From a64a253794ac64cb40befee54db53bde17dd0d49 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Wed, 7 Nov 2018 13:19:29 +0100 Subject: New upstream version 1.11.0+dfsg Signed-off-by: Daniel Baumann --- plugins.d/loopsleepms.sh.inc | 189 ------------------------------------------- 1 file changed, 189 deletions(-) delete mode 100644 plugins.d/loopsleepms.sh.inc (limited to 'plugins.d/loopsleepms.sh.inc') diff --git a/plugins.d/loopsleepms.sh.inc b/plugins.d/loopsleepms.sh.inc deleted file mode 100644 index ef3db192d..000000000 --- a/plugins.d/loopsleepms.sh.inc +++ /dev/null @@ -1,189 +0,0 @@ -# no need for shebang - this file is included from other scripts - -LOOPSLEEP_DATE="$(which date 2>/dev/null || command -v date 2>/dev/null)" -if [ -z "$LOOPSLEEP_DATE" ] - then - echo >&2 "$0: ERROR: Cannot find the command 'date' in the system path." - exit 1 -fi - -# ----------------------------------------------------------------------------- -# use the date command as a high resolution timer - -now_ms= -LOOPSLEEPMS_HIGHRES=1 -test "$($LOOPSLEEP_DATE +%N)" = "%N" && LOOPSLEEPMS_HIGHRES=0 -test -z "$($LOOPSLEEP_DATE +%N)" && LOOPSLEEPMS_HIGHRES=0 -current_time_ms_from_date() { - if [ $LOOPSLEEPMS_HIGHRES -eq 0 ] - then - now_ms="$($LOOPSLEEP_DATE +'%s')000" - else - now_ms="$(( $( $LOOPSLEEP_DATE +'%s * 1000 + %-N / 1000000' ) ))" - fi -} - -# ----------------------------------------------------------------------------- -# use /proc/uptime as a high resolution timer - -current_time_ms_from_date -current_time_ms_from_uptime_started="${now_ms}" -current_time_ms_from_uptime_last="${now_ms}" -current_time_ms_from_uptime_first=0 -current_time_ms_from_uptime() { - local up rest arr=() n - - read up rest &2 "$0: Cannot read /proc/uptime - falling back to current_time_ms_from_date()." - current_time_ms="current_time_ms_from_date" - current_time_ms_from_date - current_time_ms_accuracy=1 - return - fi - - arr=(${up//./ }) - - if [ ${#arr[1]} -lt 1 ] - then - n="${arr[0]}000" - elif [ ${#arr[1]} -lt 2 ] - then - n="${arr[0]}${arr[1]}00" - elif [ ${#arr[1]} -lt 3 ] - then - n="${arr[0]}${arr[1]}0" - else - n="${arr[0]}${arr[1]}" - fi - - now_ms=$((current_time_ms_from_uptime_started - current_time_ms_from_uptime_first + n)) - - if [ "${now_ms}" -lt "${current_time_ms_from_uptime_last}" ] - then - echo >&2 "$0: Cannot use current_time_ms_from_uptime() - new time ${now_ms} is older than the last ${current_time_ms_from_uptime_last} - falling back to current_time_ms_from_date()." - current_time_ms="current_time_ms_from_date" - current_time_ms_from_date - current_time_ms_accuracy=1 - fi - - current_time_ms_from_uptime_last="${now_ms}" -} -current_time_ms_from_uptime -current_time_ms_from_uptime_first="$((now_ms - current_time_ms_from_uptime_started))" -current_time_ms_from_uptime_last="${current_time_ms_from_uptime_first}" -current_time_ms="current_time_ms_from_uptime" -current_time_ms_accuracy=10 -if [ "${current_time_ms_from_uptime_first}" -eq 0 ] - then - echo >&2 "$0: Invalid setup for current_time_ms_from_uptime() - falling back to current_time_ms_from_date()." - current_time_ms="current_time_ms_from_date" - current_time_ms_accuracy=1 -fi - -# ----------------------------------------------------------------------------- -# use read with timeout for sleep - -mysleep="mysleep_read" - -mysleep_fifo="${NETDATA_CACHE_DIR-/tmp}/.netdata_bash_sleep_timer_fifo" -[ ! -e "${mysleep_fifo}" ] && mkfifo "${mysleep_fifo}" -[ ! -e "${mysleep_fifo}" ] && mysleep="sleep" - -mysleep_read() { - read -t "${1}" <>"${mysleep_fifo}" - ret=$? - if [ $ret -le 128 ] - then - echo >&2 "$0: Cannot use read for sleeping (return code ${ret})." - mysleep="sleep" - ${mysleep} "${1}" - fi -} - - -# ----------------------------------------------------------------------------- -# this function is used to sleep a fraction of a second -# it calculates the difference between every time is called -# and tries to align the sleep time to give you exactly the -# loop you need. - -LOOPSLEEPMS_LASTRUN=0 -LOOPSLEEPMS_NEXTRUN=0 -LOOPSLEEPMS_LASTSLEEP=0 -LOOPSLEEPMS_LASTWORK=0 - -loopsleepms() { - local tellwork=0 t="${1}" div s m now mstosleep - - if [ "${t}" = "tellwork" ] - then - tellwork=1 - shift - t="${1}" - fi - - # $t = the time in seconds to wait - - # if high resolution is not supported - # just sleep the time requested, in seconds - if [ ${LOOPSLEEPMS_HIGHRES} -eq 0 ] - then - sleep ${t} - return - fi - - # get the current time, in ms in ${now_ms} - ${current_time_ms} - - # calculate ms since last run - [ ${LOOPSLEEPMS_LASTRUN} -gt 0 ] && \ - LOOPSLEEPMS_LASTWORK=$((now_ms - LOOPSLEEPMS_LASTRUN - LOOPSLEEPMS_LASTSLEEP + current_time_ms_accuracy)) - # echo "# last loop's work took $LOOPSLEEPMS_LASTWORK ms" - - # remember this run - LOOPSLEEPMS_LASTRUN=${now_ms} - - # calculate the next run - LOOPSLEEPMS_NEXTRUN=$(( ( now_ms - ( now_ms % ( t * 1000 ) ) ) + ( t * 1000 ) )) - - # calculate ms to sleep - mstosleep=$(( LOOPSLEEPMS_NEXTRUN - now_ms + current_time_ms_accuracy )) - # echo "# mstosleep is $mstosleep ms" - - # if we are too slow, sleep some time - test ${mstosleep} -lt 200 && mstosleep=200 - - s=$(( mstosleep / 1000 )) - m=$(( mstosleep - (s * 1000) )) - [ "${m}" -lt 100 ] && m="0${m}" - [ "${m}" -lt 10 ] && m="0${m}" - - test $tellwork -eq 1 && echo >&2 " >>> PERFORMANCE >>> WORK TOOK ${LOOPSLEEPMS_LASTWORK} ms ( $((LOOPSLEEPMS_LASTWORK * 100 / 1000)).$((LOOPSLEEPMS_LASTWORK % 10))% cpu ) >>> SLEEPING ${mstosleep} ms" - - # echo "# sleeping ${s}.${m}" - # echo - ${mysleep} ${s}.${m} - - # keep the values we need - # for our next run - LOOPSLEEPMS_LASTSLEEP=$mstosleep -} - -# test it -#while [ 1 ] -#do -# r=$(( (RANDOM * 2000 / 32767) )) -# s=$((r / 1000)) -# m=$((r - (s * 1000))) -# [ "${m}" -lt 100 ] && m="0${m}" -# [ "${m}" -lt 10 ] && m="0${m}" -# echo "${r} = ${s}.${m}" -# -# # the work -# ${mysleep} ${s}.${m} -# -# # the alignment loop -# loopsleepms tellwork 1 -#done -- cgit v1.2.3