From fb46ee747046ea8634638fba3384ac20358deb49 Mon Sep 17 00:00:00 2001
From: zhangmeng <775834166@qq.com>
Date: 星期一, 26 八月 2019 14:16:31 +0800
Subject: [PATCH] update shm
---
shm.go | 71 +++++++----------------------------
1 files changed, 15 insertions(+), 56 deletions(-)
diff --git a/shm.go b/shm.go
index f36dba2..0edb422 100644
--- a/shm.go
+++ b/shm.go
@@ -3,9 +3,7 @@
import (
"errors"
"fmt"
- // "io"
-
- "time"
+ "io"
"basic.com/valib/shm.git"
)
@@ -14,8 +12,6 @@
type SHM struct {
rw *shm.ReadWriteCloser
typ td
-
- data []byte
}
// Send impl interface Diliver
@@ -24,26 +20,12 @@
return errors.New("please init shm producer first")
}
- 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")
+ n, err := s.rw.Write(data)
+ if n < 1 {
+ fmt.Println("recv data less than 1 length")
}
- 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
+ return err
}
// Recv impl interface Diliver
@@ -53,33 +35,14 @@
return nil, errors.New("please open shm consumer first")
}
- 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")
+ 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, 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
+ return nil, err
}
// Close impl interface Deliver
@@ -110,21 +73,18 @@
return nil, errors.New("shmServer created recv error parameters")
}
}
-
- blocks, size := 2, maxRecvSize
- if len(param) == 2 {
- blocks, size = param[0], param[1]
- // return nil, errors.New("shmServer created recv too much parameters")
+ if len(param) != 2 {
+ return nil, errors.New("shmServer created recv too much parameters")
}
+
shm.Unlink(url)
- rw, err := shm.CreateSimplex(url, 0644, blocks, size)
+ rw, err := shm.CreateSimplex(url, 0644, param[0], param[1])
if err == nil {
fmt.Println(rw.Name())
return &SHM{
rw,
agent,
- make([]byte, maxRecvSize),
}, nil
}
@@ -141,7 +101,6 @@
return &SHM{
rw,
coactee,
- make([]byte, maxRecvSize),
}, nil
}
return nil, err
--
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