Re: Are NIF resources meant to be destroyed immediately on GC?
Sean Hinde <[email protected]>
| Newsgroups | gmane.comp.lang.erlang.general |
|---|---|
| Message-ID | <[email protected]> |
> On 23 Nov 2020, at 23:16, Sverker Eriksson <[email protected]> wrote: > > Prior to OTP 22.0 resource destructors were called directly by the thread that happened to decrease the reference counter down to zero. > From OTP 22.0 resource destructors are scheduled. This in order to ensure a stable known execution context for the destructor callback. So it may not have executed when erlang:garbage_collect returns, but will very soon (unless you have a very overloaded system or a bug preventing ref counter from reaching zero). > > /Sverker, Erlang/OTP > This a really nice change. It opens the door to resource destructors being safe for closing external resources like database handles that might take a while. Super cool! Sean