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1.0.2 • Public • Published


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Use childprocess module freely while limiting the amount of concurrent processes


  • Limit how many processes are running at the same time. Additional processes will be queued.
  • Supports fork, spawn, exec, execFile with the usual signature, with exception of returning an id and not a ChildProcess.
  • Add an onCreate callback to the options that you pass, to get a notification when the process was created. One argument will be passed back, containing the ChildProcess instance.
  • Call newQueue to receive a separate queue that you can use like the main ChildProcessQueue object.
  • Call setMaxProcesses to set the maximum concurrent processes.
  • Call getMaxProcesses to get the maximum concurrent processes (defaults to 5).
  • Call getCurrentProcessCount to get the number of currently running processes.
  • Call getCurrentProcesses to get an array of the currently running processes.
  • Call getCurrentQueueSize to get the number of processes waiting in the queue.
  • Call removeFromQueue with an id to remove a pending process from the queue.


npm install --save childprocess-queue


If you have anything to contribute, or functionality that you lack - you are more than welcome to participate in this! If anyone wishes to contribute unit tests - that also would be great :-)


  • Hi! I am Daniel Cohen Gindi. Or in short- Daniel.
  • is my email address.
  • That's all you need to know.


If you want to buy me a beer, you are very welcome to Donate Thanks :-)


All the code here is under MIT license. Which means you could do virtually anything with the code. I will appreciate it very much if you keep an attribution where appropriate.

The MIT License (MIT)

Copyright (c) 2013 Daniel Cohen Gindi (

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.


npm i childprocess-queue

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