On Wed, Apr 16, 2014 at 09:12:10PM -0500, Jason Ekstrand wrote:
> We now carry the shell_client around with each shell_surface.  This is much
> more reliable than tacitly assuming that there is only one wl_shell or
> xdg_shell instance bound to a particular wl_client.  In particular, weston
> would crash when a client bound to both wl_shell and xdg_shell even if it
> only ever used one of them.

That makes sense.  Is there a bugzilla bug that this fixes or did you just
hit that crasher locally?  Patch applied.

Kristian

> Signed-off-by: Jason Ekstrand <[email protected]>
> ---
>  desktop-shell/shell.c | 54 
> +++++++++++++++++++++------------------------------
>  1 file changed, 22 insertions(+), 32 deletions(-)
> 
> diff --git a/desktop-shell/shell.c b/desktop-shell/shell.c
> index 59fa99c..0e4329b 100644
> --- a/desktop-shell/shell.c
> +++ b/desktop-shell/shell.c
> @@ -63,6 +63,8 @@ enum shell_surface_type {
>       SHELL_SURFACE_XWAYLAND
>  };
>  
> +struct shell_client;
> +
>  /*
>   * Surface stacking and ordering.
>   *
> @@ -104,6 +106,7 @@ enum shell_surface_type {
>  struct shell_surface {
>       struct wl_resource *resource;
>       struct wl_signal destroy_signal;
> +     struct shell_client *owner;
>  
>       struct weston_surface *surface;
>       struct weston_view *view;
> @@ -233,9 +236,6 @@ set_alpha_if_fullscreen(struct shell_surface *shsurf)
>               shsurf->fullscreen.black_view->alpha = 0.25;
>  }
>  
> -static struct shell_client *
> -get_shell_client(struct wl_client *client);
> -
>  static struct desktop_shell *
>  shell_surface_get_shell(struct shell_surface *shsurf);
>  
> @@ -1859,12 +1859,10 @@ static void
>  handle_xdg_ping(struct shell_surface *shsurf, uint32_t serial)
>  {
>       struct weston_compositor *compositor = shsurf->shell->compositor;
> -     struct wl_client *client = wl_resource_get_client(shsurf->resource);
> -     struct shell_client *sc;
> +     struct shell_client *sc = shsurf->owner;
>       struct wl_event_loop *loop;
>       static const int ping_timeout = 200;
>  
> -     sc = get_shell_client(client);
>       if (sc->unresponsive) {
>               xdg_ping_timeout_handler(sc);
>               return;
> @@ -1982,19 +1980,6 @@ create_keyboard_focus_listener(struct weston_seat 
> *seat)
>       wl_signal_add(&seat->keyboard->focus_signal, listener);
>  }
>  
> -static struct shell_client *
> -get_shell_client(struct wl_client *client)
> -{
> -     struct wl_listener *listener;
> -
> -     listener = wl_client_get_destroy_listener(client,
> -                                               handle_shell_client_destroy);
> -     if (listener == NULL)
> -             return NULL;
> -
> -     return container_of(listener, struct shell_client, destroy_listener);
> -}
> -
>  static void
>  shell_client_pong(struct shell_client *sc, uint32_t serial)
>  {
> @@ -2015,9 +2000,9 @@ static void
>  shell_surface_pong(struct wl_client *client,
>                  struct wl_resource *resource, uint32_t serial)
>  {
> -     struct shell_client *sc;
> +     struct shell_surface *shsurf = wl_resource_get_user_data(resource);
> +     struct shell_client *sc = shsurf->owner;
>  
> -     sc = get_shell_client(client);
>       shell_client_pong(sc, serial);
>  }
>  
> @@ -3105,7 +3090,8 @@ get_shell_surface(struct weston_surface *surface)
>  }
>  
>  static struct shell_surface *
> -create_common_surface(void *shell, struct weston_surface *surface,
> +create_common_surface(struct shell_client *owner, void *shell,
> +                   struct weston_surface *surface,
>                     const struct weston_shell_client *client)
>  {
>       struct shell_surface *shsurf;
> @@ -3134,6 +3120,7 @@ create_common_surface(void *shell, struct 
> weston_surface *surface,
>       shsurf->resource_destroy_listener.notify = handle_resource_destroy;
>       wl_resource_add_destroy_listener(surface->resource,
>                                        &shsurf->resource_destroy_listener);
> +     shsurf->owner = owner;
>  
>       shsurf->shell = (struct desktop_shell *) shell;
>       shsurf->unresponsive = 0;
> @@ -3176,7 +3163,7 @@ static struct shell_surface *
>  create_shell_surface(void *shell, struct weston_surface *surface,
>                    const struct weston_shell_client *client)
>  {
> -     return create_common_surface(shell, surface, client);
> +     return create_common_surface(NULL, shell, surface, client);
>  }
>  
>  static struct weston_view *
> @@ -3193,7 +3180,8 @@ shell_get_shell_surface(struct wl_client *client,
>  {
>       struct weston_surface *surface =
>               wl_resource_get_user_data(surface_resource);
> -     struct desktop_shell *shell = wl_resource_get_user_data(resource);
> +     struct shell_client *sc = wl_resource_get_user_data(resource);
> +     struct desktop_shell *shell = sc->shell;
>       struct shell_surface *shsurf;
>  
>       if (get_shell_surface(surface)) {
> @@ -3203,7 +3191,7 @@ shell_get_shell_surface(struct wl_client *client,
>               return;
>       }
>  
> -     shsurf = create_shell_surface(shell, surface, &shell_client);
> +     shsurf = create_common_surface(sc, shell, surface, &shell_client);
>       if (!shsurf) {
>               wl_resource_post_error(surface_resource,
>                                      WL_DISPLAY_ERROR_INVALID_OBJECT,
> @@ -3447,12 +3435,13 @@ xdg_use_unstable_version(struct wl_client *client,
>  }
>  
>  static struct shell_surface *
> -create_xdg_surface(void *shell, struct weston_surface *surface,
> +create_xdg_surface(struct shell_client *owner, void *shell,
> +                struct weston_surface *surface,
>                  const struct weston_shell_client *client)
>  {
>       struct shell_surface *shsurf;
>  
> -     shsurf = create_common_surface(shell, surface, client);
> +     shsurf = create_common_surface(owner, shell, surface, client);
>       shsurf->type = SHELL_SURFACE_TOPLEVEL;
>  
>       return shsurf;
> @@ -3477,7 +3466,7 @@ xdg_get_xdg_surface(struct wl_client *client,
>               return;
>       }
>  
> -     shsurf = create_xdg_surface(shell, surface, &xdg_client);
> +     shsurf = create_xdg_surface(sc, shell, surface, &xdg_client);
>       if (!shsurf) {
>               wl_resource_post_error(surface_resource,
>                                      WL_DISPLAY_ERROR_INVALID_OBJECT,
> @@ -3526,7 +3515,8 @@ static const struct weston_shell_client 
> xdg_popup_client = {
>  };
>  
>  static struct shell_surface *
> -create_xdg_popup(void *shell, struct weston_surface *surface,
> +create_xdg_popup(struct shell_client *owner, void *shell,
> +              struct weston_surface *surface,
>                const struct weston_shell_client *client,
>                struct weston_surface *parent,
>                struct shell_seat *seat,
> @@ -3535,7 +3525,7 @@ create_xdg_popup(void *shell, struct weston_surface 
> *surface,
>  {
>       struct shell_surface *shsurf;
>  
> -     shsurf = create_common_surface(shell, surface, client);
> +     shsurf = create_common_surface(owner, shell, surface, client);
>       shsurf->type = SHELL_SURFACE_POPUP;
>       shsurf->popup.shseat = seat;
>       shsurf->popup.serial = serial;
> @@ -3580,7 +3570,7 @@ xdg_get_xdg_popup(struct wl_client *client,
>       parent = wl_resource_get_user_data(parent_resource);
>       seat = get_shell_seat(wl_resource_get_user_data(seat_resource));;
>  
> -     shsurf = create_xdg_popup(shell, surface, &xdg_popup_client,
> +     shsurf = create_xdg_popup(sc, shell, surface, &xdg_popup_client,
>                                 parent, seat, serial, x, y);
>       if (!shsurf) {
>               wl_resource_post_error(surface_resource,
> @@ -5070,7 +5060,7 @@ bind_shell(struct wl_client *client, void *data, 
> uint32_t version, uint32_t id)
>       if (sc)
>               wl_resource_set_implementation(sc->resource,
>                                              &shell_implementation,
> -                                            shell, NULL);
> +                                            sc, NULL);
>  }
>  
>  static void
> -- 
> 1.9.0
> 
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