From: | Mikhail Terekhov <terekhov(at)emc(dot)com> |
---|---|
To: | pgsql-interfaces(at)postgresql(dot)org |
Subject: | Re: Can a windows DLL have more than one process attached? |
Date: | 2001-11-29 00:53:08 |
Message-ID: | 3C0586F4.2070703@emc.com |
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Thread: | |
Lists: | pgsql-interfaces |
> where netmsgModule is
>
> static HINSTANCE netmsgModule = NULL;
>
That is definitely my bug (cut&paste problem:(). There shouldn't be a
static variable in *.h files. Sorry :(.
> This sure looks to me like it will fail miserably if more than one
> process can attach to the DLL concurrently: won't the first one to
> detach release the netmsg library, breaking access to it for all the
> remaining processes?
>
There is no problem here - LoadLibrary and FreeLibrary use reference
count (see references in the Ross's message).
> I don't know enough about Windows to know if there's really a problem
> here, but the code looks fishy to me. I'd expect to need a reference
> count. Comments anyone?
>
Windows really does reference count here.
Regards,
Mikhail
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