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Extract CPU counting to doom-num-cpus function

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And improves macOS support as discussed in hlissner/doom-emacs@db6a27c
This commit is contained in:
Henrik Lissner
2020-11-29 14:47:32 -05:00
parent b49c40bbb3
commit b91a1b3e7b
3 changed files with 22 additions and 13 deletions
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18
core/autoload/process.el
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@ -40,3 +40,21 @@ Warning: freezes indefinitely on any stdin prompt."
(sit-for 0.1))
(process-exit-status process))
(string-trim (buffer-string)))))
(defvar doom-num-cpus nil)
;;;###autoload
(defun doom-num-cpus ()
"Return the max number of processing units on this system.
Tries to be portable. Returns 1 if cannot be determined."
(or doom-num-cpus
(setq doom-num-cpus
(max
1 (cond ((eq 'windows-nt system-type)
(or (ignore-errors
(string-to-number (getenv "NUMBER_OF_PROCESSORS")))
1))
((executable-find "nproc")
(string-to-number (cdr (doom-call-process "nproc"))))
((and IS-MAC (executable-find "sysctl"))
(string-to-number (cdr (doom-call-process "sysctl" "-n" "hw.ncpu"))))
(t 1))))))