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CDT/MultiCoreDebugWorkingGroup/calls/minutes

Multicore Debug Workgroup Minutes of Meetings

October 14th, 2014

Attendees

  1. Alvaro Sanchez-Leon (Ericsson)
  2. Marc-Andre Laperle (Ericsson)
  3. Marc Dumais (Ericsson)
  4. Mikhail Khodjaiants (Mentor)
  5. William Riley (Renesas)
  6. Marc Khouzam (Ericsson)

Minutes

  • Let's try a hangout for the next call
    • William does not seem to be able to access hangouts from his internal network. So let's also use the conference bridge.
  • Per-element formatting for expressions and variables
    • Posted and ready for review.
    • It is not ideal that all variables with the same name will use the same format. However, finding the right solution to handle that is not obvious. We agreed to start with this implementation and see how things go.
    • Would be nice to set format for all elements of an array, but the solution is not that straight forward. What if we have an array of classes/struts? We have to think about the different cases for arrays for this.
    • Let's use another bug for array handling as an enhancement
  • SWTBot testing for Debug/CDT
    • Want to get this working for Debug.
  • Register grouping
    • Review continues nearing completion. Still planned for 8.6
  • Registers using variable objects
    • Would be nice to have in CDT
    • Once Registers Grouping is ready, the varObj patch will need rebasing, then we can look at getting it in to CDT
  • Example plugin showing how to extend DSF-GDB http://eclip.se/441277
    • Low on priority but will commit when time permits
  • Multi-terminate/disconnect patch
    • Mikhail may have some time to look at it again
    • Jan 19th is feature freeze for 8.6
  • New UI
    • No update

Sept 9th, 2014

Attendees

  1. Phil Mason (Broadcom)
  2. Alvaro Sanchez-Leon (Ericsson)
  3. Marc-Andre Laperle (Ericsson)
  4. Marc Dumais (Ericsson)
  5. Jeff Johnston (RedHat)
  6. William Riley (Renesas)
  7. Marc Khouzam (Ericsson)

Minutes

  • Multicore Visualizer Pin&Clone
    • Clone in 8.5, Pin in 8.6. Together allows to have multiple visualizer views and pin each one to a different debug session
    • Can also have multiple visualizer views using different filter levels
  • Launch bar
    • Does it support Profiling? Does not look like it but does seem to be a good fit.
    • Should it be part of the Standalone debugger? Something to think about.
  • Register grouping
    • Review continues and we aim for 8.6
  • Per-element formatting for expressions and variables
    • Aiming for 8.6 and working out the last one or two remaining issues
  • Example plugin showing how to extend DSF-GDB http://eclip.se/441277
  • New UI
    • Vladimir was going to post to Github and willing to post elsewhere if we wanted.
    • Marc will ping him
  • Stand-alone debugger SWTBot tests
    • Jeff wants to have to SWTBot tests for the Stand-alone debugger
    • We are interested in getting those into CDT
    • Marc-Andre will help configure our HIPP to get it running
    • Jeff will post patch to re-enable autotools SWTBot tests as a first attempt
  • What is the state of lldb MI and working with CDT?
    • Recommendation is to post questions to the list and see
    • Could the stand-alone debugger also work for lldb? It should be easy once CDT support lldb.
  • Should we put effort in supporting Multiple versions of stand-alone debugger for a user?
    • The idea is that if a user has more than one version of CDT installed, only one stand-alone debugger will be setup and it will be the last one the user ran the install script for.
    • The user could copy the stand-alone debugger directory to allow to run more than one version
    • the user could also run the install script for the version she wants as a way to choose the version
    • We probably don't need to address this until there is an explicit request for such support

August 5th, 2014

Attendees

  1. Alvaro Sanchez-Leon (Ericsson)
  2. Marc Dumais (Ericsson)
  3. Xavier Raynaud (Kalray)
  4. Mikhail Khodjaiants (Mentor)
  5. Marc Khouzam (Ericsson)

Minutes

  • CDT 8.5 (Luna SR1)
RC1+1 Aug 18th 2014 Proposed feature freeze and branch point
RC2+1 Sept 1st 2014 Proposed joint test effort
RC3+1 Sept 8th 2014
RC4+1 Sept 15th 2014
Release Sept 26th 2014
  • Content will be small but that is expected as SR1 has barely 2 months of development time.
  • Marc K will email the list to propose the above release process: see email here
  • CDT 8.6 (Luna SR2)
RC1+1 Jan 19th 2015
RC2+1 Feb 2nd 2015
RC3+1 Feb 9th 2105
RC4+1 Feb 16th 2015
Release Feb 27th 2015
  • CDT Logo: Plan is to use http://99designs.ca/ or https://www.designonclick.com/. Doug will take care of it and the Eclipse Foundation will finance it.
  • Using target definitions does not always refresh.
    • Target definitions were updated recently to include mockito but it does not seem to work.
    • There is a bug in PDE that does not refresh the target def properly.
    • Workaround is to open the target def file in an editor and change its version at the top then save. Once refreshed, the version can be reverted.
  • How should target defs be updated?
    • How to use the 'staging' target def vs the others?
  • New UI
    • Progress seems to have stopped. Priorities might have shifted at Mentor.
    • Why not post the existing code in the hopes it could progress through other community members?
  • Register grouping
    • Next round of review completed
    • Targetted for CDT 8.6
  • Per-element formatting for expressions and variables
    • Feature is ready to be committed except for the refreshing issue when dealing with multiple sessions
    • Improvements mentioned by Mikhail (Marc K will open a bug: Bug 441276):
      • Setting format should affect all children, probably not for complex structs but would be great for arrays
      • Should persistence be per-launch?
      • As was first experienced with CDI, some case for this feature are quite complicated. We propose to implement feature in a reasonable way so as to add value, but not to necessarily address each corner case; as long as it does not break normal behavior.
  • Example plugin showing how to extend DSF-GDB
    • DSF-GDB was originally meant to be and example of how to use DSF. It has grown to be extended itself but does not provide an example of how to extend it.
    • Marc K will open a bug to track progress, suggestions and discussions: Bug 441277
    • How to extend the view model elegantly? Does not seem to be a good way. Currently requires a lot of code duplication. We would like to improve that.
  • Suggestion to support a Snapshot feature a la EDC.
    • Idea would be to be able to save a snapshot during a debug session and send it to someone else to examine.
    • Could be implemented relatively easily using core files as snapshots

July 8th, 2014

Attendees

  1. Marc Dumais (Ericsson)
  2. Xavier Raynaud (Kalray)
  3. Mikhail Khodjaiants (Mentor)
  4. Jeff Johnston (RedHat)
  5. William Riley (Renesas)
  6. Marc Khouzam (Ericsson)

Minutes

  • Luna release
    • Coordinated testing was valuable and helped find bugs that would have gone unnoticed
    • Coordinated testing only required 1 to 2 hours of the involved people. Good return on investment
  • Launch bar
    • No update
  • Debug tests on Hudson
    • Debug tests with latest GDB run as part of CDT's master nightly build and part of every Gerrit review build
    • Nighlty jobs added to run tests with GDB version 6.6 to latest. Not all tests pass yet and should be eventually cleaned up or some disabled to get a green light
    • Nightly job to run tests using GDB built from its own master branch and another for GDB's maintenance branch. This allows us to notify the GDB community of regressions that affect CDT before the GDB is released.
  • New UI
    • No update
  • Multi-terminate/disconnect
    • Elegant solution posted and reviewed
    • JUnit tests are harder to write because we have to somehow check that we disconnected or terminated processes
    • Manual tests could be added instead in the test document
  • Pin & Clone for Visualizer
    • Patch available to add a clone button to visualizer. Waiting for review.
    • Will allow to have multiple visualizer views which work with different filters
    • Pin will be worked on to provide even better value for multiple visualizer views
  • Stand-alone
    • -help now supported
    • params after executable are no longer swallowed by eclipse
    • vmargs now supported
    • better path support for binary including support for PATH variable
    • man page to be available
    • handling installations that use dropins, don't mix RPM install with p2 install

May 13th, 2014

Attendees

  1. Phil Mason (Broadcom)
  2. Alvaro Sanchez-Leon (Ericsson)
  3. Marc Dumais (Ericsson)
  4. Mikhail Khodjaiants (Mentor)
  5. Jeff Johnston (RedHat)
  6. William Riley (Renesas)
  7. Abeer Bagul (Tensilica)
  8. Marc Khouzam (Ericsson)

Minutes

  • Luna release
    • Would be nice to provide coordinated testing
    • Let's revive the test wiki page and get people to take parts of it. Should be small effort per person but valuable overall
    • Start with Debug and hope to show by example for other CDT components
  • Dynamic printf Bug 400628
    • Committed to M7 for Luna
  • Stand-alone debugger
    • Commmitted to M7 for Luna
    • New plugin
    • First install CDT CPP then run o.e.cdt.debug.application/install.sh script
    • Jeff will update N&N
    • Instructions here
  • New Launch UI
    • No specific update but work seems to continue
  • Doug added Multicore Visualizer to Luna aggregated update site which will make it easier to install
  • Register grouping Bug 235747
    • Marc caused delay in review but should get to it in the next couple of weeks
  • Better disconnect feature which allows to disconnect from all processes
    • Posted for review
    • Supports multiple selection
  • Feature to update bp icon in the editor based on installation state of the selection
    • Posted for review

April 8th, 2014

Attendees

  1. Phil Mason (Broadcom)
  2. Alvaro Sanchez-Leon (Ericsson)
  3. Marc Dumais (Ericsson)
  4. Mikhail Khodjaiants (Mentor)
  5. Vladimir Prus (Mentor)
  6. Doug Schaefer (QNX)
  7. Marc Khouzam (Ericsson)

Minutes

  • One week before CDT Summit/EclipseCon
  • Luna release
    • May 9th. Only 4 weeks to go.
  • Ongoing work
    • New Launch UI
      • Progress slowed down a bit now due to other work.
      • Too tight for Luna. Aiming to have it available soon and have a longer soak time towards the release after Luna, in September
    • Dynamic printf Bug 400628
      • Dependency on new breakpoint handling by GDB, which will be ready this week
      • New context-menu action "Add dynamic-printf..." to be added
      • New patch for dynamic-printf should be posted next week.
    • Register grouping Bug 235747
      • Long delay due to other work, but very close
      • If review goes well, could make it for Luna
    • Stand-alone debugger
      • No update

March 11th, 2014

Attendees

  1. Phil Mason (Broadcom)
  2. Alvaro Sanchez-Leon (Ericsson)
  3. Marc Dumais (Ericsson)
  4. Mikhail Khodjaiants (Mentor)
  5. William Riley (Renesas)
  6. Marc Khouzam (Ericsson)

Minutes

  • One week before CDT Summit/EclipseCon
    • On track for a good summit.
  • Luna release
    • Must look at what can be included in this release.
    • Dynamic-printf is planned for Luna Bug 400628
  • Ongoing work
    • New Launch UI
      • No updated. Vladimir has taken over from Mikhail.
    • Setting Hardware Breakpoint from the UI Bug 332993
      • Ability to set hardware and temporary breakpoints done.
      • No update on possible use of breakpoint type
    • Dynamic printf Bug 400628
      • Rebased to use the fix for multi-process breakpoints but delayed due to EclipseCon work
    • Multicore Visualizer with Parallella
      • CDT state quite good but some features still being worked on for the GDBServer of the Parallella

February 11th, 2014

Attendees

  1. Marc Dumais (Ericsson)
  2. Teodor Madan (Freescale)
  3. Mikhail Khodjaiants (Mentor)
  4. Doug Schaefer (QNX)
  5. Jeff Johnston (RedHat)
  6. William Riley (Renesas)
  7. Marc Khouzam (Ericsson)

Minutes

  • CDT Summit/EclipseCon
  • Ongoing work
    • New Launch UI
      • Working solution available!
      • Ready to discuss some implementation detail
      • Specific to CDT at the moment but could be generalized
      • Main advantage is the support for multi-process
    • Trace Control Enhancements Bug 390827
      • Feature committed! See New and Noteworthy for details.
      • It would be nice to move some of the new widgets to a common area such as o.e.cdt.debug.ui
      • Was not tested on Windows. If someone can try it and report, that would be useful
    • Setting Hardware Breakpoint from the UI Bug 332993
      • new bug opened to allow to change bp type at creation or after (based on Mikhail's work) Bug 427898
      • patch posted in bugzilla but will be posted to Gerrit
      • do we need the first proposal too? It's value is to set a default type. Let's focus on first contribution and then discuss the original one.
    • Show values returned from function calls Bug 341731
      • Reviewed by Marc-Andre and updated accordingly
    • Dynamic Printf Bug 400268
      • Planned for Luna.
      • GDB 7.7 much more stable. Still some issue but not blocking
      • Will be demoed at CDT Summit
      • Patch is large but mostly a copy of Tracepoints. Important changes are much smaller.
    • Multicore Visualizer with Parallella
      • gdb stub for Parallella is being updated to provide CDT with the necessary information
      • Will be demoed at EclipseCon
    • Stand-alone CDT debugger
      • Customize perspective support added (needed for Reverse Debug and Tracepoints)
      • Documentation has been updated
      • Will be demoed at CDT Summit
      • Was presented to GDB community and was well received, with more comments expected

January 14th, 2014

Attendees

  1. Phil Mason (Broadcom)
  2. Alvaro Sanchez-Leon (Ericsson)
  3. Andreas From (Ericsson)
  4. Marc Dumais (Ericsson)
  5. Simon Marchi (Ericsson)
  6. Xavier Raynaud (Kalray)
  7. Mikhail Khodjaiants (Mentor)
  8. Jeff Johnston (RedHat)
  9. William Riley (Renesas)
  10. Bill Swanson (Tilera)
  11. Marc Khouzam (Ericsson)

Minutes

  • CDT Summit/EclipseCon
    • Marc K to send an email to list to remind people so that others can make plan
  • Ongoing work
    • New Launch UI
      • Progress continues
      • Single new launch config type allowing to start multiple processes together. It supports both starting a new process and attaching to one. It supports both local and remote
      • Difficulty in supporting older GDB versions. Currently based on 7.2 and higher
      • Issue with short lived processes that don't appear in the view
      • When to use 'remote' or 'extended-remote'
    • Environment Variables for Remote launch Bug 424436
      • Will allow to specify env vars when launching a remote application
      • Some limitations due to TM/RSE that we will have to deal with
    • Trace Control Enhancements Bug 390827
      • Review on-going. Meeting will held Jan 14th to discuss comments of review. Contact Marc Khouzam to join.
    • Show values returned from function calls Bug 341731
    • Mutlicore Visualizer with Parallella
      • New plugin extending multicore visualizer
      • both canvas and model have been updated for the Parallella
    • Multi-process memory views Bug 250323
      • Patch accepted, will be committed today
    • Dynamic Printf Bug 400268
    • Stand-alone CDT debugger
      • Marc K has tried it out. Looks great but a couple of comments communicated to Jeff
      • Start script will be simplified
      • "Customize perspective..." menu will be added
      • Will be shown at the CDT Summit
      • Some flags will be added to the command-line to specify launch option
      • No need to create a project or a launch config.
      • Should we still show the launch config stuff? Yes, but most won't even look at it.
      • Improvement over Insight (amongst others) of supporting the indexer through a build log
      • Planned for Luna
      • Need to discuss with Doug about how to make this available

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