On Tue, Sep 5, 2017 at 10:03 PM, Jason Wang <silentr...@gmail.com> wrote:
>
> I have the following two files:
>
> // hello.go
> package main
>
> import (
> "fmt"
> )
>
> func Hello() {
> fmt.Println("hello")
> }
>
> func main() {}
>
>
> build as plugin: `go build -buildmode=plugin hello.go`
>
> // main.go
> package main
>
> import (
> "log"
> "plugin"
> "time"
> )
>
> func main() {
> for {
> log.Println("start load plugin.")
> time.Sleep(time.Second)
> p, err := plugin.Open("../hello.so")
> if err != nil {
> log.Println(err)
> continue
> }
>
> sym, err := p.Lookup("Hello")
> if err != nil {
> log.Println(err)
> continue
> }
>
> hello, ok := sym.(func())
> if !ok {
> log.Println(err)
> continue
> }
>
> for i := 0; i < 10; i++ {
> hello()
> time.Sleep(time.Second)
> }
> }
> }
>
> // `go build main.go`
>
>
> main.go keeps calling the Hello function from hello.so file. I tried to
> modify the hello.go file, and re-built the hello.so file. The so file was
> successfully replaced. However, the main process was still printing the old
> world "hello". It seems the so file in memory was not changed, even the main
> program reloaded the so file once for a while.
> Restarting the main process could make it work. But it is not what i am
> looking for.
>
> How could I dynamically update the so file and make it applied in main
> process?I don't think there is any way to do this at present. The closest you can come is to use a new name for plugin.Open. Doing so may help make more clear that there is no plugin.Close, so every time you open a new plugin you are taking up a bit more of the program's address space. Ian -- You received this message because you are subscribed to the Google Groups "golang-nuts" group. To unsubscribe from this group and stop receiving emails from it, send an email to golang-nuts+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
