DRMHANDLEEVENT(3) Direct Rendering Manager DRMHANDLEEVENT(3)NAMEdrmHandleEvent - read and process pending DRM events
SYNOPSIS
#include <xf86drm.h>
int drmHandleEvent(int fd, drmEventContextPtr evctx);
DESCRIPTIONdrmHandleEvent 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 VALUEdrmHandleEvent 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 http://bugs.freedesktop.org
under the "Mesa" product, with "Other" or "libdrm" as the component.
SEE ALSOdrm(7), drm-kms(7), drmModePageFlip(3), drmWaitVBlank(3)libdrm September 2012 DRMHANDLEEVENT(3)