64 /// Calls setitimer(2) with exception-based error reporting.
81     if (::setitimer(ITIMER_REAL, &timeval, old_timeval) == -1) {  in safe_setitimer()
103     /// sequentially to find either expired or expiring-now timers.
124         timers_set& timers = _all_timers[timer->when()];  in add_to_all_timers()
141             timer->when());  in remove_from_all_timers()
209         PRE(!(*iter).second.empty());  in reprogram_system_timer()
218             PRE(!(*iter).second.empty());  in reprogram_system_timer()
224             const datetime::delta delta = next - now;  in reprogram_system_timer()
232     /// Programs the first timer.
243         _timer_activation(timer->when())  in global_state()
245         PRE(now < timer->when());  in global_state()
249         const datetime::delta delta = timer->when() - now;  in global_state()
251            timer->when() % now);  in global_state()
257             _timer_activation = timer->when();  in global_state()
274         if (::setitimer(ITIMER_REAL, &_old_timeval, NULL) == -1) {  in ~global_state()
278         _sigalrm_programmer->unprogram();  in ~global_state()
282     /// Programs a new timer, possibly adjusting the global system timer.
315         LD(F("Unprogramming timer; previously firing on %s") % timer->when());  in unprogram()
359     PRE(signo == SIGALRM);  in sigalrm_handler()
360     globals->fire(datetime::timestamp::now());  in sigalrm_handler()
373     timer->do_fired();  in invoke_do_fired()
379 /// We assume that there is a 1-1 mapping between timer objects and impl
414 /// Constructor; programs a run-once timer.
416 /// This programs the global timer and signal handler if this is the first timer
430         globals->program_new(this, now);  in timer()
444     if (_pimpl->programmed) {  in ~timer()
445         LW("Auto-destroying still-programmed signals::timer object");  in ~timer()
453     if (!_pimpl->fired) {  in ~timer()
455         if (now > _pimpl->when) {  in ~timer()
469     return _pimpl->when;  in when()
480     PRE(!_pimpl->fired);  in do_fired()
481     _pimpl->fired = true;  in do_fired()
486 /// User-provided callback to run when the timer expires.
506     return _pimpl->fired;  in fired()
512 /// \pre The timer is programmed (i.e. this can only be called once).
523     if (!_pimpl->programmed) {  in unprogram()
527         LD("Called unprogram on already-unprogrammed timer; possibly just "  in unprogram()
532     if (!globals->unprogram(this)) {  in unprogram()
535     _pimpl->programmed = false;  in unprogram()
539     if (!_pimpl->fired) {  in unprogram()
541         if (now > _pimpl->when) {  in unprogram()
543                _pimpl->when);  in unprogram()