sieve/examples/main.go at main · guerinoni/sieve · GitHub

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package main

import (
	"bufio"
	"fmt"
	"os"
	"runtime"
	"sync"

	"github.com/guerinoni/sieve"
	lru "github.com/hashicorp/golang-lru/v2"
	s3fifo "github.com/scalalang2/golang-fifo/s3fifo"
	golangsieve "github.com/scalalang2/golang-fifo/sieve"
)

const fileName = "input"
const capacity = 100

func main() {
	// printMemoryUsage()

	file, err := os.Open(fileName)
	if err != nil {
		fmt.Println(err)
		return
	}
	defer file.Close()

	scanner := bufio.NewScanner(file)
	scanner.Split(bufio.ScanLines)

	data := make([]string, 0)
	for scanner.Scan() {
		data = append(data, scanner.Text())
	}

	var wg sync.WaitGroup
	wg.Add(5)

	go func() {
		missCountSieve := doSieve(data)
		fmt.Printf("Miss count sieve:			%d\n", missCountSieve)
		wg.Done()
	}()

	go func() {
		missCountSieveST := doSieveSingleThread(data)
		fmt.Printf("Miss count sieve-single-thread:		%d\n", missCountSieveST)
		wg.Done()
	}()

	go func() {
		missCountLRU := doLRU(data)
		fmt.Printf("Miss count golang-lru:			%d\n", missCountLRU)
		wg.Done()
	}()

	go func() {
		missCountFifo := doFifo(data)
		fmt.Printf("Miss count s3-fifo:			%d\n", missCountFifo)
		wg.Done()
	}()

	go func() {
		missCountGolangSieve := doGolangSieve(data)
		fmt.Printf("Miss count golang-sieve:		%d\n", missCountGolangSieve)
		wg.Done()
	}()

	wg.Wait()

	// printMemoryUsage()
}

func doSieve(input []string) int {
	mc := 0
	cache := sieve.New[string, string](capacity)

	for _, d := range input {
		if _, ok := cache.Get(d); !ok {
			mc += 1
			cache.Set(d, d)
		}
	}

	return mc
}

func doSieveSingleThread(input []string) int {
	mc := 0
	cache := sieve.NewSingleThread[string, string](capacity)

	for _, d := range input {
		if _, ok := cache.Get(d); !ok {
			mc += 1
			cache.Set(d, d)
		}
	}

	return mc
}

func doLRU(input []string) int {
	mc := 0
	cache, err := lru.New[string, string](capacity)
	if err != nil {
		fmt.Println(err)
		return mc
	}

	for _, d := range input {
		if _, ok := cache.Get(d); !ok {
			mc += 1
			cache.Add(d, d)
		}
	}

	return mc
}

func doFifo(input []string) int {
	mc := 0
	cache := s3fifo.New[string, string](capacity, 0) // 0 TTL = no expiration

	for _, d := range input {
		if _, ok := cache.Get(d); !ok {
			mc += 1
			cache.Set(d, d)
		}
	}

	return mc
}

func doGolangSieve(input []string) int {
	mc := 0
	cache := golangsieve.New[string, string](capacity, 0) // 0 TTL = no expiration

	for _, d := range input {
		if _, ok := cache.Get(d); !ok {
			mc += 1
			cache.Set(d, d)
		}
	}

	return mc
}

func printMemoryUsage() {
	var m runtime.MemStats
	runtime.ReadMemStats(&m)
	fmt.Printf("Alloc = %v KB\n", m.Alloc/1024)
	fmt.Printf("TotalAlloc = %v KB\n", m.TotalAlloc/1024)
	fmt.Printf("Sys = %v KB\n", m.Sys/1024)
	fmt.Printf("NumGC = %v\n", m.NumGC)
	fmt.Println("------")
}