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other versions
- stretch 2.4.74-1
- testing 2.4.97-1
- stretch-backports 2.4.95-1~bpo9+1
- unstable 2.4.97-1
DRMHANDLEEVENT(3) | Direct Rendering Manager | DRMHANDLEEVENT(3) |
NAME¶
drmHandleEvent - read and process pending DRM eventsSYNOPSIS¶
#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 http://bugs.freedesktop.org under the "Mesa" product, with "Other" or "libdrm" as the component.SEE ALSO¶
drm(7), drm-kms(7), drmModePageFlip(3), drmWaitVBlank(3)September 2012 | libdrm |