tree 150e8cc382de72de8bb1be408d20701e2cb76c77
parent e4e905700327f9f85791b23f09185ba84baa7549
author Chris Dickens <christopher.a.dickens@gmail.com> 1579715017 -0800
committer Chris Dickens <christopher.a.dickens@gmail.com> 1579715017 -0800

Windows: Kill the dedicated thread for monotonic clock_gettime()

According to Microsoft, anything prior to Vista could provide
inconsistent results for the value of QueryPerformanceCounter() across
different cores. Now that XP is no longer supported, we can drop the
significant overhead of using a dedicated thread pinned to a single core
just to read a timestamp.

The C++11 steady_clock implementation directly wraps
QueryPerformanceCounter(), so if it is good enough for that then it is
good enough for our purposes.

Signed-off-by: Chris Dickens <christopher.a.dickens@gmail.com>