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package lightstep
import (
"runtime"
"time"
"github.com/lightstep/lightstep-tracer-go/lightstep/rand"
)
var (
// create a random pool with size equal to 16 generators or number of CPU Cores which ever is higher to spread
// random int call loads across multiple go routines. This number is obtained via local benchmarking
// where any number more than 16 reaches a point of diminishing return given the test scenario.
randompool = rand.NewPool(time.Now().UnixNano(), uint64(max(16, runtime.NumCPU())))
)
// max returns the larger value among a and b
func max(x, y int) int {
if x > y {
return x
}
return y
}
func genSeededGUID() uint64 {
return uint64(randompool.Pick().Int63())
}
func genSeededGUID2() (uint64, uint64) {
n1, n2 := randompool.Pick().TwoInt63()
return uint64(n1), uint64(n2)
}
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