Exemplo n.º 1
0
/**
 *断言
 */
void
nc_assert(const char *cond, const char *file, int line, int panic)
{
    log_error("assert '%s' failed @ (%s, %d)", cond, file, line);
    if (panic) {
        nc_stacktrace(1);
        abort();
    }
}
Exemplo n.º 2
0
void
signal_handler(int signo)
{
    struct signal *sig;
    void (*action)(void);
    char *actionstr;
    bool done;

    for (sig = signals; sig->signo != 0; sig++) {
        if (sig->signo == signo) {
            break;
        }
    }
    ASSERT(sig->signo != 0);

    actionstr = "";
    action = NULL;
    done = false;

    switch (signo) {
    case SIGUSR1:
        break;

    case SIGUSR2:
        break;

    case SIGTTIN:
        actionstr = ", up logging level";
        action = log_level_up;
        break;

    case SIGTTOU:
        actionstr = ", down logging level";
        action = log_level_down;
        break;

    // using svc -h to close program is our convention, so we take it as SIGINT
    //case SIGHUP:
        //actionstr = ", reopening log file";
        //action = log_reopen;
        //break;

    case SIGHUP:
    case SIGINT:
        done = true;
        actionstr = ", exiting";
        break;

    case SIGSEGV:
        nc_stacktrace(1);
        actionstr = ", core dumping";
        raise(SIGSEGV);
        break;

    default:
        NOT_REACHED();
    }

    loga("signal %d (%s) received%s", signo, sig->signame, actionstr);

    if (action != NULL) {
        action();
    }

    if (done) {
        exit(1);
    }
}