Last change
on this file since 8d391a1 was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago |
initial commit
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Property mode
set to
100644
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File size:
812 bytes
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1 | const runningProcs = new Set()
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2 | let handlersInstalled = false
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3 |
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4 | const forwardedSignals = [
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5 | 'SIGINT',
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6 | 'SIGTERM'
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7 | ]
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8 |
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9 | const handleSignal = signal => {
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10 | for (const proc of runningProcs) {
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11 | proc.kill(signal)
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12 | }
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13 | }
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14 |
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15 | const setupListeners = () => {
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16 | for (const signal of forwardedSignals) {
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17 | process.on(signal, handleSignal)
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18 | }
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19 | handlersInstalled = true
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20 | }
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21 |
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22 | const cleanupListeners = () => {
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23 | if (runningProcs.size === 0) {
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24 | for (const signal of forwardedSignals) {
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25 | process.removeListener(signal, handleSignal)
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26 | }
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27 | handlersInstalled = false
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28 | }
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29 | }
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30 |
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31 | const add = proc => {
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32 | runningProcs.add(proc)
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33 | if (!handlersInstalled)
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34 | setupListeners()
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35 |
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36 | proc.once('exit', () => {
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37 | runningProcs.delete(proc)
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38 | cleanupListeners()
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39 | })
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40 | }
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41 |
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42 | module.exports = {
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43 | add,
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44 | handleSignal,
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45 | forwardedSignals
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46 | }
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