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drm-timeline: Add meta_drm_timeline_create_syncobj

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Creates a kernel syncobj and returns a file descriptor representing it.

v2:
* Call drmSyncobjDestroy also after drmSyncobjHandleToFD returns 0, or
  we leak the original syncobj reference. (Sebastian Wick)
* Add errno based error messages.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3876>
This commit is contained in:
Michel Dänzer 2024-06-27 18:02:33 +02:00 • committed by Marge Bot
parent fcf1a5163d
commit 12d12eb278
2 changed files with 34 additions and 0 deletions
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31
src/common/meta-drm-timeline.c
View file

@ -141,6 +141,37 @@ initable_iface_init (GInitableIface *initable_iface)
initable_iface->init = meta_drm_timeline_initable_init;
}
int
meta_drm_timeline_create_syncobj (int drm_fd,
GError **error)
{
uint32_t syncobj_handle;
int syncobj_fd;
if (drmSyncobjCreate (drm_fd, 0, &syncobj_handle))
{
g_set_error (error,
G_IO_ERROR,
G_IO_ERROR_FAILED,
"drmSyncobjCreate failed: %s",
g_strerror (errno));
return -1;
}
if (drmSyncobjHandleToFD (drm_fd, syncobj_handle, &syncobj_fd) < 0)
{
syncobj_fd = -1;
g_set_error (error,
G_IO_ERROR,
G_IO_ERROR_FAILED,
"drmSyncobjHandleToFD failed: %s",
g_strerror (errno));
}
drmSyncobjDestroy (drm_fd, syncobj_handle);
return syncobj_fd;
}
MetaDrmTimeline *
meta_drm_timeline_import_syncobj (int fd,
int drm_syncobj,

3
src/common/meta-drm-timeline.h
View file

@ -30,6 +30,9 @@ G_DECLARE_FINAL_TYPE (MetaDrmTimeline, meta_drm_timeline,
typedef struct _MetaDrmTimeline MetaDrmTimeline;
int meta_drm_timeline_create_syncobj (int fd,
GError **error);
MetaDrmTimeline * meta_drm_timeline_import_syncobj (int fd,
int drm_syncobj,
GError **error);