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Difference between revisions of "CDT/Obsolete/MultiCoreDebugWorkingGroup"

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(Multi-Core Debugging)
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= '''Multi-Core Debugging Work Group''' =
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= Introduction =
  
This page documents the activities of CDT's Multi-Core Working Group.  This group aims to bring together different people from the community to jointly work on developing multi-core debugging for CDT.  The group was first proposed at the CDT Summit 2010 and the suggestion was well received.
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This page documents the activities of CDT's Multi-Core Working Group.  This group aims to bring together different people from the community to jointly work on developing multi-core debugging for CDT.  The group was first proposed at the [http://wiki.eclipse.org/CDT/summitfall2010 CDT Summit 2010] and the suggestion was well received.
  
Any one interested in helping in this effort is welcome to follow or join the group.
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Although this effort does cover the debugging of target with multiple cores, we use the term ''Multi-core debugging'' in a much wider sense.  ''Multi-core debugging'' is meant to describe the simultaneous debugging of multiple cores, processes, threads, or other objects which are represented in standard debugger views.
  
=== Conference calls ===
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Any one interested in helping in this effort is welcome to follow or join the group. Teleconferences are held on a regular basis to discuss progress, issues, features, tasks, etc.<br>
  
Conference calls are held on a regular basis to discuss progress, issues, features, tasks, etc.<br>
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= Next Teleconference =
Currently, we have conference calls every two weeks.  The next call info is:
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: Tuesday November 30th, 2010 at 11 a.m. Ottawa time
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Jointly with the CDT call. Please refer to the [[CDT/calls | CDT Call wiki page]]<br>
: Canada and US Toll Free - (877) 748-5444
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: [[CDT/MultiCoreDebugWorkingGroup/calls | International Numbers]]
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: Conference ID - 620 4947
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: [[CDT/MultiCoreDebugWorkingGroup/calls/minutes | Upcoming agenda and previous minutes]]
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== Multi-Core Debugging ==
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= Previous minutes of meetings =
  
Although this effort covers the debugging of target with multiple cores, we use the term ''Multi-core debugging'' in much wider sense.  ''Multi-core debugging'' is meant to describe the simultaneous debugging of multiple cores, processes, threads, or other objects which are represented in standard debugger views.
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Minutes up to January 2016 can be found here:
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[[CDT/MultiCoreDebugWorkingGroup/calls/minutes | Previous minutes of meetings]].
  
=== Suggested features ===
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All future minutes will be documented on the [[CDT/calls | CDT Call wiki page]].
  
# Grouping of debug view elements
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= Features of current interest =
# Debug operations (step, resume) on groups
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# Hiding of debug view elements
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# User-selectable Debug View layouts
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# Pin and Clone of debugging views
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# Grid view
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=== Features already completed ===
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The following is a list of features have had some effort invested in them but are not ready for release.  The effort might have stopped due to lack of resources, but could be easily revived.
  
[[CDT/MultiCoreDebugWorkingGroup/CompletedFeatures | List of features that have already been implemented.]]
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# [[CDT/MultiCoreDebugWorkingGroup/MultiLevelHierarchy | Multi Level Hierarchy in the Debug View]]
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# [[CDT/MultiCoreDebugWorkingGroup/DebugElementsGrouping | Grouping of debug view elements]]
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# [[CDT/MultiCoreDebugWorkingGroup/DebugElementsHiding | Hiding of debug view elements]]
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# [[CDT/MultiCoreDebugWorkingGroup/DebugViewLayouts | User-selectable Debug View layouts]]
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# [[CDT/MultiCoreDebugWorkingGroup/VisualizerView | Visualizer View]]
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#* A first version of the Multicore Visualizer as well as the Visualizer Framework are part of the Juno release
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#* Many enhancements are still of interest.
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# [[CDT/MultiCoreDebugWorkingGroup/SynchronizedOperations | Synchronized/Grouped Run Control Operations]]
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#* User defines a group (cores or processes or threads) which makes up the application, and can perform application-level operations on it
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# [[CDT/MultiCoreDebugWorkingGroup/GlobalBreakpoints | Global breakpoints]]
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# [[CDT/MultiCoreDebugWorkingGroup/EnhancedBreakpoints | Enhanced Breakpoint Support]]
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# [[CDT/MultiCoreDebugWorkingGroup/NewLaunchUI | New Launch UI]]
  
=== Use-cases ===
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= Features already completed =
  
[[CDT/MultiCoreDebugWorkingGroup/UseCases | Description of the set of use-cases proposed to be covered.]]
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[[CDT/MultiCoreDebugWorkingGroup/CompletedFeatures | List of features that have already been implemented.]]
 
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=== Current issues ===
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# DSF sees to have a limitation where it only accepts a single level of IContainerDMContext.
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=== Multi Level Hierarchy in the Debug View using DSF (Dobrin)===
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Currently Platform Flexible enables the debug view to show any hierarchy of objects.
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DSF currently has defined two data model interfaces IExecutionDMContext and IContainerDMContext
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and two view models classes: AbstractThreadVMNode and AbstractContainerVMNode. <br>
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I would like to explore these interfaces and the classes using them to deliver the following features:
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* Containers can be recursive - each container can have its own stack and/or other child containers.
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* The user should be able to filter and show container nodes or container types.
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* The user should be able to group and ungroup container nodes or container types.
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* Filtering and grouping nodes can be both with the involvement of the back end debugger or not.
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* The user should be able to change the way the contaniers are presented in the debug view without changing the container's hierarchy. 
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* The containers can have types so the user can filter or group containers by container type.
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I believe these features are driven from the following use cases:
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User cases:
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* UC1:
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The debug view shows hierarchy "core – process - thread"
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The user can switch the hierarchy to show "process – thread – core"
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* UC2:
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The debug view shows hierarchy "core – thread – process"
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The user can hide and show all "core" nodes. All "thread" nodes will appear as children of the launch node.
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The user can hide specific core from the hierarchy. Its "thread" nodes can either hide, or they can become children of the launch node.
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* UC3:
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The user of a multicore system can hide and show the boards the cores / devices / connections the core belongs to.
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* UC4:
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The user can create custom groups that he can use for synchronized stepping / running / halting.
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* UC5:
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The user can hide in the debug view all threads and processes with names that matches a specific pattern.
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Currently I know of two Bugzilla entries related to the idea:
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= Potential future features =
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[https://bugs.eclipse.org/bugs/show_bug.cgi?id=240208 Bug 240208] A single VMNode should represent all execution levels<br>
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[https://bugs.eclipse.org/bugs/show_bug.cgi?id=306868 Bug 306868] DefaultVMModelProxyStrategy does not generate proper delta with recursive VM nodes<br>
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I think we can reuse the first one to further discussion on the topic.
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[[CDT/MultiCoreDebugWorkingGroup/PotentialFeatures | List of features that have been proposed]] and may be addressed in the future.
To discuss requirements and use cases we can use this page.
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=== Related Information ===
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= Use Cases =
  
[http://wiki.eclipse.org/CDT/designs/MultiCoreDebug Original CDT Multi-Core wiki page]<br>
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* [[CDT/MultiCoreDebugWorkingGroup/UseCaseKernelDebug | Kernel Debug (also: bare-metal/bootloader debug)]]
[http://wiki.eclipse.org/PinAndClone Pin & Clone effort]
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* [[CDT/MultiCoreDebugWorkingGroup/UseCaseEmbeddedApplicationDebug | Embedded Application Debug]]
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** [[CDT/MultiCoreDebugWorkingGroup/UseCaseApplicationDebug | Develop-on-Target (local application debug)]]

Revision as of 10:31, 29 January 2016

Introduction

This page documents the activities of CDT's Multi-Core Working Group. This group aims to bring together different people from the community to jointly work on developing multi-core debugging for CDT. The group was first proposed at the CDT Summit 2010 and the suggestion was well received.

Although this effort does cover the debugging of target with multiple cores, we use the term Multi-core debugging in a much wider sense. Multi-core debugging is meant to describe the simultaneous debugging of multiple cores, processes, threads, or other objects which are represented in standard debugger views.

Any one interested in helping in this effort is welcome to follow or join the group. Teleconferences are held on a regular basis to discuss progress, issues, features, tasks, etc.

Next Teleconference

Jointly with the CDT call. Please refer to the CDT Call wiki page

Previous minutes of meetings

Minutes up to January 2016 can be found here: Previous minutes of meetings.

All future minutes will be documented on the CDT Call wiki page.

Features of current interest

The following is a list of features have had some effort invested in them but are not ready for release. The effort might have stopped due to lack of resources, but could be easily revived.

  1. Multi Level Hierarchy in the Debug View
  2. Grouping of debug view elements
  3. Hiding of debug view elements
  4. User-selectable Debug View layouts
  5. Visualizer View
    • A first version of the Multicore Visualizer as well as the Visualizer Framework are part of the Juno release
    • Many enhancements are still of interest.
  6. Synchronized/Grouped Run Control Operations
    • User defines a group (cores or processes or threads) which makes up the application, and can perform application-level operations on it
  7. Global breakpoints
  8. Enhanced Breakpoint Support
  9. New Launch UI

Features already completed

List of features that have already been implemented.

Potential future features

List of features that have been proposed and may be addressed in the future.

Use Cases

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