[Bug mi/30356] New: gdb/mi equivalent for "checkpoint"

[Bug mi/30356] New: gdb/mi equivalent for "checkpoint"

[epasveer at att dot net]

https://sourceware.org/bugzilla/show_bug.cgi?id=30356

            Bug ID: 30356
           Summary: gdb/mi equivalent for "checkpoint"
           Product: gdb
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: mi
          Assignee: unassigned at sourceware dot org
          Reporter: epasveer at att dot net
  Target Milestone: ---

Hi,

Are there gdb/mi equivalents for the regular checkpoint commands?

* checkpoint
* info checkpoints
* restart <checkpoint-id>
* delete checkpoint <checkpoint-id>

Thanks.

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[Bug mi/30356] gdb/mi equivalent for "checkpoint"

[tromey at sourceware dot org]

https://sourceware.org/bugzilla/show_bug.cgi?id=30356

Tom Tromey <tromey at sourceware dot org> changed:

           What    |Removed                     |Added
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                 CC|                            |tromey at sourceware dot org

--- Comment #1 from Tom Tromey <tromey at sourceware dot org> ---
I don't think there is currently an MI command for this.
You may be able to write one in Python without too
much effort.  (Perhaps hackily though.)

Checkpoints in general seem a bit weird to me.
It's unclear if people use them much; they are
only available for Linux and they don't work with
threaded inferiors.

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[Bug mi/30356] gdb/mi equivalent for "checkpoint"

[epasveer at att dot net]

https://sourceware.org/bugzilla/show_bug.cgi?id=30356

--- Comment #2 from Ernie Pasveer <epasveer at att dot net> ---
Hi Tom,

Can you elaborate more the the "python hack" approach.  I can at least
investigate that. I suspect it would mean the output from the python code would
follow the form of gdb/mi stream channels. ie:

    -checkpoint-create

    -checkpoint-list
    ^done,CheckpointTable={nr_rows="1",nr_cols="4", ...

    -checkpoint-restore N

The python code would accept these "new" commands and somehow morph them into
the native gdb commands.

https://sourceware.org/gdb/current/onlinedocs/gdb.html/Checkpoint_002fRestart.html#Checkpoint_002fRestart


Perhaps you can point me to the resources to make custom commands in python.

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[Bug mi/30356] gdb/mi equivalent for "checkpoint"

[tromey at sourceware dot org]

https://sourceware.org/bugzilla/show_bug.cgi?id=30356

--- Comment #3 from Tom Tromey <tromey at sourceware dot org> ---
Basically you can write new MI commands in Python now:

https://sourceware.org/gdb/current/onlinedocs/gdb.html/GDB_002fMI-Commands-In-Python.html#GDB_002fMI-Commands-In-Python

So you could use this to wrap the CLI commands and generate MI output.
This isn't fantastic but it could be done without patching gdb itself.

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