Re: [Qemu-devel] [PATCH 3/4] monitor, console: add QEVENT_SCREEN_DUMP_COMPLETE

[Luiz Capitulino <lcapitulino@redhat.com>]

On Fri, 24 Feb 2012 23:22:04 +0200
Alon Levy <alevy@redhat.com> wrote:

> Signed-off-by: Alon Levy <alevy@redhat.com>
> ---
>  QMP/qmp-events.txt |   14 ++++++++++++++
>  console.c          |   18 ++++++++++++++++++
>  console.h          |    1 +
>  monitor.c          |    2 ++
>  monitor.h          |    1 +
>  5 files changed, 36 insertions(+), 0 deletions(-)
> 
> diff --git a/QMP/qmp-events.txt b/QMP/qmp-events.txt
> index 9286af5..0d1c9f4 100644
> --- a/QMP/qmp-events.txt
> +++ b/QMP/qmp-events.txt
> @@ -335,3 +335,17 @@ Example:
>                 "len": 10737418240, "offset": 134217728,
>                 "speed": 0 },
>       "timestamp": { "seconds": 1267061043, "microseconds": 959568 } }
> +
> +SCREEN_DUMP_COMPLETE
> +--------------------
> +
> +Emitted when screen-dump-async completes.
> +
> +Data:
> +
> +- "filename": Name of file containing screen dump (json-string)
> +
> +Example:
> +
> +{ "event": "SCREEN_DUMP_COMPLETE",
> +     "data": { "filename": "/tmp/a.ppm" } }

This example is incomplete, a QMP event contains more fields.

> diff --git a/console.c b/console.c
> index 6a463f5..6750538 100644
> --- a/console.c
> +++ b/console.c
> @@ -24,6 +24,8 @@
>  #include "qemu-common.h"
>  #include "console.h"
>  #include "qemu-timer.h"
> +#include "qjson.h"
> +#include "monitor.h"
>  
>  //#define DEBUG_CONSOLE
>  #define DEFAULT_BACKSCROLL 512
> @@ -1707,3 +1709,19 @@ PixelFormat qemu_default_pixelformat(int bpp)
>      }
>      return pf;
>  }
> +
> +void monitor_protocol_screen_dump_complete_event(const char *filename)
> +{
> +    QObject *event_data;
> +    /*
> +     * TODO: Only good for a single user, or a very aware user
> +     * that changes the filename to distinguish between different
> +     * screendumps.

This comment pertains to the event documentation.

> +     * Should include support for different monitors on the same device,
> +     * and for different devices. Got stuck trying to figure a canonical string
> +     * represnetation of a device.
> +     */

I think the above comment is not worth it.

> +    event_data = qobject_from_jsonf("{ 'filename': %s }", filename);
> +    monitor_protocol_event(QEVENT_SCREEN_DUMP_COMPLETE, event_data);
> +    qobject_decref(event_data);
> +}
> diff --git a/console.h b/console.h
> index a95b581..c22803c 100644
> --- a/console.h
> +++ b/console.h
> @@ -353,6 +353,7 @@ void vga_hw_update(void);
>  void vga_hw_invalidate(void);
>  void vga_hw_screen_dump(const char *filename);
>  void vga_hw_text_update(console_ch_t *chardata);
> +void monitor_protocol_screen_dump_complete_event(const char *filename);
>  
>  int is_graphic_console(void);
>  int is_fixedsize_console(void);
> diff --git a/monitor.c b/monitor.c
> index 953e748..1a65c41 100644
> --- a/monitor.c
> +++ b/monitor.c
> @@ -493,6 +493,8 @@ void monitor_protocol_event(MonitorEvent event, QObject *data)
>              break;
>          case QEVENT_WAKEUP:
>              event_name = "WAKEUP";
> +        case QEVENT_SCREEN_DUMP_COMPLETE:
> +            event_name = "SCREEN_DUMP_COMPLETE";
>              break;
>          default:
>              abort();
> diff --git a/monitor.h b/monitor.h
> index 0d49800..227ebf2 100644
> --- a/monitor.h
> +++ b/monitor.h
> @@ -41,6 +41,7 @@ typedef enum MonitorEvent {
>      QEVENT_DEVICE_TRAY_MOVED,
>      QEVENT_SUSPEND,
>      QEVENT_WAKEUP,
> +    QEVENT_SCREEN_DUMP_COMPLETE,
>      QEVENT_MAX,
>  } MonitorEvent;
>