Queries the system monotonic time, if available.
On POSIX systems with clock_gettime() and CLOCK_MONOTONIC this call
is a very shallow wrapper for that. Otherwise, we make a best effort
that probably involves returning the wall clock time (with at least
microsecond accuracy, subject to the limitations of the OS kernel).
Note that, on Windows, "limitations of the OS kernel" is a rather
substantial statement. Depending on the configuration of the system,
the wall clock time is updated as infrequently as 64 times a second
(which is approximately every 16ms).
Since 2.28
Queries the system monotonic time, if available. On POSIX systems with clock_gettime() and CLOCK_MONOTONIC this call is a very shallow wrapper for that. Otherwise, we make a best effort that probably involves returning the wall clock time (with at least microsecond accuracy, subject to the limitations of the OS kernel). Note that, on Windows, "limitations of the OS kernel" is a rather substantial statement. Depending on the configuration of the system, the wall clock time is updated as infrequently as 64 times a second (which is approximately every 16ms). Since 2.28