tree 28c99402b393be6462829e1cea6dd248623853c3
parent 37ad7e3bae090c8791dc638bfc3f952fb5c12acf
author Daniel Stone <daniels@collabora.com> 1488368043 +0000
committer Pekka Paalanen <pekka.paalanen@collabora.co.uk> 1489407606 +0200

timespec: Add timespec subtraction helpers

Add helpers to subtract two timespecs, then return the difference in
either milliseconds or nanoseconds. These will be used to compare
timestamps during the repaint cycle.

Signed-off-by: Daniel Stone <daniels@collabora.com>
Suggested-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
Reviewed-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>