Multithreaded bat file

[Masquerade]

Hello everyone,

I have a bat file designed to carry out a task for all files in a folder via FOR command.

Currently, it only processes one file at once then moves onto the next file. For folders with, say, 200 items, this doesn't take long. However, it takes several hours to process large folders with several thousand items inside.

So, if I have 16 threads, is there any way to run the FOR task for 16 files at once all the way until all files are processed?

[shazzla]

Maybe this workaround can help you a bit ?! :

https://superuser.com/questions/1062...ter-batch-file

Somewhere i read, batch programming is very basic,cant do multithreading as you want.
Or im wrong?!

[Prince4]

You can create a batch file for each folder and run them all at once. With "Call" or "Start" i guess.


Edit : What shazzla said.

[Joe Forster/STA]

This is the Unix bg command. It moves processes to the background - hence the name -, disconnecting their output from the console.

A more useful utility would be one that can launch command lines in the background. Try the built-in "start" command of Windows, with the options "/b" and "/min" and process priority, although it's not much. I use something like this when I want to compress multiple EXE's in the same directory with UPX.

None of these can synchronize the subprocesses, that is, make sure that exactly N subprocesses run at the same time and when one of them finishes, only then does the next one start.

[panker1992]

i am using this for the past years and it works well

https://github.com/lordmulder/MParallel

[Masquerade]

Originally Posted by panker1992

i am using this for the past years and it works well

https://github.com/lordmulder/MParallel

It first I was slightly confused by your reply, but after thinking it through I realised I can convert my for commands to echo into a list of commands for mparallel.

Thanks for the help, problem solved.