JEP 328 : Flight Recorder open source preview

[Markus Gronlund]

Greetings,

 

This is a preview of a large part of the source code for JEP 328 : Flight Recorder[1].

 

Webrev: http://cr.openjdk.java.net/~mgronlun/JEP328_FlightRecorder/Preview/webrev/index.html

 

It has been tested on the following platforms:

* Linux-x64

* Windows-x64

* MacOSX-x64

 

We are planning to send out the code for full review in a couple of weeks.

 

At this point, we are preparing changes to move to a single backend, as suggested in the JEP.

These will encompass the following:

 

1. Rename macro INCLUDE_TRACE to INCLUDE_JFR.

2. Remove flag -XX:[+|-]EnableTracing.

3. Cleanup unused elements and attributes by restructuring the trace xml files.

4. Move code under hotspot/share/trace to hotspot/share/jfr/metadata.

 

Thank you

Markus and Erik

 

[1] http://openjdk.java.net/jeps/328

 

PS the patch was generated from the hs repository [2] using change [3] as parent.

[2] http://hg.openjdk.java.net/jdk/hs

[3] changeset:   49618:947560700a09

      user:        stefank

      date:        Fri Apr 06 13:55:25 2018 +0200

      summary:     8201136: Move GC flags from globals.hpp to GC specific files