mirror of https://github.com/minio/minio.git
50 lines
911 B
Go
50 lines
911 B
Go
// +build ignore
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package main
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import (
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"crypto/sha1"
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"encoding/hex"
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"fmt"
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"io"
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"os"
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"time"
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sha1intel "github.com/minio-io/minio/pkg/utils/crypto/sha1"
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)
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func Sum(reader io.Reader) ([]byte, error) {
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k := sha1.New()
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var err error
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for err == nil {
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length := 0
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byteBuffer := make([]byte, 1024*1024)
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length, err = reader.Read(byteBuffer)
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byteBuffer = byteBuffer[0:length]
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k.Write(byteBuffer)
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}
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if err != io.EOF {
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return nil, err
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}
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return k.Sum(nil), nil
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}
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func main() {
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fmt.Println("-- start")
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file1, _ := os.Open("filename1")
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defer file1.Close()
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stark := time.Now()
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sum, _ := Sum(file1)
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endk := time.Since(stark)
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file2, _ := os.Open("filename2")
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defer file2.Close()
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starth := time.Now()
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sumAVX2, _ := sha1intel.Sum(file2)
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endh := time.Since(starth)
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fmt.Println("std(", endk, ")", "avx2(", endh, ")")
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fmt.Println(hex.EncodeToString(sum), hex.EncodeToString(sumAVX2))
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}
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