From d4c6a6059e830fd1de26a92adf3025fb3a32f6bc Mon Sep 17 00:00:00 2001
From: chenshijun <csj_sky@126.com>
Date: 星期一, 30 三月 2020 13:56:10 +0800
Subject: [PATCH] 添加注释
---
shmwrap.go | 34 ++++++++++++++++++++++++++--------
1 files changed, 26 insertions(+), 8 deletions(-)
diff --git a/shmwrap.go b/shmwrap.go
index 06ee17a..2f48b70 100644
--- a/shmwrap.go
+++ b/shmwrap.go
@@ -10,13 +10,14 @@
// NewBlock shm block with size
func NewBlock(size int, key int) ([]byte, int, error) {
id, err := shm.Get(key, size, shm.IPC_CREAT|0666)
- fmt.Println("Get:", id, err)
if err != nil || id == -1 {
+ fmt.Printf("NewBlock Get:%x, %v\n", key, err)
return nil, -1, err
}
data, err2 := shm.At(id, 0, 0)
if err2 != nil {
+ fmt.Printf("NewBlock At:%x, %v\n", key, err2)
return nil, -1, err2
}
@@ -26,13 +27,14 @@
// AttachBlock attach exist shm
func AttachBlock(key int) ([]byte, int, error) {
id, err := shm.Get(key, 0, 0)
- fmt.Println("Get:", id, err)
if err != nil || id == -1 { //no exist
+ fmt.Printf("AttachBlock Get:%x, %v\n", key, err)
return nil, -1, err
}
data, err2 := shm.At(id, 0, 0)
if err2 != nil {
+ fmt.Printf("AttachBlock Get:%x, %v\n", key, err2)
return nil, -1, err2
}
@@ -50,7 +52,6 @@
// context for quit
func CreateRawShm(ctx context.Context, size int, key int) ([]byte, int) {
data, id, err := AttachBlock(key)
- fmt.Println("err:", err)
if err != nil {
loopB:
for {
@@ -60,8 +61,6 @@
default:
if err == nil {
break loopB
- } else {
- fmt.Println("createShm error:", err)
}
time.Sleep(time.Millisecond)
data, id, err = NewBlock(size, key)
@@ -83,8 +82,6 @@
default:
if err == nil {
break loopB
- } else {
- fmt.Println("createShm error:", err)
}
time.Sleep(time.Millisecond)
data, id, err = AttachBlock(key)
@@ -140,7 +137,7 @@
return shm.Rm(id)
}
-// RemoveShmID Remove shmid
+// RemoveShmKey Remove shmkey
func RemoveShmKey(shmkey int) error {
_, id, err := AttachBlock(shmkey)
if err != nil {
@@ -149,3 +146,24 @@
return shm.Rm(id)
}
}
+
+// DetachShmKey detach shmkey
+func DetachShmKey(shmkey int) error {
+ d, _, err := AttachBlock(shmkey)
+ if err != nil {
+ return err
+ } else {
+ return Detach(d)
+ }
+}
+
+// DetachAndRemoveShmKey detach and Remove shmkey
+func DetachAndRemoveShmKey(shmkey int) error {
+ d, id, err := AttachBlock(shmkey)
+ if err != nil {
+ return err
+ } else {
+ Detach(d)
+ return shm.Rm(id)
+ }
+}
--
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