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Add wl_resource_init and use it in libwayland implementations of data sharing and SHM

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This commit adds a wl_resource_init function for initializing wl_resource
structures similar to wl_client_add_object.

From this commit forward, wl_resource structures should not be initialized
manually, but should use wl_resource_init.  In the event of a change to the
wl_resource structure, this allows us to protect against regressions by filling
in added fields with reasonable defaults.  In this way, while changing
wl_object or wl_resource still constitutes an ABI break, compositors following
this rule will only need to be recompiled in order to properly link against the
new version.

Signed-off-by: Jason Ekstrand <jason@jlekstrand.net>
This commit is contained in:
Jason Ekstrand 2013-03-08 22:26:13 -06:00 • committed by Kristian Høgsberg
parent ca5b1946cb
commit bedc3432ff
4 changed files with 27 additions and 35 deletions
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16
src/data-device.c
View file

@ -98,13 +98,9 @@ wl_data_source_send_offer(struct wl_data_source *source,
if (offer == NULL)
return NULL;
wl_resource_init(&offer->resource, &wl_data_offer_interface,
&data_offer_interface, 0, offer);
offer->resource.destroy = destroy_data_offer;
offer->resource.object.id = 0;
offer->resource.object.interface = &wl_data_offer_interface;
offer->resource.object.implementation =
(void (**)(void)) &data_offer_interface;
offer->resource.data = offer;
wl_signal_init(&offer->resource.destroy_signal);
offer->source = source;
offer->source_destroy_listener.notify = destroy_offer_data_source;
@ -459,13 +455,9 @@ create_data_source(struct wl_client *client,
return;
}
wl_resource_init(&source->resource, &wl_data_source_interface,
&data_source_interface, id, source);
source->resource.destroy = destroy_data_source;
source->resource.object.id = id;
source->resource.object.interface = &wl_data_source_interface;
source->resource.object.implementation =
(void (**)(void)) &data_source_interface;
source->resource.data = source;
wl_signal_init(&source->resource.destroy_signal);
source->accept = client_source_accept;
source->send = client_source_send;

6
src/wayland-server.c
View file

@ -1396,13 +1396,9 @@ wl_client_add_object(struct wl_client *client,
return NULL;
}
resource->object.interface = interface;
resource->object.implementation = implementation;
resource->object.id = id;
wl_resource_init(resource, interface, implementation, id, data);
resource->client = client;
resource->data = data;
resource->destroy = (void *) free;
wl_signal_init(&resource->destroy_signal);
if (wl_map_insert_at(&client->objects, resource->object.id, resource) < 0) {
wl_resource_post_error(client->display_resource,

16
src/wayland-server.h
View file

@ -190,6 +190,22 @@ struct wl_resource {
void *data;
};
static inline void
wl_resource_init(struct wl_resource *resource,
const struct wl_interface *interface,
const void *implementation, uint32_t id, void *data)
{
resource->object.id = id;
resource->object.interface = interface;
resource->object.implementation = implementation;
wl_signal_init(&resource->destroy_signal);
resource->destroy = NULL;
resource->client = NULL;
resource->data = data;
}
struct wl_buffer {
struct wl_resource resource;
int32_t width, height;

24
src/wayland-shm.c
View file

@ -128,12 +128,8 @@ shm_pool_create_buffer(struct wl_client *client, struct wl_resource *resource,
buffer->pool = pool;
pool->refcount++;
buffer->buffer.resource.object.id = id;
buffer->buffer.resource.object.interface = &wl_buffer_interface;
buffer->buffer.resource.object.implementation = (void (**)(void))
&shm_buffer_interface;
buffer->buffer.resource.data = buffer;
wl_resource_init(&buffer->buffer.resource, &wl_buffer_interface,
&shm_buffer_interface, id, buffer);
buffer->buffer.resource.client = resource->client;
buffer->buffer.resource.destroy = destroy_buffer;
@ -211,12 +207,8 @@ shm_create_pool(struct wl_client *client, struct wl_resource *resource,
}
close(fd);
pool->resource.object.id = id;
pool->resource.object.interface = &wl_shm_pool_interface;
pool->resource.object.implementation =
(void (**)(void)) &shm_pool_interface;
pool->resource.data = pool;
wl_resource_init(&pool->resource, &wl_shm_pool_interface,
&shm_pool_interface, id, pool);
pool->resource.client = client;
pool->resource.destroy = destroy_pool;
@ -283,12 +275,8 @@ wl_shm_buffer_create(struct wl_client *client,
buffer->offset = 0;
buffer->pool = NULL;
buffer->buffer.resource.object.id = id;
buffer->buffer.resource.object.interface = &wl_buffer_interface;
buffer->buffer.resource.object.implementation = (void (**)(void))
&shm_buffer_interface;
buffer->buffer.resource.data = buffer;
wl_resource_init(&buffer->buffer.resource, &wl_buffer_interface,
&shm_buffer_interface, id, buffer);
buffer->buffer.resource.client = client;
buffer->buffer.resource.destroy = destroy_buffer;