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Difference between revisions of "CDT/Obsolete/MultiCoreDebugWorkingGroup/calls/minutes"

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= Multicore Debug Workgroup Minutes of Meetings =
 
= Multicore Debug Workgroup Minutes of Meetings =
  
−
== July 10th, 2012 ==
+
== January 12th, 2016 ==
  
 
=== Attendees ===
 
=== Attendees ===
  
 
# Phil Mason (Broadcom)
 
# Phil Mason (Broadcom)
 +
# Alvaro Sanchez-Leon (Ericsson)
 +
# Marc Dumais (Ericsson)
 +
# Jonah Graham (Kichwa Coders)
 
# Mikhail Khodjaiants (Mentor)
 
# Mikhail Khodjaiants (Mentor)
−
# Jason Litton (Sage)
 
−
# Abeer Bagul (Tensilica)
 
−
# Bill Swanson (Tilera)
 
 
# Marc Khouzam (Ericsson)
 
# Marc Khouzam (Ericsson)
  
 
=== Minutes ===
 
=== Minutes ===
  
−
'''General'''
+
* CDT call and Debug call will be merged.  We'll hold a single monthly call on the first Tuesday of the month.
−
* Marc on vacation next meeting.  If someone can chair the meeting that would be great, if not, we'll have to cancel the August call.
+
* Address breakpoints don't work well with multi-process
 +
** Mikhail to find existing patch for this problem
 +
* Showing an entry for each installation of a breakpoint in the breakpoint view
 +
** Continued interest in that feature from Kichwa Coders, Ericsson
 +
** Marc K to schedule a breakpoint call to help define what work would be needed
 +
* CDT 8.8.1 release on track.  Some sanity tests should be done around RC1 or RC2 in a couple of weeks.
 +
* Grouping feature continues.  More complex than expected but progressing.
 +
** Kichwas Coders have been able to make use of some of those changes from the Gerrit review.  They will give feedback if any.
 +
* Substitute path contribution
 +
** Marc K to start with review https://git.eclipse.org/r/#/c/63288/
 +
** Main review for path mapping now re-uses exiting UI and maps it to GDB backend when available
 +
*** When using GDB path mapping _all_ paths coming from GDB are properly mapped
 +
*** Cannot remove the bp synchronizer usage of path map because not all backends supports; however we should update the source service to behave properly when using GDB path mapping; Jonah's patch should cover for that.
 +
* Full GDB Console
 +
** We hope to have support from GDB in GDB 7.11 (fingers crossed)
 +
** Integration in CDT with a GDB prototype is going well
 +
** Exact same look and feel for user except that the console has all the feature of the real GDB CLI
 +
** Does the new console support giving python commands?  Setting breakpoint commands? etc
 +
* Reverse debugging with btrace
 +
** Review difficult because UI changes are intrusive
 +
** Contribution needs a CQ and the deadline is Feb 12th for CQ submission
 +
** Special hardware is necessary to fully test the patch; luckily Ericsson has access to such hardware
 +
** Marc K still hopes to figure things out in time
 +
* CDT 9.0: People are encouraged to look at actions at https://wiki.eclipse.org/CDT/APIBreakages
  
−
'''Demo of Expressions view working sets'''
+
== December 1st, 2015 ==
−
* Abeer gave a nice demo of the current status of the Expressions view working set [[https://bugs.eclipse.org/372181 Bug 372181]]
+
−
* Working sets can be created in the expressions view and associated to an instance of the view
+
−
* A user can then create a set of expressions for a core, and pin the view to that core; then she would use a cloned view to show a different set of expressions for another core.  That way, only expressions that make sense to the relevant core would be shown.
+
−
* Suggestion to display in the view what working set is active at the time.  We could use the view secondary id as is done by the Clone feature, or maybe it would be better to use the 'description' bar that is used by the Pin feature.
+
−
* Suggestion to 'link' working sets with a debug context.  That way, when the debug context changes, the expressions view would automatically change the active working set to match that debug context.  This would allow the expressions view to automatically display the expressions that can be evaluated for the debug context.
+
−
* Suggestion to use GDB's ability to evaluate an expression to decided if that expression should be displayed or not.  So, when a debug context is selected, all active expressions are sent to GDB; all expressions that return an error are deactivated for that debug context.  This is kind of building working sets automatically based on the validity of an expression.
+
−
* Abeer will push current solution to Gerrit to allow people to try it
+
−
 
+
−
'''Enhanced Expressions view'''
+
−
* [http://wiki.eclipse.org/CDT/EnhancedExpressionsProposed Enhancement] to allow to filter registers (see [https://bugs.eclipse.org/bugs/show_bug.cgi?id=381754 bug 381754])
+
−
* Marc has finished coding the feature.  The code is entirely independent of the rest of the Expressions service code, so it should be easy to maintain.  Marc will commit to master and see how things go.
+
−
* How to make the user aware of this feature?  Of course through the New&Noteworthy, but is there a 'live' way to tell the user the Expressions view accepts these matching patterns? 
+
−
* Suggestion to have a context-menu entry to show that this feature is available.
+
−
 
+
−
'''Register-grouping for DSF-GDB'''
+
−
* It would be nice to have in-view cell editing support like for the Expressions view.  That would make creating groups easy, and we could use the same solution as what is being done for the 'Enhanced Expressions view'.  The complexity of such a solution is unclear at this time.
+
−
* An easier solution is to mimic the CDI register-grouping solution.
+
−
* An enhancement to the CDI solution is to use in-view multi-selection to specify the content of a new register group.
+
−
* Marc will work on this solution in the short-term [http://bugs.eclipse.org/235747 Bug 235747].
+
−
 
+
−
'''Memory problems'''
+
−
* Memory views don't work with multi-process
+
−
* Are memory spaces of DSF the solution to that?
+
−
* Mikhail to create a bug for this problem
+
−
 
+
−
== June 12th, 2012 ==
+
  
 
=== Attendees ===
 
=== Attendees ===
  
−
# Norman Yee (Analog Devices)
 
 
# Phil Mason (Broadcom)
 
# Phil Mason (Broadcom)
 +
# Alvaro Sanchez-Leon (Ericsson)
 +
# Marc Dumais (Ericsson)
 +
# Tracy Miranda (Kichwa Coders)
 
# Mikhail Khodjaiants (Mentor)
 
# Mikhail Khodjaiants (Mentor)
−
# Abid Hafiz (Mentor)
+
# Doug Schaefer (QNX)
−
# Mark Goodchild (Renesas Electronics)
+
−
# Abeer Bagul (Tensilica)
+
−
# Bill Swanson (Tilera)
+
 
# Marc Khouzam (Ericsson)
 
# Marc Khouzam (Ericsson)
  
 
=== Minutes ===
 
=== Minutes ===
  
−
'''General'''
+
* CDT Arduino
−
* Juno is a good release for Debug.  Most new features for CDT.
+
** Meet-up to be held Dec 2nd.  Doug will send invite to the list.
 +
** GDB Stub now works on some Arduino board and CDT was able to hook to it using our GDB integration
  
−
'''Testing for Juno'''
+
* Multiple people interested in using RCPTT but no progress yet
−
* Manual Linux testing was [http://wiki.eclipse.org/CDT/8.1_RC3_Testing done]
+
−
* We need someone that will take care of Windows testing.  Mikhail did try a small session on Windows and it was ok.
+
−
* JUnit test for Debug [https://bugs.eclipse.org/bugs/show_bug.cgi?id=378834 soon to be running] on Hudson at Eclipse.org.  Starting with GDB 7.4 only.
+
  
−
'''Enhanced Expressions view'''
+
* Grouping
−
* [[CDT/EnhancedExpressions | Enhanced expressions view proposal]] to allow to filter registers (see [https://bugs.eclipse.org/bugs/show_bug.cgi?id=381754 bug 381754])
+
** Issue with Deltas. When there are multiple entries of the same element, which one should be expanded, selected. Work continues.
−
* Prototype available, Marc to focus to this feature next
+
  
−
'''Breakpoint improvements'''
+
* Substitute path feature [https://bugs.eclipse/472765 Bug 472765]
−
* Breakpoints are the weakest part of CDT
+
** New patch version should be posted this week or next
−
* Improving the situation is of interest to Ericsson, Mentor, Tensilica, Renesas.
+
*** Will use GDB behing CDT's current path mapping source container
−
* Need context-sensitive breakpoints.  Mikhail had started this in [https://bugs.eclipse.org/bugs/show_bug.cgi?id=360735 bug 360735]
+
−
* Suggestion to have an editable hover in the editor to select which threads/cores a breakpoint applies to
+
−
* Suggestion in having breakpoint view show an entry for each target a breakpoint can be applied to
+
−
* We could add bp hit count to the bp view if we have a per-target breakpoint entry
+
−
* Complexity arises when looking at surrounding scenarios: before launching, multiple debug sessions, etc.  We should determine what the user-experience should be during a debugging session, and then somehow deal with all the surrounding scenarios.
+
−
* Would be nice to get people to focus on this effort and get some improvements done, as there is a lot of interest
+
  
−
'''Visualizer'''
+
* GDB is expected to soon provide both a MI console and a separate CLI console towards the same GDB session
−
* What should be the next steps for the Visualizer/Multicore Visualizer?
+
** We plan on integrating this in CDT to provide a full GDB console for Neon
−
* What to choose for generic Visualizer and what for Multicore Visualizer
+
*** Recommendation to look at o.e.remote.console and mimic that approach of integrating the terminal widget into the console view
−
** Should try to make things generic when possible, without spending too much extra time on it
+
*** The widget is in o.e.tm.terminal.control
−
* Showing extra hardware.  What kind of hardware should we support? Need concrete examples
+
** Existing MI events will keep Eclipse in sync with commands given through the GDB console
 +
** Kichwa Coders is looking at providing a Pyton/EASE console.  This may be great to integrate with the GDB console, if possible.  More discussions needed to clarify.
 +
** Taking this new GDB feature further could allow to 'attach' CDT to an ongoing GDB debugging session.  This would allow users to decide to use eclipse even after they have started and progressed in their GDB debug session. More investigation needed.
  
−
'''OS Awareness'''
+
* Reverse debugging with btrace
−
* [https://bugs.eclipse.org/360314 OS Awareness bug 360314]
+
** Feature supported by newer Intel processors
−
* GDB support available in HEAD, with one more tweak expected.
+
** We need to be careful not to pollute the UI with options/dialogues that are not available to most users and try to only show such extensions when they are supported (by the processor in this case).
−
* Review comments posted on Gerrit.  Vladimir updating contribution to match comments.
+
−
* Updated contribution is expected to make use of DSF services instead of sending commands from the view code to GDB
+
  
−
== May 8th, 2012 ==
+
* CDT 9.0 progress
 +
** Some deprecated API have been removed.  More patches pending.
 +
 
 +
* New plan is to hold the Debug call and CDT call together each month on the first Tuesday of the month (current CDT slot)
 +
 
 +
== October 13th, 2015 ==
  
 
=== Attendees ===
 
=== Attendees ===
  
−
# Phil Mason (Broadcom)
+
# Alvaro Sanchez-Leon (Ericsson)
 +
# Marc Dumais (Ericsson)
 +
# Tracy Miranda (Kichwa Coders)
 +
# Jonah Graham (Kichwa Coders)
 
# Mikhail Khodjaiants (Mentor)
 
# Mikhail Khodjaiants (Mentor)
−
# Jason Litton (Sage)
+
# Doug Schaefer (QNX)
−
# Bill Swanson (Tilera)
+
# William Riley (Renesas)
 
# Marc Khouzam (Ericsson)
 
# Marc Khouzam (Ericsson)
  
 
=== Minutes ===
 
=== Minutes ===
  
−
'''General'''
+
* Grouping
−
* Feature freeze has come and gone.
+
** New patch posted to gerrit https://git.eclipse.org/r/#/c/46107/
−
* Deadline for bug fixes for Juno is June 15th.
+
*** Grouping works but the views don't refresh
−
* We have a good list of [http://wiki.eclipse.org/CDT/User/NewIn81#Debug new features] that apply to multicore in Juno:
+
*** Support for Groups containing other groups although the delta handling not done yet
−
** Multicore Visualizer View
+
** Implementation mostly in DSF-GDB
−
** Edit Breakpoint on Create
+
** New VM node for a group
−
** Timeout support for GDB commands
+
** Kichwa Coders are interested also
−
** Multi-select Resume/Suspend operations
+
* Substitute path feature [https://bugs.eclipse/472765 Bug 472765]
−
** Show only suspended threads in Debug view
+
** First review was done and Jonah is working on a new version
−
* Work continues for Kepler
+
** Currently, it is a new source container the user much choose
 +
*** Doug suggests making it the default behind the scene of the existing path mapping
 +
*** Jonah will write a patch re-using the existing path mapping
 +
*** This will avoid the issue of showing a source container that may not be supported if the backend does not support it
 +
*** It will also make it transparent to the user
 +
*** It is better to use GDB to do the path mapping as it will work for commands from the gdb console also
  
−
'''Testing for Juno'''
+
* CDT 9.0 progress
−
* It would be good for people to tests Juno.  Focus from this group would be the new Debug features added to Juno
+
** Doug faces issues with the launch target changing just before the launch starts
−
* Bill will look at testing the Multicore Visualizer by end of May
+
*** Launch delegate should be in platform.  Doug won't have time for Neon, but after.
−
* Sage uses CDT on Windows.  Jason will run some tests for the Juno release on Windows.
+
*** Launch delegates in CDT are too generic and should be split up
−
* Jason will try to to get the Debug JUnit tests to work on Windows again.
+
** Using API filters to better control changes and keep API Tool highlighting API-breaking changes?
−
* Mikhail has access to a Windows machine but needs to get it properly setup.
+
*** No, change the version now to make it clear there are API breaking changes.  It is felt that will be better for users.
−
* Marc will do testing on Linux and will focus on the new features of Debug
+
* Stand-alone Debugger script vs Stand-alone RCP
 +
** The script provides a way to launch a debug session from the command-line using an existing eclipse installation.  It is a different scenario than downloading the RCP installation.
 +
** Kichwa Coders have a feature that allows to launch the debugger into a '''running''' eclipse using a port. Something of the sort would be nice in open-source
 +
** Standalone script reduces the content of the launched eclipse.  This is to stick to the debugger functionality.  It does not provide build feature, but maybe it should
  
−
'''Proposed features'''
+
* Suggestion to add features to CPP package to make then known
−
* Marc posted a list of ideas for multicore-debugging on the wiki [http://wiki.eclipse.org/CDT/MultiCoreDebugWorkingGroup/PotentialFeatures#General_enhancements_proposed_for_Multicore_Debugging here]
+
** The real problem mis that we need to better advertise the work we do
−
* Mentor discussing making improvement to breakpoints, which could be in-line with proposal above
+
** Answer questions on Stack Overflow would help the community
 +
** More blogging would help
 +
* UI testing
 +
** RCPTT looks promising
 +
** A contribution of a test or two using RCPTT for CDT would help get people familiar with it
  
−
'''OS Awareness'''
+
== August 11th, 2015 ==
−
* New patch posted by Vladimir.  Too late for Juno but Marc will try to get it in early for Kepler.  Still dependent on GDB functionality that is not in open-source yet, so we'll need that resolved.
+
−
* [https://bugs.eclipse.org/360314 OS Awareness bug 360314]
+
−
 
+
−
 
+
−
== April 10th, 2012 ==
+
  
 
=== Attendees ===
 
=== Attendees ===
  
 
# Phil Mason (Broadcom)
 
# Phil Mason (Broadcom)
 +
# Alvaro Sanchez-Leon (Ericsson)
 +
# Marc-Andre Laperle (Ericsson)
 +
# Marc Dumais (Ericsson)
 +
# Tracy Miranda (Kichwa Coders)
 +
# Jonah Graham (Kichwa Coders)
 
# Mikhail Khodjaiants (Mentor)
 
# Mikhail Khodjaiants (Mentor)
−
# Jason Litton (Sage)
+
# Doug Schaefer (QNX)
−
# Bill Swanson (Tilera)
+
# Jeff Johnston (RedHat)
 +
# William Riley (Renesas)
 
# Marc Khouzam (Ericsson)
 
# Marc Khouzam (Ericsson)
  
 
=== Minutes ===
 
=== Minutes ===
−
''' Things for Juno'''
 
  
−
* Marc was planning on working on Multiple selection https://bugs.eclipse.org/bugs/show_bug.cgi?id=330974
+
* 8.8 RC1 this Monday, August 17th, 2015.  No features after that until CDT 9.0/Neon
−
** Mikhail mentioned that the Selection policy may be a problem
+
* Grouping [http://eclip.se/336876 bug 336876]
−
** Platform may require changes for selection policy
+
** Alvaro and Marc K are reviving Dobrin's work
−
** Already some selection policy problems are being seen
+
** Marc K will write proposed work to bug
−
** A good selection policy is important for usability, so it is important for the multi-selection feature
+
* GDB bp actions in CDT [http://eclip.se/473208 bug 473208]
 +
** Revisit bp action framework for CDT 9.0.  Updated 9.0 wiki for it.
 +
** Mikhail to open bugzillas on improvements that should be done
 +
** We want to hook running GDB commands to the existing GDB bp command framework.
 +
** GDB bp commands have some limitations in MI that we need to workaround
 +
** No time to work on it right now
 +
* Adding a context menu to run GDB script from debug view
 +
** Mikhail to submit a patch
 +
* The Attach to Application launch should disable auto build by default [http://eclip.se/474169 bug 474169]
 +
** Agreement to disable auto build for attach
 +
** We should also address the case of project-less debugging where building the project just does not make sense
 +
* Adding a breakpoint with "Add Line Breakpoint (C/C++)" is not reflected in vertical ruler [http://eclip.se/474179 bug 474179]
 +
** Current problem when not using absolute file path
 +
** We could use debugger to figure it out but the change is not trivial as the debugger is not always running
 +
** Jonah to submit patch to require using absolute path for CDT 8.8.
 +
** Discussion also lead to talking about displaying the different installations of a single platform breakpoint
 +
** Tracy and Jonah will see if they can get funding to work on this
 +
** Mikhail posted a patch to use detail pane to show installation information [https://git.eclipse.org/r/17181 Gerrit 17181]
 +
* Add support for gdb's "set substitute-path from to"
 +
** CDT path mappings were added before this support from GDB
 +
** Using GDB's feature instead would allow the GDB console to show all the proper paths
 +
** Can we use this GDB feature to power the CDT path mapping feature?
 +
* Support for multiple bp types on the same line
 +
** Marc-Andre tried to set a bp where there was already a dprintf
 +
** This may be a rare use-case.  Let's see if it comes up again.
  
−
* Debug testing for 4.2 ongoing.
+
== July 14th, 2015 ==
−
** Things look good for Tracepoints and Pin&Clon (which were broken with earlier builds of 4.2)
+
−
** Reverse debugging buttons don't work properly with 4.2.  Marc will report problems
+
  
−
* Jason will not be able to work on multicore at this time because Sage needs all-stop for multicore debug, but CDT is more focused on non-stop.o
+
=== Attendees ===
−
** Trying to get all-stop to work nicely with multicore may be something Sage can look at
+
  
−
''' Things post-Juno (Kepler) '''
+
# Phil Mason (Broadcom)
 +
# Marc Dumais (Ericsson)
 +
# Tracy Miranda (Kichwa Coders)
 +
# Mikhail Khodjaiants (Mentor)
 +
# Doug Schaefer (QNX)
 +
# William Riley (Renesas)
 +
# Marc Khouzam (Ericsson)
  
−
* Marc's current plans is to focus on adding features to the multicore visualizer
+
=== Minutes ===
  
−
''' Architecture-specific visualization'''
+
* 8.7/Mars release
−
* It was suggested that visualizations that are specific to different architectures (e.g., Tilera) could still be added to CDT.
+
** Went well, no surprises
−
** We can imagine having visualizations for many different architectures (Tilera, TI, Intel, etc)
+
* [https://wiki.eclipse.org/CDT/summitfall2015 CDT Summit Fall 2015] on the 14th of September in Ottawa
−
** This would allow users that have multiple different architectures without need to change their tool for each one
+
** Please sign up on wiki page
−
** Visualization is not the only factor however; connection with the backend (e.g., using GDB) may not be the same as what is in CDT.
+
* Release plan
 +
** 8.8 September 26th with Mars SR1 (new features allowed)
 +
** 8.9 Cancelled to focus all energies on 9.0, replaced with 8.8.1 February 26th with Mars SR2 (bug fix only)
 +
** 9.0 Major release June 2016
 +
* Branching strategy for release
 +
** 8.8 development continues on master until its release
 +
** 9.0 development starts on master once 8.8 is released
 +
** 8.8.1 fixes and release will be done on the cdt_8_8 branch
 +
* CDI will be '''removed''' from the CDT 9.0 release
 +
** Plugins will be removed
 +
** Marc will send an official email to notify of the necessary migration
 +
* o.e.remote continues to evolve to become an RSE replacement
 +
** File Browser is being discussed
 +
** Using it for CDT's remote debug will probably go to the 9.0 release so we can completely remove the dependency to RSE
 +
* LLDB support would be nice. Discussions in [http://eclip.se/405670 Bug 405670]
 +
** There seems to be two different MI implementations for LLDB
 +
** Are the LLDB MI implementations supporting MI events?
 +
* Next effort to improve extensibility of DSF-GDB
 +
** [http://eclip.se/469763 Bug 469763] to provide a top-level service class
 +
** We'll use the naming convention: GDB<serviceName>_HEAD
  
−
== March 13th, 2012 ==
+
== June 9th, 2015 ==
  
 
=== Attendees ===
 
=== Attendees ===
  
−
# Norman Yee (Analog Devices)
 
 
# Phil Mason (Broadcom)
 
# Phil Mason (Broadcom)
 +
# Marc Dumais (Ericsson)
 +
# Jonah Graham (Kichwa Coders)
 
# Mikhail Khodjaiants (Mentor)
 
# Mikhail Khodjaiants (Mentor)
−
# Bill Swanson (Tilera)
+
# Jeff Johnston (RedHat)
 +
# William Riley (Renesas)
 
# Marc Khouzam (Ericsson)
 
# Marc Khouzam (Ericsson)
  
 
=== Minutes ===
 
=== Minutes ===
  
−
'''Visualizer view '''
+
* Mars release
−
* Visualizer examples plugin was added to CDT with two examples
+
** William did the GDB Hardware debug testinging without any issues
−
** Problems Visualizer
+
* RCP Standalone debugger
−
** SourceGraph Visualizer
+
** CDT's update site now has an rcp and rcp-repository directory.  The first contains the RCP tar files, the second is update site for the RCP (that update site will make sense for future upgrades).
−
* The examples show different ways on how to extend the Visualizer framework.
+
** We plan on putting a direct link in CDT's download page to the RCP binaries and update site.
 +
** How can we advertise this?
 +
** Update N&N
 +
** Update Standalone debugger wiki page
 +
** Maybe Doug can blog about it?
 +
** We could put some info in the CDT documentation, although it is too late for 8.7
 +
** Is there a use case for the RCP Standalone debugger and the Standalone debugger scrip?
 +
* Remote debugging
 +
** GDB 7.10 will allow to use the remote binary even on the host.
 +
*** Won't work for stripped remote binaries
 +
*** Could be a problem if the bandwith between GDB and gdbserver is bad
 +
*** CDT will need to allwo the user to choose between using the remote binary or not
 +
*** https://bugs.eclipse.org/bugs/show_bug.cgi?id=400033#c46
 +
*** The 'stripped' binary problem can apply to local attach, where the process could have been run using a stripped binary
 +
** Automatic remote debugging could provide an option to automatically strip the binary before uploading it to the target
 +
* Interrupting issues
 +
** On slow targets, interrupt can take a long enough time that the user presses interrupt a second time, which can kill GDB
 +
** CDT should disable the interrupt button when an interrupt is pending.
 +
** This was in the context of setting breakpoints which require CDT to interrupt the target
 +
** GDB requires we interrupt the target to set breakpoints only on linux and only for native (not using gdbserver).  We will try to get this improved in GDB to not have this restriction and allow CDT to be simpler
 +
* Need to improve extensibility of DSF-GDB services [http://eclip.se/469763 Bug 469763]
 +
** Example of current situation:
 +
DSF-GDB provides:
 +
  GDBRunControl_7_2_NS extends GDBRunControl_7_0_NS
 +
someone specializes this by creating
 +
  MyPrivateGDBRunControl extends GDBRunControl_7_2_NS
 +
The day that CDT adds a new version like
 +
  GDBRunControl_7_9_NS extends GDBRunControl_7_2_NS
 +
the extending class MyPrivateGDBRunControl will not use GDBRunControl_7_9_NS
 +
unless the developer notices this new version. Both Mikhail and William confirmed
 +
they regularly have this issue.
  
−
'''Enhanced breakpoints'''
+
We propose to insert an empty class that will always be at the top.
−
* We see that Pawel is making good progress
+
Something like
 +
  GDBRunControl_NS_Head extends GDBRunControl_7_2_NS
 +
Extenders would use
 +
  MyPrivateGDBRunControl extends GDBRunControl_NS_Head
 +
When CDT wants to introduce GDBRunControl_7_9_NS, we would do it like this:
 +
  GDBRunControl_NS_Head extends GDBRunControl_7_9_NS extends GDBRunControl_7_2_NS
 +
which will allow MyPrivateGDBRunControl to automatically inherit from the new version.
 +
This change need not break the API and could be done easily anytime.
  
−
'''Expressions view additions'''
+
* Watchpoint using GDB's -location flag [http://eclip.se/469764 Bug 469764]
−
* Pawel posted some comments/suggestions to the bug
+
** Currently setting watchpoints to say ptr->a will cause the watchpoint to follow the expression.
 +
** If the value of ptr changes, the watchpoint will hit
 +
** Often, the user wants to know if the original ptr->a changes
 +
** GDB offers this by using the 'watch -location' flag
 +
** CDT should offer access to that
 +
** Jonah has confirmed that to workaround this limitation he has to first find the address of ptr->a and use that hard coded address to set the wathpoint
  
−
'''Grouping'''
+
== May 12th, 2015 ==
−
* Interest from Mentor, but nothing planned for the moment
+
−
 
+
−
== February 14th, 2012 ==
+
  
 
=== Attendees ===
 
=== Attendees ===
  
 +
# Andrew McLachlan (Analog Devices)
 
# Phil Mason (Broadcom)
 
# Phil Mason (Broadcom)
−
# Eugene Ostroukhov (Nvidia)
+
# Alvaro Sanchez-Leon (Ericsson)
−
# Bruce Griffith (Sage)
+
# Marc Dumais (Ericsson)
−
# Abeer Bagul (Tensilica)
+
# Mikhail Khodjaiants (Mentor)
−
# Bill Swanson (Tilera)
+
# William Riley (Renesas)
−
# Randy Rohrbach (Windriver)
+
 
# Marc Khouzam (Ericsson)
 
# Marc Khouzam (Ericsson)
  
 
=== Minutes ===
 
=== Minutes ===
  
−
'''General'''
+
* Mars release
−
* Why not much focus on multi-vendor debug solution so that plugins from one vendor be used into another CDT installation?
+
** 8.7 branch created.  Bugs should be committed to both cdt_8_7 and master
−
** Probably not an interesting business case for vendors
+
* Standalone debugger fails to launch with M6 [http://eclip.se/467109 Bug 467109]
−
** For others, they need to change the platform, so they can't work on someone else's IDE
+
** Marc K sees this on his machine.  Alvaro to try on his machine to confirm
−
* Marc will make time to review some contributions that are pending.  Anyone else?
+
* RCP Standalone debugger
 +
** Separate download to install
 +
** Easy to get working
 +
** Easy way to get users to use Eclipse without any setup
 +
** Patch under review
 +
* Docker contribution
 +
** Waiting for IP approval CORRECTION after meeting: IP Approval received. Contribution to Linux Tools done for M7. Contribution to CDT being updated for RC1
 +
** Plugins in LinuxTools to support Docker containers
 +
** Patch proposed for CDT to launch a binary inside a Docker container (similar to remote debugging)
 +
** Would be an optional feature of CDT
 +
* Register Grouping and Variable Objects for registers
 +
** Mikhail has continued work on this patch but has no time currently
 +
** Trying a new registers service with a second service on top to do the grouping
 +
** What are the registers listed that don't have names given by GDB?
 +
** We can fetch the values using -data-list-register-values and the index, but we don't have a name for the user
 +
** Without a name, it does not seem valuable for a user
 +
** Can't use varObj with this also, as it needs a name
 +
* RunControl Grouping
 +
** Marc K working on reviving Dobrin's grouping patch
 +
** Final goal is to support GDB's planned ITSet grouping feature
 +
* [https://wiki.eclipse.org/CDT/User/NewIn87#Exited_processes_shown_in_the_debug_view Showing Exited processes]
 +
* Other
 +
** GDB has a format to pad hex output with 0s.  This can be useful especially for registers
 +
** Should CDT use it?  Should it be another optional format for the user to choose from?
  
−
'''Visualizer view progress'''
+
== March 17th, 2015 ==
−
* [http://bugs.eclipse.org/335027 Bug 335027]
+
−
* Feature has been contributed!
+
−
* Bill nominated as committer.
+
−
* New&Noteworthy http://wiki.eclipse.org/CDT/User/NewIn90#Multicore_Visualizer_View
+
−
* Multi-select feature would be very useful
+
  
−
'''Enhanced breakpoints'''
+
=== Attendees ===
−
* Pawel and Randy are working on this.  Progress going well both in Platform and CDT
+
−
* Ability to create a breakpoint and specify its attributes at creation time
+
−
* Allowing to add more complex preferences to breakpoints
+
−
* Must verify how Tracepoints will be impacted
+
  
−
'''Expressions view additions'''
+
# Andrew McLachlan (Analog Devices)
−
* Contribution bug will be posted soon
+
# Phil Mason (Broadcom)
 +
# Alvaro Sanchez-Leon (Ericsson)
 +
# Marc-Andre Laperle (Ericsson)
 +
# Marc Dumais (Ericsson)
 +
# Mikhail Khodjaiants (Mentor)
 +
# Doug Schaefer (QNX)
 +
# William Riley (Renesas)
 +
# Marc Khouzam (Ericsson)
  
−
'''Grouping'''
+
=== Minutes ===
−
* No update
+
* Summary of CDT Summit/CDT Day/EclipseCon
 +
** Java 8
 +
** do we do it on master, it will break java 7, it should be done on the 9_0 branch
 +
** email to the list
 +
* cdt 9.0 for Mars+1 release (June 2016)
 +
** 9_0 branch where API breaking changes are allowed
 +
* Doug plans to split out native plugins into their own git repo and build them separately to provide them to others that should not depend on CDT
 +
* CDT 8.7 plans
 +
** Grouping feature to support
 +
*** Marc K has started looking at this again, based on the work from TI
 +
** Memory view fixes/improvements
 +
*** Alvaro working on this
 +
** VarObjects for Registers would be interesting.
 +
*** Currently we assume every register is under a group, but it may not be the right thing to do
 +
* Enhancement bug written to LaunchBar allowing to handle multiple launches/launch group http://eclip.se/462372
 +
** Mikhail has a patch that removes some duplications in the debug view in the case of the launch group
 +
* Patches needing review
 +
** A couple of breakpoint patches from Mikhail
 +
** William submitted a patch for managed build, will email the list to get noticed
  
−
== January 17th, 2012 ==
+
== February 5th, 2015 ==
  
 
=== Attendees ===
 
=== Attendees ===
  
−
# Norman Yee (Analog Devices)
 
 
# Phil Mason (Broadcom)
 
# Phil Mason (Broadcom)
−
# Eugene Ostroukhov (Nvidia)
+
# Alvaro Sanchez-Leon (Ericsson)
−
# Pete Macliesh (Tensilica)
+
# Marc Dumais (Ericsson)
−
# Abeer Bagul (Tensilica)
+
# Mikhail Khodjaiants (Mentor)
−
# Bill Swanson (Tilera)
+
# Vladimir Prus (Mentor)
−
# Doug Schaefer (Windriver)
+
# Doug Schaefer (QNX)
 +
# Jeff Johnston (RedHat)
 
# Marc Khouzam (Ericsson)
 
# Marc Khouzam (Ericsson)
  
 
=== Minutes ===
 
=== Minutes ===
 +
* [https://wiki.eclipse.org/CDT/summitecon2015 CDT Summit/CDT Day]
 +
** Planning continues.  10 attendees have signed up so far.  Based on last year, we expect more though
 +
* CDT 8.6 release
 +
** [https://wiki.eclipse.org/CDT/Manual_Testing Joint testing] to be done
 +
** We hope to have it done by the end of this week
 +
** Everything is on track for the release
 +
* Next CDT release to be 8.7
 +
** Less than two months left until API freeze for Mars, and it does not seem anyone has plans or needs to break the API
 +
** Doug [https://dev.eclipse.org/mhonarc/lists/cdt-dev/msg28861.html posted to the list] to see if there was any concerns about that
 +
* CDT for Mars
 +
** work continues for o.e.remote
 +
** LaunchBar is being updated to follow o.e.remote new APIs
 +
** Autotools will need to be updated as well
 +
** Still planning on removing CDT's dependency to RSE for Mars (Remote Debug launch)
 +
** Connections should not be part of launch configuration as connections are user-specific.  Instead using an OSGI service will be better.
 +
* FindBugs
 +
** Marc to post a patch to enable running FindBugs and PMD as a build profile.
 +
** We can have the nightly build use that profile and see if that proves valuable.
 +
** This will increase the build by about 20 minutes but provide valuable feedback
 +
** The verify job will not run FindBugs
 +
* Visual Studio support contribution
 +
** [https://dev.eclipse.org/mhonarc/lists/cdt-dev/msg28851.html Guy B offered to contribute] a Visual Studio integration to CDT
 +
** Sounds like it can be interesting to some.
 +
** Guy was asked to open a bug to discuss the contribution process
 +
== January 13th, 2015 ==
  
−
'''Visualizer view progress'''
+
=== Attendees ===
−
* [http://bugs.eclipse.org/335027 Bug 335027]
+
−
* More feature have been added: selection, synchronization with Debug View, toolbar, context menu
+
−
* Marc finishing some proposed refactoring before contribution is started
+
−
* CQ should be opened this week to contribute.  Will go into master branch as an optional feature.
+
−
* Demo was given.  Very cool!
+
−
* Wasted space in visualizer view.  Can CPUs 'hug' Cores to avoid that waste?  Cores should stay square.
+
−
* Need multi-selection run-control for visualizer [http://bugs.eclipse.org/330974 Bug 330974].  Marc will contact Dobrin to see if any progress was made.
+
−
* This could apply to target management to show what is running on the target.  Would this be a second visualizer view for TM or a different visualizer in the same view?  This brings up the nice applicability of Pin&Clone.
+
−
* Pin and clone would apply well to visualizer
+
−
* How do we show process info in visualizer?
+
−
** Process on cores don't really matter, what matters is what threads belong to the same process
+
−
** brightness can be used to show all threads in the same process as the one selected
+
  
−
'''Expressions view additions'''
+
# Alvaro Sanchez-Leon (Ericsson)
−
* Enhancement to allow the expressions view to use Working Sets.  The idea is to use Pin&Clone and Working sets to show only the expressions for a specific core (i.e. context)
+
# Marc Dumais (Ericsson)
−
* Demo
+
# Mikhail Khodjaiants (Mentor)
−
** Nice demo showing how working groups and pin&clone can be used to show a subset of expressions and pin them to a core
+
# Doug Schaefer (QNX)
−
** Working groups have been added to DSF and allow to filter the expressions view
+
# Jeff Johnston (RedHat)
−
** Wizard was also added to create working groups and to easily pin them.
+
# William Riley (Renesas)
−
* Abeer will open a bugzilla to contribute this feature to CDT.
+
# Marc Khouzam (Ericsson)
 +
 
 +
=== Minutes ===
 +
* CDT Summit/CDT Day
 +
** CDT Summit wiki.  Please sign up.
 +
** CDT Day planned. 7 talks on different topics related to CDT
 +
* CDT 8.6 anything missing?
 +
** Nothing major planned for the last week
 +
* Register grouping committed. https://wiki.eclipse.org/CDT/User/NewIn86#Register_grouping
 +
** VarObjects for Registers would be interesting.
 +
** If time allows, Mikhail may have a look again.
 +
* All Debug JUnit tests running on HIPP using all of GDB >= 7.1
 +
**  Local tests all pass: https://hudson.eclipse.org/cdt/job/debug-tests-master-all-gdb-versions/
 +
** Remote tests down to 7 failures: https://hudson.eclipse.org/cdt/job/debug-remote-tests-master-all-gdb-versions/
 +
* Older GDB support
 +
** In some cases, probably with more recent GCCs, GDB 7.0 cannot step over printf (and maybe other issues)
 +
** We discussed and approved only supporting GDB 7.1 and higher
 +
** We won't remove the code supporting older GDBs but we won't work on making those work
 +
** We will announce in N&N and make it part of the 8.6 review record
 +
* SWTBot testing for Debug/CDT https://git.eclipse.org/r/#/c/35988/
 +
** Proof of concept that provides one test.
 +
** Marc K to review and commit very soon to get the infrastructure in
 +
* LaunchBar will be part of Mars
 +
** Doug will work on a CDT remote launch using o.e.remote
 +
** Doug got request to have a UI for multiple launches working with the launch bar
 +
* Launch UI
 +
** Mikhail has started work on it again
  
 
= Older minutes of meeting =
 
= Older minutes of meeting =
  
 +
[[CDT/MultiCoreDebugWorkingGroup/calls/minutes/2014 | 2014 Minutes of meetings]]<br>
 +
[[CDT/MultiCoreDebugWorkingGroup/calls/minutes/2013 | 2013 Minutes of meetings]]<br>
 +
[[CDT/MultiCoreDebugWorkingGroup/calls/minutes/2012 | 2012 Minutes of meetings]]<br>
 
[[CDT/MultiCoreDebugWorkingGroup/calls/minutes/2011 | 2011 Minutes of meetings]]<br>
 
[[CDT/MultiCoreDebugWorkingGroup/calls/minutes/2011 | 2011 Minutes of meetings]]<br>
 
[[CDT/MultiCoreDebugWorkingGroup/calls/minutes/2010 | 2010 Minutes of meetings]]<br>
 
[[CDT/MultiCoreDebugWorkingGroup/calls/minutes/2010 | 2010 Minutes of meetings]]<br>

Latest revision as of 16:06, 16 January 2020

Multicore Debug Workgroup Minutes of Meetings

January 12th, 2016

Attendees

  1. Phil Mason (Broadcom)
  2. Alvaro Sanchez-Leon (Ericsson)
  3. Marc Dumais (Ericsson)
  4. Jonah Graham (Kichwa Coders)
  5. Mikhail Khodjaiants (Mentor)
  6. Marc Khouzam (Ericsson)

Minutes

  • CDT call and Debug call will be merged. We'll hold a single monthly call on the first Tuesday of the month.
  • Address breakpoints don't work well with multi-process
    • Mikhail to find existing patch for this problem
  • Showing an entry for each installation of a breakpoint in the breakpoint view
    • Continued interest in that feature from Kichwa Coders, Ericsson
    • Marc K to schedule a breakpoint call to help define what work would be needed
  • CDT 8.8.1 release on track. Some sanity tests should be done around RC1 or RC2 in a couple of weeks.
  • Grouping feature continues. More complex than expected but progressing.
    • Kichwas Coders have been able to make use of some of those changes from the Gerrit review. They will give feedback if any.
  • Substitute path contribution
    • Marc K to start with review https://git.eclipse.org/r/#/c/63288/
    • Main review for path mapping now re-uses exiting UI and maps it to GDB backend when available
      • When using GDB path mapping _all_ paths coming from GDB are properly mapped
      • Cannot remove the bp synchronizer usage of path map because not all backends supports; however we should update the source service to behave properly when using GDB path mapping; Jonah's patch should cover for that.
  • Full GDB Console
    • We hope to have support from GDB in GDB 7.11 (fingers crossed)
    • Integration in CDT with a GDB prototype is going well
    • Exact same look and feel for user except that the console has all the feature of the real GDB CLI
    • Does the new console support giving python commands? Setting breakpoint commands? etc
  • Reverse debugging with btrace
    • Review difficult because UI changes are intrusive
    • Contribution needs a CQ and the deadline is Feb 12th for CQ submission
    • Special hardware is necessary to fully test the patch; luckily Ericsson has access to such hardware
    • Marc K still hopes to figure things out in time
  • CDT 9.0: People are encouraged to look at actions at https://wiki.eclipse.org/CDT/APIBreakages

December 1st, 2015

Attendees

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

Minutes

  • CDT Arduino
    • Meet-up to be held Dec 2nd. Doug will send invite to the list.
    • GDB Stub now works on some Arduino board and CDT was able to hook to it using our GDB integration
  • Multiple people interested in using RCPTT but no progress yet
  • Grouping
    • Issue with Deltas. When there are multiple entries of the same element, which one should be expanded, selected. Work continues.
  • Substitute path feature Bug 472765
    • New patch version should be posted this week or next
      • Will use GDB behing CDT's current path mapping source container
  • GDB is expected to soon provide both a MI console and a separate CLI console towards the same GDB session
    • We plan on integrating this in CDT to provide a full GDB console for Neon
      • Recommendation to look at o.e.remote.console and mimic that approach of integrating the terminal widget into the console view
      • The widget is in o.e.tm.terminal.control
    • Existing MI events will keep Eclipse in sync with commands given through the GDB console
    • Kichwa Coders is looking at providing a Pyton/EASE console. This may be great to integrate with the GDB console, if possible. More discussions needed to clarify.
    • Taking this new GDB feature further could allow to 'attach' CDT to an ongoing GDB debugging session. This would allow users to decide to use eclipse even after they have started and progressed in their GDB debug session. More investigation needed.
  • Reverse debugging with btrace
    • Feature supported by newer Intel processors
    • We need to be careful not to pollute the UI with options/dialogues that are not available to most users and try to only show such extensions when they are supported (by the processor in this case).
  • CDT 9.0 progress
    • Some deprecated API have been removed. More patches pending.
  • New plan is to hold the Debug call and CDT call together each month on the first Tuesday of the month (current CDT slot)

October 13th, 2015

Attendees

  1. Alvaro Sanchez-Leon (Ericsson)
  2. Marc Dumais (Ericsson)
  3. Tracy Miranda (Kichwa Coders)
  4. Jonah Graham (Kichwa Coders)
  5. Mikhail Khodjaiants (Mentor)
  6. Doug Schaefer (QNX)
  7. William Riley (Renesas)
  8. Marc Khouzam (Ericsson)

Minutes

  • Grouping
    • New patch posted to gerrit https://git.eclipse.org/r/#/c/46107/
      • Grouping works but the views don't refresh
      • Support for Groups containing other groups although the delta handling not done yet
    • Implementation mostly in DSF-GDB
    • New VM node for a group
    • Kichwa Coders are interested also
  • Substitute path feature Bug 472765
    • First review was done and Jonah is working on a new version
    • Currently, it is a new source container the user much choose
      • Doug suggests making it the default behind the scene of the existing path mapping
      • Jonah will write a patch re-using the existing path mapping
      • This will avoid the issue of showing a source container that may not be supported if the backend does not support it
      • It will also make it transparent to the user
      • It is better to use GDB to do the path mapping as it will work for commands from the gdb console also
  • CDT 9.0 progress
    • Doug faces issues with the launch target changing just before the launch starts
      • Launch delegate should be in platform. Doug won't have time for Neon, but after.
      • Launch delegates in CDT are too generic and should be split up
    • Using API filters to better control changes and keep API Tool highlighting API-breaking changes?
      • No, change the version now to make it clear there are API breaking changes. It is felt that will be better for users.
  • Stand-alone Debugger script vs Stand-alone RCP
    • The script provides a way to launch a debug session from the command-line using an existing eclipse installation. It is a different scenario than downloading the RCP installation.
    • Kichwa Coders have a feature that allows to launch the debugger into a running eclipse using a port. Something of the sort would be nice in open-source
    • Standalone script reduces the content of the launched eclipse. This is to stick to the debugger functionality. It does not provide build feature, but maybe it should
  • Suggestion to add features to CPP package to make then known
    • The real problem mis that we need to better advertise the work we do
    • Answer questions on Stack Overflow would help the community
    • More blogging would help
  • UI testing
    • RCPTT looks promising
    • A contribution of a test or two using RCPTT for CDT would help get people familiar with it

August 11th, 2015

Attendees

  1. Phil Mason (Broadcom)
  2. Alvaro Sanchez-Leon (Ericsson)
  3. Marc-Andre Laperle (Ericsson)
  4. Marc Dumais (Ericsson)
  5. Tracy Miranda (Kichwa Coders)
  6. Jonah Graham (Kichwa Coders)
  7. Mikhail Khodjaiants (Mentor)
  8. Doug Schaefer (QNX)
  9. Jeff Johnston (RedHat)
  10. William Riley (Renesas)
  11. Marc Khouzam (Ericsson)

Minutes

  • 8.8 RC1 this Monday, August 17th, 2015. No features after that until CDT 9.0/Neon
  • Grouping bug 336876
    • Alvaro and Marc K are reviving Dobrin's work
    • Marc K will write proposed work to bug
  • GDB bp actions in CDT bug 473208
    • Revisit bp action framework for CDT 9.0. Updated 9.0 wiki for it.
    • Mikhail to open bugzillas on improvements that should be done
    • We want to hook running GDB commands to the existing GDB bp command framework.
    • GDB bp commands have some limitations in MI that we need to workaround
    • No time to work on it right now
  • Adding a context menu to run GDB script from debug view
    • Mikhail to submit a patch
  • The Attach to Application launch should disable auto build by default bug 474169
    • Agreement to disable auto build for attach
    • We should also address the case of project-less debugging where building the project just does not make sense
  • Adding a breakpoint with "Add Line Breakpoint (C/C++)" is not reflected in vertical ruler bug 474179
    • Current problem when not using absolute file path
    • We could use debugger to figure it out but the change is not trivial as the debugger is not always running
    • Jonah to submit patch to require using absolute path for CDT 8.8.
    • Discussion also lead to talking about displaying the different installations of a single platform breakpoint
    • Tracy and Jonah will see if they can get funding to work on this
    • Mikhail posted a patch to use detail pane to show installation information Gerrit 17181
  • Add support for gdb's "set substitute-path from to"
    • CDT path mappings were added before this support from GDB
    • Using GDB's feature instead would allow the GDB console to show all the proper paths
    • Can we use this GDB feature to power the CDT path mapping feature?
  • Support for multiple bp types on the same line
    • Marc-Andre tried to set a bp where there was already a dprintf
    • This may be a rare use-case. Let's see if it comes up again.

July 14th, 2015

Attendees

  1. Phil Mason (Broadcom)
  2. Marc Dumais (Ericsson)
  3. Tracy Miranda (Kichwa Coders)
  4. Mikhail Khodjaiants (Mentor)
  5. Doug Schaefer (QNX)
  6. William Riley (Renesas)
  7. Marc Khouzam (Ericsson)

Minutes

  • 8.7/Mars release
    • Went well, no surprises
  • CDT Summit Fall 2015 on the 14th of September in Ottawa
    • Please sign up on wiki page
  • Release plan
    • 8.8 September 26th with Mars SR1 (new features allowed)
    • 8.9 Cancelled to focus all energies on 9.0, replaced with 8.8.1 February 26th with Mars SR2 (bug fix only)
    • 9.0 Major release June 2016
  • Branching strategy for release
    • 8.8 development continues on master until its release
    • 9.0 development starts on master once 8.8 is released
    • 8.8.1 fixes and release will be done on the cdt_8_8 branch
  • CDI will be removed from the CDT 9.0 release
    • Plugins will be removed
    • Marc will send an official email to notify of the necessary migration
  • o.e.remote continues to evolve to become an RSE replacement
    • File Browser is being discussed
    • Using it for CDT's remote debug will probably go to the 9.0 release so we can completely remove the dependency to RSE
  • LLDB support would be nice. Discussions in Bug 405670
    • There seems to be two different MI implementations for LLDB
    • Are the LLDB MI implementations supporting MI events?
  • Next effort to improve extensibility of DSF-GDB
    • Bug 469763 to provide a top-level service class
    • We'll use the naming convention: GDB<serviceName>_HEAD

June 9th, 2015

Attendees

  1. Phil Mason (Broadcom)
  2. Marc Dumais (Ericsson)
  3. Jonah Graham (Kichwa Coders)
  4. Mikhail Khodjaiants (Mentor)
  5. Jeff Johnston (RedHat)
  6. William Riley (Renesas)
  7. Marc Khouzam (Ericsson)

Minutes

  • Mars release
    • William did the GDB Hardware debug testinging without any issues
  • RCP Standalone debugger
    • CDT's update site now has an rcp and rcp-repository directory. The first contains the RCP tar files, the second is update site for the RCP (that update site will make sense for future upgrades).
    • We plan on putting a direct link in CDT's download page to the RCP binaries and update site.
    • How can we advertise this?
    • Update N&N
    • Update Standalone debugger wiki page
    • Maybe Doug can blog about it?
    • We could put some info in the CDT documentation, although it is too late for 8.7
    • Is there a use case for the RCP Standalone debugger and the Standalone debugger scrip?
  • Remote debugging
    • GDB 7.10 will allow to use the remote binary even on the host.
      • Won't work for stripped remote binaries
      • Could be a problem if the bandwith between GDB and gdbserver is bad
      • CDT will need to allwo the user to choose between using the remote binary or not
      • https://bugs.eclipse.org/bugs/show_bug.cgi?id=400033#c46
      • The 'stripped' binary problem can apply to local attach, where the process could have been run using a stripped binary
    • Automatic remote debugging could provide an option to automatically strip the binary before uploading it to the target
  • Interrupting issues
    • On slow targets, interrupt can take a long enough time that the user presses interrupt a second time, which can kill GDB
    • CDT should disable the interrupt button when an interrupt is pending.
    • This was in the context of setting breakpoints which require CDT to interrupt the target
    • GDB requires we interrupt the target to set breakpoints only on linux and only for native (not using gdbserver). We will try to get this improved in GDB to not have this restriction and allow CDT to be simpler
  • Need to improve extensibility of DSF-GDB services Bug 469763
    • Example of current situation:
DSF-GDB provides: 
  GDBRunControl_7_2_NS extends GDBRunControl_7_0_NS
someone specializes this by creating
  MyPrivateGDBRunControl extends GDBRunControl_7_2_NS
The day that CDT adds a new version like
  GDBRunControl_7_9_NS extends GDBRunControl_7_2_NS
the extending class MyPrivateGDBRunControl will not use GDBRunControl_7_9_NS
unless the developer notices this new version. Both Mikhail and William confirmed
they regularly have this issue.

We propose to insert an empty class that will always be at the top.
Something like
  GDBRunControl_NS_Head extends GDBRunControl_7_2_NS
Extenders would use
  MyPrivateGDBRunControl extends GDBRunControl_NS_Head
When CDT wants to introduce GDBRunControl_7_9_NS, we would do it like this:
  GDBRunControl_NS_Head extends GDBRunControl_7_9_NS extends GDBRunControl_7_2_NS
which will allow MyPrivateGDBRunControl to automatically inherit from the new version.
This change need not break the API and could be done easily anytime.
  • Watchpoint using GDB's -location flag Bug 469764
    • Currently setting watchpoints to say ptr->a will cause the watchpoint to follow the expression.
    • If the value of ptr changes, the watchpoint will hit
    • Often, the user wants to know if the original ptr->a changes
    • GDB offers this by using the 'watch -location' flag
    • CDT should offer access to that
    • Jonah has confirmed that to workaround this limitation he has to first find the address of ptr->a and use that hard coded address to set the wathpoint

May 12th, 2015

Attendees

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

Minutes

  • Mars release
    • 8.7 branch created. Bugs should be committed to both cdt_8_7 and master
  • Standalone debugger fails to launch with M6 Bug 467109
    • Marc K sees this on his machine. Alvaro to try on his machine to confirm
  • RCP Standalone debugger
    • Separate download to install
    • Easy to get working
    • Easy way to get users to use Eclipse without any setup
    • Patch under review
  • Docker contribution
    • Waiting for IP approval CORRECTION after meeting: IP Approval received. Contribution to Linux Tools done for M7. Contribution to CDT being updated for RC1
    • Plugins in LinuxTools to support Docker containers
    • Patch proposed for CDT to launch a binary inside a Docker container (similar to remote debugging)
    • Would be an optional feature of CDT
  • Register Grouping and Variable Objects for registers
    • Mikhail has continued work on this patch but has no time currently
    • Trying a new registers service with a second service on top to do the grouping
    • What are the registers listed that don't have names given by GDB?
    • We can fetch the values using -data-list-register-values and the index, but we don't have a name for the user
    • Without a name, it does not seem valuable for a user
    • Can't use varObj with this also, as it needs a name
  • RunControl Grouping
    • Marc K working on reviving Dobrin's grouping patch
    • Final goal is to support GDB's planned ITSet grouping feature
  • Showing Exited processes
  • Other
    • GDB has a format to pad hex output with 0s. This can be useful especially for registers
    • Should CDT use it? Should it be another optional format for the user to choose from?

March 17th, 2015

Attendees

  1. Andrew McLachlan (Analog Devices)
  2. Phil Mason (Broadcom)
  3. Alvaro Sanchez-Leon (Ericsson)
  4. Marc-Andre Laperle (Ericsson)
  5. Marc Dumais (Ericsson)
  6. Mikhail Khodjaiants (Mentor)
  7. Doug Schaefer (QNX)
  8. William Riley (Renesas)
  9. Marc Khouzam (Ericsson)

Minutes

  • Summary of CDT Summit/CDT Day/EclipseCon
    • Java 8
    • do we do it on master, it will break java 7, it should be done on the 9_0 branch
    • email to the list
  • cdt 9.0 for Mars+1 release (June 2016)
    • 9_0 branch where API breaking changes are allowed
  • Doug plans to split out native plugins into their own git repo and build them separately to provide them to others that should not depend on CDT
  • CDT 8.7 plans
    • Grouping feature to support
      • Marc K has started looking at this again, based on the work from TI
    • Memory view fixes/improvements
      • Alvaro working on this
    • VarObjects for Registers would be interesting.
      • Currently we assume every register is under a group, but it may not be the right thing to do
  • Enhancement bug written to LaunchBar allowing to handle multiple launches/launch group http://eclip.se/462372
    • Mikhail has a patch that removes some duplications in the debug view in the case of the launch group
  • Patches needing review
    • A couple of breakpoint patches from Mikhail
    • William submitted a patch for managed build, will email the list to get noticed

February 5th, 2015

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. Jeff Johnston (RedHat)
  8. Marc Khouzam (Ericsson)

Minutes

  • CDT Summit/CDT Day
    • Planning continues. 10 attendees have signed up so far. Based on last year, we expect more though
  • CDT 8.6 release
    • Joint testing to be done
    • We hope to have it done by the end of this week
    • Everything is on track for the release
  • Next CDT release to be 8.7
    • Less than two months left until API freeze for Mars, and it does not seem anyone has plans or needs to break the API
    • Doug posted to the list to see if there was any concerns about that
  • CDT for Mars
    • work continues for o.e.remote
    • LaunchBar is being updated to follow o.e.remote new APIs
    • Autotools will need to be updated as well
    • Still planning on removing CDT's dependency to RSE for Mars (Remote Debug launch)
    • Connections should not be part of launch configuration as connections are user-specific. Instead using an OSGI service will be better.
  • FindBugs
    • Marc to post a patch to enable running FindBugs and PMD as a build profile.
    • We can have the nightly build use that profile and see if that proves valuable.
    • This will increase the build by about 20 minutes but provide valuable feedback
    • The verify job will not run FindBugs
  • Visual Studio support contribution
    • Guy B offered to contribute a Visual Studio integration to CDT
    • Sounds like it can be interesting to some.
    • Guy was asked to open a bug to discuss the contribution process

January 13th, 2015

Attendees

  1. Alvaro Sanchez-Leon (Ericsson)
  2. Marc Dumais (Ericsson)
  3. Mikhail Khodjaiants (Mentor)
  4. Doug Schaefer (QNX)
  5. Jeff Johnston (RedHat)
  6. William Riley (Renesas)
  7. Marc Khouzam (Ericsson)

Minutes

  • CDT Summit/CDT Day
    • CDT Summit wiki. Please sign up.
    • CDT Day planned. 7 talks on different topics related to CDT
  • CDT 8.6 anything missing?
    • Nothing major planned for the last week
  • Register grouping committed. https://wiki.eclipse.org/CDT/User/NewIn86#Register_grouping
    • VarObjects for Registers would be interesting.
    • If time allows, Mikhail may have a look again.
  • All Debug JUnit tests running on HIPP using all of GDB >= 7.1
  • Older GDB support
    • In some cases, probably with more recent GCCs, GDB 7.0 cannot step over printf (and maybe other issues)
    • We discussed and approved only supporting GDB 7.1 and higher
    • We won't remove the code supporting older GDBs but we won't work on making those work
    • We will announce in N&N and make it part of the 8.6 review record
  • SWTBot testing for Debug/CDT https://git.eclipse.org/r/#/c/35988/
    • Proof of concept that provides one test.
    • Marc K to review and commit very soon to get the infrastructure in
  • LaunchBar will be part of Mars
    • Doug will work on a CDT remote launch using o.e.remote
    • Doug got request to have a UI for multiple launches working with the launch bar
  • Launch UI
    • Mikhail has started work on it again

Older minutes of meeting

2014 Minutes of meetings
2013 Minutes of meetings
2012 Minutes of meetings
2011 Minutes of meetings
2010 Minutes of meetings

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This page was last modified 16:06, 16 January 2020 by Eclipsepedia anonymous user Unnamed Poltroon.

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