sup: delay runs if commands exits too fast

Signed-off-by: Florian Pritz <bluewind@server-speed.net>

1 files changed, 26 insertions, 2 deletions

diff --git a/sup b/sup
index 9fad081..d2d84eb 100755
--- a/sup
+++ b/sup
@@ -1,20 +1,44 @@
 #!/bin/sh
 
+# delay starting after 2 failed runs
+delay_after=2
+# reset delay counter after 60 seconds
+delay_reset_after=60
+# delay for 30 seconds
+delay=30
+
 command="$*"
+times_ran=0
 
 cleanup() {
-  echo "killed... $pid"
-  kill $pid
+  if [ -n "$pid" ]; then
+    echo "killed... $pid"
+    kill $pid
+  fi
   exit
 }
 
 trap cleanup 2 15
 
 while :; do
+  times_ran=$(($times_ran+1))
+  if [ $times_ran -gt $delay_after ]; then
+    echo "sleeping for after $(($times_ran-1)) runs in $delay_reset_after seconds"
+    sleep $delay
+  fi
+
+  time_started=`date +%s`
   echo -n "running... "
+
   $command &
   pid=$!
   echo PID: $pid
   wait $pid
+  pid=""
+
+  # reset counter if run long enough
+  if [ $(($time_started+$delay_reset_after)) -lt `date +%s` ]; then
+    times_ran=0
+  fi
 done