Package org.openjdk.jmc.flightrecorder.serializers.json

Class FlameGraphJsonSerializer

java.lang.Object

org.openjdk.jmc.flightrecorder.serializers.json.FlameGraphJsonSerializer

public class FlameGraphJsonSerializer
extends Object

Produces a tree model suitable for rendering flame graphs.

Constructor Summary

Constructors

Constructor	Description
FlameGraphJsonSerializer()

Method Summary

Modifier and Type	Method	Description
static void	main(String[] args)	Generates a JSON file for the execution sample (CPU profiling) events available in the recording.
static String	toJson(StacktraceTreeModel model)	Serializes a StacktraceTreeModel to JSON.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

FlameGraphJsonSerializer

public FlameGraphJsonSerializer()

Method Detail

toJson

public static String toJson(StacktraceTreeModel model)

Serializes a StacktraceTreeModel to JSON.

Parameters:

model - the StacktraceTreeModel to serialize to JSON.

Returns:

a String containing the serialized model.

main

public static void main(String[] args)
                 throws IOException,
                        CouldNotLoadRecordingException

Generates a JSON file for the execution sample (CPU profiling) events available in the recording.

TODO: This could easily be made highly configurable to allow the user to configure which event type to filter for, what attribute to use for weight, and what frame separator to use.

Parameters:

args - takes one argument - the file name of the JFR file to serialize into JSON.

Throws:

IOException

CouldNotLoadRecordingException