Re: [fuse-devel] Can I start fuse filesystem in a separate thread?

[xiangyong o. <ou...@cs...>]

Michael and Nikolaus,  thanks a ton for your comments!


-Ouyang


On Tue, Oct 12, 2010 at 4:18 PM, Michael Raskin <fb0...@ra...> wrote:
> On 10/12/2010 11:19 PM, xiangyong ouyang wrote:
>> Program A does a fork(), then:
>>
>> parent-proc                    child-proc
>> --------------                     --------------
>>                                      call fuse_main()
>>
>> access fuse-Filesystem
>>
>> call "fusermount -u"
>>
>> It seems it's able to work properly.
>> However, pthread_create() doesn't do the job as fork().  What's the
>> internal  difference caused by the two approaches?  Thanks!
>
> fork() : create a new process (for example, memory stops being shared no
> later than on the first write to it)
> pthread_create() : create a new thread (shared resources)
>
> fuse_main seems to think that it can safely take over all the process
> and the sole purpose of the process is to serve one filesystem. With
> fork(), parent is safe with another PID. With pthread_create(), parent
> thread may be even terminated by fuse_main (currently this doesn't
> happen) - there are no guarantees.
>