43 lines
3.1 KiB
JavaScript
43 lines
3.1 KiB
JavaScript
/* MAIN */
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// Registering a single interval scales much better than registering N timeouts
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// Timeouts are respected within the interval margin
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const WatcherLocksResolver = {
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/* VARIABLES */
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interval: 100,
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intervalId: undefined,
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fns: new Map(),
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/* LIFECYCLE API */
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init: () => {
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if (WatcherLocksResolver.intervalId)
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return;
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WatcherLocksResolver.intervalId = setInterval(WatcherLocksResolver.resolve, WatcherLocksResolver.interval);
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},
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reset: () => {
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if (!WatcherLocksResolver.intervalId)
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return;
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clearInterval(WatcherLocksResolver.intervalId);
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delete WatcherLocksResolver.intervalId;
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},
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/* API */
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add: (fn, timeout) => {
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WatcherLocksResolver.fns.set(fn, Date.now() + timeout);
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WatcherLocksResolver.init();
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},
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remove: (fn) => {
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WatcherLocksResolver.fns.delete(fn);
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},
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resolve: () => {
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if (!WatcherLocksResolver.fns.size)
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return WatcherLocksResolver.reset();
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const now = Date.now();
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for (const [fn, timestamp] of WatcherLocksResolver.fns) {
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if (timestamp >= now)
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continue; // We should still wait some more for this
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WatcherLocksResolver.remove(fn);
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fn();
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}
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}
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};
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/* EXPORT */
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export default WatcherLocksResolver;
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