Re: [Evolution] Evo 0.10 hangs with IMAP servers

[Dan Winship <danw ximian com>]

> #3  0x403087ba in __pthread_mutex_lock (mutex=0x8143ba8) at mutex.c:84
> #4  0x400505d4 in folder_finalize (folder=0x817e888, event_data=0x0, 
>     user_data=0x81436f0) at camel-store.c:181
> #5  0x400491b6 in camel_object_unref (obj=0x817e888) at
> camel-object.c:501
> #6  0x40a4ac2b in camel_imap_command (store=0x81436f0, folder=0x817e798,
>     ex=0x0, fmt=0x40a52f69 "NOOP") at camel-imap-command.c:91

So, two issues. First, camel_imap_command is probably mistakenly
unreffing a folder. I fixed some refcounting issues with
imap_store->current_folder post-0.10, so that may be fixed already (in
CVS).

Second, folder_finalize is deadlocking because it's trying to get the
CamelStore cache_lock from a call chain that already has it (from
store_sync). So either store_sync needs to change its locking behavior
or cache_lock needs to be recursive. (Opinions on that?)

-- Dan