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compositor: replace role_data with role_resource 

This increases type safety, makes it more obvious that role_data
must represent the role object, and will allow for automatic
cleanup when the resource is destroyed.
This commit is contained in:
Simon Ser 2023-06-23 14:23:27 +02:00
parent 00f1870d35
commit 89cb484220
10 changed files with 43 additions and 38 deletions
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4
include/wlr/types/wlr_compositor.h
View File

@ -167,7 +167,7 @@ struct wlr_surface {
* The role object representing the role. NULL if the role isn't
* represented by any object or the object was destroyed.
*/
void *role_data;
struct wl_resource *role_resource;
struct {
struct wl_signal client_commit;
@ -247,7 +247,7 @@ bool wlr_surface_set_role(struct wlr_surface *surface, const struct wlr_surface_
* Set the role object for this surface. The surface must have a role and
* no already set role object.
*/
void wlr_surface_set_role_object(struct wlr_surface *surface, void *role_data);
void wlr_surface_set_role_object(struct wlr_surface *surface, struct wl_resource *role_resource);
/**
* Destroy the object representing the surface's role. If it doesn't exist,

20
types/wlr_compositor.c
View File

@ -37,7 +37,7 @@ static int max(int fst, int snd) {
static void surface_handle_destroy(struct wl_client *client,
struct wl_resource *resource) {
struct wlr_surface *surface = wlr_surface_from_resource(resource);
if (surface->role_data != NULL) {
if (surface->role_resource != NULL) {
wl_resource_post_error(resource,
WL_SURFACE_ERROR_DEFUNCT_ROLE_OBJECT,
"surface was destroyed before its role object");
@ -492,7 +492,7 @@ static void surface_commit_state(struct wlr_surface *surface,
}
if (surface->role != NULL && surface->role->commit != NULL &&
(surface->role_data != NULL || surface->role->no_object)) {
(surface->role_resource != NULL || surface->role->no_object)) {
surface->role->commit(surface);
}
@ -753,7 +753,7 @@ void wlr_surface_unmap(struct wlr_surface *surface) {
surface->mapped = false;
wl_signal_emit_mutable(&surface->events.unmap, NULL);
if (surface->role != NULL && surface->role->unmap != NULL &&
(surface->role_data != NULL || surface->role->no_object)) {
(surface->role_resource != NULL || surface->role->no_object)) {
surface->role->unmap(surface);
}
@ -779,7 +779,7 @@ bool wlr_surface_set_role(struct wlr_surface *surface, const struct wlr_surface_
}
return false;
}
if (surface->role_data != NULL) {
if (surface->role_resource != NULL) {
wl_resource_post_error(error_resource, error_code,
"Cannot reassign role %s to wl_surface@%" PRIu32 ", role object still exists",
role->name, wl_resource_get_id(surface->resource));
@ -790,23 +790,23 @@ bool wlr_surface_set_role(struct wlr_surface *surface, const struct wlr_surface_
return true;
}
void wlr_surface_set_role_object(struct wlr_surface *surface, void *role_data) {
void wlr_surface_set_role_object(struct wlr_surface *surface, struct wl_resource *role_resource) {
assert(surface->role != NULL);
assert(!surface->role->no_object);
assert(surface->role_data == NULL);
assert(role_data != NULL);
surface->role_data = role_data;
assert(surface->role_resource == NULL);
assert(role_resource != NULL);
surface->role_resource = role_resource;
}
void wlr_surface_destroy_role_object(struct wlr_surface *surface) {
if (surface->role_data == NULL) {
if (surface->role_resource == NULL) {
return;
}
wlr_surface_unmap(surface);
if (surface->role->destroy != NULL) {
surface->role->destroy(surface);
}
surface->role_data = NULL;
surface->role_resource = NULL;
}
uint32_t wlr_surface_lock_pending(struct wlr_surface *surface) {

24
types/wlr_input_method_v2.c
View File

@ -138,12 +138,14 @@ static void popup_surface_consider_map(struct wlr_input_popup_surface_v2 *popup_
}
static void popup_surface_surface_role_commit(struct wlr_surface *surface) {
struct wlr_input_popup_surface_v2 *popup_surface = surface->role_data;
struct wlr_input_popup_surface_v2 *popup_surface =
wlr_input_popup_surface_v2_try_from_wlr_surface(surface);
popup_surface_consider_map(popup_surface);
}
static void popup_surface_surface_role_destroy(struct wlr_surface *surface) {
struct wlr_input_popup_surface_v2 *popup_surface = surface->role_data;
struct wlr_input_popup_surface_v2 *popup_surface =
wlr_input_popup_surface_v2_try_from_wlr_surface(surface);
wl_signal_emit_mutable(&popup_surface->events.destroy, NULL);
wl_list_remove(&popup_surface->link);
@ -157,14 +159,6 @@ static const struct wlr_surface_role input_popup_surface_v2_role = {
.destroy = popup_surface_surface_role_destroy,
};
struct wlr_input_popup_surface_v2 *wlr_input_popup_surface_v2_try_from_wlr_surface(
struct wlr_surface *surface) {
if (surface->role != &input_popup_surface_v2_role) {
return NULL;
}
return (struct wlr_input_popup_surface_v2 *)surface->role_data;
}
static const struct zwp_input_popup_surface_v2_interface input_popup_impl;
static struct wlr_input_popup_surface_v2 *popup_surface_from_resource(struct wl_resource *resource) {
@ -173,6 +167,14 @@ static struct wlr_input_popup_surface_v2 *popup_surface_from_resource(struct wl_
return wl_resource_get_user_data(resource);
}
struct wlr_input_popup_surface_v2 *wlr_input_popup_surface_v2_try_from_wlr_surface(
struct wlr_surface *surface) {
if (surface->role != &input_popup_surface_v2_role || surface->role_resource == NULL) {
return NULL;
}
return popup_surface_from_resource(surface->role_resource);
}
static void popup_resource_destroy(struct wl_resource *resource) {
struct wlr_input_popup_surface_v2 *popup_surface =
popup_surface_from_resource(resource);
@ -225,7 +227,7 @@ static void im_get_input_popup_surface(struct wl_client *client,
wl_resource_set_implementation(popup_resource, &input_popup_impl,
popup_surface, popup_resource_destroy);
wlr_surface_set_role_object(surface, popup_surface);
wlr_surface_set_role_object(surface, popup_resource);
popup_surface->resource = popup_resource;
popup_surface->input_method = input_method;

6
types/wlr_layer_shell_v1.c
View File

@ -40,10 +40,10 @@ static const struct wlr_surface_role layer_surface_role;
struct wlr_layer_surface_v1 *wlr_layer_surface_v1_try_from_wlr_surface(
struct wlr_surface *surface) {
if (surface->role != &layer_surface_role) {
if (surface->role != &layer_surface_role || surface->role_resource == NULL) {
return NULL;
}
return (struct wlr_layer_surface_v1 *)surface->role_data;
return wlr_layer_surface_v1_from_resource(surface->role_resource);
}
static void layer_surface_configure_destroy(
@ -445,7 +445,7 @@ static void layer_shell_handle_get_layer_surface(struct wl_client *wl_client,
wl_resource_set_implementation(surface->resource,
&layer_surface_implementation, surface, layer_surface_resource_destroy);
wlr_surface_set_role_object(wlr_surface, surface);
wlr_surface_set_role_object(wlr_surface, surface->resource);
}
static const struct zwlr_layer_shell_v1_interface layer_shell_implementation = {

6
types/wlr_session_lock_v1.c
View File

@ -50,10 +50,10 @@ static const struct wlr_surface_role lock_surface_role;
struct wlr_session_lock_surface_v1 *wlr_session_lock_surface_v1_try_from_wlr_surface(
struct wlr_surface *surface) {
if (surface->role != &lock_surface_role) {
if (surface->role != &lock_surface_role || surface->role_resource == NULL) {
return NULL;
}
return (struct wlr_session_lock_surface_v1 *)surface->role_data;
return lock_surface_from_resource(surface->role_resource);
}
uint32_t wlr_session_lock_surface_v1_configure(
@ -274,7 +274,7 @@ static void lock_handle_get_lock_surface(struct wl_client *client,
lock_surface->resource = lock_surface_resource;
wl_resource_set_user_data(lock_surface_resource, lock_surface);
wlr_surface_set_role_object(surface, lock_surface);
wlr_surface_set_role_object(surface, lock_surface_resource);
wl_list_insert(&lock->surfaces, &lock_surface->link);

6
types/wlr_subcompositor.c
View File

@ -293,10 +293,10 @@ void subsurface_handle_parent_commit(struct wlr_subsurface *subsurface) {
}
struct wlr_subsurface *wlr_subsurface_try_from_wlr_surface(struct wlr_surface *surface) {
if (surface->role != &subsurface_role) {
if (surface->role != &subsurface_role || surface->role_resource == NULL) {
return NULL;
}
return (struct wlr_subsurface *)surface->role_data;
return subsurface_from_resource(surface->role_resource);
}
static void subcompositor_handle_destroy(struct wl_client *client,
@ -344,7 +344,7 @@ static void subcompositor_handle_get_subsurface(struct wl_client *client,
wl_resource_set_implementation(subsurface->resource,
&subsurface_implementation, subsurface, subsurface_resource_destroy);
wlr_surface_set_role_object(surface, subsurface);
wlr_surface_set_role_object(surface, subsurface->resource);
wl_signal_init(&subsurface->events.destroy);

2
types/xdg_shell/wlr_xdg_popup.c
View File

@ -412,7 +412,7 @@ void create_xdg_popup(struct wlr_xdg_surface *surface,
&xdg_popup_implementation, surface->popup,
xdg_popup_handle_resource_destroy);
wlr_surface_set_role_object(surface->surface, surface);
wlr_surface_set_role_object(surface->surface, surface->resource);
surface->role = WLR_XDG_SURFACE_ROLE_POPUP;

5
types/xdg_shell/wlr_xdg_surface.c
View File

@ -11,7 +11,10 @@ struct wlr_xdg_surface *wlr_xdg_surface_try_from_wlr_surface(
surface->role != &xdg_popup_surface_role) {
return NULL;
}
return (struct wlr_xdg_surface *)surface->role_data;
if (surface->role_resource == NULL) {
return NULL;
}
return wlr_xdg_surface_from_resource(surface->role_resource);
}
static void xdg_surface_configure_destroy(

2
types/xdg_shell/wlr_xdg_toplevel.c
View File

@ -524,7 +524,7 @@ void create_xdg_toplevel(struct wlr_xdg_surface *surface,
&xdg_toplevel_implementation, surface->toplevel,
xdg_toplevel_handle_resource_destroy);
wlr_surface_set_role_object(surface->surface, surface);
wlr_surface_set_role_object(surface->surface, surface->resource);
surface->role = WLR_XDG_SURFACE_ROLE_TOPLEVEL;
}

6
xwayland/shell.c
View File

@ -38,7 +38,7 @@ static struct wlr_xwayland_surface_v1 *xwl_surface_from_resource(
}
static void xwl_surface_role_commit(struct wlr_surface *surface) {
struct wlr_xwayland_surface_v1 *xwl_surface = surface->role_data;
struct wlr_xwayland_surface_v1 *xwl_surface = xwl_surface_from_resource(surface->role_resource);
if (xwl_surface->serial != 0 && !xwl_surface->added) {
xwl_surface->added = true;
@ -48,7 +48,7 @@ static void xwl_surface_role_commit(struct wlr_surface *surface) {
}
static void xwl_surface_role_destroy(struct wlr_surface *surface) {
struct wlr_xwayland_surface_v1 *xwl_surface = surface->role_data;
struct wlr_xwayland_surface_v1 *xwl_surface = xwl_surface_from_resource(surface->role_resource);
wl_list_remove(&xwl_surface->surface_destroy.link);
wl_list_remove(&xwl_surface->link);
wl_resource_set_user_data(xwl_surface->resource, NULL); // make inert
@ -131,7 +131,7 @@ static void shell_handle_get_xwayland_surface(struct wl_client *client,
wl_resource_set_implementation(xwl_surface->resource, &xwl_surface_impl,
xwl_surface, xwl_surface_handle_resource_destroy);
wlr_surface_set_role_object(surface, xwl_surface);
wlr_surface_set_role_object(surface, xwl_surface->resource);
wl_list_insert(&shell->surfaces, &xwl_surface->link);