xserver git update 11/5/2010

1 files changed, 928 insertions, 920 deletions

diff --git a/xorg-server/dix/resource.c b/xorg-server/dix/resource.c
index 91d0cfb1c..2eb1b3697 100644
--- a/xorg-server/dix/resource.c
+++ b/xorg-server/dix/resource.c
@@ -1,920 +1,928 @@
-/************************************************************
-
-Copyright 1987, 1998  The Open Group
-
-Permission to use, copy, modify, distribute, and sell this software and its
-documentation for any purpose is hereby granted without fee, provided that
-the above copyright notice appear in all copies and that both that
-copyright notice and this permission notice appear in supporting
-documentation.
-
-The above copyright notice and this permission notice 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
-OPEN GROUP 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.
-
-Except as contained in this notice, the name of The Open Group shall not be
-used in advertising or otherwise to promote the sale, use or other dealings
-in this Software without prior written authorization from The Open Group.
-
-
-Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts.
-
-                        All Rights Reserved
-
-Permission to use, copy, modify, and distribute this software and its 
-documentation for any purpose and without fee is hereby granted, 
-provided that the above copyright notice appear in all copies and that
-both that copyright notice and this permission notice appear in 
-supporting documentation, and that the name of Digital not be
-used in advertising or publicity pertaining to distribution of the
-software without specific, written prior permission.  
-
-DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
-ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
-DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
-ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
-WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
-ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
-SOFTWARE.
-
-********************************************************/
-/* The panoramix components contained the following notice */
-/*****************************************************************
-
-Copyright (c) 1991, 1997 Digital Equipment Corporation, Maynard, Massachusetts.
-
-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.
-
-The above copyright notice and this permission notice 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
-DIGITAL EQUIPMENT CORPORATION BE LIABLE FOR ANY CLAIM, DAMAGES, INCLUDING,
-BUT NOT LIMITED TO CONSEQUENTIAL OR INCIDENTAL 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.
-
-Except as contained in this notice, the name of Digital Equipment Corporation
-shall not be used in advertising or otherwise to promote the sale, use or other
-dealings in this Software without prior written authorization from Digital
-Equipment Corporation.
-
-******************************************************************/
-/* XSERVER_DTRACE additions:
- * Copyright 2005-2006 Sun Microsystems, Inc.  All rights reserved.
- *
- * 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.
- */
-
-/*	Routines to manage various kinds of resources:
- *
- *	CreateNewResourceType, CreateNewResourceClass, InitClientResources,
- *	FakeClientID, AddResource, FreeResource, FreeClientResources,
- *	FreeAllResources, LookupIDByType, LookupIDByClass, GetXIDRange
- */
-
-/* 
- *      A resource ID is a 32 bit quantity, the upper 2 bits of which are
- *	off-limits for client-visible resources.  The next 8 bits are
- *      used as client ID, and the low 22 bits come from the client.
- *	A resource ID is "hashed" by extracting and xoring subfields
- *      (varying with the size of the hash table).
- *
- *      It is sometimes necessary for the server to create an ID that looks
- *      like it belongs to a client.  This ID, however,  must not be one
- *      the client actually can create, or we have the potential for conflict.
- *      The 31st bit of the ID is reserved for the server's use for this
- *      purpose.  By setting CLIENT_ID(id) to the client, the SERVER_BIT to
- *      1, and an otherwise arbitrary ID in the low 22 bits, we can create a
- *      resource "owned" by the client.
- */
-
-#ifdef HAVE_DIX_CONFIG_H
-#include <dix-config.h>
-#endif
-
-#include <X11/X.h>
-#include "misc.h"
-#include "os.h"
-#include "resource.h"
-#include "dixstruct.h" 
-#include "opaque.h"
-#include "windowstr.h"
-#include "dixfont.h"
-#include "colormap.h"
-#include "inputstr.h"
-#include "dixevents.h"
-#include "dixgrabs.h"
-#include "cursor.h"
-#ifdef PANORAMIX
-#include "panoramiX.h"
-#include "panoramiXsrv.h"
-#endif
-#include "xace.h"
-#include <assert.h>
-#include "registry.h"
-
-#ifdef XSERVER_DTRACE
-#include <sys/types.h>
-typedef const char *string;
-#include "Xserver-dtrace.h"
-
-#define TypeNameString(t) LookupResourceName(t)
-#endif
-
-static void RebuildTable(
-    int /*client*/
-);
-
-#define SERVER_MINID 32
-
-#define INITBUCKETS 64
-#define INITHASHSIZE 6
-#define MAXHASHSIZE 11
-
-typedef struct _Resource {
-    struct _Resource	*next;
-    XID			id;
-    RESTYPE		type;
-    pointer		value;
-} ResourceRec, *ResourcePtr;
-#define NullResource ((ResourcePtr)NULL)
-
-typedef struct _ClientResource {
-    ResourcePtr *resources;
-    int		elements;
-    int		buckets;
-    int		hashsize;	/* log(2)(buckets) */
-    XID		fakeID;
-    XID		endFakeID;
-    XID		expectID;
-} ClientResourceRec;
-
-RESTYPE lastResourceType;
-static RESTYPE lastResourceClass;
-RESTYPE TypeMask;
-
-static DeleteType *DeleteFuncs = (DeleteType *)NULL;
-
-CallbackListPtr ResourceStateCallback;
-
-static _X_INLINE void
-CallResourceStateCallback(ResourceState state, ResourceRec *res)
-{
-    if (ResourceStateCallback) {
-	ResourceStateInfoRec rsi = { state, res->id, res->type, res->value };
-	CallCallbacks(&ResourceStateCallback, &rsi);
-    }
-}
-
-RESTYPE
-CreateNewResourceType(DeleteType deleteFunc, char *name)
-{
-    RESTYPE next = lastResourceType + 1;
-    DeleteType *funcs;
-
-    if (next & lastResourceClass)
-	return 0;
-    funcs = (DeleteType *)xrealloc(DeleteFuncs,
-				   (next + 1) * sizeof(DeleteType));
-    if (!funcs)
-	return 0;
-    if (!dixRegisterPrivateOffset(next, -1))
-	return 0;
-
-    lastResourceType = next;
-    DeleteFuncs = funcs;
-    DeleteFuncs[next] = deleteFunc;
-
-    /* Called even if name is NULL, to remove any previous entry */
-    RegisterResourceName(next, name);
-
-    return next;
-}
-
-RESTYPE
-CreateNewResourceClass(void)
-{
-    RESTYPE next = lastResourceClass >> 1;
-
-    if (next & lastResourceType)
-	return 0;
-    lastResourceClass = next;
-    TypeMask = next - 1;
-    return next;
-}
-
-static ClientResourceRec clientTable[MAXCLIENTS];
-
-/*****************
- * InitClientResources
- *    When a new client is created, call this to allocate space
- *    in resource table
- *****************/
-
-Bool
-InitClientResources(ClientPtr client)
-{
-    int i, j;
- 
-    if (client == serverClient)
-    {
-	lastResourceType = RT_LASTPREDEF;
-	lastResourceClass = RC_LASTPREDEF;
-	TypeMask = RC_LASTPREDEF - 1;
-	if (DeleteFuncs)
-	    xfree(DeleteFuncs);
-	DeleteFuncs = xalloc((lastResourceType + 1) * sizeof(DeleteType));
-	if (!DeleteFuncs)
-	    return FALSE;
-	DeleteFuncs[RT_NONE & TypeMask] = (DeleteType)NoopDDA;
-	DeleteFuncs[RT_WINDOW & TypeMask] = DeleteWindow;
-	DeleteFuncs[RT_PIXMAP & TypeMask] = dixDestroyPixmap;
-	DeleteFuncs[RT_GC & TypeMask] = FreeGC;
-	DeleteFuncs[RT_FONT & TypeMask] = CloseFont;
-	DeleteFuncs[RT_CURSOR & TypeMask] = FreeCursor;
-	DeleteFuncs[RT_COLORMAP & TypeMask] = FreeColormap;
-	DeleteFuncs[RT_CMAPENTRY & TypeMask] = FreeClientPixels;
-	DeleteFuncs[RT_OTHERCLIENT & TypeMask] = OtherClientGone;
-	DeleteFuncs[RT_PASSIVEGRAB & TypeMask] = DeletePassiveGrab;
-    }
-    clientTable[i = client->index].resources =
-	xalloc(INITBUCKETS*sizeof(ResourcePtr));
-    if (!clientTable[i].resources)
-	return FALSE;
-    clientTable[i].buckets = INITBUCKETS;
-    clientTable[i].elements = 0;
-    clientTable[i].hashsize = INITHASHSIZE;
-    /* Many IDs allocated from the server client are visible to clients,
-     * so we don't use the SERVER_BIT for them, but we have to start
-     * past the magic value constants used in the protocol.  For normal
-     * clients, we can start from zero, with SERVER_BIT set.
-     */
-    clientTable[i].fakeID = client->clientAsMask |
-			    (client->index ? SERVER_BIT : SERVER_MINID);
-    clientTable[i].endFakeID = (clientTable[i].fakeID | RESOURCE_ID_MASK) + 1;
-    clientTable[i].expectID = client->clientAsMask;
-    for (j=0; j<INITBUCKETS; j++) 
-    {
-        clientTable[i].resources[j] = NullResource;
-    }
-    return TRUE;
-}
-
-
-static int
-Hash(int client, XID id)
-{
-    id &= RESOURCE_ID_MASK;
-    switch (clientTable[client].hashsize)
-    {
-	case 6:
-	    return ((int)(0x03F & (id ^ (id>>6) ^ (id>>12))));
-	case 7:
-	    return ((int)(0x07F & (id ^ (id>>7) ^ (id>>13))));
-	case 8:
-	    return ((int)(0x0FF & (id ^ (id>>8) ^ (id>>16))));
-	case 9:
-	    return ((int)(0x1FF & (id ^ (id>>9))));
-	case 10:
-	    return ((int)(0x3FF & (id ^ (id>>10))));
-	case 11:
-	    return ((int)(0x7FF & (id ^ (id>>11))));
-    }
-    return -1;
-}
-
-static XID
-AvailableID(
-    int client,
-    XID id,
-    XID maxid,
-    XID goodid)
-{
-    ResourcePtr res;
-
-    if ((goodid >= id) && (goodid <= maxid))
-	return goodid;
-    for (; id <= maxid; id++)
-    {
-	res = clientTable[client].resources[Hash(client, id)];
-	while (res && (res->id != id))
-	    res = res->next;
-	if (!res)
-	    return id;
-    }
-    return 0;
-}
-
-void
-GetXIDRange(int client, Bool server, XID *minp, XID *maxp)
-{
-    XID id, maxid;
-    ResourcePtr *resp;
-    ResourcePtr res;
-    int i;
-    XID goodid;
-
-    id = (Mask)client << CLIENTOFFSET;
-    if (server)
-	id |= client ? SERVER_BIT : SERVER_MINID;
-    maxid = id | RESOURCE_ID_MASK;
-    goodid = 0;
-    for (resp = clientTable[client].resources, i = clientTable[client].buckets;
-	 --i >= 0;)
-    {
-	for (res = *resp++; res; res = res->next)
-	{
-	    if ((res->id < id) || (res->id > maxid))
-		continue;
-	    if (((res->id - id) >= (maxid - res->id)) ?
-		(goodid = AvailableID(client, id, res->id - 1, goodid)) :
-		!(goodid = AvailableID(client, res->id + 1, maxid, goodid)))
-		maxid = res->id - 1;
-	    else
-		id = res->id + 1;
-	}
-    }
-    if (id > maxid)
-	id = maxid = 0;
-    *minp = id;
-    *maxp = maxid;
-}
-
-/**
- *  GetXIDList is called by the XC-MISC extension's MiscGetXIDList function.
- *  This function tries to find count unused XIDs for the given client.  It 
- *  puts the IDs in the array pids and returns the number found, which should
- *  almost always be the number requested.
- *
- *  The circumstances that lead to a call to this function are very rare.
- *  Xlib must run out of IDs while trying to generate a request that wants
- *  multiple ID's, like the Multi-buffering CreateImageBuffers request.
- *
- *  No rocket science in the implementation; just iterate over all
- *  possible IDs for the given client and pick the first count IDs
- *  that aren't in use.  A more efficient algorithm could probably be
- *  invented, but this will be used so rarely that this should suffice.
- */
-
-unsigned int
-GetXIDList(ClientPtr pClient, unsigned count, XID *pids)
-{
-    unsigned int found = 0;
-    XID rc, id = pClient->clientAsMask;
-    XID maxid;
-    pointer val;
-
-    maxid = id | RESOURCE_ID_MASK;
-    while ( (found < count) && (id <= maxid) )
-    {
-	rc = dixLookupResourceByClass(&val, id, RC_ANY, serverClient,
-				      DixGetAttrAccess);
-	if (rc == BadValue)
-	{
-	    pids[found++] = id;
-	}
-	id++;
-    }
-    return found;
-}
-
-/*
- * Return the next usable fake client ID.
- *
- * Normally this is just the next one in line, but if we've used the last
- * in the range, we need to find a new range of safe IDs to avoid
- * over-running another client.
- */
-
-XID
-FakeClientID(int client)
-{
-    XID id, maxid;
-
-    id = clientTable[client].fakeID++;
-    if (id != clientTable[client].endFakeID)
-	return id;
-    GetXIDRange(client, TRUE, &id, &maxid);
-    if (!id) {
-	if (!client)
-	    FatalError("FakeClientID: server internal ids exhausted\n");
-	MarkClientException(clients[client]);
-	id = ((Mask)client << CLIENTOFFSET) | (SERVER_BIT * 3);
-	maxid = id | RESOURCE_ID_MASK;
-    }
-    clientTable[client].fakeID = id + 1;
-    clientTable[client].endFakeID = maxid + 1;
-    return id;
-}
-
-Bool
-AddResource(XID id, RESTYPE type, pointer value)
-{
-    int client;
-    ClientResourceRec *rrec;
-    ResourcePtr res, *head;
-    	
-#ifdef XSERVER_DTRACE
-    XSERVER_RESOURCE_ALLOC(id, type, value, TypeNameString(type));
-#endif
-    client = CLIENT_ID(id);
-    rrec = &clientTable[client];
-    if (!rrec->buckets)
-    {
-	ErrorF("[dix] AddResource(%lx, %lx, %lx), client=%d \n",
-		(unsigned long)id, type, (unsigned long)value, client);
-        FatalError("client not in use\n");
-    }
-    if ((rrec->elements >= 4*rrec->buckets) &&
-	(rrec->hashsize < MAXHASHSIZE))
-	RebuildTable(client);
-    head = &rrec->resources[Hash(client, id)];
-    res = xalloc(sizeof(ResourceRec));
-    if (!res)
-    {
-	(*DeleteFuncs[type & TypeMask])(value, id);
-	return FALSE;
-    }
-    res->next = *head;
-    res->id = id;
-    res->type = type;
-    res->value = value;
-    *head = res;
-    rrec->elements++;
-    if (!(id & SERVER_BIT) && (id >= rrec->expectID))
-	rrec->expectID = id + 1;
-    CallResourceStateCallback(ResourceStateAdding, res);
-    return TRUE;
-}
-
-static void
-RebuildTable(int client)
-{
-    int j;
-    ResourcePtr res, next;
-    ResourcePtr **tails, *resources;
-    ResourcePtr **tptr, *rptr;
-
-    /*
-     * For now, preserve insertion order, since some ddx layers depend
-     * on resources being free in the opposite order they are added.
-     */
-
-    j = 2 * clientTable[client].buckets;
-    tails = xalloc(j * sizeof(ResourcePtr *));
-    if (!tails)
-	return;
-    resources = xalloc(j * sizeof(ResourcePtr));
-    if (!resources)
-    {
-	xfree(tails);
-	return;
-    }
-    for (rptr = resources, tptr = tails; --j >= 0; rptr++, tptr++)
-    {
-	*rptr = NullResource;
-	*tptr = rptr;
-    }
-    clientTable[client].hashsize++;
-    for (j = clientTable[client].buckets,
-	 rptr = clientTable[client].resources;
-	 --j >= 0;
-	 rptr++)
-    {
-	for (res = *rptr; res; res = next)
-	{
-	    next = res->next;
-	    res->next = NullResource;
-	    tptr = &tails[Hash(client, res->id)];
-	    **tptr = res;
-	    *tptr = &res->next;
-	}
-    }
-    xfree(tails);
-    clientTable[client].buckets *= 2;
-    xfree(clientTable[client].resources);
-    clientTable[client].resources = resources;
-}
-
-void
-FreeResource(XID id, RESTYPE skipDeleteFuncType)
-{
-    int		cid;
-    ResourcePtr res;
-    ResourcePtr *prev, *head;
-    int *eltptr;
-    int		elements;
-
-    if (((cid = CLIENT_ID(id)) < MAXCLIENTS) && clientTable[cid].buckets)
-    {
-	head = &clientTable[cid].resources[Hash(cid, id)];
-	eltptr = &clientTable[cid].elements;
-
-	prev = head;
-	while ( (res = *prev) )
-	{
-	    if (res->id == id)
-	    {
-		RESTYPE rtype = res->type;
-
-#ifdef XSERVER_DTRACE
-		XSERVER_RESOURCE_FREE(res->id, res->type,
-			      res->value, TypeNameString(res->type));
-#endif		    
-		*prev = res->next;
-		elements = --*eltptr;
-
-		CallResourceStateCallback(ResourceStateFreeing, res);
-
-		if (rtype != skipDeleteFuncType)
-		    (*DeleteFuncs[rtype & TypeMask])(res->value, res->id);
-		xfree(res);
-		if (*eltptr != elements)
-		    prev = head; /* prev may no longer be valid */
-	    }
-	    else
-		prev = &res->next;
-        }
-    }
-}
-
-
-void
-FreeResourceByType(XID id, RESTYPE type, Bool skipFree)
-{
-    int		cid;
-    ResourcePtr res;
-    ResourcePtr *prev, *head;
-    if (((cid = CLIENT_ID(id)) < MAXCLIENTS) && clientTable[cid].buckets)
-    {
-	head = &clientTable[cid].resources[Hash(cid, id)];
-
-	prev = head;
-	while ( (res = *prev) )
-	{
-	    if (res->id == id && res->type == type)
-	    {
-#ifdef XSERVER_DTRACE
-		XSERVER_RESOURCE_FREE(res->id, res->type,
-			      res->value, TypeNameString(res->type));
-#endif		    		    
-		*prev = res->next;
-
-		CallResourceStateCallback(ResourceStateFreeing, res);
-
-		if (!skipFree)
-		    (*DeleteFuncs[type & TypeMask])(res->value, res->id);
-		xfree(res);
-		break;
-	    }
-	    else
-		prev = &res->next;
-        }
-    }
-}
-
-/*
- * Change the value associated with a resource id.  Caller
- * is responsible for "doing the right thing" with the old
- * data
- */
-
-Bool
-ChangeResourceValue (XID id, RESTYPE rtype, pointer value)
-{
-    int    cid;
-    ResourcePtr res;
-
-    if (((cid = CLIENT_ID(id)) < MAXCLIENTS) && clientTable[cid].buckets)
-    {
-	res = clientTable[cid].resources[Hash(cid, id)];
-
-	for (; res; res = res->next)
-	    if ((res->id == id) && (res->type == rtype))
-	    {
-		res->value = value;
-		return TRUE;
-	    }
-    }
-    return FALSE;
-}
-
-/* Note: if func adds or deletes resources, then func can get called
- * more than once for some resources.  If func adds new resources,
- * func might or might not get called for them.  func cannot both
- * add and delete an equal number of resources!
- */
-
-void
-FindClientResourcesByType(
-    ClientPtr client,
-    RESTYPE type,
-    FindResType func,
-    pointer cdata
-){
-    ResourcePtr *resources;
-    ResourcePtr this, next;
-    int i, elements;
-    int *eltptr;
-
-    if (!client)
-	client = serverClient;
-
-    resources = clientTable[client->index].resources;
-    eltptr = &clientTable[client->index].elements;
-    for (i = 0; i < clientTable[client->index].buckets; i++) 
-    {
-        for (this = resources[i]; this; this = next)
-	{
-	    next = this->next;
-	    if (!type || this->type == type) {
-		elements = *eltptr;
-		(*func)(this->value, this->id, cdata);
-		if (*eltptr != elements)
-		    next = resources[i]; /* start over */
-	    }
-	}
-    }
-}
-
-void
-FindAllClientResources(
-    ClientPtr client,
-    FindAllRes func,
-    pointer cdata
-){
-    ResourcePtr *resources;
-    ResourcePtr this, next;
-    int i, elements;
-    int *eltptr;
-
-    if (!client)
-        client = serverClient;
-
-    resources = clientTable[client->index].resources;
-    eltptr = &clientTable[client->index].elements;
-    for (i = 0; i < clientTable[client->index].buckets; i++)
-    {
-        for (this = resources[i]; this; this = next)
-        {
-            next = this->next;
-            elements = *eltptr;
-            (*func)(this->value, this->id, this->type, cdata);
-            if (*eltptr != elements)
-                next = resources[i]; /* start over */
-        }
-    }
-}
-
-
-pointer
-LookupClientResourceComplex(
-    ClientPtr client,
-    RESTYPE type,
-    FindComplexResType func,
-    pointer cdata
-){
-    ResourcePtr *resources;
-    ResourcePtr this, next;
-    pointer value;
-    int i;
-
-    if (!client)
-	client = serverClient;
-
-    resources = clientTable[client->index].resources;
-    for (i = 0; i < clientTable[client->index].buckets; i++) {
-        for (this = resources[i]; this; this = next) {
-	    next = this->next;
-	    if (!type || this->type == type) {
-		/* workaround func freeing the type as DRI1 does */
-		value = this->value;
-		if((*func)(value, this->id, cdata))
-		    return value;
-	    }
-	}
-    }
-    return NULL;
-}
-
-
-void
-FreeClientNeverRetainResources(ClientPtr client)
-{
-    ResourcePtr *resources;
-    ResourcePtr this;
-    ResourcePtr *prev;
-    int j;
-
-    if (!client)
-	return;
-
-    resources = clientTable[client->index].resources;
-    for (j=0; j < clientTable[client->index].buckets; j++) 
-    {
-	prev = &resources[j];
-        while ( (this = *prev) )
-	{
-	    RESTYPE rtype = this->type;
-	    if (rtype & RC_NEVERRETAIN)
-	    {
-#ifdef XSERVER_DTRACE
-		XSERVER_RESOURCE_FREE(this->id, this->type,
-			      this->value, TypeNameString(this->type));
-#endif		    
-		*prev = this->next;
-
-		CallResourceStateCallback(ResourceStateFreeing, this);
-
-		(*DeleteFuncs[rtype & TypeMask])(this->value, this->id);
-		xfree(this);
-	    }
-	    else
-		prev = &this->next;
-	}
-    }
-}
-
-void
-FreeClientResources(ClientPtr client)
-{
-    ResourcePtr *resources;
-    ResourcePtr this;
-    int j;
-
-    /* This routine shouldn't be called with a null client, but just in
-	case ... */
-
-    if (!client)
-	return;
-
-    HandleSaveSet(client);
-
-    resources = clientTable[client->index].resources;
-    for (j=0; j < clientTable[client->index].buckets; j++) 
-    {
-        /* It may seem silly to update the head of this resource list as
-	we delete the members, since the entire list will be deleted any way, 
-	but there are some resource deletion functions "FreeClientPixels" for 
-	one which do a LookupID on another resource id (a Colormap id in this
-	case), so the resource list must be kept valid up to the point that
-	it is deleted, so every time we delete a resource, we must update the
-	head, just like in FreeResource. I hope that this doesn't slow down
-	mass deletion appreciably. PRH */
-
-	ResourcePtr *head;
-
-	head = &resources[j];
-
-        for (this = *head; this; this = *head)
-	{
-	    RESTYPE rtype = this->type;
-#ifdef XSERVER_DTRACE
-	    XSERVER_RESOURCE_FREE(this->id, this->type,
-			  this->value, TypeNameString(this->type));
-#endif		    
-	    *head = this->next;
-
-	    CallResourceStateCallback(ResourceStateFreeing, this);
-
-	    (*DeleteFuncs[rtype & TypeMask])(this->value, this->id);
-	    xfree(this);
-	}
-    }
-    xfree(clientTable[client->index].resources);
-    clientTable[client->index].resources = NULL;
-    clientTable[client->index].buckets = 0;
-}
-
-void
-FreeAllResources(void)
-{
-    int	i;
-
-    for (i = currentMaxClients; --i >= 0; ) 
-    {
-        if (clientTable[i].buckets) 
-	    FreeClientResources(clients[i]);
-    }
-}
-
-Bool
-LegalNewID(XID id, ClientPtr client)
-{
-    pointer val;
-    int rc;
-
-#ifdef PANORAMIX
-    XID 	minid, maxid;
-
-	if (!noPanoramiXExtension) { 
-	    minid = client->clientAsMask | (client->index ? 
-			                    SERVER_BIT : SERVER_MINID);
-	    maxid = (clientTable[client->index].fakeID | RESOURCE_ID_MASK) + 1;
-            if ((id >= minid) && (id <= maxid))
-	        return TRUE;
-	}
-#endif /* PANORAMIX */
-	if (client->clientAsMask == (id & ~RESOURCE_ID_MASK))
-	{
-	    if (clientTable[client->index].expectID <= id)
-		return TRUE;
-
-	    rc = dixLookupResourceByClass(&val, id, RC_ANY, serverClient,
-					  DixGetAttrAccess);
-	    return (rc == BadValue);
-	}
-	return FALSE;
-}
-
-int
-dixLookupResourceByType(pointer *result, XID id, RESTYPE rtype,
-			ClientPtr client, Mask mode)
-{
-    int cid = CLIENT_ID(id);
-    ResourcePtr res = NULL;
-
-    *result = NULL;
-
-    if ((cid < MAXCLIENTS) && clientTable[cid].buckets) {
-	res = clientTable[cid].resources[Hash(cid, id)];
-
-	for (; res; res = res->next)
-	    if (res->id == id && res->type == rtype)
-		break;
-    }
-    if (!res)
-	return BadValue;
-
-    if (client) {
-	client->errorValue = id;
-	cid = XaceHook(XACE_RESOURCE_ACCESS, client, id, res->type,
-		       res->value, RT_NONE, NULL, mode);
-	if (cid != Success)
-	    return cid;
-    }
-
-    *result = res->value;
-    return Success;
-}
-
-int
-dixLookupResourceByClass(pointer *result, XID id, RESTYPE rclass,
-			 ClientPtr client, Mask mode)
-{
-    int cid = CLIENT_ID(id);
-    ResourcePtr res = NULL;
-
-    *result = NULL;
-
-    if ((cid < MAXCLIENTS) && clientTable[cid].buckets) {
-	res = clientTable[cid].resources[Hash(cid, id)];
-
-	for (; res; res = res->next)
-	    if (res->id == id && (res->type & rclass))
-		break;
-    }
-    if (!res)
-	return BadValue;
-
-    if (client) {
-	client->errorValue = id;
-	cid = XaceHook(XACE_RESOURCE_ACCESS, client, id, res->type,
-		       res->value, RT_NONE, NULL, mode);
-	if (cid != Success)
-	    return cid;
-    }
-
-    *result = res->value;
-    return Success;
-}
+/************************************************************

+

+Copyright 1987, 1998  The Open Group

+

+Permission to use, copy, modify, distribute, and sell this software and its

+documentation for any purpose is hereby granted without fee, provided that

+the above copyright notice appear in all copies and that both that

+copyright notice and this permission notice appear in supporting

+documentation.

+

+The above copyright notice and this permission notice 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

+OPEN GROUP 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.

+

+Except as contained in this notice, the name of The Open Group shall not be

+used in advertising or otherwise to promote the sale, use or other dealings

+in this Software without prior written authorization from The Open Group.

+

+

+Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts.

+

+                        All Rights Reserved

+

+Permission to use, copy, modify, and distribute this software and its 

+documentation for any purpose and without fee is hereby granted, 

+provided that the above copyright notice appear in all copies and that

+both that copyright notice and this permission notice appear in 

+supporting documentation, and that the name of Digital not be

+used in advertising or publicity pertaining to distribution of the

+software without specific, written prior permission.  

+

+DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING

+ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL

+DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR

+ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,

+WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,

+ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS

+SOFTWARE.

+

+********************************************************/

+/* The panoramix components contained the following notice */

+/*****************************************************************

+

+Copyright (c) 1991, 1997 Digital Equipment Corporation, Maynard, Massachusetts.

+

+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.

+

+The above copyright notice and this permission notice 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

+DIGITAL EQUIPMENT CORPORATION BE LIABLE FOR ANY CLAIM, DAMAGES, INCLUDING,

+BUT NOT LIMITED TO CONSEQUENTIAL OR INCIDENTAL 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.

+

+Except as contained in this notice, the name of Digital Equipment Corporation

+shall not be used in advertising or otherwise to promote the sale, use or other

+dealings in this Software without prior written authorization from Digital

+Equipment Corporation.

+

+******************************************************************/

+/* XSERVER_DTRACE additions:

+ * Copyright 2005-2006 Sun Microsystems, Inc.  All rights reserved.

+ *

+ * 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.

+ */

+

+/*	Routines to manage various kinds of resources:

+ *

+ *	CreateNewResourceType, CreateNewResourceClass, InitClientResources,

+ *	FakeClientID, AddResource, FreeResource, FreeClientResources,

+ *	FreeAllResources, LookupIDByType, LookupIDByClass, GetXIDRange

+ */

+

+/* 

+ *      A resource ID is a 32 bit quantity, the upper 2 bits of which are

+ *	off-limits for client-visible resources.  The next 8 bits are

+ *      used as client ID, and the low 22 bits come from the client.

+ *	A resource ID is "hashed" by extracting and xoring subfields

+ *      (varying with the size of the hash table).

+ *

+ *      It is sometimes necessary for the server to create an ID that looks

+ *      like it belongs to a client.  This ID, however,  must not be one

+ *      the client actually can create, or we have the potential for conflict.

+ *      The 31st bit of the ID is reserved for the server's use for this

+ *      purpose.  By setting CLIENT_ID(id) to the client, the SERVER_BIT to

+ *      1, and an otherwise arbitrary ID in the low 22 bits, we can create a

+ *      resource "owned" by the client.

+ */

+

+#ifdef HAVE_DIX_CONFIG_H

+#include <dix-config.h>

+#endif

+

+#include <X11/X.h>

+#include "misc.h"

+#include "os.h"

+#include "resource.h"

+#include "dixstruct.h" 

+#include "opaque.h"

+#include "windowstr.h"

+#include "dixfont.h"

+#include "colormap.h"

+#include "inputstr.h"

+#include "dixevents.h"

+#include "dixgrabs.h"

+#include "cursor.h"

+#ifdef PANORAMIX

+#include "panoramiX.h"

+#include "panoramiXsrv.h"

+#endif

+#include "xace.h"

+#include <assert.h>

+#include "registry.h"

+

+#ifdef XSERVER_DTRACE

+#include <sys/types.h>

+typedef const char *string;

+#include "Xserver-dtrace.h"

+

+#define TypeNameString(t) LookupResourceName(t)

+#endif

+

+static void RebuildTable(

+    int /*client*/

+);

+

+#define SERVER_MINID 32

+

+#define INITBUCKETS 64

+#define INITHASHSIZE 6

+#define MAXHASHSIZE 11

+

+typedef struct _Resource {

+    struct _Resource	*next;

+    XID			id;

+    RESTYPE		type;

+    pointer		value;

+} ResourceRec, *ResourcePtr;

+#define NullResource ((ResourcePtr)NULL)

+

+typedef struct _ClientResource {

+    ResourcePtr *resources;

+    int		elements;

+    int		buckets;

+    int		hashsize;	/* log(2)(buckets) */

+    XID		fakeID;

+    XID		endFakeID;

+    XID		expectID;

+} ClientResourceRec;

+

+RESTYPE lastResourceType;

+static RESTYPE lastResourceClass;

+RESTYPE TypeMask;

+

+static DeleteType *DeleteFuncs = (DeleteType *)NULL;

+

+CallbackListPtr ResourceStateCallback;

+

+static _X_INLINE void

+CallResourceStateCallback(ResourceState state, ResourceRec *res)

+{

+    if (ResourceStateCallback) {

+	ResourceStateInfoRec rsi = { state, res->id, res->type, res->value };

+	CallCallbacks(&ResourceStateCallback, &rsi);

+    }

+}

+

+RESTYPE

+CreateNewResourceType(DeleteType deleteFunc, char *name)

+{

+    RESTYPE next = lastResourceType + 1;

+    DeleteType *funcs;

+

+    if (next & lastResourceClass)

+	return 0;

+    funcs = (DeleteType *)xrealloc(DeleteFuncs,

+				   (next + 1) * sizeof(DeleteType));

+    if (!funcs)

+	return 0;

+    if (!dixRegisterPrivateOffset(next, -1))

+	return 0;

+

+    lastResourceType = next;

+    DeleteFuncs = funcs;

+    DeleteFuncs[next] = deleteFunc;

+

+    /* Called even if name is NULL, to remove any previous entry */

+    RegisterResourceName(next, name);

+

+    return next;

+}

+

+RESTYPE

+CreateNewResourceClass(void)

+{

+    RESTYPE next = lastResourceClass >> 1;

+

+    if (next & lastResourceType)

+	return 0;

+    lastResourceClass = next;

+    TypeMask = next - 1;

+    return next;

+}

+

+static ClientResourceRec clientTable[MAXCLIENTS];

+

+/*****************

+ * InitClientResources

+ *    When a new client is created, call this to allocate space

+ *    in resource table

+ *****************/

+

+Bool

+InitClientResources(ClientPtr client)

+{

+    int i, j;

+ 

+    if (client == serverClient)

+    {

+	lastResourceType = RT_LASTPREDEF;

+	lastResourceClass = RC_LASTPREDEF;

+	TypeMask = RC_LASTPREDEF - 1;

+	if (DeleteFuncs)

+	    xfree(DeleteFuncs);

+	DeleteFuncs = xalloc((lastResourceType + 1) * sizeof(DeleteType));

+	if (!DeleteFuncs)

+	    return FALSE;

+	DeleteFuncs[RT_NONE & TypeMask] = (DeleteType)NoopDDA;

+	DeleteFuncs[RT_WINDOW & TypeMask] = DeleteWindow;

+	DeleteFuncs[RT_PIXMAP & TypeMask] = dixDestroyPixmap;

+	DeleteFuncs[RT_GC & TypeMask] = FreeGC;

+	DeleteFuncs[RT_FONT & TypeMask] = CloseFont;

+	DeleteFuncs[RT_CURSOR & TypeMask] = FreeCursor;

+	DeleteFuncs[RT_COLORMAP & TypeMask] = FreeColormap;

+	DeleteFuncs[RT_CMAPENTRY & TypeMask] = FreeClientPixels;

+	DeleteFuncs[RT_OTHERCLIENT & TypeMask] = OtherClientGone;

+	DeleteFuncs[RT_PASSIVEGRAB & TypeMask] = DeletePassiveGrab;

+    }

+    clientTable[i = client->index].resources =

+	xalloc(INITBUCKETS*sizeof(ResourcePtr));

+    if (!clientTable[i].resources)

+	return FALSE;

+    clientTable[i].buckets = INITBUCKETS;

+    clientTable[i].elements = 0;

+    clientTable[i].hashsize = INITHASHSIZE;

+    /* Many IDs allocated from the server client are visible to clients,

+     * so we don't use the SERVER_BIT for them, but we have to start

+     * past the magic value constants used in the protocol.  For normal

+     * clients, we can start from zero, with SERVER_BIT set.

+     */

+    clientTable[i].fakeID = client->clientAsMask |

+			    (client->index ? SERVER_BIT : SERVER_MINID);

+    clientTable[i].endFakeID = (clientTable[i].fakeID | RESOURCE_ID_MASK) + 1;

+    clientTable[i].expectID = client->clientAsMask;

+    for (j=0; j<INITBUCKETS; j++) 

+    {

+        clientTable[i].resources[j] = NullResource;

+    }

+    return TRUE;

+}

+

+

+static int

+Hash(int client, XID id)

+{

+    id &= RESOURCE_ID_MASK;

+    switch (clientTable[client].hashsize)

+    {

+	case 6:

+	    return ((int)(0x03F & (id ^ (id>>6) ^ (id>>12))));

+	case 7:

+	    return ((int)(0x07F & (id ^ (id>>7) ^ (id>>13))));

+	case 8:

+	    return ((int)(0x0FF & (id ^ (id>>8) ^ (id>>16))));

+	case 9:

+	    return ((int)(0x1FF & (id ^ (id>>9))));

+	case 10:

+	    return ((int)(0x3FF & (id ^ (id>>10))));

+	case 11:

+	    return ((int)(0x7FF & (id ^ (id>>11))));

+    }

+    return -1;

+}

+

+static XID

+AvailableID(

+    int client,

+    XID id,

+    XID maxid,

+    XID goodid)

+{

+    ResourcePtr res;

+

+    if ((goodid >= id) && (goodid <= maxid))

+	return goodid;

+    for (; id <= maxid; id++)

+    {

+	res = clientTable[client].resources[Hash(client, id)];

+	while (res && (res->id != id))

+	    res = res->next;

+	if (!res)

+	    return id;

+    }

+    return 0;

+}

+

+void

+GetXIDRange(int client, Bool server, XID *minp, XID *maxp)

+{

+    XID id, maxid;

+    ResourcePtr *resp;

+    ResourcePtr res;

+    int i;

+    XID goodid;

+

+    id = (Mask)client << CLIENTOFFSET;

+    if (server)

+	id |= client ? SERVER_BIT : SERVER_MINID;

+    maxid = id | RESOURCE_ID_MASK;

+    goodid = 0;

+    for (resp = clientTable[client].resources, i = clientTable[client].buckets;

+	 --i >= 0;)

+    {

+	for (res = *resp++; res; res = res->next)

+	{

+	    if ((res->id < id) || (res->id > maxid))

+		continue;

+	    if (((res->id - id) >= (maxid - res->id)) ?

+		(goodid = AvailableID(client, id, res->id - 1, goodid)) :

+		!(goodid = AvailableID(client, res->id + 1, maxid, goodid)))

+		maxid = res->id - 1;

+	    else

+		id = res->id + 1;

+	}

+    }

+    if (id > maxid)

+	id = maxid = 0;

+    *minp = id;

+    *maxp = maxid;

+}

+

+/**

+ *  GetXIDList is called by the XC-MISC extension's MiscGetXIDList function.

+ *  This function tries to find count unused XIDs for the given client.  It 

+ *  puts the IDs in the array pids and returns the number found, which should

+ *  almost always be the number requested.

+ *

+ *  The circumstances that lead to a call to this function are very rare.

+ *  Xlib must run out of IDs while trying to generate a request that wants

+ *  multiple ID's, like the Multi-buffering CreateImageBuffers request.

+ *

+ *  No rocket science in the implementation; just iterate over all

+ *  possible IDs for the given client and pick the first count IDs

+ *  that aren't in use.  A more efficient algorithm could probably be

+ *  invented, but this will be used so rarely that this should suffice.

+ */

+

+unsigned int

+GetXIDList(ClientPtr pClient, unsigned count, XID *pids)

+{

+    unsigned int found = 0;

+    XID rc, id = pClient->clientAsMask;

+    XID maxid;

+    pointer val;

+

+    maxid = id | RESOURCE_ID_MASK;

+    while ( (found < count) && (id <= maxid) )

+    {

+	rc = dixLookupResourceByClass(&val, id, RC_ANY, serverClient,

+				      DixGetAttrAccess);

+	if (rc == BadValue)

+	{

+	    pids[found++] = id;

+	}

+	id++;

+    }

+    return found;

+}

+

+/*

+ * Return the next usable fake client ID.

+ *

+ * Normally this is just the next one in line, but if we've used the last

+ * in the range, we need to find a new range of safe IDs to avoid

+ * over-running another client.

+ */

+

+XID

+FakeClientID(int client)

+{

+    XID id, maxid;

+

+    id = clientTable[client].fakeID++;

+    if (id != clientTable[client].endFakeID)

+	return id;

+    GetXIDRange(client, TRUE, &id, &maxid);

+    if (!id) {

+	if (!client)

+	    FatalError("FakeClientID: server internal ids exhausted\n");

+	MarkClientException(clients[client]);

+	id = ((Mask)client << CLIENTOFFSET) | (SERVER_BIT * 3);

+	maxid = id | RESOURCE_ID_MASK;

+    }

+    clientTable[client].fakeID = id + 1;

+    clientTable[client].endFakeID = maxid + 1;

+    return id;

+}

+

+Bool

+AddResource(XID id, RESTYPE type, pointer value)

+{

+    int client;

+    ClientResourceRec *rrec;

+    ResourcePtr res, *head;

+    	

+#ifdef XSERVER_DTRACE

+    XSERVER_RESOURCE_ALLOC(id, type, value, TypeNameString(type));

+#endif

+    client = CLIENT_ID(id);

+    rrec = &clientTable[client];

+    if (!rrec->buckets)

+    {

+	ErrorF("[dix] AddResource(%lx, %lx, %lx), client=%d \n",

+		(unsigned long)id, type, (unsigned long)value, client);

+        FatalError("client not in use\n");

+    }

+    if ((rrec->elements >= 4*rrec->buckets) &&

+	(rrec->hashsize < MAXHASHSIZE))

+	RebuildTable(client);

+    head = &rrec->resources[Hash(client, id)];

+    res = xalloc(sizeof(ResourceRec));

+    if (!res)

+    {

+	(*DeleteFuncs[type & TypeMask])(value, id);

+	return FALSE;

+    }

+    res->next = *head;

+    res->id = id;

+    res->type = type;

+    res->value = value;

+    *head = res;

+    rrec->elements++;

+    if (!(id & SERVER_BIT) && (id >= rrec->expectID))

+	rrec->expectID = id + 1;

+    CallResourceStateCallback(ResourceStateAdding, res);

+    return TRUE;

+}

+

+static void

+RebuildTable(int client)

+{

+    int j;

+    ResourcePtr res, next;

+    ResourcePtr **tails, *resources;

+    ResourcePtr **tptr, *rptr;

+

+    /*

+     * For now, preserve insertion order, since some ddx layers depend

+     * on resources being free in the opposite order they are added.

+     */

+

+    j = 2 * clientTable[client].buckets;

+    tails = xalloc(j * sizeof(ResourcePtr *));

+    if (!tails)

+	return;

+    resources = xalloc(j * sizeof(ResourcePtr));

+    if (!resources)

+    {

+	xfree(tails);

+	return;

+    }

+    for (rptr = resources, tptr = tails; --j >= 0; rptr++, tptr++)

+    {

+	*rptr = NullResource;

+	*tptr = rptr;

+    }

+    clientTable[client].hashsize++;

+    for (j = clientTable[client].buckets,

+	 rptr = clientTable[client].resources;

+	 --j >= 0;

+	 rptr++)

+    {

+	for (res = *rptr; res; res = next)

+	{

+	    next = res->next;

+	    res->next = NullResource;

+	    tptr = &tails[Hash(client, res->id)];

+	    **tptr = res;

+	    *tptr = &res->next;

+	}

+    }

+    xfree(tails);

+    clientTable[client].buckets *= 2;

+    xfree(clientTable[client].resources);

+    clientTable[client].resources = resources;

+}

+

+void

+FreeResource(XID id, RESTYPE skipDeleteFuncType)

+{

+    int		cid;

+    ResourcePtr res;

+    ResourcePtr *prev, *head;

+    int *eltptr;

+    int		elements;

+

+    if (((cid = CLIENT_ID(id)) < MAXCLIENTS) && clientTable[cid].buckets)

+    {

+	head = &clientTable[cid].resources[Hash(cid, id)];

+	eltptr = &clientTable[cid].elements;

+

+	prev = head;

+	while ( (res = *prev) )

+	{

+	    if (res->id == id)

+	    {

+		RESTYPE rtype = res->type;

+

+#ifdef XSERVER_DTRACE

+		XSERVER_RESOURCE_FREE(res->id, res->type,

+			      res->value, TypeNameString(res->type));

+#endif		    

+		*prev = res->next;

+		elements = --*eltptr;

+

+		CallResourceStateCallback(ResourceStateFreeing, res);

+

+		if (rtype != skipDeleteFuncType)

+		    (*DeleteFuncs[rtype & TypeMask])(res->value, res->id);

+		xfree(res);

+		if (*eltptr != elements)

+		    prev = head; /* prev may no longer be valid */

+	    }

+	    else

+		prev = &res->next;

+        }

+    }

+}

+

+

+void

+FreeResourceByType(XID id, RESTYPE type, Bool skipFree)

+{

+    int		cid;

+    ResourcePtr res;

+    ResourcePtr *prev, *head;

+    if (((cid = CLIENT_ID(id)) < MAXCLIENTS) && clientTable[cid].buckets)

+    {

+	head = &clientTable[cid].resources[Hash(cid, id)];

+

+	prev = head;

+	while ( (res = *prev) )

+	{

+	    if (res->id == id && res->type == type)

+	    {

+#ifdef XSERVER_DTRACE

+		XSERVER_RESOURCE_FREE(res->id, res->type,

+			      res->value, TypeNameString(res->type));

+#endif		    		    

+		*prev = res->next;

+		clientTable[cid].elements--;

+

+		CallResourceStateCallback(ResourceStateFreeing, res);

+

+		if (!skipFree)

+		    (*DeleteFuncs[type & TypeMask])(res->value, res->id);

+		xfree(res);

+		break;

+	    }

+	    else

+		prev = &res->next;

+        }

+    }

+}

+

+/*

+ * Change the value associated with a resource id.  Caller

+ * is responsible for "doing the right thing" with the old

+ * data

+ */

+

+Bool

+ChangeResourceValue (XID id, RESTYPE rtype, pointer value)

+{

+    int    cid;

+    ResourcePtr res;

+

+    if (((cid = CLIENT_ID(id)) < MAXCLIENTS) && clientTable[cid].buckets)

+    {

+	res = clientTable[cid].resources[Hash(cid, id)];

+

+	for (; res; res = res->next)

+	    if ((res->id == id) && (res->type == rtype))

+	    {

+		res->value = value;

+		return TRUE;

+	    }

+    }

+    return FALSE;

+}

+

+/* Note: if func adds or deletes resources, then func can get called

+ * more than once for some resources.  If func adds new resources,

+ * func might or might not get called for them.  func cannot both

+ * add and delete an equal number of resources!

+ */

+

+void

+FindClientResourcesByType(

+    ClientPtr client,

+    RESTYPE type,

+    FindResType func,

+    pointer cdata

+){

+    ResourcePtr *resources;

+    ResourcePtr this, next;

+    int i, elements;

+    int *eltptr;

+

+    if (!client)

+	client = serverClient;

+

+    resources = clientTable[client->index].resources;

+    eltptr = &clientTable[client->index].elements;

+    for (i = 0; i < clientTable[client->index].buckets; i++) 

+    {

+        for (this = resources[i]; this; this = next)

+	{

+	    next = this->next;

+	    if (!type || this->type == type) {

+		elements = *eltptr;

+		(*func)(this->value, this->id, cdata);

+		if (*eltptr != elements)

+		    next = resources[i]; /* start over */

+	    }

+	}

+    }

+}

+

+void

+FindAllClientResources(

+    ClientPtr client,

+    FindAllRes func,

+    pointer cdata

+){

+    ResourcePtr *resources;

+    ResourcePtr this, next;

+    int i, elements;

+    int *eltptr;

+

+    if (!client)

+        client = serverClient;

+

+    resources = clientTable[client->index].resources;

+    eltptr = &clientTable[client->index].elements;

+    for (i = 0; i < clientTable[client->index].buckets; i++)

+    {

+        for (this = resources[i]; this; this = next)

+        {

+            next = this->next;

+            elements = *eltptr;

+            (*func)(this->value, this->id, this->type, cdata);

+            if (*eltptr != elements)

+                next = resources[i]; /* start over */

+        }

+    }

+}

+

+

+pointer

+LookupClientResourceComplex(

+    ClientPtr client,

+    RESTYPE type,

+    FindComplexResType func,

+    pointer cdata

+){

+    ResourcePtr *resources;

+    ResourcePtr this, next;

+    pointer value;

+    int i;

+

+    if (!client)

+	client = serverClient;

+

+    resources = clientTable[client->index].resources;

+    for (i = 0; i < clientTable[client->index].buckets; i++) {

+        for (this = resources[i]; this; this = next) {

+	    next = this->next;

+	    if (!type || this->type == type) {

+		/* workaround func freeing the type as DRI1 does */

+		value = this->value;

+		if((*func)(value, this->id, cdata))

+		    return value;

+	    }

+	}

+    }

+    return NULL;

+}

+

+

+void

+FreeClientNeverRetainResources(ClientPtr client)

+{

+    ResourcePtr *resources;

+    ResourcePtr this;

+    ResourcePtr *prev;

+    int j, elements;

+    int *eltptr;

+

+    if (!client)

+	return;

+

+    resources = clientTable[client->index].resources;

+    eltptr = &clientTable[client->index].elements;

+    for (j=0; j < clientTable[client->index].buckets; j++) 

+    {

+	prev = &resources[j];

+        while ( (this = *prev) )

+	{

+	    RESTYPE rtype = this->type;

+	    if (rtype & RC_NEVERRETAIN)

+	    {

+#ifdef XSERVER_DTRACE

+		XSERVER_RESOURCE_FREE(this->id, this->type,

+			      this->value, TypeNameString(this->type));

+#endif		    

+		*prev = this->next;

+		clientTable[client->index].elements--;

+

+		CallResourceStateCallback(ResourceStateFreeing, this);

+

+		elements = *eltptr;

+		(*DeleteFuncs[rtype & TypeMask])(this->value, this->id);

+		xfree(this);

+		if (*eltptr != elements)

+		    prev = &resources[j]; /* prev may no longer be valid */

+	    }

+	    else

+		prev = &this->next;

+	}

+    }

+}

+

+void

+FreeClientResources(ClientPtr client)

+{

+    ResourcePtr *resources;

+    ResourcePtr this;

+    int j;

+

+    /* This routine shouldn't be called with a null client, but just in

+	case ... */

+

+    if (!client)

+	return;

+

+    HandleSaveSet(client);

+

+    resources = clientTable[client->index].resources;

+    for (j=0; j < clientTable[client->index].buckets; j++) 

+    {

+        /* It may seem silly to update the head of this resource list as

+	we delete the members, since the entire list will be deleted any way, 

+	but there are some resource deletion functions "FreeClientPixels" for 

+	one which do a LookupID on another resource id (a Colormap id in this

+	case), so the resource list must be kept valid up to the point that

+	it is deleted, so every time we delete a resource, we must update the

+	head, just like in FreeResource. I hope that this doesn't slow down

+	mass deletion appreciably. PRH */

+

+	ResourcePtr *head;

+

+	head = &resources[j];

+

+        for (this = *head; this; this = *head)

+	{

+	    RESTYPE rtype = this->type;

+#ifdef XSERVER_DTRACE

+	    XSERVER_RESOURCE_FREE(this->id, this->type,

+			  this->value, TypeNameString(this->type));

+#endif		    

+	    *head = this->next;

+	    clientTable[client->index].elements--;

+

+	    CallResourceStateCallback(ResourceStateFreeing, this);

+

+	    (*DeleteFuncs[rtype & TypeMask])(this->value, this->id);

+	    xfree(this);

+	}

+    }

+    xfree(clientTable[client->index].resources);

+    clientTable[client->index].resources = NULL;

+    clientTable[client->index].buckets = 0;

+}

+

+void

+FreeAllResources(void)

+{

+    int	i;

+

+    for (i = currentMaxClients; --i >= 0; ) 

+    {

+        if (clientTable[i].buckets) 

+	    FreeClientResources(clients[i]);

+    }

+}

+

+Bool

+LegalNewID(XID id, ClientPtr client)

+{

+    pointer val;

+    int rc;

+

+#ifdef PANORAMIX

+    XID 	minid, maxid;

+

+	if (!noPanoramiXExtension) { 

+	    minid = client->clientAsMask | (client->index ? 

+			                    SERVER_BIT : SERVER_MINID);

+	    maxid = (clientTable[client->index].fakeID | RESOURCE_ID_MASK) + 1;

+            if ((id >= minid) && (id <= maxid))

+	        return TRUE;

+	}

+#endif /* PANORAMIX */

+	if (client->clientAsMask == (id & ~RESOURCE_ID_MASK))

+	{

+	    if (clientTable[client->index].expectID <= id)

+		return TRUE;

+

+	    rc = dixLookupResourceByClass(&val, id, RC_ANY, serverClient,

+					  DixGetAttrAccess);

+	    return (rc == BadValue);

+	}

+	return FALSE;

+}

+

+int

+dixLookupResourceByType(pointer *result, XID id, RESTYPE rtype,

+			ClientPtr client, Mask mode)

+{

+    int cid = CLIENT_ID(id);

+    ResourcePtr res = NULL;

+

+    *result = NULL;

+

+    if ((cid < MAXCLIENTS) && clientTable[cid].buckets) {

+	res = clientTable[cid].resources[Hash(cid, id)];

+

+	for (; res; res = res->next)

+	    if (res->id == id && res->type == rtype)

+		break;

+    }

+    if (!res)

+	return BadValue;

+

+    if (client) {

+	client->errorValue = id;

+	cid = XaceHook(XACE_RESOURCE_ACCESS, client, id, res->type,

+		       res->value, RT_NONE, NULL, mode);

+	if (cid != Success)

+	    return cid;

+    }

+

+    *result = res->value;

+    return Success;

+}

+

+int

+dixLookupResourceByClass(pointer *result, XID id, RESTYPE rclass,

+			 ClientPtr client, Mask mode)

+{

+    int cid = CLIENT_ID(id);

+    ResourcePtr res = NULL;

+

+    *result = NULL;

+

+    if ((cid < MAXCLIENTS) && clientTable[cid].buckets) {

+	res = clientTable[cid].resources[Hash(cid, id)];

+

+	for (; res; res = res->next)

+	    if (res->id == id && (res->type & rclass))

+		break;

+    }

+    if (!res)

+	return BadValue;

+

+    if (client) {

+	client->errorValue = id;

+	cid = XaceHook(XACE_RESOURCE_ACCESS, client, id, res->type,

+		       res->value, RT_NONE, NULL, mode);

+	if (cid != Success)

+	    return cid;

+    }

+

+    *result = res->value;

+    return Success;

+}