tind/examples/collisions.go

59 lines
1.3 KiB
Go

package main
import (
"sync"
log "git.staur.ca/stobbsm/simplelog"
"git.staur.ca/stobbsm/tind"
)
var (
RuneSet = []rune("0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz!@#$%^&*()_+-=[]{}/';:.>,<`~")
)
const runs uint64 = 10000
// CollisionChecks runs different tests to check for collisions, and get's the average
func CollisionChecks() {
wg := new(sync.WaitGroup)
log.Info("examples.CollisionChecks").Msg("Using multiple configurations, test for collisions multiple times")
sizes := []int{4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16}
end := len(RuneSet)
for i := 4; i < end; i++ {
for _, v := range sizes {
v := v
rs := RuneSet[:i]
wg.Add(1)
go collisionCheck(v, rs, wg, len(rs))
}
}
wg.Wait()
}
func collisionCheck(size int, runeset []rune, wg *sync.WaitGroup, runesize int) {
defer wg.Done()
var total uint64
for i := uint64(0); i < runs; i++ {
total += runCheck(tind.New().WithSize(size).WithRuneset(runeset))
}
log.Info("examples.collisionCheck").
Uint64("average iterations", total/runs).
Int("runesize", runesize).
Int("size", size).
Send()
}
func runCheck(tconfig *tind.Config) uint64 {
var i uint64
tmap := make(map[string]struct{})
for {
i++
t := tconfig.Gen()
if _, ok := tmap[t.String()]; ok {
return i
}
tmap[t.String()] = struct{}{}
}
}