1package sys
 2
 3// ClockResolution is a positive granularity of clock precision in
 4// nanoseconds. For example, if the resolution is 1us, this returns 1000.
 5//
 6// Note: Some implementations return arbitrary resolution because there's
 7// no perfect alternative. For example, according to the source in time.go,
 8// windows monotonic resolution can be 15ms. See /RATIONALE.md.
 9type ClockResolution uint32
10
11// Walltime returns the current unix/epoch time, seconds since midnight UTC
12// 1 January 1970, with a nanosecond fraction.
13type Walltime func() (sec int64, nsec int32)
14
15// Nanotime returns nanoseconds since an arbitrary start point, used to measure
16// elapsed time. This is sometimes referred to as a tick or monotonic time.
17//
18// Note: There are no constraints on the value return except that it
19// increments. For example, -1 is a valid if the next value is >= 0.
20type Nanotime func() int64
21
22// Nanosleep puts the current goroutine to sleep for at least ns nanoseconds.
23type Nanosleep func(ns int64)
24
25// Osyield yields the processor, typically to implement spin-wait loops.
26type Osyield func()