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libweston: store backends in a list 

In preparation for multi-backend support, add a list of backends to the
weston_compositor structure. Until backends are converted, this list
just contains the single weston_compositor::backend. Keep that pointer
for now, until the conversion is complete.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
This commit is contained in:
Philipp Zabel 2021-02-16 12:25:38 +01:00 committed by Derek Foreman
parent 08018d3a28
commit 76372375ab
3 changed files with 29 additions and 4 deletions
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2
include/libweston/libweston.h
View File

@ -1440,6 +1440,8 @@ struct weston_compositor {
const struct pixel_format_info *read_format;
struct weston_backend *backend;
struct wl_list backend_list;
struct weston_launcher *launcher;
struct weston_dmabuf_feedback *default_dmabuf_feedback;

2
libweston/backend.h
View File

@ -40,6 +40,8 @@
struct weston_hdr_metadata_type1;
struct weston_backend {
struct wl_list link; /**< in weston_compositor::backend_list */
/** Bitfield of supported presentation clocks
*
* Bit positions correspond to system clock IDs.

29
libweston/compositor.c
View File

@ -8973,6 +8973,8 @@ weston_compositor_create(struct wl_display *display,
wl_list_init(&ec->debug_binding_list);
wl_list_init(&ec->tablet_manager_resource_list);
wl_list_init(&ec->backend_list);
wl_list_init(&ec->plugin_api_list);
wl_data_device_manager_init(ec->wl_display);
@ -9399,6 +9401,25 @@ weston_compositor_add_destroy_listener_once(struct weston_compositor *compositor
return true;
}
static void
weston_compositor_shutdown_backends(struct weston_compositor *compositor)
{
struct weston_backend *backend;
wl_list_for_each(backend, &compositor->backend_list, link)
if (backend->shutdown)
backend->shutdown(backend);
}
static void
weston_compositor_destroy_backends(struct weston_compositor *compositor)
{
struct weston_backend *backend, *tmp;
wl_list_for_each_safe(backend, tmp, &compositor->backend_list, link)
backend->destroy(backend);
}
/** Destroys the compositor.
*
* This function cleans up the compositor state and then destroys it.
@ -9417,13 +9438,11 @@ weston_compositor_destroy(struct weston_compositor *compositor)
weston_compositor_xkb_destroy(compositor);
if (compositor->backend && compositor->backend->shutdown)
compositor->backend->shutdown(compositor->backend);
weston_compositor_shutdown_backends(compositor);
weston_compositor_shutdown(compositor);
if (compositor->backend)
compositor->backend->destroy(compositor->backend);
weston_compositor_destroy_backends(compositor);
/* The backend is responsible for destroying the heads. */
assert(wl_list_empty(&compositor->head_list));
@ -9530,6 +9549,8 @@ weston_compositor_load_backend(struct weston_compositor *compositor,
return -1;
}
wl_list_insert(&compositor->backend_list, &compositor->backend->link);
return 0;
}