改进随机数生成缓冲区

g/util/grand/grand_intn.go

@@ -9,6 +9,7 @@ package grand
 import (
     "crypto/rand"
     "encoding/binary"
+    "time"
 )
 
 const (
@@ -21,14 +22,34 @@ var (
 
 // 使用缓冲区实现快速的随机数生成
 func init() {
+    step   := 0
     buffer := make([]byte, 1024)
     go func() {
         for {
             if n, err := rand.Read(buffer); err != nil {
                 panic(err)
             } else {
-                for i := 0; i < n - 8; i += 8 {
+                // 使用缓冲区数据进行一次完整的随机数生成
+                for i := 0; i < n - 8; {
                     bufferChan <- binary.LittleEndian.Uint64(buffer[i : i + 8])
+                    i ++
+                }
+                // 充分利用缓冲区数据，随机索引递增
+                step = int(time.Now().UnixNano()%10)
+                for i := 0; i < n - 8; {
+                    bufferChan <- binary.LittleEndian.Uint64(buffer[i : i + 8])
+                    i += step
+                }
+                // 充分利用缓冲区数据，字节倒序生成
+                for i := 0; i < n - 8; {
+                    bufferChan <- binary.BigEndian.Uint64(buffer[i : i + 8])
+                    i ++
+                }
+                // 充分利用缓冲区数据，字节倒序生成，随机索引递增
+                step = int(time.Now().UnixNano()%10)
+                for i := 0; i < n - 8; {
+                    bufferChan <- binary.BigEndian.Uint64(buffer[i : i + 8])
+                    i += step
                 }
             }
         }

g/util/grand/grand_test.go

@@ -9,12 +9,22 @@
 package grand_test
 
 import (
-    "testing"
     "gitee.com/johng/gf/g/util/grand"
+    "testing"
 )
 
+var buffer = make([]byte, 8)
+
 func Benchmark_Rand(b *testing.B) {
     for i := 0; i < b.N; i++ {
         grand.Rand(0, 999999999)
     }
 }
+
+//func Benchmark_Buffer(b *testing.B) {
+//    for i := 0; i < b.N; i++ {
+//        if _, err := rand.Read(buffer); err == nil {
+//            binary.LittleEndian.Uint64(buffer)
+//        }
+//    }
+//}

geg/other/test.go

@@ -1,10 +1,23 @@
 package main
 
 import (
-    "fmt"
-    "gitee.com/johng/gf/g/os/gtime"
+	"gitee.com/johng/gf/g"
+	"gitee.com/johng/gf/g/net/ghttp"
 )
 
 func main() {
-    fmt.Println(gtime.Now())
-}
+	s := g.Server()
+	s.BindHandler("/", func(r *ghttp.Request) {
+
+	})
+	s.BindHandler("/user", func(r *ghttp.Request) {
+
+	})
+	s.BindHandler("/user/:id", func(r *ghttp.Request) {
+		r.Response.Header().Set("Content-Type", "text/plain; charset=utf-8")
+		r.Response.Write(r.Get("id"))
+	})
+	s.SetFileServerEnabled(false)
+	s.SetPort(3000)
+	s.Run()
+}