[RFC weston] Change weston_surface.resource to a wl_resource pointer.

Jason Ekstrand jason at jlekstrand.net
Thu Jun 6 20:34:41 PDT 2013


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.
---
 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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