63 lines
1.7 KiB
ReStructuredText
63 lines
1.7 KiB
ReStructuredText
==============
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drmHandleEvent
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==============
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-----------------------------------
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read and process pending DRM events
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-----------------------------------
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:Date: September 2012
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:Manual section: 3
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:Manual group: Direct Rendering Manager
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Synopsis
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========
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``#include <xf86drm.h>``
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``int drmHandleEvent(int fd, drmEventContextPtr evctx);``
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Description
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===========
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``drmHandleEvent`` processes outstanding DRM events on the DRM
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file-descriptor passed as ``fd``. This function should be called after
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the DRM file-descriptor has polled readable; it will read the events and
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use the passed-in ``evctx`` structure to call function pointers with the
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parameters noted below:
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::
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typedef struct _drmEventContext {
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int version;
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void (*vblank_handler) (int fd,
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unsigned int sequence,
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unsigned int tv_sec,
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unsigned int tv_usec,
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void *user_data)
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void (*page_flip_handler) (int fd,
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unsigned int sequence,
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unsigned int tv_sec,
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unsigned int tv_usec,
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void *user_data)
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} drmEventContext, *drmEventContextPtr;
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Return Value
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============
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``drmHandleEvent`` returns 0 on success, or if there is no data to
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read from the file-descriptor. Returns -1 if the read on the
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file-descriptor fails or returns less than a full event record.
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Reporting Bugs
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==============
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Bugs in this function should be reported to
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https://gitlab.freedesktop.org/mesa/drm/-/issues
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See Also
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========
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**drm**\ (7), **drm-kms**\ (7), **drmModePageFlip**\ (3),
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**drmWaitVBlank**\ (3)
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