Re: [Qemu-devel] [RFC PATCH 08/17] replay: introduce info hmp/qmp command

[Eric Blake]

On 04/25/2018 07:46 AM, Pavel Dovgalyuk wrote:
> This patch introduces 'info replay' monitor command and
> corresponding qmp request.
> These commands request the current record/replay mode, replay log file name,
> and the execution step (number or recorded/replayed instructions).
> 
> Signed-off-by: Pavel Dovgalyuk <address@hidden>
> ---

Focusing on the QMP portion:


> +++ b/qapi/misc.json
> @@ -3449,3 +3449,39 @@
>  ##
>  { 'command': 'x-oob-test', 'data' : { 'lock': 'bool' },
>    'allow-oob': true }
> +
> +##
> +# @ReplayInfo:
> +#
> +# Status of the record/replay mode.
> +#
> +# @mode: current mode.
> +#
> +# @filename: name of the record/replay log file.
> +#
> +# @step: current step number.
> +#
> +# Since: 2.13
> +#
> +##
> +{ 'struct': 'ReplayInfo',
> +  'data': { 'mode': 'ReplayMode', '*filename': 'str', 'step': 'int' } }
> +
> +
> +##
> +# @info_replay:

Please call this 'query-replay', for consistency with other QMP commands
(your version looks too much like an HMP command).

> +#
> +# Retrieves the status of the execution record/replay.
> +#
> +# Returns: structure with the properties of the record/replay.
> +#
> +# Since: 2.13
> +#
> +# Example:
> +#
> +# -> { "execute": "info_replay" }
> +# <- { "return": { "mode": "play", "filename": "log.rr", "step": 220414 } }
> +#
> +##
> +{ 'command': 'info_replay',
> +  'returns': 'ReplayInfo' }

Please put these additions to misc.json be grouped closer to the
existing ReplayMode definition

> diff --git a/replay/Makefile.objs b/replay/Makefile.objs
> index cee6539..6694e3e 100644
> --- a/replay/Makefile.objs
> +++ b/replay/Makefile.objs
> @@ -6,4 +6,5 @@ common-obj-y += replay-input.o
>  common-obj-y += replay-char.o
>  common-obj-y += replay-snapshot.o
>  common-obj-y += replay-net.o
> -common-obj-y += replay-audio.o
> \ No newline at end of file

Eww, that's an existing trivial bug that we should fix (POSIX says that
Makefiles should be text files, and that text files should end in a
newline).  Just because GNU make handles a missing trailing newline on
makefile include fragments doesn't mean we should rely on it.

-- 
Eric Blake, Principal Software Engineer
Red Hat, Inc.           +1-919-301-3266
Virtualization:  qemu.org | libvirt.org

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