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xfree86: don't call xalloc from signal handlers when posting events.

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Reviewed-by: Peter Hutterer <peter@cs.unisa.edu.au>
This commit is contained in:
Matthieu Herrb 2008-02-01 14:13:29 +10:30 committed by Peter Hutterer
parent 1692dcf197
commit c68f063be6
1 changed files with 33 additions and 36 deletions
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69
hw/xfree86/common/xf86Xinput.c
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@ -133,6 +133,11 @@ xf86ProcessCommonOptions(LocalDevicePtr local,
/* Backwards compatibility. */
local->history_size = GetMotionHistorySize();
/* Preallocate xEvent store */
if (!xf86Events)
xf86Events = (xEvent *)xcalloc(sizeof(xEvent), GetMaximumEventsNum());
if (!xf86Events)
FatalError("Couldn't allocate event store\n");
}
/***********************************************************************
@ -461,6 +466,8 @@ DeleteInputDeviceRequest(DeviceIntPtr pDev)
* convenient functions to post events
*/
#define MAX_VALUATORS 36 /* XXX from comment in dix/getevents.c */
_X_EXPORT void
xf86PostMotionEvent(DeviceIntPtr device,
int is_absolute,
@ -470,17 +477,12 @@ xf86PostMotionEvent(DeviceIntPtr device,
{
va_list var;
int i = 0;
static int *valuators = NULL;
static int n_valuators = 0;
static int valuators[MAX_VALUATORS];
if (num_valuators > n_valuators) {
xfree (valuators);
valuators = NULL;
}
if (!valuators) {
valuators = xcalloc(sizeof(int), num_valuators);
n_valuators = num_valuators;
if (num_valuators > MAX_VALUATORS) {
xf86Msg(X_ERROR, "xf86PostMotionEvent: num_valuator %d"
" is greater than MAX_VALUATORS\n", num_valuators);
return;
}
va_start(var, num_valuators);
@ -529,9 +531,7 @@ xf86PostMotionEventP(DeviceIntPtr device,
#endif
if (!xf86Events)
xf86Events = (xEvent *)xcalloc(sizeof(xEvent), GetMaximumEventsNum());
if (!xf86Events)
FatalError("Couldn't allocate event store\n");
FatalError("Didn't allocate event store\n");
nevents = GetPointerEvents(xf86Events, device, MotionNotify, 0,
flags, first_valuator, num_valuators,
@ -555,9 +555,15 @@ xf86PostProximityEvent(DeviceIntPtr device,
...)
{
va_list var;
int i, nevents, *valuators = NULL;
int i, nevents;
int valuators[MAX_VALUATORS];
valuators = xcalloc(sizeof(int), num_valuators);
if (num_valuators > MAX_VALUATORS) {
xf86Msg(X_ERROR, "xf86PostMotionEvent: num_valuator %d"
" is greater than MAX_VALUATORS\n", num_valuators);
return;
}
va_start(var, num_valuators);
for (i = 0; i < num_valuators; i++)
@ -565,9 +571,7 @@ xf86PostProximityEvent(DeviceIntPtr device,
va_end(var);
if (!xf86Events)
xf86Events = (xEvent *)xcalloc(sizeof(xEvent), GetMaximumEventsNum());
if (!xf86Events)
FatalError("Couldn't allocate event store\n");
FatalError("Didn't allocate event store\n");
nevents = GetProximityEvents(xf86Events, device,
is_in ? ProximityIn : ProximityOut,
@ -575,7 +579,6 @@ xf86PostProximityEvent(DeviceIntPtr device,
for (i = 0; i < nevents; i++)
mieqEnqueue(device, xf86Events + i);
xfree(valuators);
}
_X_EXPORT void
@ -588,7 +591,7 @@ xf86PostButtonEvent(DeviceIntPtr device,
...)
{
va_list var;
int *valuators = NULL;
int valuators[MAX_VALUATORS];
int i = 0, nevents = 0;
int index;
@ -599,18 +602,19 @@ xf86PostButtonEvent(DeviceIntPtr device,
return;
}
#endif
if (num_valuators > MAX_VALUATORS) {
xf86Msg(X_ERROR, "xf86PostMotionEvent: num_valuator %d"
" is greater than MAX_VALUATORS\n", num_valuators);
return;
}
valuators = xcalloc(sizeof(int), num_valuators);
va_start(var, num_valuators);
for (i = 0; i < num_valuators; i++)
valuators[i] = va_arg(var, int);
va_end(var);
if (!xf86Events)
xf86Events = (xEvent *)xcalloc(sizeof(xEvent), GetMaximumEventsNum());
if (!xf86Events)
FatalError("Couldn't allocate event store\n");
FatalError("Didn't allocate event store\n");
nevents = GetPointerEvents(xf86Events, device,
is_down ? ButtonPress : ButtonRelease, button,
@ -620,8 +624,6 @@ xf86PostButtonEvent(DeviceIntPtr device,
for (i = 0; i < nevents; i++)
mieqEnqueue(device, xf86Events + i);
xfree(valuators);
}
_X_EXPORT void
@ -634,7 +636,8 @@ xf86PostKeyEvent(DeviceIntPtr device,
...)
{
va_list var;
int i = 0, nevents = 0, *valuators = NULL;
int i = 0, nevents = 0;
static int valuators[MAX_VALUATORS];
/* instil confidence in the user */
DebugF("this function has never been tested properly. if things go quite "
@ -642,12 +645,9 @@ xf86PostKeyEvent(DeviceIntPtr device,
"broken.\n");
if (!xf86Events)
xf86Events = (xEvent *)xcalloc(sizeof(xEvent), GetMaximumEventsNum());
if (!xf86Events)
FatalError("Couldn't allocate event store\n");
FatalError("Didn't allocate event store\n");
if (is_absolute) {
valuators = xcalloc(sizeof(int), num_valuators);
va_start(var, num_valuators);
for (i = 0; i < num_valuators; i++)
valuators[i] = va_arg(var, int);
@ -657,7 +657,6 @@ xf86PostKeyEvent(DeviceIntPtr device,
is_down ? KeyPress : KeyRelease,
key_code, first_valuator,
num_valuators, valuators);
xfree(valuators);
}
else {
nevents = GetKeyboardEvents(xf86Events, device,
@ -686,9 +685,7 @@ xf86PostKeyboardEvent(DeviceIntPtr device,
#endif
if (!xf86Events)
xf86Events = (xEvent *)xcalloc(sizeof(xEvent), GetMaximumEventsNum());
if (!xf86Events)
FatalError("Couldn't allocate event store\n");
FatalError("Didn't allocate event store\n");
nevents = GetKeyboardEvents(xf86Events, device,
is_down ? KeyPress : KeyRelease, key_code);