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==============
drmHandleEvent
==============
-----------------------------------
read and process pending DRM events
-----------------------------------
:Date: September 2012
:Manual section: 3
:Manual group: Direct Rendering Manager
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/drm/-/issues
See Also
========
**drm**\ (7), **drm-kms**\ (7), **drmModePageFlip**\ (3),
**drmWaitVBlank**\ (3)
|
