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authorLennart Weller <lhw@ring0.de>2016-09-05 08:27:26 +0000
committerLennart Weller <lhw@ring0.de>2016-09-05 08:27:26 +0000
commit58d9525d7fcacffe52eff7282b7a888dd0dcc1d0 (patch)
tree251a805eb38d4d75b2a7f44c2cc22e7ea4849513 /plugins.d/loopsleepms.sh.inc
parentFixes for service startup and extra config files (diff)
parentImported Upstream version 1.3.0+dfsg (diff)
downloadnetdata-58d9525d7fcacffe52eff7282b7a888dd0dcc1d0.tar.xz
netdata-58d9525d7fcacffe52eff7282b7a888dd0dcc1d0.zip
Merge tag 'upstream/1.3.0+dfsg'
Upstream version 1.3.0+dfsg
Diffstat (limited to 'plugins.d/loopsleepms.sh.inc')
-rw-r--r--plugins.d/loopsleepms.sh.inc108
1 files changed, 54 insertions, 54 deletions
diff --git a/plugins.d/loopsleepms.sh.inc b/plugins.d/loopsleepms.sh.inc
index 2e22de3d8..02ab694d2 100644
--- a/plugins.d/loopsleepms.sh.inc
+++ b/plugins.d/loopsleepms.sh.inc
@@ -1,4 +1,4 @@
-#!/bin/bash
+# no need for shebang - this file is included from other scripts
# this function is used to sleep a fraction of a second
# it calculates the difference between every time is called
@@ -7,9 +7,9 @@
LOOPSLEEP_DATE="$(which date)"
if [ -z "$LOOPSLEEP_DATE" ]
- then
- echo >&2 "$0: ERROR: Cannot find the command 'date' in the system path."
- exit 1
+ then
+ echo >&2 "$0: ERROR: Cannot find the command 'date' in the system path."
+ exit 1
fi
LOOPSLEEPMS_LASTRUN=0
@@ -21,70 +21,70 @@ test "$($LOOPSLEEP_DATE +%N)" = "%N" && LOOPSLEEPMS_HIGHRES=0
now_ms=
current_time_ms() {
- # if high resolution is not supported
- # just sleep the time requested, in seconds
- if [ $LOOPSLEEPMS_HIGHRES -eq 0 ]
- then
- now_ms="$($LOOPSLEEP_DATE +'%s')000"
- else
- now_ms="$(( $( $LOOPSLEEP_DATE +'%s * 1000 + %-N / 1000000' ) ))"
- fi
+ # if high resolution is not supported
+ # just sleep the time requested, in seconds
+ if [ $LOOPSLEEPMS_HIGHRES -eq 0 ]
+ then
+ now_ms="$($LOOPSLEEP_DATE +'%s')000"
+ else
+ now_ms="$(( $( $LOOPSLEEP_DATE +'%s * 1000 + %-N / 1000000' ) ))"
+ fi
}
loopsleepms() {
- local tellwork=0 t="$1" div s m now mstosleep
+ local tellwork=0 t="$1" div s m now mstosleep
- if [ "$t" = "tellwork" ]
- then
- tellwork=1
- shift
- t="$1"
- fi
- div="${2-100}"
+ if [ "$t" = "tellwork" ]
+ then
+ tellwork=1
+ shift
+ t="$1"
+ fi
+ div="${2-100}"
- # $t = the time in seconds to wait
+ # $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
+ # if high resolution is not supported
+ # just sleep the time requested, in seconds
+ if [ $LOOPSLEEPMS_HIGHRES -eq 0 ]
+ then
+ sleep $t
+ return
+ fi
- # get the current time, in ms
- # milliseconds since epoch (1-1-1970)
- now="$(( $( $LOOPSLEEP_DATE +'%s * 1000 + %-N / 1000000' ) ))"
+ # get the current time, in ms
+ # milliseconds since epoch (1-1-1970)
+ now="$(( $( $LOOPSLEEP_DATE +'%s * 1000 + %-N / 1000000' ) ))"
- # calculate required sleep in ms
- t=$((t * 1000 * div / 100))
+ # calculate required sleep in ms
+ t=$((t * 1000 * div / 100))
- # this is our first run
- # just wait the requested time
- test $LOOPSLEEPMS_LASTRUN -eq 0 && LOOPSLEEPMS_LASTRUN=$now
+ # this is our first run
+ # just wait the requested time
+ test $LOOPSLEEPMS_LASTRUN -eq 0 && LOOPSLEEPMS_LASTRUN=$now
- # calculate ms since last run
- LOOPSLEEPMS_LASTWORK=$((now - LOOPSLEEPMS_LASTRUN - LOOPSLEEPMS_LASTSLEEP))
- # echo "# last loop's work took $LOOPSLEEPMS_LASTWORK ms"
+ # calculate ms since last run
+ LOOPSLEEPMS_LASTWORK=$((now - LOOPSLEEPMS_LASTRUN - LOOPSLEEPMS_LASTSLEEP))
+ # echo "# last loop's work took $LOOPSLEEPMS_LASTWORK ms"
- # calculate ms to sleep
- mstosleep=$(( t - LOOPSLEEPMS_LASTWORK ))
- # echo "# mstosleep is $mstosleep ms"
+ # calculate ms to sleep
+ mstosleep=$(( t - LOOPSLEEPMS_LASTWORK ))
+ # echo "# mstosleep is $mstosleep ms"
- # if we are too slow, sleep some time
- test $mstosleep -lt 200 && mstosleep=200
+ # if we are too slow, sleep some time
+ test $mstosleep -lt 200 && mstosleep=200
- s=$((mstosleep / 1000))
- m=$((mstosleep - (s * 1000)))
+ s=$((mstosleep / 1000))
+ m=$((mstosleep - (s * 1000)))
- test $tellwork -eq 1 && echo >&2 " >>> PERFORMANCE >>> WORK TOOK $LOOPSLEEPMS_LASTWORK ms ( $((LOOPSLEEPMS_LASTWORK * 100 / 1000)).$((LOOPSLEEPMS_LASTWORK % 10))% cpu ) >>> SLEEPING $mstosleep ms"
+ 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
- sleep $s.$m
+ # echo "# sleeping $s.$m"
+ # echo
+ sleep $s.$m
- # keep the values we need
- # for our next run
- LOOPSLEEPMS_LASTRUN=$now
- LOOPSLEEPMS_LASTSLEEP=$mstosleep
+ # keep the values we need
+ # for our next run
+ LOOPSLEEPMS_LASTRUN=$now
+ LOOPSLEEPMS_LASTSLEEP=$mstosleep
}