70 lines
2.5 KiB
TypeScript
70 lines
2.5 KiB
TypeScript
/// SPDX-License-Identifier: GPL-3.0-or-later
|
|
/// SPDX-FileCopyrightText: Copyright © 2016-2021 Tony Garnock-Jones <tonyg@leastfixedpoint.com>
|
|
|
|
import { preserves, Observe, Dataspace, floatValue, Facet } from "@syndicate-lang/core";
|
|
|
|
export message type PeriodicTick(intervalMS);
|
|
export assertion type TimeLaterThan(deadlineMS);
|
|
|
|
export function sleep<T>(thisFacet: Facet<T>, ms: number, cb: () => void): void {
|
|
react {
|
|
stop on asserted TimeLaterThan(+(new Date()) + ms) {
|
|
cb();
|
|
}
|
|
}
|
|
}
|
|
|
|
boot {
|
|
spawn named 'timer/PeriodicTick' {
|
|
during Observe(PeriodicTick($intervalMS)) =>
|
|
spawn named (preserves`PeriodicTick(${intervalMS})`) {
|
|
let handle: any | null = null;
|
|
let finish: (() => void) | null = thisFacet.actor.dataspace.backgroundTask();
|
|
on start {
|
|
handle = setInterval(thisFacet.wrapExternal((thisFacet) => {
|
|
send message PeriodicTick(intervalMS);
|
|
}), floatValue(intervalMS as any));
|
|
}
|
|
on stop {
|
|
if (handle) {
|
|
clearInterval(handle);
|
|
handle = null;
|
|
}
|
|
if (finish) {
|
|
finish();
|
|
finish = null;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
spawn named 'timer/TimeLaterThan' {
|
|
during Observe(TimeLaterThan($deadlineMS)) =>
|
|
spawn named (preserves`TimeLaterThan(${deadlineMS})`) {
|
|
let handle: any | null = null;
|
|
let finish: (() => void) | null = thisFacet.actor.dataspace.backgroundTask();
|
|
on start {
|
|
let delta = floatValue(deadlineMS as any) - (+(new Date()));
|
|
handle = setTimeout(thisFacet.wrapExternal((thisFacet) => {
|
|
handle = null;
|
|
if (finish) finish();
|
|
finish = null;
|
|
react {
|
|
assert TimeLaterThan(deadlineMS);
|
|
}
|
|
}), delta);
|
|
}
|
|
on stop {
|
|
if (handle) {
|
|
clearTimeout(handle);
|
|
handle = null;
|
|
}
|
|
if (finish) {
|
|
finish();
|
|
finish = null;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|