Re: [fuse-devel] libfuse patch: add fuse_app_set_intr_sighandler

[Miklos S. <mi...@sz...>]

[fuse-devel CC-d]

On Wed, Feb 13, 2013 at 1:36 AM, Enke Chen <enk...@ya...> wrote:
> Hi, Miklos:
>
> Here is a patch that adds an API for customizing the intr sighandler.
>
> In our multi-threaded apps, several system calls such as read() / write()
> can be blocked on pthread_cond_wait().  In order to get the thread out of
> pthread_cond_wait() when an FUSE INTERRUPT arrives,  pthread_cond_signal()
> or pthread_cond_broadcast() would be required.  That is the reason for the
> new API.
>
> Hope the patch can be accepted.

You can install your own signal handler and do the pthread_cond_signal
from there, so modifying libfuse is not needed.  If you install a
signal handler for the configured interrupt signal (SIGUSR1 by
default) then fuse will not overwrite it with it's own (see
fuse_init_intr_signal() in lib/fuse.c).

Thanks,
Miklos