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vnc: threaded VNC server

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Implement a threaded VNC server using the producer-consumer model.
The main thread will push encoding jobs (a list a rectangles to update)
in a queue, and the VNC worker thread will consume that queue and send
framebuffer updates to the output buffer.

The threaded VNC server can be enabled with ./configure --enable-vnc-thread.

If you don't want it, just use ./configure --disable-vnc-thread and a syncrhonous
queue of job will be used (which as exactly the same behavior as the old queue).
If you disable the VNC thread, all thread related code will not be built and there will
be no overhead.

Signed-off-by: Corentin Chary <corentincj@iksaif.net>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Corentin Chary 2010-07-07 20:58:02 +02:00 • committed by Anthony Liguori
parent 313b1d697d
commit bd023f953e
7 changed files with 682 additions and 26 deletions
Download patch file Download diff file Expand all files Collapse all files

13
configure vendored
View file

@ -270,6 +270,7 @@ vnc_tls=""
vnc_sasl=""
vnc_jpeg=""
vnc_png=""
vnc_thread=""
xen=""
linux_aio=""
attr=""
@ -585,6 +586,10 @@ for opt do
;;
--enable-vnc-png) vnc_png="yes"
;;
--disable-vnc-thread) vnc_thread="no"
;;
--enable-vnc-thread) vnc_thread="yes"
;;
--disable-slirp) slirp="no"
;;
--disable-uuid) uuid="no"
@ -839,6 +844,8 @@ echo " --disable-vnc-jpeg disable JPEG lossy compression for VNC server"
echo " --enable-vnc-jpeg enable JPEG lossy compression for VNC server"
echo " --disable-vnc-png disable PNG compression for VNC server"
echo " --enable-vnc-png enable PNG compression for VNC server"
echo " --disable-vnc-thread disable threaded VNC server"
echo " --enable-vnc-thread enable threaded VNC server"
echo " --disable-curses disable curses output"
echo " --enable-curses enable curses output"
echo " --disable-curl disable curl connectivity"
@ -2156,6 +2163,7 @@ echo "VNC TLS support $vnc_tls"
echo "VNC SASL support $vnc_sasl"
echo "VNC JPEG support $vnc_jpeg"
echo "VNC PNG support $vnc_png"
echo "VNC thread $vnc_thread"
if test -n "$sparc_cpu"; then
echo "Target Sparc Arch $sparc_cpu"
fi
@ -2301,6 +2309,10 @@ if test "$vnc_png" = "yes" ; then
echo "CONFIG_VNC_PNG=y" >> $config_host_mak
echo "VNC_PNG_CFLAGS=$vnc_png_cflags" >> $config_host_mak
fi
if test "$vnc_thread" = "yes" ; then
echo "CONFIG_VNC_THREAD=y" >> $config_host_mak
echo "CONFIG_THREAD=y" >> $config_host_mak
fi
if test "$fnmatch" = "yes" ; then
echo "CONFIG_FNMATCH=y" >> $config_host_mak
fi
@ -2377,6 +2389,7 @@ if test "$xen" = "yes" ; then
fi
if test "$io_thread" = "yes" ; then
echo "CONFIG_IOTHREAD=y" >> $config_host_mak
echo "CONFIG_THREAD=y" >> $config_host_mak
fi
if test "$linux_aio" = "yes" ; then
echo "CONFIG_LINUX_AIO=y" >> $config_host_mak