tree 037a56fa8b086674ccac9d78c44dbed6fa6d69e0
parent bce0f038383c54dc3da515610893abeefe3be045
author Ed Tanous <edtanous@google.com> 1631743619 -0700
committer Ed Tanous <ed@tanous.net> 1658157534 +0000

Enable an io-uring build

There exists a bug where calls that we previously thought were
non-blocking, actually do block when used with hwmon or filesystem fds.
This causes high latencies on the dbus interfaces when lots of sensors
are used in a single daemon, as is the case in PSUSensor.

This patchset moves the PSUSensor code over to using io-uring, through
boost asio, using the random_access_file class.  This helps with
performance in a number of ways, the largest of which being that sensor
reads are no longer blocking.

Tested:

Booted the sensor system on Tyan S7106;  dbus-monitor shows sensors
scanning normally.

Signed-off-by: Ed Tanous <edtanous@google.com>
Change-Id: I654eafcfab5a24b65b89c204ab43d81c7ae064cf