*
**************************************************************************/
-#include "../config.h"
+#include "config.h"
#include <cerrno>
#include <ctime>
namespace moof {
-scalar timer::next_expiration_ = std::numeric_limits<scalar>::max();
-hash<unsigned,timer*,hash_function> timer::timers_;
-
-
-unsigned timer::new_identifier()
-{
- static unsigned id = 1;
- return id++;
-}
-
-
-void timer::init(const function& function, scalar seconds, mode mode)
+void timer::init(const function& function,
+ scalar seconds,
+ mode mode,
+ runloop* runloop)
{
invalidate();
+ ASSERT(runloop && "can't schedule timer without a runloop");
- mode_ = mode;
-
- if (mode_ != invalid)
+ if ((mode_ = mode) != invalid)
{
function_ = function;
interval_ = seconds;
}
- id_ = new_identifier();
- timers_.insert(std::pair<unsigned,timer*>(id_, this));
-
- if (absolute_ < next_expiration_) next_expiration_ = absolute_;
+ runloop->add_timer(this);
+ runloop_ = runloop;
}
}
-bool timer::is_valid() const
-{
- return mode_ != invalid;
-}
-
void timer::invalidate()
{
if (mode_ != invalid)
{
- timers_.erase(id_);
mode_ = invalid;
+ absolute_ = SCALAR(0.0);
- if (is_equal(absolute_, next_expiration_))
- {
- next_expiration_ = find_next_expiration();
- }
+ runloop_->remove_timer(this);
+ runloop_ = 0;
}
}
-void timer::fire()
+void timer::fire(scalar t)
{
- scalar t = ticks();
-
if (function_) function_(*this, t);
if (is_repeating())
{
- scalar absolute = absolute_;
-
if (is_equal(absolute_, t, 1.0)) absolute_ += interval_;
else absolute_ = interval_ + t;
-
- if (is_equal(absolute, next_expiration_))
- {
- next_expiration_ = find_next_expiration();
- }
- }
- else
- {
- invalidate();
}
+ else invalidate();
}
-scalar timer::find_next_expiration()
-{
- scalar next_fire = std::numeric_limits<scalar>::max();
-
- hash<unsigned,timer*,hash_function>::iterator it;
- for (it = timers_.begin(); it != timers_.end(); ++it)
- {
- scalar absolute = (*it).second->absolute_;
- if (absolute < next_fire) next_fire = absolute;
- }
-
- return next_fire;
-}
-
-
-scalar timer::seconds_remaining() const
-{
- return absolute_ - ticks();
-}
-
-bool timer::is_expired() const
-{
- return seconds_remaining() < 0.0;
-}
-
-bool timer::is_repeating() const
-{
- return mode_ == repeat;
-}
-
-
-void timer::fire_expired_timers()
-{
- fire_expired_timers(ticks());
-}
-
-void timer::fire_expired_timers(scalar t)
-{
- if (next_expiration_ > t) return;
-
- hash<unsigned,timer*,hash_function>::iterator it;
- for (it = timers_.begin(); it != timers_.end(); ++it)
- {
- timer* timer = (*it).second;
- if (timer->is_expired()) timer->fire();
- }
-}
-
-
-#if HAVE_CLOCK_GETTIME
+#if ENABLE_CLOCK_GETTIME
// Since the monotonic clock will provide us with the time since the
// computer started, the number of seconds since that time could easily
ASSERT(result == 0 && "cannot access clock");
return scalar(ts.tv_sec - reference_) +
- scalar(ts.tv_nsec) / 1000000000.0;
+ scalar(ts.tv_nsec) * SCALAR(0.000000001);
}
void timer::sleep(scalar seconds, mode mode)
{
- struct timespec ts;
- int ret;
-
if (mode == absolute) seconds -= ticks();
- ts.tv_sec = time_t(seconds);
- ts.tv_nsec = long((seconds - scalar(ts.tv_sec)) * 1000000000.0);
+ if (seconds < SCALAR(0.0)) return;
- do
- {
- ret = nanosleep(&ts, &ts);
- }
- while (ret == -1 && errno == EINTR);
+ struct timespec ts;
+ ts.tv_sec = seconds;
+ ts.tv_nsec = (seconds - scalar(ts.tv_sec)) * SCALAR(1000000000.0);
+
+ int ret;
+ do ret = nanosleep(&ts, &ts); while (ret == -1 && errno == EINTR);
}
-#else // ! HAVE_CLOCK_GETTIME
+#else // ! ENABLE_CLOCK_GETTIME
// If we don't have posix timers, we'll have to use a different timing
// method. SDL only promises centisecond accuracy, but that's better than
-// a kick in the pants.
+// a kick in the pants. It could end up being just as good anyway.
scalar timer::ticks()
{
- Uint32 ms = SDL_GetTicks();
- return scalar(ms / 1000) + scalar(ms % 1000) / 1000.0;
+ return scalar(SDL_GetTicks()) * SCALAR(0.001);
}
void timer::sleep(scalar seconds, mode mode)
{
if (mode == absolute) seconds -= ticks();
- SDL_Delay(Uint32(clamp(int(seconds * 1000.0), 0, 1000)));
+ if (seconds < SCALAR(0.0)) return;
+ SDL_Delay(seconds * SCALAR(1000.0));
}
-#endif // HAVE_CLOCK_GETTIME
+#endif // ENABLE_CLOCK_GETTIME
} // namespace moof