Memory 葛朗:记忆有问题
我记忆力不好。我不明白为什么当我的程序运行很长时间时,Go会使用越来越多的内存(从未释放内存) 在第一次分配之后,程序使用了将近9MB的内存。12小时后,它开始以指数方式使用更多内存,直到800MBMemory 葛朗:记忆有问题,memory,memory-management,go,endpoint,Memory,Memory Management,Go,Endpoint,我记忆力不好。我不明白为什么当我的程序运行很长时间时,Go会使用越来越多的内存(从未释放内存) 在第一次分配之后,程序使用了将近9MB的内存。12小时后,它开始以指数方式使用更多内存,直到800MB //.....code..... if bol { // Assignment Struct.Var Struct_VastScript.TxtNoticeTop = JsonStruct_S.Options.TxtNoticeTop Struct_VastScript.Tx
//.....code.....
if bol {
// Assignment Struct.Var
Struct_VastScript.TxtNoticeTop = JsonStruct_S.Options.TxtNoticeTop
Struct_VastScript.TxtNoticeBottom = JsonStruct_S.Options.TxtNoticeBottom
Struct_VastScript.Loop = JsonStruct_S.Options.Loop
Struct_Image, err := getImage(Struct_VastScript.Video)
if err == nil {
if mobile == "true" {
Struct_VastScript.Image = Struct_Image.URL360
}
}
//open and parse a template file
fi = path.Join("templates/VastPlayer", "TempVastPlayer.txt")
tmpl, err := template.ParseFiles(fi)
if err != nil {
job_1.Complete(health.Panic)
return false, err
}
//substitute fields in the template 'tmpl', with values from 'XmlStruct_V' and write it out to 'buf'
var buf bytes.Buffer
if err := tmpl.Execute(&buf, Struct_VastScript); err != nil {
//if err := tmpl.Execute(w, XmlStruct_V); err != nil {
job_1.Complete(health.Panic)
return false, err
}
// Call Func randString() : return alphanum random
dir := randString(12)
fpath := "http://creative2.xxx.io/api/html/" + dir
// Create a new EndPoint to write the generated 'template' on 'w' http.ResponseWriter
routeHtml := "/api/html/" + dir
http.HandleFunc(routeHtml, http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
//writes Template to 'w' http.ResponseWriter
fmt.Fprintf(w, buf.String())
fmt.Println("successfull Operation 2 !!")
fmt.Println("")
job_2.Complete(health.Success)
}))
//Call Func JsonReply(): return the finale Json response
str := JsonReply(fpath, JsonStruct_S.Options.Animated, JsonStruct_S.Options.Responsive, JsonStruct_S.Options.Clickurl, JsonStruct_S.Options.Width, JsonStruct_S.Options.Height, adid, campaignid, JsonStruct_S.Type, JsonStruct_S.Options.Aspectratio, mobile)
w.Header().Set("Content-Type", "application/json")
//writes FinaleJson to 'w' http.ResponseWriter(it contains the link of the second endpoint "/api/html/")
fmt.Fprint(w, str)
fmt.Println("successfull Operation !!")
fmt.Println("")
job_1.Complete(health.Success)
return true, nil
} else {
return false, nil
}
对于每个调用,我的服务需要生成一个新模板,其中包含我收到的参数,正如您看到的,我为每个调用创建了一个新端点,我不知道这是否是一个好主意,我认为问题来自这部分代码,但我不确定,因为我不知道如何管理它。显然,您不应该每次出现请求时都创建处理程序。它们永远不会释放内存,因此最终会出现内存不足异常 相反,将处理程序端点放入数组(slice)中,并使用一个处理程序来响应请求,方法是在该切片中查找URL,然后将该项从切片中删除,这样就不再需要该项了 因此,基本上
routeHtml := "/api/html/" + dir
http.HandleFunc(routeHtml, http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
//writes Template to 'w' http.ResponseWriter
fmt.Fprintf(w, buf.String())
fmt.Println("successfull Operation 2 !!")
fmt.Println("")
job_2.Complete(health.Success)
}))
做
它将在以下方面发挥作用:
模式名称固定的根路径,如“/favicon.ico”,或根子树,如“/images/”(注意后面的斜杠)。较长的模式优先于较短的模式,因此,如果存在为“/images/”和“/images/thumbnails/”注册的处理程序,则将为“/images/thumbnails/”开头的路径调用后一个处理程序,并且前者将接收对“/images/”子树中任何其他路径的请求
当然,不要忘记清理数组
作业。不要使用切片最好使用映射
type JobInfo struct {
Path string
// some data here
}
// global context
var jobs map[string]JobInfo
// initialisation
jobs = make(map[string]JobInfoStruct)
http.HandleFunc("/api/html/", http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
path := r.URL.Path
var job JobInfoStruct
var ok bool
job, ok = jobs[path]
if ok {
// handle job request here
//then after delete the job
delete(jobs, path)
}
}))
// and then in the jobs' loop
pathVideo := "/api/html/" + dir
jobs[pathVideo] = JobInfoStruct{pathVideo, ...}
gracias说,它工作得非常好,代码清晰,但与其使用slice,不如使用map。
type JobInfo struct {
Path string
// some data here
}
// global context
var jobs map[string]JobInfo
// initialisation
jobs = make(map[string]JobInfoStruct)
http.HandleFunc("/api/html/", http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
path := r.URL.Path
var job JobInfoStruct
var ok bool
job, ok = jobs[path]
if ok {
// handle job request here
//then after delete the job
delete(jobs, path)
}
}))
// and then in the jobs' loop
pathVideo := "/api/html/" + dir
jobs[pathVideo] = JobInfoStruct{pathVideo, ...}