[Fwd: Re: [sane-devel] Problem with Plustek and Canonscan 1220u on Mac 10.3.2]

[Mattias Ellert]

Gerhard Jaeger wrote:
> Hi Mattias,
>  
> 
> Of course you are right. I'm really not sure how to proceed. I think I need
> some time to think about that stuff...
> 
> Ciao,
>   Gerhard
> 

Something like this, maybe....

        Mattias



void sanei_thread_allow_cancel () {

#ifdef USE_PTHREAD
#if defined (__APPLE__) && defined (__MACH__)
        sigset_t sigset;
        sigemptyset ( &sigset );
        sigaddset   ( &sigset, SIGUSR2 );
        sigprocmask ( SIG_UNBLOCK, &sigset, 0 );
#else
        int old;
        pthread_setcancelstate ( PTHREAD_CANCEL_ENABLE, &old );
#endif
#else
        sigset_t sigset;
        sigemptyset ( &sigset );
        sigaddset   ( &sigset, SIGTERM );
        sigprocmask ( SIG_UNBLOCK, &sigset, 0 );
#endif
}


void sanei_thread_disallow_cancel () {

#ifdef USE_PTHREAD
#if defined (__APPLE__) && defined (__MACH__)
        sigset_t sigset;
        sigemptyset ( &sigset );
        sigaddset   ( &sigset, SIGUSR2 );
        sigprocmask ( SIG_BLOCK, &sigset, 0 );
#else
        int old;
        pthread_setcancelstate ( PTHREAD_CANCEL_DISABLE, &old );
#endif
#else
        sigset_t sigset;
        sigemptyset ( &sigset );
        sigaddset   ( &sigset, SIGTERM );
        sigprocmask ( SIG_BLOCK, &sigset, 0 );
#endif
}