uv_timer_t — Timer handle¶
Timer handles are used to schedule callbacks to be called in the future.
Timer handle type.
uv_timer_start(uv_timer_t *handle, uv_timer_cb cb, uint64_t timeout, uint64_t repeat)¶
Start the timer. timeout and repeat are in milliseconds.
If timeout is zero, the callback fires on the next event loop iteration. If repeat is non-zero, the callback fires first after timeout milliseconds and then repeatedly after repeat milliseconds.
Does not update the event loop’s concept of “now”. See
uv_update_time()for more information.
If the timer is already active, it is simply updated.
Stop the timer, and if it is repeating restart it using the repeat value as the timeout. If the timer has never been started before it returns UV_EINVAL.
uv_timer_set_repeat(uv_timer_t *handle, uint64_t repeat)¶
Set the repeat interval value in milliseconds. The timer will be scheduled to run on the given interval, regardless of the callback execution duration, and will follow normal timer semantics in the case of a time-slice overrun.
For example, if a 50ms repeating timer first runs for 17ms, it will be scheduled to run again 33ms later. If other tasks consume more than the 33ms following the first timer callback, then the callback will run as soon as possible.
If the repeat value is set from a timer callback it does not immediately take effect. If the timer was non-repeating before, it will have been stopped. If it was repeating, then the old repeat value will have been used to schedule the next timeout.
uv_timer_get_due_in(const uv_timer_t *handle)¶
Get the timer due value or 0 if it has expired. The time is relative to
New in version 1.40.0.
uv_handle_t API functions also apply.