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4.14.4 Timers

Timers are a kind of operation that, you guessed it, let you sleep until a certain time. The timer API can be found in the (fibers timers) module.

Procedure: sleep-operation seconds ¶

Make an operation that will succeed with no values when seconds have elapsed.

Procedure: timer-operation expiry ¶

Make an operation that will succeed when the current time is greater than or equal to expiry, expressed in internal time units. The operation will succeed with no values.

Procedure: sleep seconds ¶

Block the calling fiber until seconds have elapsed.