81 lines
2.3 KiB
Groff
81 lines
2.3 KiB
Groff
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.TH "DRMHANDLEEVENT" 3 "September 2012" "" "Direct Rendering Manager"
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.SH NAME
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drmHandleEvent \- read and process pending DRM events
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.SH SYNOPSIS
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.sp
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\fB#include <xf86drm.h>\fP
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.sp
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\fBint drmHandleEvent(int fd, drmEventContextPtr evctx);\fP
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.SH DESCRIPTION
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.sp
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\fBdrmHandleEvent\fP processes outstanding DRM events on the DRM
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file\-descriptor passed as \fBfd\fP\&. 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 \fBevctx\fP structure to call function pointers with the
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parameters noted below:
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.INDENT 0.0
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.INDENT 3.5
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.sp
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.nf
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.ft C
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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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.ft P
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.fi
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.UNINDENT
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.SH RETURN VALUE
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.sp
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\fBdrmHandleEvent\fP 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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.SH REPORTING BUGS
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.sp
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Bugs in this function should be reported to
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\fI\%https://gitlab.freedesktop.org/mesa/drm/\-/issues\fP
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.SH SEE ALSO
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.sp
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\fBdrm\fP(7), \fBdrm\-kms\fP(7), \fBdrmModePageFlip\fP(3),
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\fBdrmWaitVBlank\fP(3)
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.\" Generated by docutils manpage writer.
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