79 lines
2.6 KiB
Bash
Executable File
79 lines
2.6 KiB
Bash
Executable File
#!/bin/sh -e
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#
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# mem_available: grab the current memory and usage
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#
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# Copyright (C) 2008 Canonical Ltd.
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# Copyright (C) 2011-2014 Dustin Kirkland
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#
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# Authors: Dustin Kirkland <kirkland@byobu.org>
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, version 3 of the License.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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__memory_detail() {
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free
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}
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__memory() {
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local free="" total="" buffers="" cached=""
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local kb_main_used=0 buffers_plus_cached=0 fo_buffers=0 fo_cached=0
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if [ -r /proc/meminfo ]; then
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while read tok val unit; do
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case "$tok" in
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MemTotal:) total=${val};;
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MemFree:) free=${val};;
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Buffers:) buffers=${val};;
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Cached:) cached=${val};;
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esac
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[ -n "${free}" -a -n "${total}" -a -n "${buffers}" -a -n "${cached}" ] && break;
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done < /proc/meminfo
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elif eval $BYOBU_TEST vm_stat >/dev/null 2>&1; then
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# MacOS support
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# calculation borrowed from http://apple.stackexchange.com/a/48195/18857
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free_blocks=$(vm_stat | grep free | awk '{ print $3 }' | sed -e 's/\.//')
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inactive_blocks=$(vm_stat | grep inactive | awk '{ print $3 }' | sed -e 's/\.//')
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speculative_blocks=$(vm_stat | grep speculative | awk '{ print $3 }' | sed -e 's/\.//')
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free=$((($free_blocks+speculative_blocks)*4))
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inactive=$(($inactive_blocks*4))
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total=$((($free+$inactive)))
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buffers=0
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cached=0
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fi
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kb_main_used=$(($total-$free))
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buffers_plus_cached=$(($buffers+$cached))
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# "free output" buffers and cache (output from 'free')
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fo_buffers=$(($kb_main_used - $buffers_plus_cached))
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fpdiv $((100*${fo_buffers})) "${total}" 0;
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usage=${_RET}
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if [ $total -ge 1048576 ]; then
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fpdiv "$total" 1048567 1
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total=${_RET}
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unit="$ICON_GB"
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elif [ $total -ge 1024 ]; then
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fpdiv "$total" 1024 0
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total=${_RET}
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unit="$ICON_MB"
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else
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unit="$ICON_KB"
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fi
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if [ $usage -gt 90 ]; then
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# Change foreground to yellow, if usage over 90%
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fg="Y"
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else
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fg="W"
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fi
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[ -n "$total" ] || return
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color b g W; printf "%s" "$total"; color -; color g W; printf "%s" "$unit"; color -; color b g "$fg"; printf "%s" "$usage"; color -; color g "$fg"; printf "%s" "$PCT"; color --
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}
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# vi: syntax=sh ts=4 noexpandtab
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