Edward Betts
ea4980a5d7
Adjust European short trip heuristic from >3 days to >1 day to correctly detect when user has returned home from European trips. This fixes the April 29-30, 2023 case where the location incorrectly showed "Sankt Georg, Hamburg" instead of "Bristol" when the user was free (no events scheduled) after the foss-north trip ended on April 27. The previous logic required more than 3 days to pass before assuming return home from European countries, but for short European trips by rail/ferry, users typically return within 1-2 days. 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <noreply@anthropic.com>
55 lines
1 KiB
JavaScript
55 lines
1 KiB
JavaScript
/*
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MIT License http://www.opensource.org/licenses/mit-license.php
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Author Tobias Koppers @sokra
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*/
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"use strict";
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class Semaphore {
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/**
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* Creates an instance of Semaphore.
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*
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* @param {number} available the amount available number of "tasks"
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* in the Semaphore
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*/
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constructor(available) {
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this.available = available;
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/** @type {(function(): void)[]} */
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this.waiters = [];
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/** @private */
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this._continue = this._continue.bind(this);
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}
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/**
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* @param {function(): void} callback function block to capture and run
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* @returns {void}
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*/
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acquire(callback) {
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if (this.available > 0) {
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this.available--;
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callback();
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} else {
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this.waiters.push(callback);
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}
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}
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release() {
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this.available++;
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if (this.waiters.length > 0) {
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process.nextTick(this._continue);
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}
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}
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_continue() {
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if (this.available > 0) {
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if (this.waiters.length > 0) {
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this.available--;
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const callback = /** @type {(function(): void)} */ (this.waiters.pop());
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callback();
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}
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}
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}
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}
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module.exports = Semaphore;
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