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Add FreeBSD support to memory stat

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This commit is contained in:
Justin Coffman 2021-01-21 20:19:21 -05:00
commit f39446dc80
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1 changed files with 34 additions and 16 deletions
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20
usr/lib/byobu/memory
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@ -26,7 +26,9 @@ __memory_detail() {
__memory() {
local free="" total="" buffers="" cached=""
local kb_main_used=0 buffers_plus_cached=0 fo_buffers=0 fo_cached=0
if [ -r /proc/meminfo ]; then
if [ $(uname) != "FreeBSD"]; then
while read tok val unit; do
case "$tok" in
MemTotal:) total=${val};;
@ -36,6 +38,20 @@ __memory() {
esac
[ -n "${free}" -a -n "${total}" -a -n "${buffers}" -a -n "${cached}" ] && break;
done < /proc/meminfo
else
# FreeBSD support
page_size=$(sysctl vm.stats.vm.v_page_size | awk '{print $2'})
page_count=$(sysctl vm.stats.vm.v_page_count | awk '{print $2'})
total=$((($page_count*$page_size)/1024))
cache_pages=$(sysctl vm.stats.vm.v_cache_count | awk '{print $2'})
inact_pages=$(sysctl vm.stats.vm.v_inactive_count | awk '{print $2'})
free_pages=$(sysctl vm.stats.vm.v_free_count | awk '{print $2'})
free=$(((($cache_pages+$inact_pages+$free_pages)*$page_size)/1024))
buffers=0
cached=0
fi
elif eval $BYOBU_TEST vm_stat >/dev/null 2>&1; then
# MacOS support
# calculation borrowed from http://apple.stackexchange.com/a/48195/18857
@ -44,16 +60,18 @@ __memory() {
speculative_blocks=$(vm_stat | grep speculative | awk '{ print $3 }' | sed -e 's/\.//')
free=$((($free_blocks+speculative_blocks)*4))
inactive=$(($inactive_blocks*4))
total=$((($free+$inactive)))
total=$(($free+$inactive))
buffers=0
cached=0
fi
kb_main_used=$(($total-$free))
buffers_plus_cached=$(($buffers+$cached))
# "free output" buffers and cache (output from 'free')
fo_buffers=$(($kb_main_used - $buffers_plus_cached))
fpdiv $((100*${fo_buffers})) "${total}" 0;
usage=${_RET}
if [ $total -ge 1048576 ]; then
fpdiv "$total" 1048567 1
total=${_RET}