JDK 11 jdk.management.jfr.jmod - Management JFR Module
JDK 11 jdk.management.jfr.jmod is the JMOD file for JDK 11 Management Jfr module.
JDK 11 Management JFR module compiled class files are stored in \fyicenter\jdk-11.0.1\jmods\jdk.management.jfr.jmod.
JDK 11 Management JFR module compiled class files are also linked and stored in the \fyicenter\jdk-11.0.1\lib\modules JImage file.
JDK 11 Management JFR module source code files are stored in \fyicenter\jdk-11.0.1\lib\src.zip\jdk.management.jfr.
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⏎ jdk/management/jfr/FlightRecorderMXBean.java
/*
* Copyright (c) 2016, 2018, Oracle and/or its affiliates. All rights reserved.
* ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
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package jdk.management.jfr;
import java.io.IOException;
import java.lang.management.PlatformManagedObject;
import java.time.Instant;
import java.util.List;
import java.util.Map;
import jdk.jfr.Configuration;
import jdk.jfr.EventType;
import jdk.jfr.Recording;
/**
* Management interface for controlling Flight Recorder.
* <p>
* The object name for identifying the MXBean in the platform MBean
* server is: <blockquote> {@code jdk.management.jfr:type=FlightRecorder} </blockquote>
* <p>
* Flight Recorder can be configured in the following ways:
* <ul>
* <li><b>Recording options</b><br>
* Specify how long a recording should last, and where and when data
* should be dumped.</li>
* <li><b>Settings</b><br>
* Specify which events should be enabled and what kind information each
* event should capture.</li>
* <li><b>Configurations</b><br>
* Predefined sets of settings, typically derived from a settings file,
* that specify the configuration of multiple events simultaneously.</li>
* </ul>
* <p>
* See the package {@code jdk.jfr} documentation for descriptions of the settings
* syntax and the {@link ConfigurationInfo} class documentation for configuration information.
*
* <h3>Recording options</h3>
* <p>
* The following table shows the options names to use with {@link #setRecordingOptions(long, Map)}
* and {@link #getRecordingOptions(long)}.
*
* <table class="striped">
* <caption>Recording options</caption>
* <thead>
* <tr>
* <th scope="col">Name</th>
* <th scope="col">Descripion</th>
* <th scope="col">Default value</th>
* <th scope="col">Format</th>
* <th scope="col">Example values</th>
* </tr>
* </thead>
* <tbody>
* <tr>
* <th scope="row">{@code name}</th>
* <td>Sets a human-readable recording name</td>
* <td>String representation of the recording id</td>
* <td>{@code String}</td>
* <td>{@code "My Recording"}, <br>
* {@code "profiling"}</td>
* </tr>
* <tr>
* <th scope="row">{@code maxAge}</th>
* <td>Specify the length of time that the data is kept in the disk repository until the
* oldest data may be deleted. Only works if {@code disk=true}, otherwise
* this parameter is ignored.</td>
* <td>{@code "0"} (no limit)</td>
* <td>{@code "0"} if no limit is imposed, otherwise a string
* representation of a positive {@code Long} value followed by an empty space
* and one of the following units,<br>
* <br>
* {@code "ns"} (nanoseconds)<br>
* {@code "us"} (microseconds)<br>
* {@code "ms"} (milliseconds)<br>
* {@code "s"} (seconds)<br>
* {@code "m"} (minutes)<br>
* {@code "h"} (hours)<br>
* {@code "d"} (days)<br>
* </td>
* <td>{@code "2 h"},<br>
* {@code "24 h"},<br>
* {@code "2 d"},<br>
* {@code "0"}</td>
* </tr>
* <tr>
* <th scope="row">{@code maxSize}</th>
* <td>Specifies the size, measured in bytes, at which data is kept in disk
* repository. Only works if
* {@code disk=true}, otherwise this parameter is ignored.</td>
* <td>{@code "0"} (no limit)</td>
* <td>String representation of a {@code Long} value, must be positive</td>
* <td>{@code "0"}, <br>
* {@code "1000000000"}</td>
* </tr>
* <tr>
* <th scope="row">{@code dumpOnExit}</th>
* <td>Dumps recording data to disk on Java Virtual Machine (JVM) exit</td>
* <td>{@code "false"}</td>
* <td>String representation of a {@code Boolean} value, {@code "true"} or
* {@code "false"}</td>
* <td>{@code "true"},<br>
* {@code "false"}</td>
* </tr>
* <tr>
* <th scope="row">{@code destination}</th>
* <td>Specifies the path where recording data is written when the recording stops.</td>
* <td>{@code "false"}</td>
* <td>See {@code Paths#getPath} for format. <br>
* If this method is invoked from another process, the data is written on the
* machine where the target JVM is running. If destination is a relative path, it
* is relative to the working directory where the target JVM was started.}</td>
* <td>{@code "c:\recording\recotding.jfr"},<br>
* {@code "/recordings/recording.jfr"}, {@code "recording.jfr"}</td>
* </tr>
* <tr>
* <th scope="row">{@code disk}</th>
* <td>Stores recorded data as it is recorded</td>
* <td><code>"false"</code></td>
* <td>String representation of a {@code Boolean} value, {@code "true"} or
* {@code "false"}</td>
* <td>{@code "true"},<br>
* {@code "false"}</td>
* <tr>
* <th scope="row">{@code duration}</th>
* <td>Sets how long the recording should be running</td>
* <td>{@code "0"} (no limit, continuous)</td>
* <td>{@code "0"} if no limit should be imposed, otherwise a string
* representation of a positive {@code Long} followed by an empty space and one
* of the following units:<br>
* <br>
* {@code "ns"} (nanoseconds)<br>
* {@code "us"} (microseconds)<br>
* {@code "ms"} (milliseconds)<br>
* {@code "s"} (seconds)<br>
* {@code "m"} (minutes)<br>
* {@code "h"} (hours)<br>
* {@code "d"} (days)<br>
* </td>
* <td>{@code "60 s"},<br>
* {@code "10 m"},<br>
* {@code "4 h"},<br>
* {@code "0"}</td>
* </tr>
* </tbody>
* </table>
*
* @since 9
*/
public interface FlightRecorderMXBean extends PlatformManagedObject {
/**
* String representation of the {@code ObjectName} for the
* {@code FlightRecorderMXBean}.
*/
public static final String MXBEAN_NAME = "jdk.management.jfr:type=FlightRecorder";
/**
* Creates a recording, but doesn't start it.
*
* @return a unique ID that can be used to start, stop, close and
* configure the recording
*
* @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 java.lang.SecurityException if a security manager exists and the
* caller does not have {@code ManagementPermission("control")}
*
* @see Recording
*/
long newRecording() throws IllegalStateException, SecurityException;
/**
* Creates a snapshot recording of all available recorded data.
* <p>
* A snapshot is a synthesized recording in a stopped state. If no data is
* available, a recording with size {@code 0} is returned.
* <p>
* A snapshot provides stable access to data for later operations (for example,
* operations to change the time interval or to reduce the data size).
* <p>
* The caller must close the recording when access to the data is no longer
* needed.
*
* @return a snapshot of all available recording data, not {@code null}
*
* @throws java.lang.SecurityException if a security manager exists and the
* caller does not have {@code ManagementPermission("control")}
*
* @return a unique ID that can be used for reading recording data.
*
* @see Recording
*/
public long takeSnapshot();
/**
* Creates a copy of an existing recording, useful for extracting parts of a
* recording.
* <p>
* The cloned recording contains the same recording data as the
* original, but it has a new ID and a name prefixed with
* {@code "Clone of recording"}. If the original recording is running, then
* the clone is also running.
*
* @param recordingId the recording ID of the recording to create a clone
* from
*
* @param stop if the newly created clone is stopped before
* returning.
*
* @return a unique ID that can be used to start, stop,
* close and configure the recording
*
* @throws IllegalArgumentException if a recording with the specified ID
* doesn't exist
*
* @throws java.lang.SecurityException if a security manager exists and the
* caller does not have {@code ManagementPermission("control")}
*
* @see Recording
*/
long cloneRecording(long recordingId, boolean stop) throws IllegalArgumentException, SecurityException;
/**
* Starts the recording with the specified ID.
* <p>
* A recording that is stopped can't be restarted.
*
* @param recordingId ID of the recording to start
*
* @throws IllegalArgumentException if a recording with the specified ID
* doesn't exist
*
* @throws java.lang.SecurityException if a security manager exists and the
* caller does not have {@code ManagementPermission("control")}
*
* @see Recording
*/
void startRecording(long recordingId) throws IllegalStateException, SecurityException;
/**
* Stops the running recording with the specified ID.
*
* @param recordingId the ID of the recording to stop
*
* @return {@code true} if the recording is stopped, {@code false}
* otherwise
*
* @throws IllegalArgumentException if a recording with the specified ID
* doesn't exist
* @throws IllegalStateException if the recording is not running
* @throws java.lang.SecurityException if a security manager exists and the
* caller does not have {@code ManagementPermission("control")}
*
* @see #newRecording()
*/
boolean stopRecording(long recordingId) throws IllegalArgumentException, IllegalStateException, SecurityException;
/**
* Closes the recording with the specified ID and releases any system
* resources that are associated with the recording.
* <p>
* If the recording is already closed, invoking this method has no effect.
*
* @param recordingId the ID of the recording to close
*
* @throws IllegalArgumentException if a recording with the specified ID
* doesn't exist
* @throws IOException if an I/O error occurs
* @throws java.lang.SecurityException if a security manager exists and the
* caller does not have {@code ManagementPermission("control")}
*
* @see #newRecording()
*/
void closeRecording(long recordingId) throws IOException;
/**
* Opens a data stream for the recording with the specified ID, or {@code 0}
* to get data irrespective of recording.
* <table class="striped">
* <caption>Recording stream options</caption>
* <thead>
* <tr>
* <th scope="col">Name</th>
* <th scope="col">Descripion</th>
* <th scope="col">Default value</th>
* <th scope="col">Format</th>
* <th scope="col">Example values</th>
* </tr>
* </thead>
* <tbody>
* <tr>
* <th scope="row">{@code startTime}</th>
* <td>Specifies the point in time to start a recording stream. Due to
* how data is stored, some events that start or end prior to the
* start time may be included.</td>
* <td>{@code Instant.MIN_VALUE.toString()}</td>
* <td>ISO-8601. See {@link Instant#toString}<br>
* or milliseconds since epoch</td>
* <td>{@code "2015-11-03T00:00"},<br>
* {@code "1446508800000"}</td>
* </tr>
* <tr>
* <th scope="row">{@code endTime}</th>
* <td>Specifies the point in time to end a recording stream. Due to how
* data is stored, some events that start or end after the end time may
* be included.</td>
* <td>{@code Instant.MAX_VALUE.toString()}</td>
* <td>ISO-8601. See {@link Instant#toString} <br>
* or milliseconds since epoch</td>
* <td>{@code "2015-11-03T01:00"}, <br>
* {@code "1446512400000"}</td>
* </tr>
*
* <tr>
* <th scope="row">{@code blockSize}</th>
* <td>Specifies the maximum number of bytes to read with a call to {@code readStream}
* </td>
* <td>{@code "50000"}</td>
* <td>A positive {@code long} value. <br>
* <br>
* Setting {@code blockSize} to a very high value may result in
* {@link OutOfMemoryError} or an {@link IllegalArgumentException}, if the
* Java Virtual Machine (JVM) deems the value too large to handle.</td>
* <td>{@code "50000"},<br>
* {@code "1000000"},<br>
* </tr>
* </tbody>
* </table>
* If an option is omitted from the map the default value is used.
* <p>
* The recording with the specified ID must be stopped before a stream can
* be opened. This restriction might be lifted in future releases.
*
* @param recordingId ID of the recording to open the stream for
*
* @param streamOptions a map that contains the options that controls the amount of data
* and how it is read, or {@code null} to get all data for the
* recording with the default block size
*
* @return a unique ID for the stream.
*
* @throws IllegalArgumentException if a recording with the iD doesn't
* exist, or if {@code options} contains invalid values
*
* @throws IOException if the recording is closed, an I/O error occurs, or
* no data is available for the specified recording or
* interval
*
* @throws java.lang.SecurityException if a security manager exists and the
* caller does not have {@code ManagementPermission("control")}
*/
long openStream(long recordingId, Map<String, String> streamOptions) throws IOException;
/**
* Closes the recording stream with the specified ID and releases any system
* resources that are associated with the stream.
* <p>
* If the stream is already closed, invoking this method has no effect.
*
* @param streamId the ID of the stream
*
* @throws IllegalArgumentException if a stream with the specified ID doesn't
* exist
* @throws IOException if an I/O error occurs while trying to close the stream
* @throws java.lang.SecurityException if a security manager exists and the
* caller does not have {@code ManagementPermission("control")}
*
* @see #openStream(long, Map)
*/
void closeStream(long streamId) throws IOException;
/**
* Reads a portion of data from the stream with the specified ID, or returns
* {@code null} if no more data is available.
* <p>
* To read all data for a recording, invoke this method repeatedly until
* {@code null} is returned.
*
* @param streamId the ID of the stream
*
* @return byte array that contains recording data, or {@code null} when no more
* data is available
* @throws IOException if the stream is closed, or an I/O error occurred while
* trying to read the stream
* @throws IllegalArgumentException if no recording with the stream ID exists
* @throws java.lang.SecurityException if a security manager exists and the
* caller does not have {@code ManagementPermission("monitor")}
*/
byte[] readStream(long streamId) throws IOException;
/**
* Returns a map that contains the options for the recording with the
* specified ID (for example, the destination file or time span to keep
* recorded data).
* <p>
* See {@link FlightRecorderMXBean} for available option names.
*
* @param recordingId the ID of the recording to get options for
*
* @return a map describing the recording options, not {@code null}
*
* @throws IllegalArgumentException if no recording with the
* specified ID exists
* @throws java.lang.SecurityException if a security manager exists and the
* caller does not have {@code ManagementPermission("monitor")}
*
*/
Map<String, String> getRecordingOptions(long recordingId) throws IllegalArgumentException;
/**
* Returns a {@code Map} that contains the settings for the recording with the specified ID,
* (for example, the event thresholds)
* <p>
* If multiple recordings are running at the same time, more data could be
* recorded than what is specified in the {@code Map} object.
* <p>
* The name in the {@code Map} is the event name and the setting name separated by
* {@code "#"} (for example, {@code "jdk.VMInfo#period"}). The value
* is a textual representation of the settings value (for example,
* {@code "60 s"}).
*
* @param recordingId the ID of the recordings to get settings for
*
* @return a map that describes the recording settings, not {@code null}
*
* @throws IllegalArgumentException if no recording with the specified ID exists
* @throws java.lang.SecurityException if a security manager exists and the
* caller does not have {@code ManagementPermission("monitor")}
*/
Map<String, String> getRecordingSettings(long recordingId) throws IllegalArgumentException;
/**
* Sets a configuration as a string representation for the recording with the
* specified ID.
*
* @param recordingId ID of the recording
* @param contents a string representation of the configuration file to use,
* not {@code null}
* @throws IllegalArgumentException if no recording with the
* specified ID exists or if the configuration could not be parsed.
* @throws java.lang.SecurityException if a security manager exists and the
* caller does not have {@code ManagementPermission("control")}
*
* @see Configuration#getContents()
*/
void setConfiguration(long recordingId, String contents) throws IllegalArgumentException;
/**
* Sets a predefined configuration for the recording with the specified ID.
*
* @param recordingId ID of the recording to set the configuration for
* @param configurationName the name of the configuration (for example,
* {@code "profile"} or {@code "default"}), not {@code null}
* @throws IllegalArgumentException if no recording with the
* specified ID exists
* @throws java.lang.SecurityException if a security manager exists and the
* caller does not have {@code ManagementPermission("control")}
*
* @see #getConfigurations()
*/
void setPredefinedConfiguration(long recordingId, String configurationName) throws IllegalArgumentException;
/**
* Sets and replaces all previous settings for the specified recording.
* <p>
* A setting consists of a name/value pair, where <em>name</em> specifies the
* event and setting to configure, and the <em>value</em> specifies what to set
* it to.
* <p>
* The name can be formed in the following ways:
* <p>
* {@code
* <event-name> + "#" + <setting-name>
* }
* <p>
* or
* <p>
* {@code
* <event-id> + "#" + <setting-name>
* }
* <p>
* For example, to set the sample interval of the CPU Load event to once every
* second, use the name {@code "jdk.CPULoad#period"} and the value
* {@code "1 s"}. If multiple events use the same name, for example if an event
* class is loaded in multiple class loaders, and differentiation is needed
* between them, then the name is {@code "56#period"}. The ID for an event is
* obtained by invoking {@link jdk.jfr.EventType#getId()} method and is valid
* for the Java Virtual Machine (JVM) instance that the event is registered in.
* <p>
* A list of available event names is retrieved by invoking
* {@link jdk.jfr.FlightRecorder#getEventTypes()} and
* {@link jdk.jfr.EventType#getName()}. A list of available settings for an
* event type is obtained by invoking
* {@link jdk.jfr.EventType#getSettingDescriptors()} and
* {@link jdk.jfr.ValueDescriptor#getName()}.
* <p>
*
* @param recordingId ID of the recording
*
* @param settings name value map of the settings to set, not {@code null}
*
* @throws IllegalArgumentException if no recording with the specified ID exists
* @throws java.lang.SecurityException if a security manager exists and the
* caller does not have {@code ManagementPermission("control")}
*
* @see Recording#getId()
*/
void setRecordingSettings(long recordingId, Map<String, String> settings) throws IllegalArgumentException;
/**
* Configures the recording options (for example, destination file and time span
* to keep data).
* <p>
* See {@link FlightRecorderMXBean} for a description of the options and values
* that can be used. Setting a value to {@code null} restores the value to the
* default value.
*
* @param recordingId the ID of the recording to set options for
*
* @param options name/value map of the settings to set, not {@code null}
*
* @throws IllegalArgumentException if no recording with the specified ID exists
* @throws java.lang.SecurityException if a security manager exists, and the
* caller does not have {@code ManagementPermission("control")} or an
* option contains a file that the caller does not have permission to
* operate on.
* @see Recording#getId()
*/
void setRecordingOptions(long recordingId, Map<String, String> options) throws IllegalArgumentException;
/**
* Returns the list of the available recordings, not necessarily running.
* <p>
* <b>MBeanServer access</b>:<br>
* The mapped type of {@code RecordingInfo} is {@code CompositeData} with
* attributes as specified in the {@link RecordingInfo#from
* RecordingInfo.from} method.
*
* @return list of recordings, not {@code null}
*
* @throws java.lang.SecurityException if a security manager exists and the
* caller does not have {@code ManagementPermission("monitor")}
*
* @see RecordingInfo
* @see Recording
*/
List<RecordingInfo> getRecordings();
/**
* Returns the list of predefined configurations for this Java Virtual Machine (JVM).
* <p>
* <b>MBeanServer access</b>:<br>
* The mapped type of {@code ConfigurationInfo} is {@code CompositeData}
* with attributes as specified in the {@link ConfigurationInfo#from
* ConfigurationInfo.from} method.
*
* @return the list of predefined configurations, not {@code null}
*
* @throws java.lang.SecurityException if a security manager exists and the
* caller does not have {@code ManagementPermission("monitor")}
*
* @see ConfigurationInfo
* @see Configuration
*/
List<ConfigurationInfo> getConfigurations();
/**
* Returns the list of currently registered event types.
* <p>
* <b>MBeanServer access</b>:<br>
* The mapped type of {@code EventTypeInfo} is {@code CompositeData} with
* attributes as specified in the {@link EventTypeInfo#from
* EventTypeInfo.from} method.
*
* @return the list of registered event types, not {@code null}
*
* @throws java.lang.SecurityException if a security manager exists and the
* caller does not have {@code ManagementPermission("monitor")}
*
* @see EventTypeInfo
* @see EventType
*/
List<EventTypeInfo> getEventTypes();
/**
* Writes recording data to the specified file.
* <p>
* If this method is invoked remotely from another process, the data is written
* to a file named {@code outputFile} on the machine where the target Java
* Virtual Machine (JVM) is running. If the file location is a relative path, it
* is relative to the working directory where the target JVM was started.
*
* @param recordingId the ID of the recording to dump data for
*
* @param outputFile the system-dependent file name where data is written, not
* {@code null}
*
* @throws IOException if the recording can't be dumped due to an I/O error (for
* example, an invalid path)
*
* @throws IllegalArgumentException if a recording with the specified ID doesn't
* exist
*
* @throws IllegalStateException if the recording is not yet started or if it is
* already closed
*
* @throws SecurityException if a security manager exists and its
* {@code SecurityManager.checkWrite(java.lang.String)} method denies
* write access to the named file or the caller does not have
* {@code ManagmentPermission("control")}
*
* @see java.nio.file.Path#toString()
* @see Recording#dump(java.nio.file.Path)
*/
void copyTo(long recordingId, String outputFile) throws IOException, SecurityException;
}
⏎ jdk/management/jfr/FlightRecorderMXBean.java
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