder()

/**
 * Returns the Flight Recorder for the platform.
 *
 * @return a Flight Recorder instance, not {@code null}
 *
 * @throws IllegalStateException if the platform Flight Recorder couldn't be
 *         created (for example, if the file repository can't be created or
 *         accessed)
 *
 * @throws SecurityException if a security manager exists and the caller does
 *         not have {@code FlightRecorderPermission("accessFlightRecorder")}
 */
public static FlightRecorder getFlightRecorder() throws IllegalStateException, SecurityException {
    synchronized (PlatformRecorder.class) {
        Utils.checkAccessFlightRecorder();
        JVMSupport.ensureWithIllegalStateException();
        if (platformRecorder == null) {
            try {
                platformRecorder = new FlightRecorder(new PlatformRecorder());
            } catch (IllegalStateException ise) {
                throw ise;
            } catch (Exception e) {
                throw new IllegalStateException("Can't create Flight Recorder. " + e.getMessage(), e);
            }
            // Must be in synchronized block to prevent instance leaking out
            // before initialization is done
            initialized = true;
            Logger.log(JFR, INFO, "Flight Recorder initialized");
            Logger.log(JFR, DEBUG, "maxchunksize: " + Options.getMaxChunkSize()+ " bytes");
            Logger.log(JFR, DEBUG, "memorysize: " + Options.getMemorySize()+ " bytes");
            Logger.log(JFR, DEBUG, "globalbuffersize: " + Options.getGlobalBufferSize()+ " bytes");
            Logger.log(JFR, DEBUG, "globalbuffercount: " + Options.getGlobalBufferCount());
            Logger.log(JFR, DEBUG, "dumppath: " + Options.getDumpPath());
            Logger.log(JFR, DEBUG, "samplethreads: " + Options.getSampleThreads());
            Logger.log(JFR, DEBUG, "stackdepth: " + Options.getStackDepth());
            Logger.log(JFR, DEBUG, "threadbuffersize: " + Options.getThreadBufferSize());
            Logger.log(JFR, LogLevel.INFO, "Created repository " + Repository.getRepository().getRepositoryPath().toString());
            PlatformRecorder.notifyRecorderInitialized(platformRecorder);
        }
    }
    return platformRecorder;
}
 

public static List<EventType> getEventTypes() {
    // would normally be checked when a Flight Recorder instance is created
    Utils.checkAccessFlightRecorder();
    if (JVMSupport.isNotAvailable()) {
        return new ArrayList<>();
    }
    JDKEvents.initialize(); // make sure JDK events are available
    return Collections.unmodifiableList(MetadataRepository.getInstance().getRegisteredEventTypes());
}
 

/**
 * Returns the Flight Recorder for the platform.
 *
 * @return a Flight Recorder instance, not {@code null}
 *
 * @throws IllegalStateException if Flight Recorder can't be created (for
 *         example, if the Java Virtual Machine (JVM) lacks Flight Recorder
 *         support, or if the file repository can't be created or accessed)
 *
 * @throws SecurityException if a security manager exists and the caller does
 *         not have {@code FlightRecorderPermission("accessFlightRecorder")}
 */
public static FlightRecorder getFlightRecorder() throws IllegalStateException, SecurityException {
    synchronized (PlatformRecorder.class) {
        Utils.checkAccessFlightRecorder();
        JVMSupport.ensureWithIllegalStateException();
        if (platformRecorder == null) {
            try {
                platformRecorder = new FlightRecorder(new PlatformRecorder());
            } catch (IllegalStateException ise) {
                throw ise;
            } catch (Exception e) {
                throw new IllegalStateException("Can't create Flight Recorder. " + e.getMessage(), e);
            }
            // Must be in synchronized block to prevent instance leaking out
            // before initialization is done
            initialized = true;
            Logger.log(JFR, INFO, "Flight Recorder initialized");
            Logger.log(JFR, DEBUG, "maxchunksize: " + Options.getMaxChunkSize()+ " bytes");
            Logger.log(JFR, DEBUG, "memorysize: " + Options.getMemorySize()+ " bytes");
            Logger.log(JFR, DEBUG, "globalbuffersize: " + Options.getGlobalBufferSize()+ " bytes");
            Logger.log(JFR, DEBUG, "globalbuffercount: " + Options.getGlobalBufferCount());
            Logger.log(JFR, DEBUG, "dumppath: " + Options.getDumpPath());
            Logger.log(JFR, DEBUG, "samplethreads: " + Options.getSampleThreads());
            Logger.log(JFR, DEBUG, "stackdepth: " + Options.getStackDepth());
            Logger.log(JFR, DEBUG, "threadbuffersize: " + Options.getThreadBufferSize());
            Logger.log(JFR, LogLevel.INFO, "Created repository " + Repository.getRepository().getRepositoryPath().toString());
            PlatformRecorder.notifyRecorderInitialized(platformRecorder);
        }
    }
    return platformRecorder;
}
 

public static List<EventType> getEventTypes() {
    // would normally be checked when a Flight Recorder instance is created
    Utils.checkAccessFlightRecorder();
    if (JVMSupport.isNotAvailable()) {
        return new ArrayList<>();
    }
    JDKEvents.initialize(); // make sure JDK events are available
    return Collections.unmodifiableList(MetadataRepository.getInstance().getRegisteredEventTypes());
}
 

/**
 * Returns the Flight Recorder for the platform.
 *
 * @return a Flight Recorder instance, not {@code null}
 *
 * @throws IllegalStateException if Flight Recorder can't be created (for
 *         example, if the Java Virtual Machine (JVM) lacks Flight Recorder
 *         support, or if the file repository can't be created or accessed)
 *
 * @throws SecurityException if a security manager exists and the caller does
 *         not have {@code FlightRecorderPermission("accessFlightRecorder")}
 */
public static FlightRecorder getFlightRecorder() throws IllegalStateException, SecurityException {
    synchronized (PlatformRecorder.class) {
        Utils.checkAccessFlightRecorder();
        JVMSupport.ensureWithIllegalStateException();
        if (platformRecorder == null) {
            try {
                platformRecorder = new FlightRecorder(new PlatformRecorder());
            } catch (IllegalStateException ise) {
                throw ise;
            } catch (Exception e) {
                throw new IllegalStateException("Can't create Flight Recorder. " + e.getMessage(), e);
            }
            // Must be in synchronized block to prevent instance leaking out
            // before initialization is done
            initialized = true;
            Logger.log(JFR, INFO, "Flight Recorder initialized");
            Logger.log(JFR, DEBUG, "maxchunksize: " + Options.getMaxChunkSize()+ " bytes");
            Logger.log(JFR, DEBUG, "memorysize: " + Options.getMemorySize()+ " bytes");
            Logger.log(JFR, DEBUG, "globalbuffersize: " + Options.getGlobalBufferSize()+ " bytes");
            Logger.log(JFR, DEBUG, "globalbuffercount: " + Options.getGlobalBufferCount());
            Logger.log(JFR, DEBUG, "dumppath: " + Options.getDumpPath());
            Logger.log(JFR, DEBUG, "samplethreads: " + Options.getSampleThreads());
            Logger.log(JFR, DEBUG, "stackdepth: " + Options.getStackDepth());
            Logger.log(JFR, DEBUG, "threadbuffersize: " + Options.getThreadBufferSize());
            Logger.log(JFR, LogLevel.INFO, "Created repository " + Repository.getRepository().getRepositoryPath().toString());
            PlatformRecorder.notifyRecorderInitialized(platformRecorder);
        }
    }
    return platformRecorder;
}
 

public static List<EventType> getEventTypes() {
    // would normally be checked when a Flight Recorder instance is created
    Utils.checkAccessFlightRecorder();
    if (JVMSupport.isNotAvailable()) {
        return new ArrayList<>();
    }
    JDKEvents.initialize(); // make sure JDK events are available
    return Collections.unmodifiableList(MetadataRepository.getInstance().getRegisteredEventTypes());
}
 

/**
 * Adds a recorder listener and captures the {@code AccessControlContext} to
 * use when invoking the listener.
 * <p>
 * If Flight Recorder is already initialized when the listener is added, the the method
 * {@link FlightRecorderListener#recorderInitialized(FlightRecorder)} method is
 * invoked before returning from this method.
 *
 * @param changeListener the listener to add, not {@code null}
 *
 * @throws SecurityException if a security manager exists and the caller
 *         does not have
 *         {@code FlightRecorderPermission("accessFlightRecorder")}
 */
public static void addListener(FlightRecorderListener changeListener) {
    Objects.requireNonNull(changeListener);
    Utils.checkAccessFlightRecorder();
    if (JVMSupport.isNotAvailable()) {
        return;
    }
    PlatformRecorder.addListener(changeListener);
}
 

/**
 * Removes a recorder listener.
 * <p>
 * If the same listener is added multiple times, only one instance is
 * removed.
 *
 * @param changeListener listener to remove, not {@code null}
 *
 * @throws SecurityException if a security manager exists and the caller
 *         does not have
 *         {@code FlightRecorderPermission("accessFlightRecorder")}
 *
 * @return {@code true}, if the listener could be removed, {@code false}
 *         otherwise
 */
public static boolean removeListener(FlightRecorderListener changeListener) {
    Objects.requireNonNull(changeListener);
    Utils.checkAccessFlightRecorder();
    if (JVMSupport.isNotAvailable()) {
        return false;
    }

    return PlatformRecorder.removeListener(changeListener);
}
 

/**
 * Adds a recorder listener and captures the {@code AccessControlContext} to
 * use when invoking the listener.
 * <p>
 * If Flight Recorder is already initialized when the listener is added, then the method
 * {@link FlightRecorderListener#recorderInitialized(FlightRecorder)} method is
 * invoked before returning from this method.
 *
 * @param changeListener the listener to add, not {@code null}
 *
 * @throws SecurityException if a security manager exists and the caller
 *         does not have
 *         {@code FlightRecorderPermission("accessFlightRecorder")}
 */
public static void addListener(FlightRecorderListener changeListener) {
    Objects.requireNonNull(changeListener);
    Utils.checkAccessFlightRecorder();
    if (JVMSupport.isNotAvailable()) {
        return;
    }
    PlatformRecorder.addListener(changeListener);
}
 

/**
 * Removes a recorder listener.
 * <p>
 * If the same listener is added multiple times, only one instance is
 * removed.
 *
 * @param changeListener listener to remove, not {@code null}
 *
 * @throws SecurityException if a security manager exists and the caller
 *         does not have
 *         {@code FlightRecorderPermission("accessFlightRecorder")}
 *
 * @return {@code true}, if the listener could be removed, {@code false}
 *         otherwise
 */
public static boolean removeListener(FlightRecorderListener changeListener) {
    Objects.requireNonNull(changeListener);
    Utils.checkAccessFlightRecorder();
    if (JVMSupport.isNotAvailable()) {
        return false;
    }

    return PlatformRecorder.removeListener(changeListener);
}
 

/**
 * Adds a recorder listener and captures the {@code AccessControlContext} to
 * use when invoking the listener.
 * <p>
 * If Flight Recorder is already initialized when the listener is added, then the method
 * {@link FlightRecorderListener#recorderInitialized(FlightRecorder)} method is
 * invoked before returning from this method.
 *
 * @param changeListener the listener to add, not {@code null}
 *
 * @throws SecurityException if a security manager exists and the caller
 *         does not have
 *         {@code FlightRecorderPermission("accessFlightRecorder")}
 */
public static void addListener(FlightRecorderListener changeListener) {
    Objects.requireNonNull(changeListener);
    Utils.checkAccessFlightRecorder();
    if (JVMSupport.isNotAvailable()) {
        return;
    }
    PlatformRecorder.addListener(changeListener);
}
 

/**
 * Removes a recorder listener.
 * <p>
 * If the same listener is added multiple times, only one instance is
 * removed.
 *
 * @param changeListener listener to remove, not {@code null}
 *
 * @throws SecurityException if a security manager exists and the caller
 *         does not have
 *         {@code FlightRecorderPermission("accessFlightRecorder")}
 *
 * @return {@code true}, if the listener could be removed, {@code false}
 *         otherwise
 */
public static boolean removeListener(FlightRecorderListener changeListener) {
    Objects.requireNonNull(changeListener);
    Utils.checkAccessFlightRecorder();
    if (JVMSupport.isNotAvailable()) {
        return false;
    }

    return PlatformRecorder.removeListener(changeListener);
}