On Thu, Jul 20, 2017 at 10:45:38AM +0200, Quentin Glidic wrote:
> From: Quentin Glidic <[email protected]>
> 
> Now we keep track of serial->state association and we discard the states
> that the client ignored.
> 
> Signed-off-by: Quentin Glidic <[email protected]>

Reviewed-by: Jonas Ådahl <[email protected]>

> ---
> 
> On 7/20/17 10:24 AM, Jonas Ådahl wrote:
> > Noticed one more thing I missed in the previous review: cleanup of the
> > pending configure allocations on surface destruction.
> 
> Oh, good catch, thanks.
> 
> v3:
>  Fixed a tiny style issue
>  Now send an error on wrong serial
> v4:
>  Free configure_list on destroy
> 
>  libweston-desktop/xdg-shell-v5.c | 60 ++++++++++++++++++++++++++----
>  libweston-desktop/xdg-shell-v6.c | 79 
> +++++++++++++++++++++++++++++++++++-----
>  2 files changed, 122 insertions(+), 17 deletions(-)
> 
> diff --git a/libweston-desktop/xdg-shell-v5.c 
> b/libweston-desktop/xdg-shell-v5.c
> index b32b7812..c91c2590 100644
> --- a/libweston-desktop/xdg-shell-v5.c
> +++ b/libweston-desktop/xdg-shell-v5.c
> @@ -46,6 +46,13 @@ struct weston_desktop_xdg_surface_state {
>       bool activated;
>  };
>  
> +struct weston_desktop_xdg_surface_configure {
> +     struct wl_list link; /* weston_desktop_xdg_surface::configure_list */
> +     uint32_t serial;
> +     struct weston_desktop_xdg_surface_state state;
> +     struct weston_size size;
> +};
> +
>  struct weston_desktop_xdg_surface {
>       struct wl_resource *resource;
>       struct weston_desktop_surface *surface;
> @@ -53,7 +60,7 @@ struct weston_desktop_xdg_surface {
>       bool added;
>       struct wl_event_source *add_idle;
>       struct wl_event_source *configure_idle;
> -     uint32_t configure_serial;
> +     struct wl_list configure_list; /* 
> weston_desktop_xdg_surface_configure::link */
>       struct {
>               struct weston_desktop_xdg_surface_state state;
>               struct weston_size size;
> @@ -94,13 +101,26 @@ static void
>  weston_desktop_xdg_surface_send_configure(void *data)
>  {
>       struct weston_desktop_xdg_surface *surface = data;
> +     struct weston_desktop_xdg_surface_configure *configure;
>       uint32_t *s;
>       struct wl_array states;
>  
>       surface->configure_idle = NULL;
>  
> -     surface->configure_serial =
> +     configure = zalloc(sizeof(struct weston_desktop_xdg_surface_configure));
> +     if (configure == NULL) {
> +             struct weston_desktop_client *client =
> +                     weston_desktop_surface_get_client(surface->surface);
> +             struct wl_client *wl_client =
> +                     weston_desktop_client_get_client(client);
> +             wl_client_post_no_memory(wl_client);
> +             return;
> +     }
> +     wl_list_insert(surface->configure_list.prev, &configure->link);
> +     configure->serial =
>               
> wl_display_next_serial(weston_desktop_get_display(surface->desktop));
> +     configure->state = surface->pending.state;
> +     configure->size = surface->pending.size;
>  
>       wl_array_init(&states);
>       if (surface->pending.state.maximized) {
> @@ -124,7 +144,7 @@ weston_desktop_xdg_surface_send_configure(void *data)
>                                  surface->pending.size.width,
>                                  surface->pending.size.height,
>                                  &states,
> -                                surface->configure_serial);
> +                                configure->serial);
>  
>       wl_array_release(&states);
>  };
> @@ -325,6 +345,7 @@ weston_desktop_xdg_surface_destroy(struct 
> weston_desktop_surface *dsurface,
>                                  void *user_data)
>  {
>       struct weston_desktop_xdg_surface *surface = user_data;
> +     struct weston_desktop_xdg_surface_configure *configure, *temp;
>  
>       if (surface->added)
>               weston_desktop_api_surface_removed(surface->desktop,
> @@ -336,6 +357,9 @@ weston_desktop_xdg_surface_destroy(struct 
> weston_desktop_surface *dsurface,
>       if (surface->configure_idle != NULL)
>               wl_event_source_remove(surface->configure_idle);
>  
> +     wl_list_for_each_safe(configure, temp, &surface->configure_list, link)
> +             free(configure);
> +
>       free(surface);
>  }
>  
> @@ -443,12 +467,34 @@ 
> weston_desktop_xdg_surface_protocol_ack_configure(struct wl_client *wl_client,
>               wl_resource_get_user_data(resource);
>       struct weston_desktop_xdg_surface *surface =
>               weston_desktop_surface_get_implementation_data(dsurface);
> -
> -     if (surface->configure_serial != serial)
> +     struct weston_desktop_xdg_surface_configure *configure, *temp;
> +     bool found = false;
> +
> +     wl_list_for_each_safe(configure, temp, &surface->configure_list, link) {
> +             if (configure->serial < serial) {
> +                     wl_list_remove(&configure->link);
> +                     free(configure);
> +             } else if (configure->serial == serial) {
> +                     wl_list_remove(&configure->link);
> +                     found = true;
> +             }
> +             break;
> +     }
> +     if (!found) {
> +             struct weston_desktop_client *client =
> +                     weston_desktop_surface_get_client(dsurface);
> +             struct wl_resource *client_resource =
> +                     weston_desktop_client_get_resource(client);
> +             wl_resource_post_error(client_resource,
> +                                    XDG_SHELL_ERROR_DEFUNCT_SURFACES,
> +                                    "Wrong configure serial: %u", serial);
>               return;
> +     }
> +
> +     surface->next.state = configure->state;
> +     surface->next.size = configure->size;
>  
> -     surface->next.state = surface->pending.state;
> -     surface->next.size = surface->pending.size;
> +     free(configure);
>  }
>  
>  static void
> diff --git a/libweston-desktop/xdg-shell-v6.c 
> b/libweston-desktop/xdg-shell-v6.c
> index f5e46daa..de5d3e05 100644
> --- a/libweston-desktop/xdg-shell-v6.c
> +++ b/libweston-desktop/xdg-shell-v6.c
> @@ -69,7 +69,7 @@ struct weston_desktop_xdg_surface {
>       struct weston_desktop_surface *desktop_surface;
>       bool configured;
>       struct wl_event_source *configure_idle;
> -     uint32_t configure_serial;
> +     struct wl_list configure_list; /* 
> weston_desktop_xdg_surface_configure::link */
>  
>       bool has_next_geometry;
>       struct weston_geometry next_geometry;
> @@ -77,6 +77,11 @@ struct weston_desktop_xdg_surface {
>       enum weston_desktop_xdg_surface_role role;
>  };
>  
> +struct weston_desktop_xdg_surface_configure {
> +     struct wl_list link; /* weston_desktop_xdg_surface::configure_list */
> +     uint32_t serial;
> +};
> +
>  struct weston_desktop_xdg_toplevel_state {
>       bool maximized;
>       bool fullscreen;
> @@ -84,6 +89,12 @@ struct weston_desktop_xdg_toplevel_state {
>       bool activated;
>  };
>  
> +struct weston_desktop_xdg_toplevel_configure {
> +     struct weston_desktop_xdg_surface_configure base;
> +     struct weston_desktop_xdg_toplevel_state state;
> +     struct weston_size size;
> +};
> +
>  struct weston_desktop_xdg_toplevel {
>       struct weston_desktop_xdg_surface base;
>  
> @@ -115,6 +126,7 @@ struct weston_desktop_xdg_popup {
>  };
>  
>  #define weston_desktop_surface_role_biggest_size (sizeof(struct 
> weston_desktop_xdg_toplevel))
> +#define weston_desktop_surface_configure_biggest_size (sizeof(struct 
> weston_desktop_xdg_toplevel))
>  
>  
>  static struct weston_geometry
> @@ -422,10 +434,11 @@ weston_desktop_xdg_toplevel_protocol_resize(struct 
> wl_client *wl_client,
>  }
>  
>  static void
> -weston_desktop_xdg_toplevel_ack_configure(struct weston_desktop_xdg_toplevel 
> *toplevel)
> +weston_desktop_xdg_toplevel_ack_configure(struct weston_desktop_xdg_toplevel 
> *toplevel,
> +                                       struct 
> weston_desktop_xdg_toplevel_configure *configure)
>  {
> -     toplevel->next.state = toplevel->pending.state;
> -     toplevel->next.size = toplevel->pending.size;
> +     toplevel->next.state = configure->state;
> +     toplevel->next.size = configure->size;
>  }
>  
>  static void
> @@ -529,11 +542,15 @@ 
> weston_desktop_xdg_toplevel_protocol_set_minimized(struct wl_client 
> *wl_client,
>  }
>  
>  static void
> -weston_desktop_xdg_toplevel_send_configure(struct 
> weston_desktop_xdg_toplevel *toplevel)
> +weston_desktop_xdg_toplevel_send_configure(struct 
> weston_desktop_xdg_toplevel *toplevel,
> +                                        struct 
> weston_desktop_xdg_toplevel_configure *configure)
>  {
>       uint32_t *s;
>       struct wl_array states;
>  
> +     configure->state = toplevel->pending.state;
> +     configure->size = toplevel->pending.size;
> +
>       wl_array_init(&states);
>       if (toplevel->pending.state.maximized) {
>               s = wl_array_add(&states, sizeof(uint32_t));
> @@ -848,9 +865,21 @@ static void
>  weston_desktop_xdg_surface_send_configure(void *user_data)
>  {
>       struct weston_desktop_xdg_surface *surface = user_data;
> +     struct weston_desktop_xdg_surface_configure *configure;
>  
>       surface->configure_idle = NULL;
> -     surface->configure_serial =
> +
> +     configure = zalloc(weston_desktop_surface_configure_biggest_size);
> +     if (configure == NULL) {
> +             struct weston_desktop_client *client =
> +                     
> weston_desktop_surface_get_client(surface->desktop_surface);
> +             struct wl_client *wl_client =
> +                     weston_desktop_client_get_client(client);
> +             wl_client_post_no_memory(wl_client);
> +             return;
> +     }
> +     wl_list_insert(surface->configure_list.prev, &configure->link);
> +     configure->serial =
>               
> wl_display_next_serial(weston_desktop_get_display(surface->desktop));
>  
>       switch (surface->role) {
> @@ -858,14 +887,15 @@ weston_desktop_xdg_surface_send_configure(void 
> *user_data)
>               assert(0 && "not reached");
>               break;
>       case WESTON_DESKTOP_XDG_SURFACE_ROLE_TOPLEVEL:
> -             weston_desktop_xdg_toplevel_send_configure((struct 
> weston_desktop_xdg_toplevel *) surface);
> +             weston_desktop_xdg_toplevel_send_configure((struct 
> weston_desktop_xdg_toplevel *) surface,
> +                                                        (struct 
> weston_desktop_xdg_toplevel_configure *) configure);
>               break;
>       case WESTON_DESKTOP_XDG_SURFACE_ROLE_POPUP:
>               weston_desktop_xdg_popup_send_configure((struct 
> weston_desktop_xdg_popup *) surface);
>               break;
>       }
>  
> -     zxdg_surface_v6_send_configure(surface->resource, 
> surface->configure_serial);
> +     zxdg_surface_v6_send_configure(surface->resource, configure->serial);
>  }
>  
>  static bool
> @@ -1060,12 +1090,32 @@ 
> weston_desktop_xdg_surface_protocol_ack_configure(struct wl_client *wl_client,
>               wl_resource_get_user_data(resource);
>       struct weston_desktop_xdg_surface *surface =
>               weston_desktop_surface_get_implementation_data(dsurface);
> +     struct weston_desktop_xdg_surface_configure *configure, *temp;
> +     bool found = false;
>  
>       if (!weston_desktop_xdg_surface_check_role(surface))
>               return;
>  
> -     if (surface->configure_serial != serial)
> +     wl_list_for_each_safe(configure, temp, &surface->configure_list, link) {
> +             if (configure->serial < serial) {
> +                     wl_list_remove(&configure->link);
> +                     free(configure);
> +             } else if (configure->serial == serial) {
> +                     wl_list_remove(&configure->link);
> +                     found = true;
> +             }
> +             break;
> +     }
> +     if (!found) {
> +             struct weston_desktop_client *client =
> +                     weston_desktop_surface_get_client(dsurface);
> +             struct wl_resource *client_resource =
> +                     weston_desktop_client_get_resource(client);
> +             wl_resource_post_error(client_resource,
> +                                    
> ZXDG_SHELL_V6_ERROR_INVALID_SURFACE_STATE,
> +                                    "Wrong configure serial: %u", serial);
>               return;
> +     }
>  
>       surface->configured = true;
>  
> @@ -1074,11 +1124,14 @@ 
> weston_desktop_xdg_surface_protocol_ack_configure(struct wl_client *wl_client,
>               assert(0 && "not reached");
>               break;
>       case WESTON_DESKTOP_XDG_SURFACE_ROLE_TOPLEVEL:
> -             weston_desktop_xdg_toplevel_ack_configure((struct 
> weston_desktop_xdg_toplevel *) surface);
> +             weston_desktop_xdg_toplevel_ack_configure((struct 
> weston_desktop_xdg_toplevel *) surface,
> +                                                       (struct 
> weston_desktop_xdg_toplevel_configure *) configure);
>               break;
>       case WESTON_DESKTOP_XDG_SURFACE_ROLE_POPUP:
>               break;
>       }
> +
> +     free(configure);
>  }
>  
>  static void
> @@ -1153,6 +1206,7 @@ weston_desktop_xdg_surface_destroy(struct 
> weston_desktop_surface *dsurface,
>                                  void *user_data)
>  {
>       struct weston_desktop_xdg_surface *surface = user_data;
> +     struct weston_desktop_xdg_surface_configure *configure, *temp;
>  
>       switch (surface->role) {
>       case WESTON_DESKTOP_XDG_SURFACE_ROLE_NONE:
> @@ -1168,6 +1222,9 @@ weston_desktop_xdg_surface_destroy(struct 
> weston_desktop_surface *dsurface,
>       if (surface->configure_idle != NULL)
>               wl_event_source_remove(surface->configure_idle);
>  
> +     wl_list_for_each_safe(configure, temp, &surface->configure_list, link)
> +             free(configure);
> +
>       free(surface);
>  }
>  
> @@ -1290,6 +1347,8 @@ 
> weston_desktop_xdg_shell_protocol_get_xdg_surface(struct wl_client *wl_client,
>                                      "xdg_surface must not have a buffer at 
> creation");
>               return;
>       }
> +
> +     wl_list_init(&surface->configure_list);
>  }
>  
>  static void
> -- 
> 2.13.3
> 
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