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From: Tomek Walkuski <tomek.walkuski@gmail.com>
Newsgroups: comp.lang.ada
Subject: Re: Ada and MySQL (mysql_library_init)
Date: Sun, 6 Dec 2009 05:06:35 -0800 (PST)
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Date: 2009-12-06T05:06:35-08:00
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On 6 Gru, 00:03, Maciej Sobczak <see.my.homep...@gmail.com> wrote:
> According to MySQL docs, you do not have to call this function,
> because mysql_init does it implicitly - you have to just ensure that
> you do not call it from multiple threads, which seems straightforward
> as it is an initialization function.
>
MySQL docs say:

"In a nonmulti-threaded environment, the call to mysql_library_init()
may be omitted, because mysql_init()  will invoke it automatically as
necessary. However, mysql_library_init() is not thread-safe in a multi-
threaded environment, and thus neither is mysql_init(), which calls
mysql_library_init(). You must either call mysql_library_init()  prior
to spawning any threads, or else use a mutex to protect the call,
whether you invoke mysql_library_init() or indirectly via mysql_init
(). This should be done prior to any other client library call."

So in multi-threaded environment mysql_library_init CANNOT be ommited.

And how about mysql_library_end() ? I could not import it to Ada and
this function performs some memory clean up after disconnection.