From 309302ff1743e28052a40a640b05b15ec3f58ebd Mon Sep 17 00:00:00 2001
From: chenshijun <csj_sky@126.com>
Date: 星期五, 22 五月 2020 17:47:59 +0800
Subject: [PATCH] attach 或 create shmqueue的时候增加错误判断
---
shmqueue.go | 17 +++++++++++------
1 files changed, 11 insertions(+), 6 deletions(-)
diff --git a/shmqueue.go b/shmqueue.go
index 489c38e..b116869 100644
--- a/shmqueue.go
+++ b/shmqueue.go
@@ -12,7 +12,7 @@
)
const (
- TimePeriodPutOrGet = time.Duration(1) * time.Microsecond
+ TimePeriodPutOrGet = time.Duration(5)*time.Millisecond //ms
)
//Element info
@@ -72,6 +72,9 @@
shmLen = shmblocks*uint32(unsafe.Sizeof(datainfo)) + uint32(unsafe.Sizeof(shmstruct))
data, shmid := CreateRawShm(ctx, int(shmLen), key)
+ if shmid == -1 {
+ return nil
+ }
q := bytes2shmEsQueue(data)
//init parameters
q.capacity = shmblocks
@@ -104,6 +107,9 @@
var eqi EsQueueInfo
data, shmid := AttachRawShm(ctx, key)
+ if shmid == -1 {
+ return nil
+ }
shmdata := bytes2shmEsQueue(data)
eqi.EsCaches = ptr2esCache(unsafe.Pointer(&shmdata.cache), int(shmdata.capacity))
//fmt.Println("AttachQueue EsCaches:", eqi.EsCaches)
@@ -146,14 +152,14 @@
func (eqi *EsQueueInfo) QueueSize() int {
var putPos, getPos uint32
var quantity uint32
+
getPos = atomic.LoadUint32(&eqi.Queue.getPos)
putPos = atomic.LoadUint32(&eqi.Queue.putPos)
if putPos >= getPos {
quantity = putPos - getPos
} else {
- //quantity = q.capMod + (putPos - getPos)
- quantity = (eqi.Queue.capMod + (putPos - getPos)) % eqi.Queue.capMod
+ quantity = eqi.Queue.capMod + (putPos - getPos)
}
return int(quantity)
@@ -185,8 +191,7 @@
if putPos >= getPos {
posCnt = putPos - getPos
} else {
- //posCnt = capMod + (putPos - getPos)
- posCnt = (capMod + (putPos - getPos)) % capMod
+ posCnt = capMod + (putPos - getPos)
}
//todo
@@ -301,7 +306,7 @@
putNo := atomic.LoadUint32(&cache.putNo)
if getPosNew == getNo && getNo == putNo-eqi.Queue.capacity {
val := cache.value
- cache.value = ElemInfo{PicId: 0}
+ cache.value = ElemInfo{PicId: 0, InfoId:0}
atomic.AddUint32(&cache.getNo, eqi.Queue.capacity)
return val, true, int(posCnt - 1)
} else {
--
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