mirror of https://github.com/vitalif/openscad
103 lines
2.4 KiB
Bash
Executable File
103 lines
2.4 KiB
Bash
Executable File
#!/bin/sh
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# Toggle the Virtual Framebuffer
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# If started, stop. If stopped, start.
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debug=
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start()
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{
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VFB_BINARY=
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if [ "`command -v Xvfb`" ]; then
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VFB_BINARY=Xvfb
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fi
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if [ "`command -v Xvnc`" ]; then
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VFB_BINARY=Xvnc
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fi
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if [ ! $VFB_BINARY ]; then
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echo "$0 Failed, cannot find Xvfb or Xvnc"
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echo "$0 Failed, cannot find Xvfb or Xvnc" > ./virtualfb.log
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exit 1
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fi
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VFB_DISPLAY=`echo | awk 'BEGIN{srand();} {printf ":%.0f", rand()*1000+100};'`
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if [ $debug ]; then
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echo debug VFB_DISPLAY $VFB_DISPLAY
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echo debug VFB_BINARY $VFB_BINARY
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fi
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$VFB_BINARY $VFB_DISPLAY -screen 0 800x600x24 > ./virtualfb1.log 2> ./virtualfb2.log &
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# on some systems $! gives us VFB_BINARY's PID, on others we have to subtract 1
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VFB_PID_MINUS0=$!
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VFB_PID_MINUS1=$(($VFB_PID_MINUS0 - 1))
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if [ "`ps cax | grep $VFB_PID_MINUS0 | grep $VFB_BINARY`" ]; then
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VFB_PID=$VFB_PID_MINUS0
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elif [ "`ps cax | grep $VFB_PID_MINUS1 | grep $VFB_BINARY`" ]; then
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VFB_PID=$VFB_PID_MINUS1
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else
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echo started $VFB_BINARY but cannot find process ID in process table
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echo please stop $VFB_BINARY manually
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VFB_PID=
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return
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fi
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echo $VFB_DISPLAY > ./virtualfb.DISPLAY
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echo $VFB_PID > ./virtualfb.PID
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echo "Started virtual fb, PID=$VFB_PID , DISPLAY=$VFB_DISPLAY"
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sleep 1
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}
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stop()
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{
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VFB_PID=`cat ./virtualfb.PID`
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VFB_DISPLAY=`cat ./virtualfb.DISPLAY`
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echo "Stopping virtual fb, PID was $VFB_PID, DISPLAY was $VFB_DISPLAY"
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kill $VFB_PID
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LOCKFILE=`echo "/tmp/.X"$VFB_DISPLAY"-lock"`
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if [ -e $LOCKFILE ]; then
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rm $LOCKFILE
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fi
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rm ./virtualfb.PID
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rm ./virtualfb.DISPLAY
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}
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isrunning()
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{
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isrunning_result=
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if [ -e ./virtualfb.PID ]; then
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if [ $debug ]; then echo "found PID file"; fi
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VFB_PID=`cat ./virtualfb.PID`
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if [ ! $VFB_PID ]; then
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echo ./virtualfb.PID contained invalid PID number
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return
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fi
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if [ $debug ]; then echo "PID from file:" $VFB_PID; fi
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PS_RESULT=`ps cax | awk ' { print $1 } '`
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GREP_RESULT=`echo $PS_RESULT | grep $VFB_PID`
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if [ $debug ]; then echo "grep ps result: " $GREP_RESULT; fi
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if [ "`ps cax | awk ' { print $1 } ' | grep ^$VFB_PID\$`" ]; then
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if [ $debug ]; then echo "found pid in process table."; fi
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isrunning_result=1
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else
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if [ $debug ]; then echo "did not find pid in process table."; fi
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fi
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fi
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}
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if [ "`echo $* | grep debug`" ]; then
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debug=1
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fi
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isrunning
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if [ $isrunning_result ]; then
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stop
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else
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start
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fi
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