[PATCH 10/12] DRI2: throttle swaps at submission time too

[Jesse Barnes]

We need to throttle swaps here in addition to when the context is made
current to avoid causing problems with clients that just swap.
Throttling here also ensures our swaps get ordered as long as we block
the client occasionally.

Reported-by: Mario Kleiner <mario.kleiner at tuebingen.mpg.de>
Signed-off-by: Jesse Barnes <jbarnes at virtuousgeek.org>
---
 hw/xfree86/dri2/dri2ext.c |    7 +++++++
 1 files changed, 7 insertions(+), 0 deletions(-)

diff --git a/hw/xfree86/dri2/dri2ext.c b/hw/xfree86/dri2/dri2ext.c
index 7a9f8ca..094d54d 100644
--- a/hw/xfree86/dri2/dri2ext.c
+++ b/hw/xfree86/dri2/dri2ext.c
@@ -384,6 +384,13 @@ ProcDRI2SwapBuffers(ClientPtr client)
 		       DixReadAccess | DixWriteAccess, &pDrawable, &status))
 	return status;
 
+    /*
+     * Ensures an out of control client can't exhaust our swap queue, and
+     * also orders swaps.
+     */
+    if (DRI2ThrottleClient(client, pDrawable))
+	return client->noClientException;
+
     target_msc = vals_to_card64(stuff->target_msc_lo, stuff->target_msc_hi);
     divisor = vals_to_card64(stuff->divisor_lo, stuff->divisor_hi);
     remainder = vals_to_card64(stuff->remainder_lo, stuff->remainder_hi);
-- 
1.6.6.1