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From: Bart Schaefer <schaefer@brasslantern.com>
To: Perry Smith <pedz@easesoftware.com>
Cc: Zsh Users <zsh-users@zsh.org>
Subject: Re: Parallel processing
Date: Fri, 25 Mar 2022 11:27:12 -0700	[thread overview]
Message-ID: <CAH+w=7baN47QxGiga9WVTHHny7JnjbbCudfkDKR+qEq1pAgcnw@mail.gmail.com> (raw)
In-Reply-To: <1E0E1226-E3E8-40AD-87CD-93A602B1B08B@easesoftware.com>

On Thu, Mar 24, 2022 at 9:34 PM Perry Smith <pedz@easesoftware.com> wrote:
> Has something like prll (parallel) https://github.com/exzombie/prll been added to zsh?

Look at the "zargs" function, -P option (which works like "xargs -P"
for the most part).

Silly example:

autoload zargs
zmodload zsh/system
zargs -n 2 -P 4 -- {1..20} -- eval '() { print $1 $sysparams[pid]; sleep 2 }'

Note you need -n 2 there because the first "word" is the argument to
eval and the second "word" is the successive integer from the list 1
through 20.

This isn't exactly what you want because it waits for all four jobs
before starting the next batch, but keeping a specific number of
children running is not straightforward with the job-management
operations available to a shell.

  reply	other threads:[~2022-03-25 18:28 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-03-25  4:34 Perry Smith
2022-03-25 18:27 ` Bart Schaefer [this message]
2022-03-26 18:10   ` Philippe Troin
2022-03-26 22:19     ` Bart Schaefer
2022-03-27 17:32       ` Philippe Troin
2022-03-27 17:42         ` Bart Schaefer
2022-03-27 19:23 ` Dominik Vogt
2022-03-28 13:26   ` Perry Smith
2022-03-28 13:31 ` Perry Smith
2022-03-26  4:34 jdh
2022-03-27 18:37 jdh
2022-03-27 19:06 ` Bart Schaefer
2022-03-27 19:24   ` Ray Andrews
2022-03-28 13:47 ` Perry Smith

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