1 files changed, 47 insertions, 9 deletions

diff --git a/ioslay-mgr.sh b/ioslay-mgr.sh
index d4f545c..d7ce1cb 100755
--- a/ioslay-mgr.sh
+++ b/ioslay-mgr.sh
@@ -1,16 +1,16 @@
-#!/bin/sh
+#!/bin/bash
 
 ioslay=
 each_new_process()
 {
     while read pid _
     do
-        set -- "$@" $pid
+        read -N 10001000 procs < /sys/fs/cgroup/$group/cgroup.procs
+        set -- $procs
 
-        # filter non-existent processes
-        for _ in "$@"
+        for pid in "$@"
         do
-            if [ -e /proc/"$1" ]
+            if read comm < /proc/$pid/comm && [ "$comm" = 'Web Content' ]
             then
                 set -- "$@" "$1"
             fi
@@ -19,7 +19,11 @@ each_new_process()
 
         if [ "$ioslay" ]
         then
-            kill $(pgrep -P $ioslay)
+            children=$(pgrep -P $ioslay)
+            if [ "$children" ]
+            then
+                kill $children
+            fi
             wait $ioslay
         fi
 
@@ -45,7 +49,41 @@ get_uid()
     )
 }
 
-# group=firefox~$(get_uid)
-group=firefox~1000
+#cgroup-show-each-new-process "$group" | grep --line-buffered 'Web Content' | each_new_process
+
+# Really, could just check for any/first cgroup with processes and basename
+# 'firefox'.  Fork for each one.
+
+uid=1000
+group=user.slice/user-$uid.slice/firefox
+wantcomm='Web Content'
+ioslay=
+lastprocs=
+while true
+do
+    read -N 1000100 procs < /sys/fs/cgroup/$group/cgroup.procs
+    if [ "$procs" ]
+    then
+        set --
+        for pid in $procs
+        do
+            read comm < /proc/$pid/comm
+            if [ "$comm" = "$wantcomm" ]
+            then
+                set -- "$@" "$pid"
+            fi
+        done
+
+        echo "pids: ($*|$(echo $procs))" >&2
+        if [ "$lastargs" != "$*" ]
+        then
+            [ -z "$ioslay" ] || kill $ioslay $(pgrep -P $ioslay)
+            wait $ioslay
+            ioslay-firefox "$@" &
+            ioslay=$!
+        fi
+        lastargs=$*
+    fi
+    sleep 1
+done
 
-cgroup-show-each-new-process "$group" | grep --line-buffered 'Web Content' | each_new_process