github.com/sethvargo/go-limiter@v1.0.0/internal/fasttime/fasttime.go (about) 1 //go:build !windows 2 3 // Package fasttime gets wallclock time, but super fast. 4 package fasttime 5 6 import ( 7 _ "unsafe" 8 ) 9 10 //go:noescape 11 //go:linkname now time.now 12 func now() (sec int64, nsec int32, mono int64) 13 14 // Now returns a monotonic and wall clock value. The actual value will differ 15 // across systems, but that's okay because we generally only care about the 16 // deltas. 17 func Now() uint64 { 18 sec, nsec, _ := now() 19 return uint64(sec)*1e9 + uint64(nsec) 20 }