optimize: high cpu

common/utils.go

@@ -13,6 +13,7 @@ import (
 	"strconv"
 	"strings"
 	"time"
+	"unsafe"
 )
 
 func OpenBrowser(url string) {
@@ -138,11 +139,12 @@ func GetUUID() string {
 const keyChars = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
 
 func init() {
-	rand.Seed(time.Now().UnixNano())
+	if !strings.Contains(runtime.Version(), "go1.2") { // go1.20之前版本需要全局 seed，其他插件无需再 seed
+		rand.Seed(time.Now().UnixNano()) //nolint: staticcheck
+	}
 }
 
 func GenerateKey() string {
-	rand.Seed(time.Now().UnixNano())
 	key := make([]byte, 48)
 	for i := 0; i < 16; i++ {
 		key[i] = keyChars[rand.Intn(len(keyChars))]
@@ -159,7 +161,6 @@ func GenerateKey() string {
 }
 
 func GetRandomString(length int) string {
-	rand.Seed(time.Now().UnixNano())
 	key := make([]byte, length)
 	for i := 0; i < length; i++ {
 		key[i] = keyChars[rand.Intn(len(keyChars))]
@@ -207,3 +208,10 @@ func String2Int(str string) int {
 	}
 	return num
 }
+
+// []byte only read, panic on append
+func StringToByteSlice(s string) []byte {
+	tmp1 := (*[2]uintptr)(unsafe.Pointer(&s))
+	tmp2 := [3]uintptr{tmp1[0], tmp1[1], tmp1[1]}
+	return *(*[]byte)(unsafe.Pointer(&tmp2))
+}