From 8a7b72f7cd1ccd547a03eb4243294e741d661d3f Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Fri, 8 Feb 2019 08:30:37 +0100 Subject: Adding upstream version 1.12.0. Signed-off-by: Daniel Baumann --- collectors/charts.d.plugin/loopsleepms.sh.inc | 282 ++++++++++++-------------- 1 file changed, 132 insertions(+), 150 deletions(-) (limited to 'collectors/charts.d.plugin/loopsleepms.sh.inc') diff --git a/collectors/charts.d.plugin/loopsleepms.sh.inc b/collectors/charts.d.plugin/loopsleepms.sh.inc index bdc032b99..e44eff689 100644 --- a/collectors/charts.d.plugin/loopsleepms.sh.inc +++ b/collectors/charts.d.plugin/loopsleepms.sh.inc @@ -2,10 +2,9 @@ # SPDX-License-Identifier: GPL-3.0-or-later LOOPSLEEP_DATE="$(which date 2>/dev/null || command -v date 2>/dev/null)" -if [ -z "$LOOPSLEEP_DATE" ] - then - echo >&2 "$0: ERROR: Cannot find the command 'date' in the system path." - exit 1 +if [ -z "$LOOPSLEEP_DATE" ]; then + echo >&2 "$0: ERROR: Cannot find the command 'date' in the system path." + exit 1 fi # ----------------------------------------------------------------------------- @@ -14,14 +13,13 @@ fi now_ms= LOOPSLEEPMS_HIGHRES=1 test "$($LOOPSLEEP_DATE +%N)" = "%N" && LOOPSLEEPMS_HIGHRES=0 -test -z "$($LOOPSLEEP_DATE +%N)" && LOOPSLEEPMS_HIGHRES=0 +test -z "$($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 + if [ $LOOPSLEEPMS_HIGHRES -eq 0 ]; then + now_ms="$($LOOPSLEEP_DATE +'%s')000" + else + now_ms="$(($($LOOPSLEEP_DATE +'%s * 1000 + %-N / 1000000')))" + fi } # ----------------------------------------------------------------------------- @@ -32,55 +30,49 @@ 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}" + 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 "$0: Invalid setup for current_time_ms_from_uptime() - falling back to current_time_ms_from_date()." - current_time_ms="current_time_ms_from_date" - current_time_ms_accuracy=1 +if [ "${current_time_ms_from_uptime_first}" -eq 0 ]; then + echo >&2 "$0: Invalid setup for current_time_ms_from_uptime() - falling back to current_time_ms_from_date()." + current_time_ms="current_time_ms_from_date" + current_time_ms_accuracy=1 fi # ----------------------------------------------------------------------------- @@ -94,55 +86,48 @@ mysleep_fifo="${NETDATA_CACHE_DIR-/tmp}/.netdata_bash_sleep_timer_fifo" [ -p "${mysleep_fifo}" ] && mysleep="mysleep_read" mysleep_read() { - read -t "${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 + 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 } # ----------------------------------------------------------------------------- # use bash loadable module for sleep mysleep_builtin() { - builtin sleep "${1}" - ret=$? - if [ $ret -ne 0 ] - then - echo >&2 "$0: Cannot use builtin sleep for sleeping (return code ${ret})." - mysleep="sleep" - ${mysleep} "${1}" - fi + builtin sleep "${1}" + ret=$? + if [ $ret -ne 0 ]; then + echo >&2 "$0: Cannot use builtin sleep for sleeping (return code ${ret})." + mysleep="sleep" + ${mysleep} "${1}" + fi } -if [ -z "${mysleep}" -a "$((BASH_VERSINFO[0] +0))" -ge 3 -a "${NETDATA_BASH_LOADABLES}" != "DISABLE" ] - then - # enable modules only for bash version 3+ - - for bash_modules_path in ${BASH_LOADABLES_PATH//:/ } "$(pkg-config bash --variable=loadablesdir 2>/dev/null)" "/usr/lib/bash" "/lib/bash" "/lib64/bash" "/usr/local/lib/bash" "/usr/local/lib64/bash" - do - [ -z "${bash_modules_path}" -o ! -d "${bash_modules_path}" ] && continue - - # check for sleep - for bash_module_sleep in "sleep" "sleep.so" - do - if [ -f "${bash_modules_path}/${bash_module_sleep}" ] - then - if enable -f "${bash_modules_path}/${bash_module_sleep}" sleep 2>/dev/null - then - mysleep="mysleep_builtin" - # echo >&2 "$0: Using bash loadable ${bash_modules_path}/${bash_module_sleep} for sleep" - break - fi - fi - - done - - [ ! -z "${mysleep}" ] && break - done +if [ -z "${mysleep}" -a "$((BASH_VERSINFO[0] + 0))" -ge 3 -a "${NETDATA_BASH_LOADABLES}" != "DISABLE" ]; then + # enable modules only for bash version 3+ + + for bash_modules_path in ${BASH_LOADABLES_PATH//:/ } "$(pkg-config bash --variable=loadablesdir 2>/dev/null)" "/usr/lib/bash" "/lib/bash" "/lib64/bash" "/usr/local/lib/bash" "/usr/local/lib64/bash"; do + [ -z "${bash_modules_path}" -o ! -d "${bash_modules_path}" ] && continue + + # check for sleep + for bash_module_sleep in "sleep" "sleep.so"; do + if [ -f "${bash_modules_path}/${bash_module_sleep}" ]; then + if enable -f "${bash_modules_path}/${bash_module_sleep}" sleep 2>/dev/null; then + mysleep="mysleep_builtin" + # echo >&2 "$0: Using bash loadable ${bash_modules_path}/${bash_module_sleep} for sleep" + break + fi + fi + + done + + [ ! -z "${mysleep}" ] && break + done fi # ----------------------------------------------------------------------------- @@ -150,7 +135,6 @@ fi [ -z "${mysleep}" ] && mysleep="sleep" - # ----------------------------------------------------------------------------- # this function is used to sleep a fraction of a second # it calculates the difference between every time is called @@ -163,60 +147,58 @@ 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=$mstosleep + local tellwork=0 t="${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 -- cgit v1.2.3