Application exit prevention

Timers can (and will, by default) prevent application from exitting. This chapter demonstrates, how to control this behaviour.

Default behaviour

By default, all created timers have Ref, which means until the timer is destroyed, application cannot exit (AppDomain.ProcessExit event has an infinite loop inside, which will spin until the last timer with Ref has been destroyed)

Examples

using JsTimers;

static void Main() {
  Timeout interval = TimerManager.SetInterval(() => {/* noop */}, 1000);
  bool refed = interval.HasRef(); // true
  // Application keeps running, because the timer is never destroyed
}

static void Main() {
  Timeout timeout = TimerManager.SetTimeout(() => {}, 1000);
  // Application keeps running for 1 second, until timeout execution
}

static void Main() {
  Timeout interval = TimerManager.SetInterval(() => {}, 1000);
  interval.UnRef();
  bool refed = interval.HasRef(); // false
  // Application exits, interval's callback never fires
}

HasRef()

Syntax

bool Timer.HasRef()

Description

Indicates, whether the timer has an active Ref to it

Ref()

Syntax

void Timer.Ref()

Description

Enables Ref on timer

UnRef()

Syntax

void Timer.UnRef()

Description

Disables timer's Ref