From f0b3a083d6ebf2080c85696b2867f019d9a97fa9 Mon Sep 17 00:00:00 2001
From: Konstantin Dmitriev <ksee.zelgadis@gmail.com>
Date: Mon, 27 Jul 2009 18:29:08 +0700
Subject: [PATCH] Forbid double run of synfigstudio-cph-monitor.

---
 synfig-studio/trunk/synfigstudio-cph-monitor | 25 +++++++++++++++++++++++--
 1 file changed, 23 insertions(+), 2 deletions(-)

diff --git a/synfig-studio/trunk/synfigstudio-cph-monitor b/synfig-studio/trunk/synfigstudio-cph-monitor
index 000b83a..7ca8461 100755
--- a/synfig-studio/trunk/synfigstudio-cph-monitor
+++ b/synfig-studio/trunk/synfigstudio-cph-monitor
@@ -17,10 +17,9 @@ trap writelog INT
 
 init()
 {
-echo "Synfig Crash Monitor is a tool to collect statistics about synfig crashes."
+echo "SynfigStudio Crash Monitor is a tool to collect statistics about synfig crashes."
 echo "All information is collected locally in ~/.synfig/cph directory."
 echo
-echo `date +%H:%M` "Synfig Crash Monitor started."
 STARTED=0
 RUNTIME=0
 VERSION=''
@@ -29,6 +28,27 @@ BRANCH=''
 REVISION_ID=''
 CRASH=0
 [ ! -d ~/.synfig/cph ] && mkdir -p ~/.synfig/cph || true
+
+# Detect if crash monitor is already started
+PDIR=${0%`basename $0`}
+LCK_FILE=~/.synfig/cph/`basename $0`.lck
+if [ -f "${LCK_FILE}" ]; then
+	MYPID=`head -n 1 "${LCK_FILE}"`
+	if ! ( ps -p ${MYPID} | grep ${MYPID} >/dev/null ); then
+		# The process is not running
+		# Echo current PID into lock file
+		echo $$ > "${LCK_FILE}"
+	else
+		echo "`basename $0` is already running [${MYPID}]. Aborting."
+		sleep 5
+		exit 0
+	fi
+else
+	# The process is not running
+	# Echo current PID into lock file
+	echo $$ > "${LCK_FILE}"
+fi
+echo `date +%H:%M` "Synfig Crash Monitor started."
 }
 
 writelog()
@@ -143,5 +163,6 @@ mainloop()
 	done
 }
 
+
 init
 mainloop
-- 
2.7.4