diff options
Diffstat (limited to 'nx-X11/programs/Xserver/hw/nxagent/Split.c')
| -rw-r--r-- | nx-X11/programs/Xserver/hw/nxagent/Split.c | 1248 |
1 files changed, 1248 insertions, 0 deletions
diff --git a/nx-X11/programs/Xserver/hw/nxagent/Split.c b/nx-X11/programs/Xserver/hw/nxagent/Split.c new file mode 100644 index 000000000..8f1c65eba --- /dev/null +++ b/nx-X11/programs/Xserver/hw/nxagent/Split.c @@ -0,0 +1,1248 @@ +/**************************************************************************/ +/* */ +/* Copyright (c) 2001, 2007 NoMachine, http://www.nomachine.com/. */ +/* */ +/* NXAGENT, NX protocol compression and NX extensions to this software */ +/* are copyright of NoMachine. Redistribution and use of the present */ +/* software is allowed according to terms specified in the file LICENSE */ +/* which comes in the source distribution. */ +/* */ +/* Check http://www.nomachine.com/licensing.html for applicability. */ +/* */ +/* NX and NoMachine are trademarks of NoMachine S.r.l. */ +/* */ +/* All rights reserved. */ +/* */ +/**************************************************************************/ + +#include "scrnintstr.h" +#include "pixmapstr.h" +#include "windowstr.h" +#include "gcstruct.h" + +#include "Agent.h" +#include "Display.h" +#include "Drawable.h" +#include "Events.h" +#include "GCs.h" + +#include "NXlib.h" + + +/* + * Set here the required log level. + */ + +#define PANIC +#define WARNING +#undef TEST +#undef DEBUG + +/* + * This should be a macro but for now + * we make it a real function to log + * a warning in the logs. + */ + +DrawablePtr nxagentSplitDrawable(DrawablePtr pDrawable) +{ + if (pDrawable -> type == DRAWABLE_PIXMAP && + nxagentPixmapIsVirtual((PixmapPtr) pDrawable)) + { + #ifdef TEST + fprintf(stderr, "nxagentSplitDrawable: WARNING! The drawable at [%p] is " + "virtual. Assuming real at [%p].\n", (void *) pDrawable, + (void *) nxagentRealPixmap((PixmapPtr) pDrawable)); + #endif + + return (DrawablePtr) nxagentRealPixmap((PixmapPtr) pDrawable); + } + else + { + return pDrawable; + } +} + +void nxagentInitSplitResources() +{ + int resource; + + #ifdef TEST + fprintf(stderr, "nxagentInitSplitResources: Initializing the split resources.\n"); + #endif + + for (resource = 0; resource < NXNumberOfResources; resource++) + { + SplitResourcePtr pResource = &nxagentSplitResources[resource]; + + pResource -> pending = 0; + pResource -> commit = 0; + pResource -> split = NXNoResource; + pResource -> unpack = NXNoResource; + pResource -> drawable = NULL; + pResource -> region = NullRegion; + pResource -> gc = NULL; + } +} + +SplitResourcePtr nxagentAllocSplitResource() +{ + int resource; + + SplitResourcePtr pResource; + + for (;;) + { + resource = NXAllocSplit(nxagentDisplay, NXAnyResource); + + if (resource != NXNoResource) + { + #ifdef TEST + fprintf(stderr, "nxagentAllocSplitResource: Reserving resource [%d] for the next split.\n", + resource); + #endif + + break; + } + else + { + #ifdef PANIC + fprintf(stderr, "nxagentAllocSplitResource: PANIC! No more resources for the next split.\n"); + #endif +/* +FIXME: Must deal with the case all resources are exausted. +*/ + FatalError("nxagentAllocSplitResource: PANIC! No more resources for the next split.\n"); + } + } + + pResource = &nxagentSplitResources[resource]; + + if (pResource -> pending != 0 || pResource -> split != NXNoResource || + pResource -> unpack != NXNoResource || pResource -> drawable != NULL || + pResource -> region != NullRegion || pResource -> commit != 0 || + pResource -> gc != NULL) + { + /* + * This is really an unrecoverable error. + */ + + #ifdef PANIC + fprintf(stderr, "nxagentAllocSplitResource: PANIC! Invalid record for resource [%d] with " + "pending [%d] split [%d] unpack [%d] drawable [%p] region [%p] commit [%d] gc [%p].\n", + resource, pResource -> pending, pResource -> split, pResource -> unpack, + (void *) pResource -> drawable, (void *) pResource -> region, + pResource -> commit, (void *) pResource -> gc); + #endif + + FatalError("nxagentAllocSplitResource: PANIC! Invalid record for resource [%d] with " + "pending [%d] split [%d] unpack [%d] drawable [%p] region [%p] commit [%d] gc [%p].\n", + resource, pResource -> pending, pResource -> split, pResource -> unpack, + (void *) pResource -> drawable, (void *) pResource -> region, + pResource -> commit, (void *) pResource -> gc); + } + + pResource -> pending = 1; + pResource -> split = resource; + + return pResource; +} + +void nxagentFreeSplitResource(SplitResourcePtr pResource) +{ + if (pResource -> pending == 0 || pResource -> split == NXNoResource || + pResource -> drawable != NULL || pResource -> region != NullRegion || + pResource -> gc != NULL) + { + #ifdef PANIC + fprintf(stderr, "nxagentFreeSplitResource: PANIC! Invalid record provided with values " + "pending [%d] split [%d] unpack [%d] drawable [%p] region [%p] commit [%d] gc [%p].\n", + pResource -> pending, pResource -> split, pResource -> unpack, + (void *) pResource -> drawable, (void *) pResource -> region, + pResource -> commit, (void *) pResource -> gc); + #endif + + FatalError("nxagentFreeSplitResource: PANIC! Invalid record provided with values " + "pending [%d] split [%d] unpack [%d] drawable [%p] region [%p] commit [%d] gc [%p].\n", + pResource -> pending, pResource -> split, pResource -> unpack, + (void *) pResource -> drawable, (void *) pResource -> region, + pResource -> commit, (void *) pResource -> gc); + } + + #ifdef TEST + fprintf(stderr, "nxagentFreeSplitResource: Clearing the record for resource [%d].\n", + pResource -> split); + #endif + + NXFreeSplit(nxagentDisplay, pResource -> split); + + pResource -> pending = 0; + pResource -> commit = 0; + pResource -> split = NXNoResource; + pResource -> unpack = NXNoResource; + pResource -> drawable = NULL; + pResource -> region = NullRegion; + pResource -> gc = NULL; +} + +void nxagentInitUnpackResources() +{ +/* +FIXME: This must be implemented. +*/ +} + +UnpackResourcePtr nxagentAllocUnpackResource() +{ +/* +FIXME: This must be implemented. +*/ + return NULL; +} + +void nxagentFreeUnpackResource(UnpackResourcePtr pResource) +{ +/* +FIXME: This must be implemented. +*/ +} + +void nxagentReleaseAllSplits(void) +{ + int resource; + + #ifdef TEST + fprintf(stderr, "nxagentReleaseAllSplits: Going to release all the split resources.\n"); + #endif + + for (resource = 0; resource < NXNumberOfResources; resource++) + { + SplitResourcePtr pResource = &nxagentSplitResources[resource]; + + if (pResource != NULL && pResource -> pending == 1) + { + DrawablePtr pDrawable = pResource -> drawable; + + if (pDrawable != NULL) + { + #ifdef TEST + fprintf(stderr, "nxagentReleaseAllSplits: Releasing the drawable at [%p] for " + "resource [%d].\n", (void *) pDrawable, pResource -> split); + #endif + + nxagentReleaseSplit(pDrawable); + } + + #ifdef TEST + fprintf(stderr, "nxagentReleaseAllSplits: Freeing the resource [%d].\n", + resource); + #endif + + nxagentFreeSplitResource(pResource); + } + } +} + +/* + * Check the coherency of the split record. + */ + +#ifdef TEST + +static void nxagentCheckSplit(DrawablePtr pDrawable, SplitResourcePtr pResource) +{ + if (pResource == NULL) + { + #ifdef PANIC + fprintf(stderr, "nxagentCheckSplit: PANIC! No record associated to drawable at [%p].\n", + (void *) pDrawable); + #endif + + FatalError("nxagentCheckSplit: PANIC! No record associated to drawable at [%p].\n", + (void *) pDrawable); + } + else if (pResource -> drawable != pDrawable || + pResource -> split == NXNoResource) + { + #ifdef PANIC + fprintf(stderr, "nxagentCheckSplit: PANIC! The record [%d] doesn't match the drawable at [%p].\n", + pResource -> split, (void *) pDrawable); + #endif + + FatalError("nxagentCheckSplit: PANIC! The record [%d] doesn't match the drawable at [%p].\n", + pResource -> split, (void *) pDrawable); + } + else if (pResource -> commit == 1 && + pResource -> gc == NULL) + { + #ifdef PANIC + fprintf(stderr, "nxagentCheckSplit: PANIC! The record [%d] doesn't have a valid GC.\n", + pResource -> split); + #endif + + FatalError("nxagentCheckSplit: PANIC! The record [%d] doesn't have a valid GC.\n", + pResource -> split); + } +} + +static void nxagentCheckResource(SplitResourcePtr pResource, int resource) +{ + if (pResource == NULL) + { + #ifdef PANIC + fprintf(stderr, "nxagentCheckResource: PANIC! No record associated to resource [%d].\n", + resource); + #endif + + FatalError("nxagentCheckResource: PANIC! No record associated to resource [%d].\n", + resource); + } + else if ((pResource -> split != resource || pResource -> pending != 1) || + (pResource -> commit == 1 && (pResource -> drawable == NULL || + pResource -> gc == NULL))) + { + #ifdef PANIC + fprintf(stderr, "nxagentCheckResource: PANIC! Invalid record for resource [%d] with " + "pending [%d] split [%d] unpack [%d] drawable [%p] region [%p] commit [%d] gc [%p].\n", + resource, pResource -> pending, pResource -> split, pResource -> unpack, + (void *) pResource -> drawable, (void *) pResource -> region, + pResource -> commit, (void *) pResource -> gc); + #endif + + FatalError("nxagentCheckResource: PANIC! Invalid record for resource [%d] with " + "pending [%d] split [%d] unpack [%d] drawable [%p] region [%p] commit [%d] gc [%p].\n", + resource, pResource -> pending, pResource -> split, pResource -> unpack, + (void *) pResource -> drawable, (void *) pResource -> region, + pResource -> commit, (void *) pResource -> gc); + } +} + +#endif + +int nxagentCreateSplit(DrawablePtr pDrawable, GCPtr *pGC) +{ + SplitResourcePtr pResource; + + pDrawable = nxagentSplitDrawable(pDrawable); + + pResource = nxagentAllocSplitResource(); + + if (pDrawable -> type == DRAWABLE_PIXMAP) + { + nxagentPixmapPriv((PixmapPtr) pDrawable) -> splitResource = pResource; + } + else + { + nxagentWindowPriv((WindowPtr) pDrawable) -> splitResource = pResource; + } + + pResource -> drawable = pDrawable; + pResource -> commit = 1; + + /* + * Make a copy of the GC so the client + * can safely remove it. + */ + + pResource -> gc = CreateScratchGC(pDrawable -> pScreen, pDrawable -> depth); + +/* +FIXME: What do we do here? +*/ + if (pResource -> gc == NULL) + { + #ifdef PANIC + fprintf(stderr, "nxagentCreateSplit: PANIC! Failed to create split GC for resource [%d].\n", + pResource -> split); + #endif + + FatalError("nxagentCreateSplit: PANIC! Failed to create split GC for resource [%d].\n", + pResource -> split); + } + else if (CopyGC(*pGC, pResource -> gc, GCFunction | GCPlaneMask | + GCSubwindowMode | GCClipXOrigin | GCClipYOrigin | + GCClipMask | GCForeground | GCBackground) != Success) + { +/* +FIXME: What do we do here? +*/ + #ifdef PANIC + fprintf(stderr, "nxagentCreateSplit: PANIC! Failed to copy split GC for resource [%d].\n", + pResource -> split); + #endif + + FatalError("nxagentCreateSplit: PANIC! Failed to copy split GC for resource [%d].\n", + pResource -> split); + } + + #ifdef TEST + fprintf(stderr, "nxagentCreateSplit: Associated GC at [%p] to resource [%d] " + "with id [%lu].\n", (void *) pResource -> gc, pResource -> split, + (unsigned long) nxagentGC(pResource -> gc)); + #endif + + *pGC = pResource -> gc; + + #ifdef TEST + fprintf(stderr, "nxagentCreateSplit: Associated resource [%d] to drawable at [%p].\n", + pResource -> split, (void *) pResource -> drawable); + #endif + + return pResource -> split; +} + +/* + * Set the region to be the current + * streaming region. + */ + +void nxagentRegionSplit(DrawablePtr pDrawable, RegionPtr pRegion) +{ + SplitResourcePtr pResource; + + pDrawable = nxagentSplitDrawable(pDrawable); + + pResource = nxagentSplitResource(pDrawable); + + #ifdef TEST + + fprintf(stderr, "nxagentRegionSplit: Associating region to resource [%d] drawable at [%p].\n", + pResource -> split, (void *) pDrawable); + + nxagentCheckSplit(pDrawable, pResource); + + #endif + + if (pResource == NULL) + { + #ifdef PANIC + fprintf(stderr, "nxagentRegionSplit: PANIC! No valid split record for drawable at [%p].\n", + (void *) pDrawable); + #endif + + return; + } + + #ifdef TEST + fprintf(stderr, "nxagentRegionSplit: Associated region [%d,%d,%d,%d] to drawable at [%p] " + "with resource [%d].\n", pRegion -> extents.x1, pRegion -> extents.y1, + pRegion -> extents.x2, pRegion -> extents.y2, (void *) pDrawable, + pResource -> split); + #endif + + pResource -> region = pRegion; +} + +/* + * Remove the association between the drawable + * and the split resource. The resource is not + * deallocated until the end of the split. + */ + +void nxagentReleaseSplit(DrawablePtr pDrawable) +{ + SplitResourcePtr pResource; + + pDrawable = nxagentSplitDrawable(pDrawable); + + pResource = nxagentSplitResource(pDrawable); + + if (pResource == NULL) + { + #ifdef TEST + fprintf(stderr, "nxagentReleaseSplit: No split resources for drawable at [%p].\n", + (void *) pDrawable); + #endif + + return; + } + + #ifdef TEST + + fprintf(stderr, "nxagentReleaseSplit: Going to release resource [%d] for drawable at [%p].\n", + pResource -> split, (void *) pDrawable); + + nxagentCheckSplit(pDrawable, pResource); + + #endif + + if (pResource -> region != NullRegion) + { + /* + * If we have a region the commits + * had to be still valid. In this + * case tell the proxy to abort the + * data transfer. + */ + + #ifdef TEST + + if (pResource -> commit == 0) + { + #ifdef PANIC + fprintf(stderr, "nxagentReleaseSplit: PANIC! Found a region for resource [%d] but the " + "commits are invalid.\n", pResource -> split); + #endif + + FatalError("nxagentCheckSplit: PANIC! Found a region for resource [%d] but the " + "commits are invalid.\n", pResource -> split); + } + + #endif + + #ifdef TEST + fprintf(stderr, "nxagentValidateSplit: Aborting the data transfer for resource [%d].\n", + pResource -> split); + #endif + + NXAbortSplit(nxagentDisplay, pResource -> split); + + #ifdef TEST + fprintf(stderr, "nxagentReleaseSplit: Freeing the region for drawable at [%p].\n", + (void *) pDrawable); + #endif + + REGION_DESTROY(pDrawable -> pScreen, pResource -> region); + + pResource -> region = NullRegion; + } + + if (pResource -> gc != NULL) + { + #ifdef TEST + fprintf(stderr, "nxagentReleaseSplit: Freeing the split GC for drawable at [%p].\n", + (void *) pDrawable); + #endif + + FreeScratchGC(pResource -> gc); + + pResource -> gc = NULL; + } + + /* + * Remove the association between the + * drawable and the resource record. + */ + + #ifdef TEST + fprintf(stderr, "nxagentReleaseSplit: Removing association to drawable at [%p].\n", + (void *) pDrawable); + #endif + + if (pDrawable -> type == DRAWABLE_PIXMAP) + { + nxagentPixmapPriv((PixmapPtr) pDrawable) -> splitResource = NULL; + } + else + { + nxagentWindowPriv((WindowPtr) pDrawable) -> splitResource = NULL; + } + + /* + * Invalidate the commits and remove the + * association between the resource and + * the drawable. + */ + + pResource -> drawable = NULL; + pResource -> commit = 0; +} + +void nxagentValidateSplit(DrawablePtr pDrawable, RegionPtr pRegion) +{ + SplitResourcePtr pResource; + + pDrawable = nxagentSplitDrawable(pDrawable); + + pResource = nxagentSplitResource(pDrawable); + + if (pResource == NULL) + { + #ifdef TEST + fprintf(stderr, "nxagentValidateSplit: No split resource for drawable at [%p].\n", + (void *) pDrawable); + #endif + + return; + } + else if (pResource -> region == NullRegion) + { + #ifdef TEST + fprintf(stderr, "nxagentValidateSplit: No split region yet for drawable at [%p].\n", + (void *) pDrawable); + #endif + + return; + } + else if (pResource -> commit == 0) + { + #ifdef TEST + fprintf(stderr, "nxagentValidateSplit: WARNING! Split for drawable at [%p] was " + "already invalidated.\n", (void *) pDrawable); + #endif + + return; + } + + #ifdef TEST + + fprintf(stderr, "nxagentValidateSplit: Going to validate resource [%d] drawable at [%p].\n", + pResource -> split, (void *) pDrawable); + + nxagentCheckSplit(pDrawable, pResource); + + #endif + + #ifdef TEST + fprintf(stderr, "nxagentValidateSplit: Checking the region for resource [%d] " + "and drawable at [%p].\n", pResource -> split, (void *) pDrawable); + #endif + + /* + * If a null region is passed as parameter, + * we assume that all the commits have to + * be discarded. + */ + + if (pRegion == NullRegion) + { + #ifdef TEST + fprintf(stderr, "nxagentValidateSplit: Forcing all commits as invalid for " + "drawable at [%p].\n", (void *) pDrawable); + #endif + + nxagentReleaseSplit(pDrawable); + } + else + { + RegionRec tmpRegion; + + /* + * Check if the provided region overlaps + * the area covered by the image being + * streamed. + */ + + REGION_INIT(pDrawable -> pScreen, &tmpRegion, NullBox, 1); + + REGION_INTERSECT(pDrawable -> pScreen, &tmpRegion, pResource -> region, pRegion); + + if (REGION_NIL(&tmpRegion) == 0) + { + #ifdef TEST + fprintf(stderr, "nxagentValidateSplit: Marking the overlapping commits as invalid " + "for drawable at [%p].\n", (void *) pDrawable); + #endif + + nxagentReleaseSplit(pDrawable); + } + #ifdef TEST + else + { + fprintf(stderr, "nxagentValidateSplit: Leaving the commits as valid for " + "drawable at [%p].\n", (void *) pDrawable); + } + #endif + + REGION_UNINIT(pDrawable -> pScreen, &tmpRegion); + } +} + +void nxagentFreeSplit(int resource) +{ + DrawablePtr pDrawable; + + SplitResourcePtr pResource = &nxagentSplitResources[resource]; + + if (pResource == NULL) + { + #ifdef PANIC + fprintf(stderr, "nxagentFreeSplit: PANIC! No valid split record for resource [%d].\n", + resource); + #endif + + FatalError("nxagentFreeSplit: PANIC! No valid split record for resource [%d].\n", + resource); + } + else if (pResource -> split != resource) + { + #ifdef PANIC + fprintf(stderr, "nxagentFreeSplit: PANIC! The record [%d] doesn't match the resource [%d].\n", + pResource -> split, resource); + #endif + + FatalError("nxagentFreeSplit: PANIC! The record [%d] doesn't match the resource [%d].\n", + pResource -> split, resource); + } + + pDrawable = pResource -> drawable; + + if (pDrawable != NULL) + { + #ifdef TEST + fprintf(stderr, "nxagentFreeSplit: Removing association to drawable at [%p].\n", + (void *) pDrawable); + #endif + + nxagentReleaseSplit(pDrawable); + } + #ifdef TEST + else + { + /* + * The end of the split has come after we have + * invalidated the operation and removed the + * association to the drawable. This happens, + * for example, if the drawable is destroyed. + */ + + fprintf(stderr, "nxagentFreeSplit: WARNING! Releasing invalidated resource [%d].\n", + pResource -> split); + } + #endif + + #ifdef TEST + fprintf(stderr, "nxagentFreeSplit: Freeing the record for resource [%d].\n", + pResource -> split); + #endif + + nxagentFreeSplitResource(pResource); +} + +/* +FIXME: This must be enabled when the vanilla + synchronization procedure is working. +*/ +#define USE_FINISH_SPLIT + +void nxagentWaitDrawable(DrawablePtr pDrawable) +{ + SplitResourcePtr pResource; + + pDrawable = nxagentSplitDrawable(pDrawable); + + pResource = nxagentSplitResource(pDrawable); + + if (pResource == NULL) + { + #ifdef TEST + fprintf(stderr, "++++++nxagentWaitDrawable: WARNING! The drawable at [%p] is already awake.\n", + (void *) pDrawable); + #endif + + return; + } + + #ifdef TEST + fprintf(stderr, "++++++nxagentWaitDrawable: Waiting drawable at [%p] with resource [%d].\n", + (void *) pDrawable, pResource -> split); + #endif + + /* + * Be sure we intercept an I/O error + * as well as an interrupt. + */ + + #ifdef USE_FINISH_SPLIT + + NXFinishSplit(nxagentDisplay, pResource -> split); + + #endif + + NXFlushDisplay(nxagentDisplay, NXFlushBuffer); + + for (;;) + { + /* + * Handling all the possible events here + * preempts the queue and makes a better + * use of the link. + * + * We should better use XIfEvent() instead + * of looping again and again through the + * event queue. + */ + + nxagentDispatchEvents(NULL); + + /* + * Wait indefinitely until the resource + * is released or the display is shut + * down. + */ + + if (nxagentSplitResource(pDrawable) == NULL || + NXDisplayError(nxagentDisplay) == 1) + { + #ifdef TEST + + if (NXDisplayError(nxagentDisplay) == 1) + { + fprintf(stderr, "++++++nxagentWaitDrawable: WARNING! Display error detected while " + "waiting for the drawable.\n"); + } + else + { + fprintf(stderr, "++++++nxagentWaitDrawable: Drawable at [%p] can now be restarted.\n", + (void *) pDrawable); + } + + #endif + + return; + } + + #ifdef TEST + fprintf(stderr, "++++++nxagentWaitDrawable: Yielding control to the NX transport.\n"); + #endif + + nxagentWaitEvents(nxagentDisplay, NULL); + } +} + +static Bool nxagentCommitSplitPredicate(Display *display, XEvent *event, XPointer ptr) +{ + return (event -> type == ClientMessage && + event -> xclient.data.l[0] == NXCommitSplitNotify && + event -> xclient.window == 0 && event -> xclient.message_type == 0 && + event -> xclient.format == 32); +} + +void nxagentWaitCommitEvent(int resource) +{ + XEvent event; + + /* + * Check if there is any commit pending. As + * we are at it, handle any commit, even those + * commits pertaining to other resources. + * + * We can receive some commits even if we'll + * later receive a no-split event. The proxy, + * in fact, may have missed to find the image + * in the memory cache and could have loaded it + * from disk (so requiring a commit) before we + * marked the end of the split sequence. + */ + + while (nxagentCheckEvents(nxagentDisplay, &event, + nxagentCommitSplitPredicate, NULL) == 1) + { + int client = event.xclient.data.l[1]; + int request = event.xclient.data.l[2]; + int position = event.xclient.data.l[3]; + + #ifdef TEST + fprintf(stderr, "nxagentWaitCommitEvent: Commit event received with " + "client [%d] request [%d] and position [%d].\n", + client, request, position); + #endif + + nxagentHandleCommitSplitEvent(client, request, position); + } +} + +static Bool nxagentWaitSplitPredicate(Display *display, XEvent *event, XPointer ptr) +{ + return (event -> type == ClientMessage && + (event -> xclient.data.l[0] == NXNoSplitNotify || + event -> xclient.data.l[0] == NXStartSplitNotify) && + event -> xclient.window == 0 && event -> xclient.message_type == 0 && + event -> xclient.format == 32); +} + +int nxagentWaitSplitEvent(int resource) +{ + XEvent event; + + int split = 0; + + /* + * Don't flush the link. We only want to + * query the NX transport to check whether + * the operation caused a split. + */ + + NXFlushDisplay(nxagentDisplay, NXFlushBuffer); + + for (;;) + { + #ifdef TEST + fprintf(stderr, "nxagentWaitSplitEvent: Waiting for the split event for resource [%d].\n", + resource); + #endif + + XIfEvent(nxagentDisplay, &event, nxagentWaitSplitPredicate, NULL); + + if (NXDisplayError(nxagentDisplay) == 1) + { + #ifdef TEST + fprintf(stderr, "nxagentWaitSplitEvent: WARNING! Error detected reading the event.\n"); + #endif + + nxagentHandleNoSplitEvent(resource); + + break; + } + + #ifdef TEST + fprintf(stderr, "nxagentWaitSplitEvent: Going to process the split event.\n"); + #endif + + if (resource != (int) event.xclient.data.l[1]) + { + #ifdef PANIC + fprintf(stderr, "nxagentWaitSplitEvent: PANIC! Got event for resource [%d] while " + "waiting for resource [%d].\n", (int) event.xclient.data.l[1], resource); + + fprintf(stderr, "nxagentWaitSplitEvent: PANIC! Restarting resource [%d] due to the " + "missing split event.\n", resource); + #endif + + nxagentHandleNoSplitEvent(resource); + + break; + } + else if (event.xclient.data.l[0] == NXNoSplitNotify) + { + nxagentHandleNoSplitEvent(resource); + + break; + } + else + { + nxagentHandleStartSplitEvent(resource); + + split = 1; + + break; + } + } + + return split; +} + +void nxagentHandleNoSplitEvent(int resource) +{ + if (resource >= 0 && resource < NXNumberOfResources) + { + #ifdef TEST + + SplitResourcePtr pResource = &nxagentSplitResources[resource]; + + fprintf(stderr, "nxagentHandleNoSplitEvent: Received event for resource [%d].\n", + resource); + + nxagentCheckResource(pResource, resource); + + #endif + + #ifdef TEST + fprintf(stderr, "nxagentHandleNoSplitEvent: Checking if there is any commit pending.\n"); + #endif + + nxagentWaitCommitEvent(resource); + + #ifdef TEST + fprintf(stderr, "nxagentHandleNoSplitEvent: No streaming was required with resource [%d] " + "and drawable at [%p].\n", resource, (void *) pResource -> drawable); + #endif + + /* + * Release the resource. + */ + + nxagentFreeSplit(resource); + } + #ifdef PANIC + else + { + fprintf(stderr, "nxagentHandleNoSplitEvent: PANIC! Invalid resource identifier [%d] " + " received in event.\n", resource); + } + #endif +} + +void nxagentHandleStartSplitEvent(int resource) +{ + if (resource >= 0 && resource < NXNumberOfResources) + { + #ifdef TEST + + SplitResourcePtr pResource = &nxagentSplitResources[resource]; + + fprintf(stderr, "nxagentHandleStartSplitEvent: Received event for resource [%d].\n", + resource); + + nxagentCheckResource(pResource, resource); + + #endif + + #ifdef TEST + fprintf(stderr, "nxagentHandleStartSplitEvent: Checking if there is any commit pending.\n"); + #endif + + nxagentWaitCommitEvent(resource); + + #ifdef TEST + fprintf(stderr, "nxagentHandleStartSplitEvent: Streaming started with resource [%d] " + "and drawable at [%p].\n", resource, (void *) pResource -> drawable); + #endif + } + #ifdef PANIC + else + { + fprintf(stderr, "nxagentHandleStartSplitEvent: PANIC! Invalid resource identifier [%d] " + " received in event.\n", resource); + } + #endif +} + +void nxagentHandleCommitSplitEvent(int resource, int request, int position) +{ + if (resource >= 0 && resource < NXNumberOfResources && + request >= 0 && position >= 0) + { + SplitResourcePtr pResource = &nxagentSplitResources[resource]; + + #ifdef TEST + fprintf(stderr, "nxagentHandleCommitSplitEvent: Received event for resource [%d].\n", + resource); + #endif + + if (pResource != NULL && pResource -> commit == 1) + { + #ifdef TEST + + nxagentCheckResource(pResource, resource); + + fprintf(stderr, "nxagentHandleCommitSplitEvent: Committing request [%d] with " + "position [%d] for resource [%d].\n", request, position, resource); + + #endif + + NXCommitSplit(nxagentDisplay, resource, 1, request, position); + } + else + { + #ifdef TEST + fprintf(stderr, "nxagentHandleCommitSplitEvent: Discarding request [%d] for " + "resource [%d] with position [%d].\n", request, resource, position); + #endif + + NXCommitSplit(nxagentDisplay, resource, 0, request, position); + } + } + #ifdef PANIC + else + { + fprintf(stderr, "nxagentHandleCommitSplitEvent: PANIC! Invalid commit event with " + "request [%d] and position [%d] for resource [%d].\n", request, + position, resource); + } + #endif +} + +void nxagentHandleEndSplitEvent(int resource) +{ + if (resource >= 0 && resource < NXNumberOfResources) + { + SplitResourcePtr pResource = &nxagentSplitResources[resource]; + + #ifdef TEST + fprintf(stderr, "nxagentHandleEndSplitEvent: Received event for resource [%d].\n", + resource); + + nxagentCheckResource(pResource, resource); + + #endif + + #ifdef TEST + fprintf(stderr, "nxagentHandleEndSplitEvent: Checking if there is any commit pending.\n"); + #endif + + nxagentWaitCommitEvent(resource); + + if (pResource != NULL && pResource -> commit == 1) + { + #ifdef TEST + + fprintf(stderr, "nxagentHandleEndSplitEvent: Checking the split region at [%p] " + "for drawable at [%p].\n", (void *) pResource -> drawable, + (void *) pResource -> region); + + if (pResource -> region == NULL) + { + #ifdef PANIC + fprintf(stderr, "nxagentHandleEndSplitEvent: PANIC! Invalid region [%p] for drawable at [%p].\n", + (void *) pResource -> region, (void *) pResource -> drawable); + #endif + + FatalError("nxagentHandleEndSplitEvent: PANIC! Invalid region [%p] for drawable at [%p].\n", + (void *) pResource -> region, (void *) pResource -> drawable); + } + else if (pResource -> gc == NULL) + { + #ifdef PANIC + fprintf(stderr, "nxagentHandleEndSplitEvent: PANIC! Invalid GC [%p] for drawable at [%p].\n", + (void *) pResource -> gc, (void *) pResource -> drawable); + #endif + + FatalError("nxagentHandleEndSplitEvent: PANIC! Invalid GC [%p] for drawable at [%p].\n", + (void *) pResource -> gc, (void *) pResource -> drawable); + } + + #endif + + if (pResource -> drawable != NULL && + pResource -> region != NullRegion) + { + if (REGION_NIL(pResource -> region) == 0) + { + REGION_SUBTRACT(pResource -> drawable -> pScreen, + nxagentCorruptedRegion(pResource -> drawable), + nxagentCorruptedRegion(pResource -> drawable), + pResource -> region); + +/* +FIXME: Implementing the valid region policy + + nxagentExpandValidRegion(pResource -> drawable, pResource -> region); +*/ + + #ifdef TEST + fprintf(stderr, "nxagentHandleEndSplitEvent: Synchronized region [%d,%d,%d,%d] " + "for drawable at [%p].\n", pResource -> region -> extents.x1, + pResource -> region -> extents.y1, pResource -> region -> extents.x2, + pResource -> region -> extents.y2, (void *) pResource -> drawable); + #endif + } + else + { + #ifdef PANIC + fprintf(stderr, "nxagentHandleEndSplitEvent: PANIC! The region [%d,%d,%d,%d] for drawable " + "at [%p] is empty.\n", pResource -> region -> extents.x1, + pResource -> region -> extents.y1, pResource -> region -> extents.x2, + pResource -> region -> extents.y2, (void *) pResource -> drawable); + #endif + + FatalError("nxagentHandleEndSplitEvent: PANIC! The region [%d,%d,%d,%d] for drawable " + "at [%p] is empty.\n", pResource -> region -> extents.x1, + pResource -> region -> extents.y1, pResource -> region -> extents.x2, + pResource -> region -> extents.y2, (void *) pResource -> drawable); + } + } + else + { + #ifdef PANIC + fprintf(stderr, "nxagentHandleEndSplitEvent: PANIC! Invalid record for resource [%d] with " + "pending [%d] split [%d] unpack [%d] drawable [%p] region [%p] commit [%d] gc [%p].\n", + resource, pResource -> pending, pResource -> split, pResource -> unpack, + (void *) pResource -> drawable, (void *) pResource -> region, + pResource -> commit, (void *) pResource -> gc); + #endif + + FatalError("nxagentHandleEndSplitEvent: PANIC! Invalid record for resource [%d] with " + "pending [%d] split [%d] unpack [%d] drawable [%p] region [%p] commit [%d] gc [%p].\n", + resource, pResource -> pending, pResource -> split, pResource -> unpack, + (void *) pResource -> drawable, (void *) pResource -> region, + pResource -> commit, (void *) pResource -> gc); + } + } + + /* + * Release the resource. + */ + + nxagentFreeSplit(resource); + } + #ifdef TEST + else + { + fprintf(stderr, "nxagentHandleEndSplitEvent: WARNING! Ignoring split event " + "for resource [%d].\n", resource); + } + #endif +} + +void nxagentHandleEmptySplitEvent() +{ +/* +FIXME: Should run a consistency check here. +*/ + #ifdef TEST + fprintf(stderr, "nxagentHandleEmptySplitEvent: No more split event to handle.\n"); + #endif +} + +/* + * The drawable is going to become corrupted. + */ + +void nxagentSetCorruptedTimestamp(DrawablePtr pDrawable) +{ + if (nxagentDrawableStatus(pDrawable) == Synchronized) + { + if (pDrawable -> type == DRAWABLE_PIXMAP) + { + #ifdef TEST + fprintf(stderr, "nxagentSetCorruptedTimestamp: Corruption timestamp for pixmap at [%p] was [%lu].\n", + (void *) pDrawable, nxagentPixmapPriv((PixmapPtr) pDrawable) -> corruptedTimestamp); + #endif + + nxagentPixmapPriv((PixmapPtr) pDrawable) -> corruptedTimestamp = GetTimeInMillis(); + + #ifdef TEST + fprintf(stderr, "nxagentSetCorruptedTimestamp: New corruption timestamp for pixmap at [%p] is [%lu].\n", + (void *) pDrawable, nxagentPixmapPriv((PixmapPtr) pDrawable) -> corruptedTimestamp); + #endif + } + else + { + #ifdef TEST + fprintf(stderr, "nxagentSetCorruptedTimestamp: Corruption timestamp for window at [%p] was [%lu].\n", + (void *) pDrawable, nxagentWindowPriv((WindowPtr) pDrawable) -> corruptedTimestamp); + #endif + + nxagentWindowPriv((WindowPtr) pDrawable) -> corruptedTimestamp = GetTimeInMillis(); + + #ifdef TEST + fprintf(stderr, "nxagentSetCorruptedTimestamp: New corruption timestamp for window at [%p] is [%lu].\n", + (void *) pDrawable, nxagentWindowPriv((WindowPtr) pDrawable) -> corruptedTimestamp); + #endif + } + } +} + +/* + * Reset the timestamp taken when the drawable + * became initially corrupted. The timestamp is + * reset only after the drawable has been fully + * synchronized. + */ + +void nxagentResetCorruptedTimestamp(DrawablePtr pDrawable) +{ + if (nxagentDrawableStatus(pDrawable) == Synchronized) + { + if (pDrawable -> type == DRAWABLE_PIXMAP) + { + #ifdef TEST + fprintf(stderr, "nxagentResetCorruptedTimestamp: Corruption timestamp for pixmap at [%p] was [%lu].\n", + (void *) pDrawable, nxagentPixmapPriv((PixmapPtr) pDrawable) -> corruptedTimestamp); + #endif + + nxagentPixmapPriv((PixmapPtr) pDrawable) -> corruptedTimestamp = 0; + } + else + { + #ifdef TEST + fprintf(stderr, "nxagentResetCorruptedTimestamp: Corruption timestamp for window at [%p] was [%lu].\n", + (void *) pDrawable, nxagentWindowPriv((WindowPtr) pDrawable) -> corruptedTimestamp); + #endif + + nxagentWindowPriv((WindowPtr) pDrawable) -> corruptedTimestamp = 0; + } + } +} + |