Block / unblock signals

static sigset_t osset;
void block_signals()
{
    sigset_t sset;
    sigemptyset(&sset);
    sigaddset(&sset, SIGABRT);
/*     sigprocmask(SIG_BLOCK, &sset, &osset); */
    pthread_sigmask(SIG_BLOCK, &sset, &osset);
    signal(SIGABRT, SIG_DFL);
}

void unblock_signals()
{
    sigset_t sset;
    sigpending(&sset);
    if (sigismember(&sset, SIGABRT))
    {
        fprintf(stderr, "\njg ==> was interrupted\n");
        exit(1);
    }
/*     sigprocmask(SIG_SETMASK, &osset, NULL); */
    pthread_sigmask(SIG_SETMASK, &osset, NULL);
}