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DRI2: throttle swaps at submission time too 

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@tuebingen.mpg.de>
Reviewed-by: Mario Kleiner <mario.kleiner@tuebingen.mpg.de>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
This commit is contained in:
Jesse Barnes 2010-03-08 12:39:54 -08:00
parent db1c7cb604
commit 0294ff2a5c
1 changed files with 7 additions and 0 deletions
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7
hw/xfree86/dri2/dri2ext.c
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@ -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);