drmHandleEvent(libdrm 2.4.40) drmHandleEvent(libdrm 2.4.40)
NAME
drmHandleEvent - read and process pending DRM events
SYNOPSIS
#include <xf86drm.h>
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;
int drmHandleEvent(int fd, drmEventContextPtr evctx);
DESCRIPTION
This function will process outstanding DRM events on fd , which must be an open DRM device. 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 above.
RETURN VALUE
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 compo-
nent.
SEE ALSO
drmModePageFlip(3), drmWaitVBlank(3)
drmHandleEvent(libdrm 2.4.40)
