phundrak/eshell-info-banner.el
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Separate functions getting memory info for Darwin and NetBSD systems

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Fixes #17
This commit is contained in:
Lucien Cartier-Tilet 2022-01-04 19:33:04 +01:00
parent d248447cb0
commit 20d0682f39
Signed by: phundrak
GPG Key ID: BD7789E705CB8DCA
1 changed files with 71 additions and 31 deletions
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102
eshell-info-banner.el
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@ -2,7 +2,7 @@
;; Author: Lucien Cartier-Tilet <lucien@phundrak.com>
;; Maintainer: Lucien Cartier-Tilet <lucien@phundrak.com>
;; Version: 0.8.1
;; Version: 0.8.2
;; Package-Requires: ((emacs "25.1") (f "0.20") (s "1"))
;; Homepage: https://github.com/Phundrak/eshell-info-banner.el
@ -467,39 +467,79 @@ For TEXT-PADDING and BAR-LENGTH, see the documentation of
"\n"
t)))
(defun eshell-info-banner--get-memory-unix ()
"Get memory usage for UNIX systems.
Compatible with Darwin and FreeBSD at least."
(let* ((command-to-mem (lambda (command)
(string-to-number
(defun eshell-info-banner--get-memory-unix-command-to-mem (command)
(string-to-number
(s-trim
(car (last
(split-string (eshell-info-banner--shell-command-to-string command)
" "
t))))))
(defun eshell-info-banner--get-memory-netbsd ()
"Get memory usage for NetBSD systems.
See `eshell-info-banner--get-memory'."
(let* ((total (eshell-info-banner--get-memory-unix-command-to-mem `("sysctl hw.physmem64")))
(used (- total
(* 1024 (string-to-number
(s-trim
(car (last
(split-string (eshell-info-banner--shell-command-to-string command)
" "
t)))))))
(netbsdp (and (equal system-type 'berkeley-unix)
(string-match-p "NetBSD" (eshell-info-banner--shell-command-to-string "uname"))))
(total (apply command-to-mem `(,(if netbsdp "sysctl hw.physmem64" "sysctl hw.physmem"))))
(used (if netbsdp
(- total
(* 1024 (string-to-number
(s-trim
(with-temp-buffer
(insert-file-contents-literally "/proc/meminfo")
(save-match-data
(string-match (rx bol
"MemFree:"
(* blank)
(group (+ digit))
(* blank)
"kB")
(buffer-string))
(substring-no-properties (buffer-string)
(match-beginning 1)
(match-end 1))))))))
(apply command-to-mem '("sysctl hw.usermem")))))
(with-temp-buffer
(insert-file-contents-literally "/proc/meminfo")
(save-match-data
(string-match (rx bol
"MemFree:"
(* blank)
(group (+ digit))
(* blank)
"kB")
(buffer-string))
(substring-no-properties (buffer-string)
(match-beginning 1)
(match-end 1))))))))))
`(("RAM" ,total ,used))))
(defun eshell-info-banner--get-memory-darwin ()
"Get memory usage for Darwin systems.
See `eshell-info-banner--get-memory'."
(let* ((total (eshell-info-banner--get-memory-unix-command-to-mem "sysctl -n hw.memsize"))
(vmstat (with-temp-buffer
(call-process "vm_stat" nil t nil)
(buffer-string)))
(wired (save-match-data
(string-match (rx " wired" (* (not digit)) (+ blank) (group (+ digit)) ".")
vmstat)
(* 1024 4
(string-to-number (substring-no-properties vmstat
(match-beginning 1)
(match-end 1))))))
(active (save-match-data
(string-match (rx " active" (* (not digit)) (+ blank) (group (+ digit)) ".")
vmstat)
(* 1024 4
(string-to-number (substring-no-properties vmstat
(match-beginning 1)
(match-end 1))))))
(compressed (save-match-data
(if (string-match (rx " occupied" (* (not digit)) (+ blank) (group (+ digit)) ".")
vmstat)
(* 1024 4
(string-to-number (substring-no-properties vmstat
(match-beginning 1)
(match-end 1))))
0))))
`(("RAM" ,total ,(+ wired active compressed)))))
(defun eshell-info-banner--get-memory-unix ()
"Get memory usage for UNIX systems."
(cond ((and (equal system-type 'berkeley-unix)
(string-match-p "NetBSD" (eshell-info-banner--shell-command-to-string "uname")))
(eshell-info-banner--get-memory-netbsd))
((equal system-type 'darwin)
(eshell-info-banner--get-memory-darwin))
(t
(let* ((total (eshell-info-banner--get-memory-unix-command-to-mem "sysctl hw.physmem"))
(used (eshell-info-banner--get-memory-unix-command-to-mem "sysctl hw.usermem")))
`(("RAM" ,total ,used))))))
(defun eshell-info-banner--get-memory-windows ()
"Get memory usage for Window."
(warn "Memory usage not yet implemented for Windows and DOS")