> ------------------------------------------------------------
> revno: 2852.1.15
> revision-id: davi.arnaut@sun.com-20090409152525-b4vnj9atidmjh0mf
> parent: luis.soares@sun.com-20090409113044-2072kufy5efeohpp
> committer: Davi Arnaut <Davi.Arnaut@Sun.COM>
> branch nick: 43706-5.1
> timestamp: Thu 2009-04-09 12:25:25 -0300
> message:
>   Bug#43706: libmysqld segfaults when re-intialised
>   Bug#44091: libmysqld gets stuck waiting on mutex on initialization
>   
>   The problem was that libmysqld wasn't enforcing a certain
>   initialization and deinitialization order for the mysys
>   library. Another problem was that the global object used
>   for management of log event handlers (aka LOGGER) wasn't
>   being prepared for a possible reutilization.
>   
>   What leads to the hang/crash reported is that a failure
>   to load the language file triggers a double call of the
>   cleanup functions, causing an already destroyed mutex to
>   be used.
>   
>   The solution is enforce a order on the initialization and
>   deinitialization of the mysys library within the libmysqld
>   library and to ensure that the global LOGGER object reset
>   it's internal state during cleanup.