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drm/syncobj: add timeline point merger utility

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This commit is contained in:
Félix Poisot 2025-01-31 18:43:23 +00:00
parent 1f3d351abb
commit e83a679e23
3 changed files with 179 additions and 0 deletions
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44
include/render/drm_syncobj_merger.h Normal file
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#ifndef WLR_RENDER_DRM_SYNCOBJ_MERGER_H
#define WLR_RENDER_DRM_SYNCOBJ_MERGER_H
#include <wayland-server-core.h>
/**
* Accumulate timeline points, to have a destination timeline point be
* signalled when all inputs are
*/
struct wlr_drm_syncobj_merger {
int n_ref;
struct wlr_drm_syncobj_timeline *dst_timeline;
uint64_t dst_point;
int sync_fd;
};
/**
* Create a new merger.
*
* The given timeline point will be signalled when all input points are
* signalled and the merger is destroyed.
*/
struct wlr_drm_syncobj_merger *wlr_drm_syncobj_merger_create(
struct wlr_drm_syncobj_timeline *dst_timeline, uint64_t dst_point);
struct wlr_drm_syncobj_merger *wlr_drm_syncobj_merger_ref(
struct wlr_drm_syncobj_merger *merger);
/**
* Target timeline point is materialized when all inputs are, and the merger is
* destroyed.
*/
void wlr_drm_syncobj_merger_unref(struct wlr_drm_syncobj_merger *merger);
/**
* Add a new timeline point to wait for.
*
* If the point is not materialized, the supplied event loop is used to schedule
* a wait.
*/
bool wlr_drm_syncobj_merger_add(struct wlr_drm_syncobj_merger *merger,
struct wlr_drm_syncobj_timeline *dst_timeline, uint64_t dst_point,
struct wl_event_loop *loop);
#endif