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/*
* Copyright © 2010 NVIDIA Corporation
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#ifdef HAVE_DIX_CONFIG_H
#include <dix-config.h>
#endif
#include "scrnintstr.h"
#include "misync.h"
#include "misyncstr.h"
static DevPrivateKeyRec syncScreenPrivateKeyRec;
static DevPrivateKey syncScreenPrivateKey = &syncScreenPrivateKeyRec;
#define SYNC_SCREEN_PRIV(pScreen) \
(SyncScreenPrivPtr) dixLookupPrivate(&pScreen->devPrivates, \
syncScreenPrivateKey)
typedef struct _syncScreenPriv {
/* Wrappable sync-specific screen functions */
SyncScreenFuncsRec funcs;
/* Wrapped screen functions */
CloseScreenProcPtr CloseScreen;
} SyncScreenPrivRec, *SyncScreenPrivPtr;
/* Default implementations of the sync screen functions */
void
miSyncScreenCreateFence(ScreenPtr pScreen, SyncFence * pFence,
Bool initially_triggered)
{
(void) pScreen;
pFence->triggered = initially_triggered;
}
void
miSyncScreenDestroyFence(ScreenPtr pScreen, SyncFence * pFence)
{
(void) pScreen;
(void) pFence;
}
/* Default implementations of the per-object functions */
static void
miSyncFenceSetTriggered(SyncFence * pFence)
{
pFence->triggered = TRUE;
}
static void
miSyncFenceReset(SyncFence * pFence)
{
pFence->triggered = FALSE;
}
static Bool
miSyncFenceCheckTriggered(SyncFence * pFence)
{
return pFence->triggered;
}
static void
miSyncFenceAddTrigger(SyncTrigger * pTrigger)
{
(void) pTrigger;
return;
}
static void
miSyncFenceDeleteTrigger(SyncTrigger * pTrigger)
{
(void) pTrigger;
return;
}
/* Machine independent portion of the fence sync object implementation */
void
miSyncInitFence(ScreenPtr pScreen, SyncFence * pFence, Bool initially_triggered)
{
SyncScreenPrivPtr pScreenPriv = SYNC_SCREEN_PRIV(pScreen);
static const SyncFenceFuncsRec miSyncFenceFuncs = {
&miSyncFenceSetTriggered,
&miSyncFenceReset,
&miSyncFenceCheckTriggered,
&miSyncFenceAddTrigger,
&miSyncFenceDeleteTrigger
};
pFence->pScreen = pScreen;
pFence->funcs = miSyncFenceFuncs;
pScreenPriv->funcs.CreateFence(pScreen, pFence, initially_triggered);
}
void
miSyncDestroyFence(SyncFence * pFence)
{
ScreenPtr pScreen = pFence->pScreen;
SyncScreenPrivPtr pScreenPriv = SYNC_SCREEN_PRIV(pScreen);
SyncTriggerList *ptl, *pNext;
pFence->sync.beingDestroyed = TRUE;
/* tell all the fence's triggers that the counter has been destroyed */
for (ptl = pFence->sync.pTriglist; ptl; ptl = pNext) {
(*ptl->pTrigger->CounterDestroyed) (ptl->pTrigger);
pNext = ptl->next;
free(ptl); /* destroy the trigger list as we go */
}
pScreenPriv->funcs.DestroyFence(pScreen, pFence);
dixFreeObjectWithPrivates(pFence, PRIVATE_SYNC_FENCE);
}
void
miSyncTriggerFence(SyncFence * pFence)
{
SyncTriggerList *ptl, *pNext;
CARD64 unused;
pFence->funcs.SetTriggered(pFence);
XSyncIntToValue(&unused, 0L);
/* run through triggers to see if any fired */
for (ptl = pFence->sync.pTriglist; ptl; ptl = pNext) {
pNext = ptl->next;
if ((*ptl->pTrigger->CheckTrigger) (ptl->pTrigger, unused))
(*ptl->pTrigger->TriggerFired) (ptl->pTrigger);
}
}
SyncScreenFuncsPtr
miSyncGetScreenFuncs(ScreenPtr pScreen)
{
SyncScreenPrivPtr pScreenPriv = SYNC_SCREEN_PRIV(pScreen);
return &pScreenPriv->funcs;
}
static Bool
SyncCloseScreen(ScreenPtr pScreen)
{
SyncScreenPrivPtr pScreenPriv = SYNC_SCREEN_PRIV(pScreen);
pScreen->CloseScreen = pScreenPriv->CloseScreen;
return (*pScreen->CloseScreen) (pScreen);
}
Bool
miSyncSetup(ScreenPtr pScreen)
{
SyncScreenPrivPtr pScreenPriv;
static const SyncScreenFuncsRec miSyncScreenFuncs = {
&miSyncScreenCreateFence,
&miSyncScreenDestroyFence
};
if (dixPrivateKeyRegistered(syncScreenPrivateKey))
return TRUE;
if (!dixRegisterPrivateKey(syncScreenPrivateKey, PRIVATE_SCREEN,
sizeof(SyncScreenPrivRec)))
return FALSE;
pScreenPriv = SYNC_SCREEN_PRIV(pScreen);
pScreenPriv->funcs = miSyncScreenFuncs;
/* Wrap CloseScreen to clean up */
pScreenPriv->CloseScreen = pScreen->CloseScreen;
pScreen->CloseScreen = SyncCloseScreen;
return TRUE;
}
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