Ok, thank you! Does that mean that writing plugins, e.g. for SQLite, can cause issues when multiple Go extensions are loaded in the same process? Or is this use-case actually safe, and issues can start to happen only when there's a Go host and a Go c-shared library in the same process?
On Thursday, 4 August 2022 at 21:55:45 UTC+3 Ian Lance Taylor wrote: > On Thu, Aug 4, 2022 at 11:45 AM Nikita Rirush <raccoo...@gmail.com> wrote: > > > > I recently stumbled onto a project that implements an SQLite extension > in Go as a c-shared library, and wondered if Go shares its runtime between > multiple c-shared Go libraries in the same process. > > > > I tried searching for issues on Github and through this group, but I > wasn't able to find any concrete information on how this works. I found > this issue (https://github.com/golang/go/issues/18976) that states that > multiple Go runtimes are not supported, but I made a simple library, built > it as c-shared, and linked it to a Go program, and it worked just fine, so > this is probably not the case anymore. > > > > This conversation ( > https://groups.google.com/g/golang-nuts/c/fin6OT3KCOU/m/ub3aWquAAAAJ) > seems to hint that runtimes may be shared, but it's not 100% clear if > that's the case. > > > > So the question is, is linking multiple Go libraries in the same process > and c-shared Go libraries into Go programs now supported? > > No, it is not. > > > Do those libraries (and optionally a host program) share runtimes, or do > they each start separate runtimes that somehow cooperate? > > Separate runtimes can in some cases live entirely independently, in > which case they don't cooperate. That can be fine as long as you > don't try to call functions between them, as they just allocate memory > as needed. Exactly what is happening in your case is highly platform > specific, and not really guaranteed to continue working. > > 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. To view this discussion on the web visit https://groups.google.com/d/msgid/golang-nuts/9af821a4-401c-4fe4-b0b1-e3c234f0ee6cn%40googlegroups.com.
