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backend: destroy multi backend when primary backend is

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This makes it easy for compositors to handle situations where the
DRM or libinput backend becomes unavailable. Compositors can listen
the destroy event of the multi backend returned by
wlr_backend_autocreate() and decide what to do.
This commit is contained in:
Simon Ser 2023-11-23 14:53:06 +01:00 • committed by Kirill Primak
parent be0b7845f7
commit 4ad6e6c298
2 changed files with 67 additions and 2 deletions
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3
include/wlr/backend.h
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@ -37,6 +37,9 @@ struct wlr_backend {
*
* If session_ptr is not NULL, it's populated with the session which has been
* created with the backend, if any.
*
* The multi-backend will be destroyed if one of the primary underlying
* backends is destroyed (e.g. if the primary DRM device is unplugged).
*/
struct wlr_backend *wlr_backend_autocreate(struct wl_display *display,
struct wlr_session **session_ptr);