From be392a6596e481d82032d85060d1a072d327e3f4 Mon Sep 17 00:00:00 2001
From: 554325746@qq.com <554325746@qq.com>
Date: 星期四, 22 八月 2019 15:30:35 +0800
Subject: [PATCH] test shm
---
shm.go | 108 +++++++++++++++++++++++++++++++++++++-----------------
1 files changed, 74 insertions(+), 34 deletions(-)
diff --git a/shm.go b/shm.go
index 16bc8f1..ba48253 100644
--- a/shm.go
+++ b/shm.go
@@ -3,7 +3,9 @@
import (
"errors"
"fmt"
- "io"
+ // "io"
+
+ "time"
"github.com/tmthrgd/shm-go"
)
@@ -12,41 +14,79 @@
type SHM struct {
rw *shm.ReadWriteCloser
typ td
+
+ data []byte
}
// Send impl interface Diliver
func (s *SHM) Send(data []byte) error {
- if s.rw == nil {
+ if s == nil || s.rw == nil {
return errors.New("please init shm producer first")
}
- n, err := s.rw.Write(data)
- if n < 1 {
- fmt.Println("recv data less than 1 length")
+ ch := make(chan int)
+ go func(){
+ n, _ := s.rw.Write(data)
+ ch <- n
+ }()
+ select{
+ case <-ch:
+ return nil
+ case <- time.After(3 * time.Second):
+ return errors.New("send time out")
}
- return err
+ return errors.New("send should't here")
+
+ // n, err := s.rw.Write(data)
+ // if n < 1 {
+ // fmt.Println("recv data less than 1 length")
+ // }
+
+ // return err
}
// Recv impl interface Diliver
func (s *SHM) Recv() ([]byte, error) {
- if s.rw == nil {
+ if s == nil || s.rw == nil {
return nil, errors.New("please open shm consumer first")
}
- data := make([]byte, maxRecvSize)
- n, err := s.rw.Read(data)
- if err == nil || err == io.EOF {
- data = data[:n:n]
- return data, nil
+ ch := make(chan int)
+ go func(){
+ n, _ := s.rw.Read(s.data)
+ ch <- n
+ }()
+ select{
+ case d := <-ch:
+ if d > 0{
+ data := make([]byte, d)
+ copy(data, s.data)
+ return data, nil
+ }
+ case <- time.After(3 * time.Second):
+ return nil, errors.New("recv time out")
}
- return nil, err
+ return nil, errors.New("recv should't here")
+
+
+ // data := make([]byte, maxRecvSize)
+ // n, err := s.rw.Read(data)
+ // if err == nil || err == io.EOF {
+ // data = data[:n:n]
+ // return data, nil
+ // }
+
+ // return nil, err
}
// Close impl interface Deliver
func (s *SHM) Close() {
+ if s == nil {
+ return
+ }
if s.rw != nil {
s.rw.Close()
}
@@ -55,54 +95,54 @@
}
}
-func shmServer(m Mode, url string, args ...interface{}) *SHM {
+func shmServer(m Mode, url string, args ...interface{}) (*SHM, error) {
if m != Shm {
- fmt.Println("this is not a shm mode: ", m)
- return nil
+ return nil, errors.New("please use deliver.Shm mode")
}
var param []int
for _, v := range args {
- fmt.Println(v)
switch v.(type) {
case int:
param = append(param, v.(int))
default:
- fmt.Println("shmProducer recv error parameters")
- return nil
+ return nil, errors.New("shmServer created recv error parameters")
}
}
- if len(param) != 2 {
- fmt.Println("shmProducer recv too much parameter: ", len(param))
- return nil
+
+ blocks, size := 2, maxRecvSize
+ if len(param) == 2 {
+ blocks, size = param[0], param[1]
+ // return nil, errors.New("shmServer created recv too much parameters")
}
shm.Unlink(url)
- if rw, err := shm.CreateSimplex(url, 0644, param[0], param[1]); err == nil {
+
+ rw, err := shm.CreateSimplex(url, 0644, blocks, size)
+ if err == nil {
fmt.Println(rw.Name())
return &SHM{
rw,
agent,
- }
+ make([]byte, maxRecvSize),
+ }, nil
}
- fmt.Println("create simple shm error")
- return nil
+ return nil, err
}
-func shmClient(m Mode, url string, args ...interface{}) *SHM {
-
+func shmClient(m Mode, url string, args ...interface{}) (*SHM, error) {
if m != Shm {
- fmt.Println("this is not a shm mode: ", m)
- return nil
+ return nil, errors.New("please use deliver.Shm mode")
}
- if rw, err := shm.OpenSimplex(url); err == nil {
+ rw, err := shm.OpenSimplex(url)
+ if err == nil {
return &SHM{
rw,
coactee,
- }
+ make([]byte, maxRecvSize),
+ }, nil
}
- fmt.Println("shmConsumer open error")
- return nil
+ return nil, err
}
--
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