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vnc update fix 

We need to remember has_updates for each vnc client.  Otherwise it might
happen that vnc_update_client(has_dirty=1) takes the first exit due to
output buffers not being flushed yet and subsequent calls with
has_dirty=0 take the second exit, wrongly assuming there is nothing to
do because the work defered in the first call is ignored.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Peter Lieven <pl@kamp.de>
This commit is contained in:
Gerd Hoffmann 2014-07-23 11:52:02 +02:00
parent 07535a8902
commit 6365828003
2 changed files with 4 additions and 1 deletions
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4
ui/vnc.c
View File

@ -887,6 +887,7 @@ static int find_and_clear_dirty_height(struct VncState *vs,
static int vnc_update_client(VncState *vs, int has_dirty, bool sync)
{
vs->has_dirty += has_dirty;
if (vs->need_update && vs->csock != -1) {
VncDisplay *vd = vs->vd;
VncJob *job;
@ -898,7 +899,7 @@ static int vnc_update_client(VncState *vs, int has_dirty, bool sync)
/* kernel send buffers are full -> drop frames to throttle */
return 0;
if (!has_dirty && !vs->audio_cap && !vs->force_update)
if (!vs->has_dirty && !vs->audio_cap && !vs->force_update)
return 0;
/*
@ -941,6 +942,7 @@ static int vnc_update_client(VncState *vs, int has_dirty, bool sync)
vnc_jobs_join(vs);
}
vs->force_update = 0;
vs->has_dirty = 0;
return n;
}

1
ui/vnc.h
View File

@ -263,6 +263,7 @@ struct VncState
VncDisplay *vd;
int need_update;
int force_update;
int has_dirty;
uint32_t features;
int absolute;
int last_x;