diff options
Diffstat (limited to '')
| -rw-r--r-- | collectors/charts.d.plugin/loopsleepms.sh.inc (renamed from plugins.d/loopsleepms.sh.inc) | 54 |
1 files changed, 51 insertions, 3 deletions
diff --git a/plugins.d/loopsleepms.sh.inc b/collectors/charts.d.plugin/loopsleepms.sh.inc index ef3db192d..bdc032b99 100644 --- a/plugins.d/loopsleepms.sh.inc +++ b/collectors/charts.d.plugin/loopsleepms.sh.inc @@ -1,4 +1,5 @@ # no need for shebang - this file is included from other scripts +# 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" ] @@ -85,11 +86,12 @@ fi # ----------------------------------------------------------------------------- # use read with timeout for sleep -mysleep="mysleep_read" +mysleep="" mysleep_fifo="${NETDATA_CACHE_DIR-/tmp}/.netdata_bash_sleep_timer_fifo" -[ ! -e "${mysleep_fifo}" ] && mkfifo "${mysleep_fifo}" -[ ! -e "${mysleep_fifo}" ] && mysleep="sleep" +[ -f "${mysleep_fifo}" ] && rm "${mysleep_fifo}" +[ ! -p "${mysleep_fifo}" ] && mkfifo "${mysleep_fifo}" +[ -p "${mysleep_fifo}" ] && mysleep="mysleep_read" mysleep_read() { read -t "${1}" <>"${mysleep_fifo}" @@ -102,6 +104,52 @@ mysleep_read() { fi } +# ----------------------------------------------------------------------------- +# use bash loadable module for sleep + +mysleep_builtin() { + builtin sleep "${1}" + ret=$? + if [ $ret -ne 0 ] + then + echo >&2 "$0: Cannot use builtin sleep for sleeping (return code ${ret})." + mysleep="sleep" + ${mysleep} "${1}" + fi +} + +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 "${mysleep}" ] && break + done +fi + +# ----------------------------------------------------------------------------- +# fallback to external sleep + +[ -z "${mysleep}" ] && mysleep="sleep" + # ----------------------------------------------------------------------------- # this function is used to sleep a fraction of a second |