FreeBSD Manual Pages
DRMHANDLEEVENT(3) Direct Rendering Manager DRMHANDLEEVENT(3) NAME drmHandleEvent - read and process pending DRM events SYNOPSIS #include <xf86drm.h> int drmHandleEvent(int fd, drmEventContextPtr evctx); DESCRIPTION drmHandleEvent processes outstanding DRM events on the DRM file-descriptor passed as fd. This function should be called after the DRM file-descriptor has polled readable; it will read the events and use the passed-in evctx structure to call function pointers with the parameters noted below: typedef struct _drmEventContext { int version; void (*vblank_handler) (int fd, unsigned int sequence, unsigned int tv_sec, unsigned int tv_usec, void *user_data) void (*page_flip_handler) (int fd, unsigned int sequence, unsigned int tv_sec, unsigned int tv_usec, void *user_data) } drmEventContext, *drmEventContextPtr; RETURN VALUE drmHandleEvent returns 0 on success, or if there is no data to read from the file-descriptor. Returns -1 if the read on the file-descriptor fails or returns less than a full event record. REPORTING BUGS Bugs in this function should be reported to <https://gitlab.freedesktop.org/mesa/libdrm/-/issues> SEE ALSO drm(7), drm-kms(7), drmModePageFlip(3), drmWaitVBlank(3) September 2012 DRMHANDLEEVENT(3)
NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | REPORTING BUGS | SEE ALSO
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