otk/timer.cc (raw)
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// -*- mode: C++; indent-tabs-mode: nil; c-basic-offset: 2; -*- #ifdef HAVE_CONFIG_H # include "../config.h" #endif // HAVE_CONFIG_H #include "timer.hh" #include "timerqueuemanager.hh" namespace otk { static timeval normalizeTimeval(const timeval &tm) { timeval ret = tm; while (ret.tv_usec < 0) { if (ret.tv_sec > 0) { --ret.tv_sec; ret.tv_usec += 1000000; } else { ret.tv_usec = 0; } } if (ret.tv_usec >= 1000000) { ret.tv_sec += ret.tv_usec / 1000000; ret.tv_usec %= 1000000; } if (ret.tv_sec < 0) ret.tv_sec = 0; return ret; } Timer::Timer(TimerQueueManager *m, TimeoutHandler h, TimeoutData d) { _manager = m; _handler = h; _data = d; _recur = _timing = false; } Timer::~Timer(void) { if (_timing) stop(); } void Timer::setTimeout(long t) { _timeout.tv_sec = t / 1000; _timeout.tv_usec = t % 1000; _timeout.tv_usec *= 1000; } void Timer::setTimeout(const timeval &t) { _timeout.tv_sec = t.tv_sec; _timeout.tv_usec = t.tv_usec; } void Timer::start(void) { gettimeofday(&_start, 0); if (! _timing) { _timing = true; _manager->addTimer(this); } } void Timer::stop(void) { if (_timing) { _timing = false; _manager->removeTimer(this); } } void Timer::fire(void) { if (_handler) _handler(_data); } timeval Timer::remainingTime(const timeval &tm) const { timeval ret = endTime(); ret.tv_sec -= tm.tv_sec; ret.tv_usec -= tm.tv_usec; return normalizeTimeval(ret); } timeval Timer::endTime(void) const { timeval ret; ret.tv_sec = _start.tv_sec + _timeout.tv_sec; ret.tv_usec = _start.tv_usec + _timeout.tv_usec; return normalizeTimeval(ret); } bool Timer::shouldFire(const timeval &tm) const { timeval end = endTime(); return ! ((tm.tv_sec < end.tv_sec) || (tm.tv_sec == end.tv_sec && tm.tv_usec < end.tv_usec)); } } |