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Re: [Help-gnutls] multiple "gnutlses" in single binary
From: |
Nikos Mavrogiannopoulos |
Subject: |
Re: [Help-gnutls] multiple "gnutlses" in single binary |
Date: |
Fri, 20 Jun 2008 18:54:45 +0300 |
User-agent: |
Thunderbird 2.0.0.14 (X11/20080505) |
Arkadiusz Miskiewicz wrote:
> Hello,
>
> Take a look at this example.
>
> There is one program (let be it php interpreter) that is able to load
> external
> modules (so modules).
> Now we have two external modules - curl and postgresql [1]. Assume both curl
> and postgresql use external libraries (libcurl and libpq) that internally
> also use gnutls.
> Both these libraries initialize and deinitialize gnutls on it's own.
> Separately they work fine.
> Now it php loads them both at the same time then gnutls initialization
> happens
> twice (once called by curl module and second time by postgres module) and the
> same happens for deinitialization. In openssl for example double deinit
> causes segfault and is now allowed (a real problem with php + modules btw).
> How things look in gnutls? I assume init/deinit also can't be called multiple
> times safely, right?
No there is no problem as long as they are called in a thread safe way.
regards,
Nikos