andreacavalli/xserver-multidpi
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mi: Only increment tail (push) when the event data is actually in the queue

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Signed-off-by: Jeremy Huddleston <jeremyhu@apple.com>
Signed-off-by: Tiago Vignatti <vignatti@c3sl.ufpr.br>
Signed-off-by: Peter Hutterer <peter.hutterer@redhat.com>
This commit is contained in:
Jeremy Huddleston 2008-11-19 10:54:57 -08:00
parent 570835b9a8
commit 56d1793c43
1 changed files with 3 additions and 4 deletions
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7
mi/mieq.c
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@ -122,7 +122,7 @@ mieqResizeEvents(int min_size)
void
mieqEnqueue(DeviceIntPtr pDev, xEvent *e)
{
unsigned int oldtail = miEventQueue.tail, newtail;
unsigned int oldtail = miEventQueue.tail;
EventListPtr evt;
int isMotion = 0;
int evlen;
@ -170,11 +170,10 @@ mieqEnqueue(DeviceIntPtr pDev, xEvent *e)
}
else {
static int stuck = 0;
newtail = (oldtail + 1) % QUEUE_SIZE;
/* Toss events which come in late. Usually this means your server's
* stuck in an infinite loop somewhere, but SIGIO is still getting
* handled. */
if (newtail == miEventQueue.head) {
if (((oldtail + 1) % QUEUE_SIZE) == miEventQueue.head) {
ErrorF("[mi] EQ overflowing. The server is probably stuck "
"in an infinite loop.\n");
if (!stuck) {
@ -184,7 +183,6 @@ mieqEnqueue(DeviceIntPtr pDev, xEvent *e)
return;
}
stuck = 0;
miEventQueue.tail = newtail;
}
evlen = sizeof(xEvent);
@ -218,6 +216,7 @@ mieqEnqueue(DeviceIntPtr pDev, xEvent *e)
miEventQueue.events[oldtail].pDev = pDev;
miEventQueue.lastMotion = isMotion;
miEventQueue.tail = (oldtail + 1) % QUEUE_SIZE;
}
void