22 lines
437 B
JavaScript
22 lines
437 B
JavaScript
function createMutex(doWork) {
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const mutex = {}
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return function (key, payload, callback) {
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if (mutex[key]) {
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mutex[key].push(callback)
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} else {
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mutex[key] = [ function () {
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delete mutex[key]
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}, callback ]
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doWork(payload, function (error, value) {
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mutex[key].forEach(function (callback) {
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callback(error, value)
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})
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})
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}
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}
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}
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module.exports = createMutex
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