1 files changed, 95 insertions, 0 deletions

diff --git a/src/firefox-io-slayer b/src/firefox-io-slayer
new file mode 100755
index 0000000..fe54e37
--- /dev/null
+++ b/src/firefox-io-slayer
@@ -0,0 +1,95 @@
+#!/bin/bash
+
+DISPLAY=$1
+
+if [ -e /usr/lib/bash/sleep ]
+then
+    enable -f /usr/lib/bash/sleep sleep
+fi
+
+export NOTICE=y
+noticeLOG() { [ "$NOTICE" ] || return; echo "Notice: $*" >&2; }
+debugLOG() { [ "$DBG" ] || return; echo "Debug: $*" >&2; }
+
+. sliceweasel.lib.sh
+
+vkill()
+{
+    if [ $# = 0 ]
+    then
+        return
+    fi
+    (
+        if [ "$(id -u)" = 0 ]
+        then sudo=
+        else sudo=sudo
+        fi
+        set -x
+        ps u "$@"
+        $sudo kill "$@"
+    )
+}
+
+slay_slayer()
+{
+    if [ "$ioslay" ]
+    then
+        children=$(for pid in $ioslay; do pgrep -P $ioslay; done)
+        grandchildren=$(for pid in $children; do pgrep -P $pid; done)
+        vkill $ioslay $children $grandchildren
+    fi
+}
+
+group_procs=$(get_firefox_cgroup_procs)
+
+ioslay=
+lastprocs=
+SIGNALLED=
+trap 'SIGNALLED=y' SIGINT SIGTERM SIGHUP
+while [ ! "$SIGNALLED" ]
+do
+    if ! [ -e "$group_procs" ]
+    then
+        [ "$warned" ] || echo "Warning: firefox not running or cgroup not found" >&2
+        warned=y
+    else
+        if [ "$warned" ]
+        then
+            echo "Found firefox cgroup: $group_procs" >&2
+            warned=
+        fi
+        read -N 1000100 procs < "$group_procs"
+        if [ "$procs" ]
+        then
+            set --
+            for pid in $procs
+            do
+                read comm < /proc/$pid/comm
+                case "$comm" in
+                    'Isolated Web Content' | 'Web Content' | 'Isolated Web Co')
+                        set -- "$@" "$pid"
+                        debugLOG "accept /proc/$pid/comm $comm"
+                        ;;
+                    *)
+                       debugLOG "reject /proc/$pid/comm $comm"
+                esac
+            done
+
+            # echo "pids: ($*|$(echo $procs))" >&2
+            if [ "$lastargs" != "$*" ]
+            then
+                slay_slayer
+                wait $ioslay
+                if [ $# -gt 0 ]
+                then
+                    ioslay-firefox "$@" &
+                    ioslay=$!
+                    noticeLOG "Launched ioslay-firefox[$ioslay] $*"
+                fi
+            fi
+            lastargs=$*
+        fi
+    fi
+    sleep 1
+done
+slay_slayer