On Thu, Jun 06, 2013 at 10:34:41PM -0500, Jason Ekstrand wrote:
> This is the first in what will be a series of weston patches to convert
> instances of wl_resource to pointers so we can make wl_resource opaque.
> This patch handles weston_surface and should be the most invasive of the
> entire series. I am sending this one out ahead of the rest for review.
>
> Specifically, my machine is not set up to build XWayland so I have no
> ability to test it fully. Could someone please test with XWayland and let
> me know if this causes problems?
>
> Because a surface may be created from XWayland, the resource may not always
> exist. Therefore, a destroy signal was added to weston_surface and
> everything used to listen to surface->resource.destroy_signal now listens
> to surface->destroy_signal.
Very nice, I like how the weston_surface->resource pointer now becomes
an indicator of whether or not there's a protocol object for the
surface, and life-cycle management for non-protocol surface is clearer.
I think we should introduce ref-counts for weston_surface at this
point. The idea is that the wl_resource (if it exists) has a
ref-count to weston_surface. For most protocol surfaces, that's the
only ref-count there'll be and the resource destructor unrefs the
weston_surface, which then triggers the destroy as it does now. But I
want to be able to add a resource destroy listener, that takes a ref
on the weston_surface and this delays destruction. The surface goes
away as a protocol object (and from the clients point of view) but we
can still run a destroy animation, which then drops the last ref when
it's done.
I compiled and tested it and the xwayland part works fine, but I had
to add wl_resource_get_id() (which I committed and pushed) and I fixed
these compile errors:
diff --git a/src/tablet-shell.c b/src/tablet-shell.c
index d42ff16..3ef756c 100644
--- a/src/tablet-shell.c
+++ b/src/tablet-shell.c
@@ -186,7 +186,7 @@ tablet_shell_set_lockscreen(struct wl_client *client,
shell->lockscreen_surface = es;
shell->lockscreen_surface->configure = tablet_shell_surface_configure;
shell->lockscreen_listener.notify = handle_lockscreen_surface_destroy;
- wl_signal_add(es->destroy_signal, &shell->lockscreen_listener);
+ wl_signal_add(&es->destroy_signal, &shell->lockscreen_listener);
}
static void
@@ -217,7 +217,7 @@ tablet_shell_set_switcher(struct wl_client *client,
weston_surface_set_position(shell->switcher_surface, 0, 0);
shell->switcher_listener.notify = handle_switcher_surface_destroy;
- wl_signal_add(es->destroy_signal, &shell->switcher_listener);
+ wl_signal_add(&es->destroy_signal, &shell->switcher_listener);
}
static void
diff --git a/src/text-backend.c b/src/text-backend.c
index 3d36527..da0d275 100644
--- a/src/text-backend.c
+++ b/src/text-backend.c
@@ -197,7 +197,7 @@ text_input_activate(struct wl_client *client,
wl_signal_emit(&ec->update_input_panel_signal,
&text_input->cursor_rectangle);
}
- wl_text_input_send_enter(&text_input->resource,
&text_input->surface->resource);
+ wl_text_input_send_enter(&text_input->resource,
text_input->surface->resource);
}
static void
but other than those and with the ref-count and a real commit message,
I think this is ready to go.
Kristian
> ---
> src/animation.c | 2 +-
> src/compositor.c | 65
> ++++++++++++++++++++++---------------------
> src/compositor.h | 3 +-
> src/data-device.c | 9 +++---
> src/input.c | 24 ++++++++--------
> src/shell.c | 13 ++++-----
> src/tablet-shell.c | 7 ++---
> src/xwayland/window-manager.c | 12 ++++----
> src/zoom.c | 5 +++-
> 9 files changed, 72 insertions(+), 68 deletions(-)
>
> diff --git a/src/animation.c b/src/animation.c
> index b9d0f8a..10ab583 100644
> --- a/src/animation.c
> +++ b/src/animation.c
> @@ -188,7 +188,7 @@ weston_surface_animation_run(struct weston_surface
> *surface,
> weston_surface_animation_frame(&animation->animation, NULL, 0);
>
> animation->listener.notify = handle_animation_surface_destroy;
> - wl_signal_add(&surface->resource.destroy_signal, &animation->listener);
> + wl_signal_add(&surface->destroy_signal, &animation->listener);
>
> wl_list_insert(&surface->output->animation_list,
> &animation->animation.link);
> diff --git a/src/compositor.c b/src/compositor.c
> index 099600d..42011f5 100644
> --- a/src/compositor.c
> +++ b/src/compositor.c
> @@ -276,13 +276,13 @@ weston_surface_create(struct weston_compositor
> *compositor)
> if (surface == NULL)
> return NULL;
>
> - wl_signal_init(&surface->resource.destroy_signal);
> + wl_signal_init(&surface->destroy_signal);
> +
> + surface->resource = NULL;
>
> wl_list_init(&surface->link);
> wl_list_init(&surface->layer_link);
>
> - surface->resource.client = NULL;
> -
> surface->compositor = compositor;
> surface->alpha = 1.0;
>
> @@ -523,14 +523,16 @@ weston_surface_update_output_mask(struct weston_surface
> *es, uint32_t mask)
> uint32_t left = es->output_mask & different;
> struct weston_output *output;
> struct wl_resource *resource = NULL;
> - struct wl_client *client = es->resource.client;
> + struct wl_client *client;
>
> es->output_mask = mask;
> - if (es->resource.client == NULL)
> + if (es->resource == NULL)
> return;
> if (different == 0)
> return;
>
> + client = wl_resource_get_client(es->resource);
> +
> wl_list_for_each(output, &es->compositor->output_list, link) {
> if (1 << output->id & different)
> resource =
> @@ -539,9 +541,9 @@ weston_surface_update_output_mask(struct weston_surface
> *es, uint32_t mask)
> if (resource == NULL)
> continue;
> if (1 << output->id & entered)
> - wl_surface_send_enter(&es->resource, resource);
> + wl_surface_send_enter(es->resource, resource);
> if (1 << output->id & left)
> - wl_surface_send_leave(&es->resource, resource);
> + wl_surface_send_leave(es->resource, resource);
> }
> }
>
> @@ -882,7 +884,7 @@ weston_surface_set_transform_parent(struct weston_surface
> *surface,
> surface->geometry.parent_destroy_listener.notify =
> transform_parent_handle_parent_destroy;
> if (parent) {
> - wl_signal_add(&parent->resource.destroy_signal,
> + wl_signal_add(&parent->destroy_signal,
> &surface->geometry.parent_destroy_listener);
> wl_list_insert(&parent->geometry.child_list,
> &surface->geometry.parent_link);
> @@ -1004,11 +1006,15 @@ struct weston_frame_callback {
> struct wl_list link;
> };
>
> -static void
> -destroy_surface(struct wl_resource *resource)
> +
> +WL_EXPORT void
> +weston_surface_destroy(struct weston_surface *surface)
> {
> - struct weston_surface *surface =
> - container_of(resource, struct weston_surface, resource);
> + /* Not a valid way to destroy a client surface */
> + assert(surface->resource == NULL);
> +
> + wl_signal_emit(&surface->destroy_signal, &surface->resource);
> +
> struct weston_compositor *compositor = surface->compositor;
> struct weston_frame_callback *cb, *next;
>
> @@ -1048,14 +1054,13 @@ destroy_surface(struct wl_resource *resource)
> free(surface);
> }
>
> -WL_EXPORT void
> -weston_surface_destroy(struct weston_surface *surface)
> +static void
> +destroy_surface(struct wl_resource *resource)
> {
> - /* Not a valid way to destroy a client surface */
> - assert(surface->resource.client == NULL);
> + struct weston_surface *surface = wl_resource_get_user_data(resource);
>
> - wl_signal_emit(&surface->resource.destroy_signal, &surface->resource);
> - destroy_surface(&surface->resource);
> + surface->resource = NULL;
> + weston_surface_destroy(surface);
> }
>
> static void
> @@ -1660,15 +1665,10 @@ compositor_create_surface(struct wl_client *client,
> return;
> }
>
> - surface->resource.destroy = destroy_surface;
> -
> - surface->resource.object.id = id;
> - surface->resource.object.interface = &wl_surface_interface;
> - surface->resource.object.implementation =
> - (void (**)(void)) &surface_interface;
> - surface->resource.data = surface;
> -
> - wl_client_add_resource(client, &surface->resource);
> + surface->resource = wl_client_add_object(client, &wl_surface_interface,
> + &surface_interface,
> + id, surface);
> + wl_resource_set_destructor(surface->resource, destroy_surface);
> }
>
> static void
> @@ -2035,7 +2035,7 @@ subsurface_sibling_check(struct weston_subsurface *sub,
> wl_resource_post_error(sub->resource,
> WL_SUBSURFACE_ERROR_BAD_SURFACE,
> "%s: wl_surface@%d is not a parent or sibling",
> - request, surface->resource.object.id);
> + request, wl_resource_get_id(surface->resource));
> return NULL;
> }
>
> @@ -2043,7 +2043,7 @@ subsurface_sibling_check(struct weston_subsurface *sub,
> wl_resource_post_error(sub->resource,
> WL_SUBSURFACE_ERROR_BAD_SURFACE,
> "%s: wl_surface@%d has a different parent",
> - request, surface->resource.object.id);
> + request, wl_resource_get_id(surface->resource));
> return NULL;
> }
>
> @@ -2204,7 +2204,7 @@ weston_subsurface_link_parent(struct weston_subsurface
> *sub,
> {
> sub->parent = parent;
> sub->parent_destroy_listener.notify = subsurface_handle_parent_destroy;
> - wl_signal_add(&parent->resource.destroy_signal,
> + wl_signal_add(&parent->destroy_signal,
> &sub->parent_destroy_listener);
>
> wl_list_insert(&parent->subsurface_list, &sub->parent_link);
> @@ -2219,7 +2219,7 @@ weston_subsurface_link_surface(struct weston_subsurface
> *sub,
> sub->surface = surface;
> sub->surface_destroy_listener.notify =
> subsurface_handle_surface_destroy;
> - wl_signal_add(&surface->resource.destroy_signal,
> + wl_signal_add(&surface->destroy_signal,
> &sub->surface_destroy_listener);
> }
>
> @@ -2266,12 +2266,13 @@ weston_subsurface_create(uint32_t id, struct
> weston_surface *surface,
> struct weston_surface *parent)
> {
> struct weston_subsurface *sub;
> + struct wl_client *client = wl_resource_get_client(surface->resource);
>
> sub = calloc(1, sizeof *sub);
> if (!sub)
> return NULL;
>
> - sub->resource = wl_client_add_object(surface->resource.client,
> + sub->resource = wl_client_add_object(client,
> &wl_subsurface_interface,
> &subsurface_implementation,
> id, sub);
> diff --git a/src/compositor.h b/src/compositor.h
> index 22700b7..c87d9f1 100644
> --- a/src/compositor.h
> +++ b/src/compositor.h
> @@ -651,7 +651,8 @@ struct weston_subsurface {
> */
>
> struct weston_surface {
> - struct wl_resource resource;
> + struct wl_resource *resource;
> + struct wl_signal destroy_signal;
> struct weston_compositor *compositor;
> pixman_region32_t clip;
> pixman_region32_t damage;
> diff --git a/src/data-device.c b/src/data-device.c
> index 0decbb9..06d24f1 100644
> --- a/src/data-device.c
> +++ b/src/data-device.c
> @@ -230,11 +230,12 @@ weston_drag_set_focus(struct weston_drag *drag, struct
> weston_surface *surface,
> if (!surface)
> return;
>
> - if (!drag->data_source && surface->resource.client != drag->client)
> + if (!drag->data_source &&
> + wl_resource_get_client(surface->resource) != drag->client)
> return;
>
> resource = find_resource(&pointer->seat->drag_resource_list,
> - surface->resource.client);
> + wl_resource_get_client(surface->resource));
> if (!resource)
> return;
>
> @@ -244,7 +245,7 @@ weston_drag_set_focus(struct weston_drag *drag, struct
> weston_surface *surface,
> if (drag->data_source)
> offer = wl_data_source_send_offer(drag->data_source, resource);
>
> - wl_data_device_send_enter(resource, serial, &surface->resource,
> + wl_data_device_send_enter(resource, serial, surface->resource,
> sx, sy, offer);
>
> drag->focus = surface;
> @@ -405,7 +406,7 @@ data_device_start_drag(struct wl_client *client, struct
> wl_resource *resource,
> if (icon) {
> drag->icon = icon;
> drag->icon_destroy_listener.notify = handle_drag_icon_destroy;
> - wl_signal_add(&icon->resource.destroy_signal,
> + wl_signal_add(&icon->destroy_signal,
> &drag->icon_destroy_listener);
>
> icon->configure = drag_surface_configure;
> diff --git a/src/input.c b/src/input.c
> index d299d98..5463d78 100644
> --- a/src/input.c
> +++ b/src/input.c
> @@ -178,7 +178,7 @@ default_grab_touch_down(struct weston_touch_grab *grab,
> uint32_t time,
> display = wl_client_get_display(touch->focus_resource->client);
> serial = wl_display_next_serial(display);
> wl_touch_send_down(touch->focus_resource, serial, time,
> - &touch->focus->resource,
> + touch->focus->resource,
> touch_id, sx, sy);
> }
> }
> @@ -242,7 +242,7 @@ find_resource_for_surface(struct wl_list *list, struct
> weston_surface *surface)
> return NULL;
>
> wl_list_for_each(r, list, link) {
> - if (r->client == surface->resource.client)
> + if (r->client == wl_resource_get_client(surface->resource))
> return r;
> }
>
> @@ -437,7 +437,7 @@ weston_pointer_set_focus(struct weston_pointer *pointer,
> display = wl_client_get_display(resource->client);
> serial = wl_display_next_serial(display);
> wl_pointer_send_leave(resource, serial,
> - &pointer->focus->resource);
> + pointer->focus->resource);
> wl_list_remove(&pointer->focus_listener.link);
> }
>
> @@ -460,7 +460,7 @@ weston_pointer_set_focus(struct weston_pointer *pointer,
>
> kbd->modifiers.group);
> }
> }
> - wl_pointer_send_enter(resource, serial, &surface->resource,
> + wl_pointer_send_enter(resource, serial, surface->resource,
> sx, sy);
> wl_signal_add(&resource->destroy_signal,
> &pointer->focus_listener);
> @@ -485,7 +485,7 @@ weston_keyboard_set_focus(struct weston_keyboard
> *keyboard,
> display = wl_client_get_display(resource->client);
> serial = wl_display_next_serial(display);
> wl_keyboard_send_leave(resource, serial,
> - &keyboard->focus->resource);
> + keyboard->focus->resource);
> wl_list_remove(&keyboard->focus_listener.link);
> }
>
> @@ -501,7 +501,7 @@ weston_keyboard_set_focus(struct weston_keyboard
> *keyboard,
> keyboard->modifiers.mods_latched,
> keyboard->modifiers.mods_locked,
> keyboard->modifiers.group);
> - wl_keyboard_send_enter(resource, serial, &surface->resource,
> + wl_keyboard_send_enter(resource, serial, surface->resource,
> &keyboard->keys);
> wl_signal_add(&resource->destroy_signal,
> &keyboard->focus_listener);
> @@ -963,7 +963,7 @@ notify_keyboard_focus_out(struct weston_seat *seat)
> seat->saved_kbd_focus = keyboard->focus;
> seat->saved_kbd_focus_listener.notify =
> destroy_device_saved_kbd_focus;
> - wl_signal_add(&keyboard->focus->resource.destroy_signal,
> + wl_signal_add(&keyboard->focus->destroy_signal,
> &seat->saved_kbd_focus_listener);
> }
>
> @@ -1112,14 +1112,14 @@ pointer_set_cursor(struct wl_client *client, struct
> wl_resource *resource,
>
> if (pointer->focus == NULL)
> return;
> - if (pointer->focus->resource.client != client)
> + if (wl_resource_get_client(pointer->focus->resource) != client)
> return;
> if (pointer->focus_serial - serial > UINT32_MAX / 2)
> return;
>
> if (surface && surface != pointer->sprite) {
> if (surface->configure) {
> - wl_resource_post_error(&surface->resource,
> + wl_resource_post_error(surface->resource,
> WL_DISPLAY_ERROR_INVALID_OBJECT,
> "surface->configure already "
> "set");
> @@ -1133,7 +1133,7 @@ pointer_set_cursor(struct wl_client *client, struct
> wl_resource *resource,
> if (!surface)
> return;
>
> - wl_signal_add(&surface->resource.destroy_signal,
> + wl_signal_add(&surface->destroy_signal,
> &pointer->sprite_destroy_listener);
>
> surface->configure = pointer_cursor_surface_configure;
> @@ -1167,7 +1167,7 @@ seat_get_pointer(struct wl_client *client, struct
> wl_resource *resource,
> cr->destroy = unbind_resource;
>
> if (seat->pointer->focus &&
> - seat->pointer->focus->resource.client == client) {
> + wl_resource_get_client(seat->pointer->focus->resource) == client) {
> struct weston_surface *surface;
> wl_fixed_t sx, sy;
>
> @@ -1204,7 +1204,7 @@ seat_get_keyboard(struct wl_client *client, struct
> wl_resource *resource,
> seat->xkb_info.keymap_size);
>
> if (seat->keyboard->focus &&
> - seat->keyboard->focus->resource.client == client) {
> + wl_resource_get_client(seat->keyboard->focus->resource) == client) {
> weston_keyboard_set_focus(seat->keyboard,
> seat->keyboard->focus);
> wl_data_device_set_keyboard_focus(seat);
> diff --git a/src/shell.c b/src/shell.c
> index 3d10eef..57dbb0a 100644
> --- a/src/shell.c
> +++ b/src/shell.c
> @@ -2001,7 +2001,7 @@ popup_grab_focus(struct weston_pointer_grab *grab)
> pointer->x, pointer->y,
> &sx, &sy);
>
> - if (surface && surface->resource.client == client) {
> + if (surface && wl_resource_get_client(surface->resource) == client) {
> weston_pointer_set_focus(pointer, surface, sx, sy);
> } else {
> weston_pointer_set_focus(pointer, NULL,
> @@ -2263,7 +2263,7 @@ create_shell_surface(void *shell, struct weston_surface
> *surface,
>
> wl_signal_init(&shsurf->resource.destroy_signal);
> shsurf->surface_destroy_listener.notify = shell_handle_surface_destroy;
> - wl_signal_add(&surface->resource.destroy_signal,
> + wl_signal_add(&surface->destroy_signal,
> &shsurf->surface_destroy_listener);
>
> /* init link so its safe to always remove it in destroy_shell_surface */
> @@ -2937,8 +2937,7 @@ activate(struct desktop_shell *shell, struct
> weston_surface *es,
>
> state->keyboard_focus = es;
> wl_list_remove(&state->surface_destroy_listener.link);
> - wl_signal_add(&es->resource.destroy_signal,
> - &state->surface_destroy_listener);
> + wl_signal_add(&es->destroy_signal, &state->surface_destroy_listener);
>
> switch (get_shell_surface_type(main_surface)) {
> case SHELL_SURFACE_FULLSCREEN:
> @@ -3789,7 +3788,7 @@ create_input_panel_surface(struct desktop_shell *shell,
>
> wl_signal_init(&input_panel_surface->resource.destroy_signal);
> input_panel_surface->surface_destroy_listener.notify =
> input_panel_handle_surface_destroy;
> - wl_signal_add(&surface->resource.destroy_signal,
> + wl_signal_add(&surface->destroy_signal,
> &input_panel_surface->surface_destroy_listener);
>
> wl_list_init(&input_panel_surface->link);
> @@ -3956,7 +3955,7 @@ switcher_next(struct switcher *switcher)
> return;
>
> wl_list_remove(&switcher->listener.link);
> - wl_signal_add(&next->resource.destroy_signal, &switcher->listener);
> + wl_signal_add(&next->destroy_signal, &switcher->listener);
>
> switcher->current = next;
> next->alpha = 1.0;
> @@ -4213,7 +4212,7 @@ force_kill_binding(struct weston_seat *seat, uint32_t
> time, uint32_t key,
>
> wl_signal_emit(&compositor->kill_signal, focus_surface);
>
> - client = focus_surface->resource.client;
> + client = wl_resource_get_client(focus_surface->resource);
> wl_client_get_credentials(client, &pid, NULL, NULL);
>
> /* Skip clients that we launched ourselves (the credentials of
> diff --git a/src/tablet-shell.c b/src/tablet-shell.c
> index 91fbaed..d42ff16 100644
> --- a/src/tablet-shell.c
> +++ b/src/tablet-shell.c
> @@ -152,7 +152,7 @@ tablet_shell_surface_configure(struct weston_surface
> *surface,
> }
> } else if (shell->current_client &&
> shell->current_client->surface != surface &&
> - shell->current_client->client == surface->resource.client) {
> + shell->current_client->client ==
> wl_resource_get_client(surface->resource)) {
> tablet_shell_set_state(shell, STATE_TASK);
> shell->current_client->surface = surface;
> weston_zoom_run(surface, 0.3, 1.0, NULL, NULL);
> @@ -186,8 +186,7 @@ tablet_shell_set_lockscreen(struct wl_client *client,
> shell->lockscreen_surface = es;
> shell->lockscreen_surface->configure = tablet_shell_surface_configure;
> shell->lockscreen_listener.notify = handle_lockscreen_surface_destroy;
> - wl_signal_add(&es->resource.destroy_signal,
> - &shell->lockscreen_listener);
> + wl_signal_add(es->destroy_signal, &shell->lockscreen_listener);
> }
>
> static void
> @@ -218,7 +217,7 @@ tablet_shell_set_switcher(struct wl_client *client,
> weston_surface_set_position(shell->switcher_surface, 0, 0);
>
> shell->switcher_listener.notify = handle_switcher_surface_destroy;
> - wl_signal_add(&es->resource.destroy_signal, &shell->switcher_listener);
> + wl_signal_add(es->destroy_signal, &shell->switcher_listener);
> }
>
> static void
> diff --git a/src/xwayland/window-manager.c b/src/xwayland/window-manager.c
> index 366f2e0..5d003a9 100644
> --- a/src/xwayland/window-manager.c
> +++ b/src/xwayland/window-manager.c
> @@ -1621,7 +1621,7 @@ weston_wm_create(struct weston_xserver *wxs)
> }
>
> xserver_send_client(wxs->resource, sv[1]);
> - wl_client_flush(wxs->resource->client);
> + wl_client_flush(wl_resource_get_client(wxs->resource));
> close(sv[1]);
>
> /* xcb_connect_to_fd takes ownership of the fd. */
> @@ -1715,10 +1715,9 @@ surface_destroy(struct wl_listener *listener, void
> *data)
> static struct weston_wm_window *
> get_wm_window(struct weston_surface *surface)
> {
> - struct wl_resource *resource = &surface->resource;
> struct wl_listener *listener;
>
> - listener = wl_signal_get(&resource->destroy_signal, surface_destroy);
> + listener = wl_signal_get(&surface->destroy_signal, surface_destroy);
> if (listener)
> return container_of(listener, struct weston_wm_window,
> surface_destroy_listener);
> @@ -1850,9 +1849,10 @@ static void
> xserver_set_window_id(struct wl_client *client, struct wl_resource *resource,
> struct wl_resource *surface_resource, uint32_t id)
> {
> - struct weston_xserver *wxs = resource->data;
> + struct weston_xserver *wxs = wl_resource_get_user_data(resource);
> struct weston_wm *wm = wxs->wm;
> - struct weston_surface *surface = surface_resource->data;
> + struct weston_surface *surface =
> + wl_resource_get_user_data(surface_resource);
> struct weston_wm_window *window;
>
> if (client != wxs->client)
> @@ -1870,7 +1870,7 @@ xserver_set_window_id(struct wl_client *client, struct
> wl_resource *resource,
>
> window->surface = (struct weston_surface *) surface;
> window->surface_destroy_listener.notify = surface_destroy;
> - wl_signal_add(&surface->resource.destroy_signal,
> + wl_signal_add(&surface->destroy_signal,
> &window->surface_destroy_listener);
>
> weston_wm_window_schedule_repaint(window);
> diff --git a/src/zoom.c b/src/zoom.c
> index 292aed6..ec9db98 100644
> --- a/src/zoom.c
> +++ b/src/zoom.c
> @@ -40,7 +40,10 @@ text_cursor_position_notify(struct wl_client *client,
> struct wl_resource *surface_resource,
> wl_fixed_t x, wl_fixed_t y)
> {
> - weston_text_cursor_position_notify((struct weston_surface *)
> surface_resource, x, y);
> + struct weston_surface *surface =
> + wl_resource_get_user_data(surface_resource);
> +
> + weston_text_cursor_position_notify(surface, x, y);
> }
>
> struct text_cursor_position_interface text_cursor_position_implementation = {
> --
> 1.8.1.4
>
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