Re: [spice-server PATCH 2/2] display seamless migration: no need to trace the generation of the primary surface

[Uri Lublin <uril@xxxxxxxxxx>]

On 11/05/2012 11:33 PM, Yonit Halperin wrote:
> We no longer process destroy_primary or destroy_surfaces while waiting
> for migration data.

Ack.

> ---
>   server/red_worker.c |   51 ++++++++++++++++-----------------------------------
>   1 files changed, 16 insertions(+), 35 deletions(-)
>
> diff --git a/server/red_worker.c b/server/red_worker.c
> index dd27872..4381e22 100644
> --- a/server/red_worker.c
> +++ b/server/red_worker.c
> @@ -921,7 +921,6 @@ typedef struct RedWorker {
>       RedSurface surfaces[NUM_SURFACES];
>       uint32_t n_surfaces;
>       SpiceImageSurfaces image_surfaces;
> -    uint32_t primary_surface_generation;
>
>       MonitorsConfig *monitors_config;
>
> @@ -9766,23 +9765,12 @@ static uint64_t display_channel_handle_migrate_data_get_serial(
>       return migrate_data->message_serial;
>   }
>
> -static int display_channel_client_restore_surface(DisplayChannelClient *dcc, uint32_t surface_id)
> +static void display_channel_client_restore_surface(DisplayChannelClient *dcc, uint32_t surface_id)
>   {
> -    if (surface_id == 0) {
> -        if (dcc->common.worker->primary_surface_generation<= 1) {
> -            dcc->surface_client_created[surface_id] = TRUE;
> -            return TRUE;
> -        } else {
> -            /* red_create_surface_item already updated the client */
> -            return FALSE;
> -        }
> -    } else {
> -        /* we don't process commands till we receive the migration data, thus,
> -         * we should have not created any off-screen surface */
> -        spice_assert(!dcc->surface_client_created[surface_id]);
> -        dcc->surface_client_created[surface_id] = TRUE;
> -        return TRUE;
> -    }
> +    /* we don't process commands till we receive the migration data, thus,
> +     * we should have not sent any surface to the client. */
> +    spice_assert(!dcc->surface_client_created[surface_id]);
> +    dcc->surface_client_created[surface_id] = TRUE;
>   }
>
>   static void display_channel_client_restore_surfaces_lossless(DisplayChannelClient *dcc,
> @@ -9806,21 +9794,19 @@ static void display_channel_client_restore_surfaces_lossy(DisplayChannelClient *
>       spice_debug(NULL);
>       for (i = 0; i<  mig_surfaces->num_surfaces; i++) {
>           uint32_t surface_id = mig_surfaces->surfaces[i].id;
> +        SpiceMigrateDataRect *mig_lossy_rect;
> +        SpiceRect lossy_rect;
>
> -        if (display_channel_client_restore_surface(dcc, surface_id)) {
> -            SpiceMigrateDataRect *mig_lossy_rect;
> -            SpiceRect lossy_rect;
> -
> -            spice_assert(dcc->surface_client_created[surface_id]);
> +        display_channel_client_restore_surface(dcc, surface_id);
> +        spice_assert(dcc->surface_client_created[surface_id]);
>
> -            mig_lossy_rect =&mig_surfaces->surfaces[i].lossy_rect;
> -            lossy_rect.left = mig_lossy_rect->left;
> -            lossy_rect.top = mig_lossy_rect->top;
> -            lossy_rect.right = mig_lossy_rect->right;
> -            lossy_rect.bottom = mig_lossy_rect->bottom;
> -            region_init(&dcc->surface_client_lossy_region[surface_id]);
> -            region_add(&dcc->surface_client_lossy_region[surface_id],&lossy_rect);
> -        }
> +        mig_lossy_rect =&mig_surfaces->surfaces[i].lossy_rect;
> +        lossy_rect.left = mig_lossy_rect->left;
> +        lossy_rect.top = mig_lossy_rect->top;
> +        lossy_rect.right = mig_lossy_rect->right;
> +        lossy_rect.bottom = mig_lossy_rect->bottom;
> +        region_init(&dcc->surface_client_lossy_region[surface_id]);
> +        region_add(&dcc->surface_client_lossy_region[surface_id],&lossy_rect);
>       }
>   }
>   static int display_channel_handle_migrate_data(RedChannelClient *rcc, uint32_t size,
> @@ -11041,11 +11027,6 @@ static void dev_create_primary_surface(RedWorker *worker, uint32_t surface_id,
>           line_0 -= (int32_t)(surface.stride * (surface.height -1));
>       }
>
> -    if (!worker->display_channel->common.during_target_migrate) {
> -        worker->primary_surface_generation++;
> -    } else {
> -         worker->primary_surface_generation = 1;
> -    }
>       red_create_surface(worker, 0, surface.width, surface.height, surface.stride, surface.format,
>                          line_0, surface.flags&  QXL_SURF_FLAG_KEEP_DATA, TRUE);
>       set_monitors_config_to_primary(worker);

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