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GKVE/GPE: have DDX allocate events 

Don't allocate events on every GKE/GKVE/GPE call, just have the DDX manage
it instead.  Introduce GetMaximumEventsNum(), which is the maximum number
of events these functions will ever produce.
This commit is contained in:
Daniel Stone 2006-08-10 14:00:14 +03:00 committed by Daniel Stone
parent 5506b4ad20
commit 539d1f3347
4 changed files with 118 additions and 99 deletions
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107
dix/events.c
View File

@ -4658,22 +4658,39 @@ WriteEventsToClient(ClientPtr pClient, int count, xEvent *events)
}
}
/* Maximum number of valuators, divided by six, rounded up. */
#define MAX_VALUATOR_EVENTS 6
/**
* Returns the maximum number of events GetKeyboardEvents,
* GetKeyboardValuatorEvents, and GetPointerEvents will ever return.
*
* Should be used in DIX as:
* xEvent *events = xcalloc(sizeof(xEvent), GetMaximumEventsNum());
*/
int
GetMaximumEventsNum() {
/* Two base events -- core and device, plus valuator events. Multiply
* by two if we're doing key repeats. */
return 2 * (2 + MAX_VALUATOR_EVENTS);
}
/**
* Convenience wrapper around GetKeyboardValuatorEvents, that takes no
* valuators.
*/
int
GetKeyboardEvents(xEvent **xE, DeviceIntPtr pDev, int type, int key_code) {
return GetKeyboardValuatorEvents(xE, pDev, type, key_code, 0, NULL);
GetKeyboardEvents(xEvent *events, DeviceIntPtr pDev, int type, int key_code) {
return GetKeyboardValuatorEvents(events, pDev, type, key_code, 0, NULL);
}
/**
* Returns a set of keyboard events for KeyPress/KeyRelease, optionally
* also with valuator events. Handles Xi and XKB.
*
* xE will be set to an array of events, which must be freed by the user;
* the return value is the number of events in xE, which is not
* NULL-terminated.
* events is not NULL-terminated; the return value is the number of events.
* The DDX is responsible for allocating the event structure in the first
* place via GetMaximumEventsNum(), and for freeing it.
*
* If pDev is set to send core events, then the keymap on the core
* keyboard will be pivoted to that of the new keyboard and the appropriate
@ -4683,18 +4700,21 @@ GetKeyboardEvents(xEvent **xE, DeviceIntPtr pDev, int type, int key_code) {
* key press will trigger a matching KeyRelease, as well as the
* KeyPresses.
*/
int GetKeyboardValuatorEvents(xEvent **xE, DeviceIntPtr pDev, int type,
int GetKeyboardValuatorEvents(xEvent *events, DeviceIntPtr pDev, int type,
int key_code, int num_valuators,
int *valuators) {
int numEvents = 0, numRepeatEvents = 0, ms = 0, first_valuator = 0, i = 0;
deviceKeyButtonPointer *kbp = NULL;
deviceValuator *xv = NULL;
xEvent *ev = NULL, *repeatEvents = NULL;
xEvent *repeatEvents = NULL;
KeyClassPtr ckeyc;
#ifdef XKB
xkbMapNotify mn;
#endif
if (!events)
return 0;
if (type != KeyPress && type != KeyRelease)
return 0;
@ -4707,8 +4727,11 @@ int GetKeyboardValuatorEvents(xEvent **xE, DeviceIntPtr pDev, int type,
else
numEvents = 1;
if (num_valuators)
numEvents += (num_valuators % 6) + 1;
if (num_valuators) {
if ((num_valuators / 6) + 1 > MAX_VALUATOR_EVENTS)
num_valuators = MAX_VALUATOR_EVENTS;
numEvents += (num_valuators / 6) + 1;
}
/* Handle core repeating, via press/release/press/release.
* FIXME: In theory, if you're repeating with two keyboards,
@ -4724,26 +4747,15 @@ int GetKeyboardValuatorEvents(xEvent **xE, DeviceIntPtr pDev, int type,
!(pDev->kbdfeed->ctrl.autoRepeats[key_code >> 3]
& (1 << (key_code & 7))))
return 0;
numEvents += GetKeyboardValuatorEvents(&repeatEvents, pDev,
numEvents += GetKeyboardValuatorEvents(events, pDev,
KeyRelease, key_code,
num_valuators, valuators);
events += numEvents;
}
ev = (xEvent *)xcalloc(sizeof(xEvent), numEvents);
if (!ev)
return 0;
if (repeatEvents) {
for (i = 0; i < numRepeatEvents; i++) {
ev = repeatEvents++;
ev++;
}
}
*xE = ev;
ms = GetTimeInMillis();
kbp = (deviceKeyButtonPointer *) ev;
kbp = (deviceKeyButtonPointer *) events;
kbp->time = ms;
kbp->deviceid = pDev->id;
if (type == KeyPress)
@ -4754,7 +4766,7 @@ int GetKeyboardValuatorEvents(xEvent **xE, DeviceIntPtr pDev, int type,
if (num_valuators) {
kbp->deviceid |= MORE_EVENTS;
while (first_valuator < num_valuators) {
xv = (deviceValuator *) ++ev;
xv = (deviceValuator *) ++events;
xv->type = DeviceValuator;
xv->first_valuator = first_valuator;
xv->num_valuators = num_valuators;
@ -4781,10 +4793,10 @@ int GetKeyboardValuatorEvents(xEvent **xE, DeviceIntPtr pDev, int type,
}
if (pDev->coreEvents) {
ev++;
ev->u.keyButtonPointer.time = ms;
ev->u.u.type = type;
ev->u.u.detail = key_code;
events++;
events->u.keyButtonPointer.time = ms;
events->u.u.type = type;
events->u.u.detail = key_code;
if (inputInfo.keyboard->devPrivates[CoreDevicePrivatesIndex].ptr !=
pDev) {
@ -4796,8 +4808,6 @@ int GetKeyboardValuatorEvents(xEvent **xE, DeviceIntPtr pDev, int type,
memcpy(ckeyc->modifierKeyMap, pDev->key->modifierKeyMap,
(8 * pDev->key->maxKeysPerModifier));
ckeyc->maxKeysPerModifier = pDev->key->maxKeysPerModifier;
ckeyc->curKeySyms.map = NULL;
ckeyc->curKeySyms.mapWidth = 0;
ckeyc->curKeySyms.minKeyCode = pDev->key->curKeySyms.minKeyCode;
ckeyc->curKeySyms.maxKeyCode = pDev->key->curKeySyms.maxKeyCode;
SetKeySymsMap(&ckeyc->curKeySyms, &pDev->key->curKeySyms);
@ -4911,13 +4921,14 @@ acceleratePointer(DeviceIntPtr pDev, int num_valuators, int *valuators)
* Generate a series of xEvents (returned in xE) representing pointer
* motion, or button presses. Xi and XKB-aware.
*
* xE is not NULL-terminated; the return value is the number of events.
* The user is responsible for freeing these events.
* events is not NULL-terminated; the return value is the number of events.
* The DDX is responsible for allocating the event structure in the first
* place via GetMaximumEventsNum(), and for freeing it.
*/
int
GetPointerEvents(xEvent **xE, DeviceIntPtr pDev, int type, int buttons,
GetPointerEvents(xEvent *events, DeviceIntPtr pDev, int type, int buttons,
int flags, int num_valuators, int *valuators) {
int numEvents, ms, first_valuator = 0;
int numEvents = 0, ms = 0, first_valuator = 0;
deviceKeyButtonPointer *kbp = NULL;
deviceValuator *xv = NULL;
AxisInfoPtr axes = NULL;
@ -4942,20 +4953,18 @@ GetPointerEvents(xEvent **xE, DeviceIntPtr pDev, int type, int buttons,
numEvents = 1;
if (type == MotionNotify) {
if (num_valuators > 2)
if (num_valuators > 2) {
if (((num_valuators / 6) + 1) > MAX_VALUATOR_EVENTS)
num_valuators = MAX_VALUATOR_EVENTS;
numEvents += (num_valuators / 6) + 1;
}
else if (num_valuators < 2)
return 0;
}
ev = (xEvent *)xcalloc(sizeof(xEvent), numEvents);
if (!ev)
return 0;
*xE = ev;
ms = GetTimeInMillis();
kbp = (deviceKeyButtonPointer *) ev;
kbp = (deviceKeyButtonPointer *) events;
kbp->time = ms;
kbp->deviceid = pDev->id;
@ -5053,7 +5062,7 @@ GetPointerEvents(xEvent **xE, DeviceIntPtr pDev, int type, int buttons,
flags & POINTER_ABSOLUTE)) {
kbp->deviceid |= MORE_EVENTS;
while (first_valuator < num_valuators) {
xv = (deviceValuator *) ++ev;
xv = (deviceValuator *) ++events;
xv->type = DeviceValuator;
xv->first_valuator = first_valuator;
xv->num_valuators = num_valuators;
@ -5086,11 +5095,11 @@ GetPointerEvents(xEvent **xE, DeviceIntPtr pDev, int type, int buttons,
}
if (pDev->coreEvents) {
ev++;
ev->u.u.type = type;
ev->u.keyButtonPointer.time = ms;
ev->u.keyButtonPointer.rootX = kbp->root_x;
ev->u.keyButtonPointer.rootY = kbp->root_y;
events++;
events->u.u.type = type;
events->u.keyButtonPointer.time = ms;
events->u.keyButtonPointer.rootX = kbp->root_x;
events->u.keyButtonPointer.rootY = kbp->root_y;
cp->valuator->lastx = kbp->root_x;
cp->valuator->lasty = kbp->root_y;
#ifdef DEBUG
@ -5101,10 +5110,10 @@ GetPointerEvents(xEvent **xE, DeviceIntPtr pDev, int type, int buttons,
ErrorF("GPE: core detail is %d\n", buttons);
#endif
/* Core buttons remapping shouldn't be transitive. */
ev->u.u.detail = pDev->button->map[buttons];
events->u.u.detail = pDev->button->map[buttons];
}
else {
ev->u.u.detail = 0;
events->u.u.detail = 0;
}
if (inputInfo.pointer->devPrivates[CoreDevicePrivatesIndex].ptr !=

27
hw/kdrive/src/kinput.c
View File

@ -69,6 +69,8 @@ static struct KdConfigDevice *kdConfigPointers = NULL;
static KdKeyboardDriver *kdKeyboardDrivers = NULL;
static KdPointerDriver *kdPointerDrivers = NULL;
static xEvent *kdEvents = NULL;
static Bool kdInputEnabled;
static Bool kdOffScreen;
static unsigned long kdOffScreenTime;
@ -1271,6 +1273,11 @@ KdInitInput (void)
ErrorF("Failed to add keyboard!\n");
}
if (!kdEvents)
kdEvents = (xEvent *)xcalloc(sizeof(xEvent), GetMaximumEventsNum());
if (!kdEvents)
FatalError("Couldn't allocate event buffer\n");
mieqInit();
}
@ -1849,7 +1856,6 @@ KdHandleKeyboardEvent (KdKeyboardInfo *ki, int type, int key)
void
KdReleaseAllKeys (void)
{
xEvent *xE;
int key, nEvents, i;
KdKeyboardInfo *ki;
@ -1860,9 +1866,9 @@ KdReleaseAllKeys (void)
key++) {
if (IsKeyDown(ki, key)) {
KdHandleKeyboardEvent(ki, KeyRelease, key);
nEvents = GetKeyboardEvents(&xE, ki->dixdev, KeyRelease, key);
nEvents = GetKeyboardEvents(kdEvents, ki->dixdev, KeyRelease, key);
for (i = 0; i < nEvents; i++)
KdQueueEvent (xE++);
KdQueueEvent (kdEvents + i);
}
}
}
@ -1897,7 +1903,6 @@ KdEnqueueKeyboardEvent(KdKeyboardInfo *ki,
KeyClassPtr keyc = NULL;
KeybdCtrl *ctrl = NULL;
int type, nEvents, i;
xEvent *xE = NULL;
#ifdef DEBUG
ErrorF("enqueuing kb event (scancode %d, %s)\n", scan_code, is_up ? "up" : "down");
@ -1939,12 +1944,12 @@ KdEnqueueKeyboardEvent(KdKeyboardInfo *ki,
KdCheckSpecialKeys(ki, type, key_code);
KdHandleKeyboardEvent(ki, type, key_code);
nEvents = GetKeyboardEvents(&xE, ki->dixdev, type, key_code);
nEvents = GetKeyboardEvents(kdEvents, ki->dixdev, type, key_code);
#ifdef DEBUG
ErrorF("KdEnqueueKeyboardEvent: got %d events from GKE\n", nEvents);
#endif
for (i = 0; i < nEvents; i++)
KdQueueEvent(xE++);
KdQueueEvent(kdEvents + i);
}
else {
ErrorF("driver %s wanted to post scancode %d outside of [%d, %d]!\n",
@ -2047,8 +2052,7 @@ void
_KdEnqueuePointerEvent (KdPointerInfo *pi, int type, int x, int y, int z,
int b, int absrel, Bool force)
{
xEvent *xE = NULL;
int n = 0, i = 0;
int nEvents = 0, i = 0;
int valuators[3] = { x, y, z };
#ifdef DEBUG
@ -2060,9 +2064,10 @@ _KdEnqueuePointerEvent (KdPointerInfo *pi, int type, int x, int y, int z,
if (!force && KdHandlePointerEvent(pi, type, x, y, z, b, absrel))
return;
n = GetPointerEvents(&xE, pi->dixdev, type, b, absrel, 3, valuators);
for (i = 0; i < n; i++)
KdQueueEvent(xE++);
nEvents = GetPointerEvents(kdEvents, pi->dixdev, type, b, absrel, 3,
valuators);
for (i = 0; i < nEvents; i++)
KdQueueEvent(kdEvents + i);
}
void

75
hw/xfree86/common/xf86Xinput.c
View File

@ -108,6 +108,8 @@ static int debug_level = 0;
#define DBG(lvl, f)
#endif
static xEvent *xf86Events = NULL;
static Bool
xf86SendDragEvents(DeviceIntPtr device)
{
@ -639,7 +641,6 @@ xf86PostMotionEvent(DeviceIntPtr device,
int i = 0, nevents = 0;
Bool drag = xf86SendDragEvents(device);
LocalDevicePtr local = (LocalDevicePtr) device->public.devicePrivate;
xEvent *events = NULL;
int *valuators = NULL;
int flags = 0;
@ -662,15 +663,16 @@ xf86PostMotionEvent(DeviceIntPtr device,
#endif
}
nevents = GetPointerEvents(&events, device, MotionNotify, 0,
if (!xf86Events)
xf86Events = (xEvent *)xcalloc(sizeof(xEvent), GetMaximumEventsNum());
if (!xf86Events)
FatalError("Couldn't allocate event store\n");
nevents = GetPointerEvents(xf86Events, device, MotionNotify, 0,
flags, num_valuators, valuators);
for (i = 0; i < nevents; i++) {
if (events->u.keyButtonPointer.time > xf86Info.lastEventTime)
xf86Info.lastEventTime = events->u.keyButtonPointer.time;
mieqEnqueue(events + i);
}
xfree(events);
for (i = 0; i < nevents; i++)
mieqEnqueue(xf86Events + i);
#if 0
if (HAS_MOTION_HISTORY(local)) {
@ -791,7 +793,6 @@ xf86PostButtonEvent(DeviceIntPtr device,
va_list var;
int *valuators = NULL;
int i = 0, nevents = 0;
xEvent *events = NULL;
#ifdef DEBUG
ErrorF("xf86PostButtonEvent BEGIN 0x%x(%s) button=%d down=%s is_absolute=%s\n",
@ -810,18 +811,19 @@ xf86PostButtonEvent(DeviceIntPtr device,
valuators[i] = va_arg(var, int);
}
nevents = GetPointerEvents(&events, device,
if (!xf86Events)
xf86Events = (xEvent *)xcalloc(sizeof(xEvent), GetMaximumEventsNum());
if (!xf86Events)
FatalError("Couldn't allocate event store\n");
nevents = GetPointerEvents(xf86Events, device,
is_down ? ButtonPress : ButtonRelease, button,
is_absolute ? POINTER_ABSOLUTE :
POINTER_RELATIVE,
num_valuators, valuators);
for (i = 0; i < nevents; i++) {
if (events->u.keyButtonPointer.time > xf86Info.lastEventTime)
xf86Info.lastEventTime = events->u.keyButtonPointer.time;
mieqEnqueue(events + i);
}
xfree(events);
for (i = 0; i < nevents; i++)
mieqEnqueue(xf86Events + i);
}
_X_EXPORT void
@ -835,38 +837,39 @@ xf86PostKeyEvent(DeviceIntPtr device,
{
va_list var;
int i = 0, nevents = 0, *valuators = NULL;
xEvent *events = NULL;
/* instil confidence in the user */
ErrorF("this function has never been tested properly. if things go quite "
"badly south after this message, then xf86PostKeyEvent is "
"broken.\n");
if (!xf86Events)
xf86Events = (xEvent *)xcalloc(sizeof(xEvent), GetMaximumEventsNum());
if (!xf86Events)
FatalError("Couldn't allocate event store\n");
/* the spec says that dkp/dkr events should only get valuators in
* absolute mode. the spec knows all. BOW BEFORE etc. */
if (is_absolute) {
nevents = GetKeyboardValuatorEvents(&events, device,
is_down ? KeyPress : KeyRelease,
key_code, num_valuators,
valuators);
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);
nevents = GetKeyboardValuatorEvents(xf86Events, device,
is_down ? KeyPress : KeyRelease,
key_code, num_valuators,
valuators);
}
else {
nevents = GetKeyboardEvents(&events, device,
nevents = GetKeyboardEvents(xf86Events, device,
is_down ? KeyPress : KeyRelease,
key_code);
}
for (i = 0; i < nevents; i++) {
if (events->u.keyButtonPointer.time > xf86Info.lastEventTime)
xf86Info.lastEventTime = events->u.keyButtonPointer.time;
mieqEnqueue(events + i);
}
xfree(events);
for (i = 0; i < nevents; i++)
mieqEnqueue(xf86Events + i);
}
_X_EXPORT void
@ -874,7 +877,6 @@ xf86PostKeyboardEvent(DeviceIntPtr device,
unsigned int key_code,
int is_down)
{
xEvent *events = NULL;
int nevents = 0, i = 0;
#ifdef DEBUG
@ -882,15 +884,16 @@ xf86PostKeyboardEvent(DeviceIntPtr device,
is_down ? "down" : "up", device->id);
#endif
nevents = GetKeyboardEvents(&events, device,
if (!xf86Events)
xf86Events = (xEvent *)xcalloc(sizeof(xEvent), GetMaximumEventsNum());
if (!xf86Events)
FatalError("Couldn't allocate event store\n");
nevents = GetKeyboardEvents(xf86Events, device,
is_down ? KeyPress : KeyRelease, key_code);
for (i = 0; i < nevents; i++) {
if (events->u.keyButtonPointer.time > xf86Info.lastEventTime)
xf86Info.lastEventTime = events->u.keyButtonPointer.time;
mieqEnqueue(events + i);
}
xfree(events);
for (i = 0; i < nevents; i++)
mieqEnqueue(xf86Events + i);
}
/*

8
include/input.h
View File

@ -377,8 +377,10 @@ extern void InitInput(
int /*argc*/,
char ** /*argv*/);
extern int GetMaximumEventsNum(void);
extern int GetPointerEvents(
xEvent **xE,
xEvent *events,
DeviceIntPtr pDev,
int type,
int buttons,
@ -387,13 +389,13 @@ extern int GetPointerEvents(
int *valuators);
extern int GetKeyboardEvents(
xEvent **xE,
xEvent *events,
DeviceIntPtr pDev,
int type,
int key_code);
extern int GetKeyboardValuatorEvents(
xEvent **xE,
xEvent *events,
DeviceIntPtr pDev,
int type,
int key_code,