1248 lines
39 KiB
C
1248 lines
39 KiB
C
/************************************************************
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Copyright 1987, 1998 The Open Group
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Permission to use, copy, modify, distribute, and sell this software and its
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documentation for any purpose is hereby granted without fee, provided that
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the above copyright notice appear in all copies and that both that
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copyright notice and this permission notice appear in supporting
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documentation.
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
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AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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Except as contained in this notice, the name of The Open Group shall not be
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used in advertising or otherwise to promote the sale, use or other dealings
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in this Software without prior written authorization from The Open Group.
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Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts.
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All Rights Reserved
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Permission to use, copy, modify, and distribute this software and its
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documentation for any purpose and without fee is hereby granted,
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provided that the above copyright notice appear in all copies and that
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both that copyright notice and this permission notice appear in
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supporting documentation, and that the name of Digital not be
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used in advertising or publicity pertaining to distribution of the
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software without specific, written prior permission.
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DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
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ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
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DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
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ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
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WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
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ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
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SOFTWARE.
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********************************************************/
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/* The panoramix components contained the following notice */
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/*****************************************************************
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Copyright (c) 1991, 1997 Digital Equipment Corporation, Maynard, Massachusetts.
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software.
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The above copyright notice and this permission notice shall be included in
|
|
all copies or substantial portions of the Software.
|
|
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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DIGITAL EQUIPMENT CORPORATION BE LIABLE FOR ANY CLAIM, DAMAGES, INCLUDING,
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BUT NOT LIMITED TO CONSEQUENTIAL OR INCIDENTAL DAMAGES, OR OTHER LIABILITY,
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WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR
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IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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Except as contained in this notice, the name of Digital Equipment Corporation
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shall not be used in advertising or otherwise to promote the sale, use or other
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dealings in this Software without prior written authorization from Digital
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Equipment Corporation.
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******************************************************************/
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/* XSERVER_DTRACE additions:
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* Copyright (c) 2005-2006, Oracle and/or its affiliates. All rights reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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/* Routines to manage various kinds of resources:
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*
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* CreateNewResourceType, CreateNewResourceClass, InitClientResources,
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* FakeClientID, AddResource, FreeResource, FreeClientResources,
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* FreeAllResources, LookupIDByType, LookupIDByClass, GetXIDRange
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*/
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/*
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* A resource ID is a 32 bit quantity, the upper 2 bits of which are
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* off-limits for client-visible resources. The next 8 bits are
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* used as client ID, and the low 22 bits come from the client.
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* A resource ID is "hashed" by extracting and xoring subfields
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* (varying with the size of the hash table).
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*
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* It is sometimes necessary for the server to create an ID that looks
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* like it belongs to a client. This ID, however, must not be one
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* the client actually can create, or we have the potential for conflict.
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* The 31st bit of the ID is reserved for the server's use for this
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* purpose. By setting CLIENT_ID(id) to the client, the SERVER_BIT to
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* 1, and an otherwise arbitrary ID in the low 22 bits, we can create a
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* resource "owned" by the client.
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*/
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#ifdef HAVE_DIX_CONFIG_H
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#include <dix-config.h>
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#endif
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#include <X11/X.h>
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#include "misc.h"
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#include "os.h"
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#include "resource.h"
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#include "dixstruct.h"
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#include "opaque.h"
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#include "windowstr.h"
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#include "dixfont.h"
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#include "colormap.h"
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#include "inputstr.h"
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#include "dixevents.h"
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#include "dixgrabs.h"
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#include "cursor.h"
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#ifdef PANORAMIX
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#include "panoramiX.h"
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#include "panoramiXsrv.h"
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#endif
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#include "xace.h"
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#include <assert.h>
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#include "registry.h"
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#include "gcstruct.h"
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#ifdef XSERVER_DTRACE
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#include <sys/types.h>
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typedef const char *string;
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#include "Xserver-dtrace.h"
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#define TypeNameString(t) LookupResourceName(t)
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#endif
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static void RebuildTable(int /*client */
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);
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#define SERVER_MINID 32
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#define INITBUCKETS 64
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#define INITHASHSIZE 6
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#define MAXHASHSIZE 11
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typedef struct _Resource {
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struct _Resource *next;
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XID id;
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RESTYPE type;
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void *value;
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} ResourceRec, *ResourcePtr;
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typedef struct _ClientResource {
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ResourcePtr *resources;
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int elements;
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int buckets;
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int hashsize; /* log(2)(buckets) */
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XID fakeID;
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XID endFakeID;
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} ClientResourceRec;
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RESTYPE lastResourceType;
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static RESTYPE lastResourceClass;
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RESTYPE TypeMask;
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struct ResourceType {
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DeleteType deleteFunc;
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SizeType sizeFunc;
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FindTypeSubResources findSubResFunc;
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int errorValue;
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};
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/**
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* Used by all resources that don't specify a function to calculate
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* resource size. Currently this is used for all resources with
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* insignificant memory usage.
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*
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* @see GetResourceTypeSizeFunc, SetResourceTypeSizeFunc
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*
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* @param[in] value Pointer to resource object.
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*
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* @param[in] id Resource ID for the object.
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*
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* @param[out] size Fill all fields to zero to indicate that size of
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* resource can't be determined.
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*/
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static void
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GetDefaultBytes(void *value, XID id, ResourceSizePtr size)
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{
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size->resourceSize = 0;
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size->pixmapRefSize = 0;
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size->refCnt = 1;
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}
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/**
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* Used by all resources that don't specify a function to iterate
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* through subresources. Currently this is used for all resources with
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* insignificant memory usage.
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*
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* @see FindSubResources, SetResourceTypeFindSubResFunc
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*
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* @param[in] value Pointer to resource object.
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*
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* @param[in] func Function to call for each subresource.
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* @param[out] cdata Pointer to opaque data.
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*/
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static void
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DefaultFindSubRes(void *value, FindAllRes func, void *cdata)
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{
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/* do nothing */
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}
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/**
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* Calculate drawable size in bytes. Reference counting is not taken
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* into account.
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*
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* @param[in] drawable Pointer to a drawable.
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*
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* @return Estimate of total memory usage for the drawable.
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*/
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static unsigned long
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GetDrawableBytes(DrawablePtr drawable)
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{
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int bytes = 0;
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if (drawable)
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{
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int bytesPerPixel = drawable->bitsPerPixel >> 3;
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int numberOfPixels = drawable->width * drawable->height;
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bytes = numberOfPixels * bytesPerPixel;
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}
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return bytes;
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}
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/**
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* Calculate pixmap size in bytes. Reference counting is taken into
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* account. Any extra data attached by extensions and drivers is not
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* taken into account. The purpose of this function is to estimate
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* memory usage that can be attributed to single reference of the
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* pixmap.
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*
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* @param[in] value Pointer to a pixmap.
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*
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* @param[in] id Resource ID of pixmap. If the pixmap hasn't been
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* added as resource, just pass value->drawable.id.
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*
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* @param[out] size Estimate of memory usage attributed to a single
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* pixmap reference.
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*/
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static void
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GetPixmapBytes(void *value, XID id, ResourceSizePtr size)
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{
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PixmapPtr pixmap = value;
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size->resourceSize = 0;
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size->pixmapRefSize = 0;
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size->refCnt = pixmap->refcnt;
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if (pixmap && pixmap->refcnt)
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{
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DrawablePtr drawable = &pixmap->drawable;
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size->resourceSize = GetDrawableBytes(drawable);
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size->pixmapRefSize = size->resourceSize / pixmap->refcnt;
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}
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}
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/**
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* Calculate window size in bytes. The purpose of this function is to
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* estimate memory usage that can be attributed to all pixmap
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* references of the window.
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*
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* @param[in] value Pointer to a window.
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*
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* @param[in] id Resource ID of window.
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*
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* @param[out] size Estimate of memory usage attributed to a all
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* pixmap references of a window.
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*/
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static void
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GetWindowBytes(void *value, XID id, ResourceSizePtr size)
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{
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SizeType pixmapSizeFunc = GetResourceTypeSizeFunc(RT_PIXMAP);
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ResourceSizeRec pixmapSize = { 0, 0, 0 };
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WindowPtr window = value;
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/* Currently only pixmap bytes are reported to clients. */
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size->resourceSize = 0;
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/* Calculate pixmap reference sizes. */
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size->pixmapRefSize = 0;
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size->refCnt = 1;
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if (window->backgroundState == BackgroundPixmap)
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{
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PixmapPtr pixmap = window->background.pixmap;
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pixmapSizeFunc(pixmap, pixmap->drawable.id, &pixmapSize);
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size->pixmapRefSize += pixmapSize.pixmapRefSize;
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}
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if (window->border.pixmap && !window->borderIsPixel)
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{
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PixmapPtr pixmap = window->border.pixmap;
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pixmapSizeFunc(pixmap, pixmap->drawable.id, &pixmapSize);
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size->pixmapRefSize += pixmapSize.pixmapRefSize;
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}
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}
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/**
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* Iterate through subresources of a window. The purpose of this
|
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* function is to gather accurate information on what resources
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* a resource uses.
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*
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* @note Currently only sub-pixmaps are iterated
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*
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* @param[in] value Pointer to a window
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*
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* @param[in] func Function to call with each subresource
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*
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* @param[out] cdata Pointer to opaque data
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*/
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static void
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FindWindowSubRes(void *value, FindAllRes func, void *cdata)
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{
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WindowPtr window = value;
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/* Currently only pixmap subresources are reported to clients. */
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if (window->backgroundState == BackgroundPixmap)
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{
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PixmapPtr pixmap = window->background.pixmap;
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func(window->background.pixmap, pixmap->drawable.id, RT_PIXMAP, cdata);
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}
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if (window->border.pixmap && !window->borderIsPixel)
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{
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PixmapPtr pixmap = window->border.pixmap;
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func(window->background.pixmap, pixmap->drawable.id, RT_PIXMAP, cdata);
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}
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}
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/**
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* Calculate graphics context size in bytes. The purpose of this
|
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* function is to estimate memory usage that can be attributed to all
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* pixmap references of the graphics context.
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*
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* @param[in] value Pointer to a graphics context.
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*
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* @param[in] id Resource ID of graphics context.
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*
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* @param[out] size Estimate of memory usage attributed to a all
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* pixmap references of a graphics context.
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*/
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static void
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GetGcBytes(void *value, XID id, ResourceSizePtr size)
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{
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SizeType pixmapSizeFunc = GetResourceTypeSizeFunc(RT_PIXMAP);
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ResourceSizeRec pixmapSize = { 0, 0, 0 };
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GCPtr gc = value;
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/* Currently only pixmap bytes are reported to clients. */
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size->resourceSize = 0;
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/* Calculate pixmap reference sizes. */
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size->pixmapRefSize = 0;
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size->refCnt = 1;
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if (gc->stipple)
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{
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PixmapPtr pixmap = gc->stipple;
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pixmapSizeFunc(pixmap, pixmap->drawable.id, &pixmapSize);
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size->pixmapRefSize += pixmapSize.pixmapRefSize;
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}
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if (gc->tile.pixmap && !gc->tileIsPixel)
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{
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PixmapPtr pixmap = gc->tile.pixmap;
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pixmapSizeFunc(pixmap, pixmap->drawable.id, &pixmapSize);
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size->pixmapRefSize += pixmapSize.pixmapRefSize;
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}
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}
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|
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/**
|
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* Iterate through subresources of a graphics context. The purpose of
|
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* this function is to gather accurate information on what resources a
|
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* resource uses.
|
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*
|
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* @note Currently only sub-pixmaps are iterated
|
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*
|
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* @param[in] value Pointer to a window
|
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*
|
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* @param[in] func Function to call with each subresource
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*
|
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* @param[out] cdata Pointer to opaque data
|
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*/
|
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static void
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FindGCSubRes(void *value, FindAllRes func, void *cdata)
|
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{
|
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GCPtr gc = value;
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|
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/* Currently only pixmap subresources are reported to clients. */
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|
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if (gc->stipple)
|
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{
|
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PixmapPtr pixmap = gc->stipple;
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func(pixmap, pixmap->drawable.id, RT_PIXMAP, cdata);
|
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}
|
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if (gc->tile.pixmap && !gc->tileIsPixel)
|
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{
|
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PixmapPtr pixmap = gc->tile.pixmap;
|
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func(pixmap, pixmap->drawable.id, RT_PIXMAP, cdata);
|
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}
|
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}
|
|
|
|
static struct ResourceType *resourceTypes;
|
|
|
|
static const struct ResourceType predefTypes[] = {
|
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[RT_NONE & (RC_LASTPREDEF - 1)] = {
|
|
.deleteFunc = (DeleteType) NoopDDA,
|
|
.sizeFunc = GetDefaultBytes,
|
|
.findSubResFunc = DefaultFindSubRes,
|
|
.errorValue = BadValue,
|
|
},
|
|
[RT_WINDOW & (RC_LASTPREDEF - 1)] = {
|
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.deleteFunc = DeleteWindow,
|
|
.sizeFunc = GetWindowBytes,
|
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.findSubResFunc = FindWindowSubRes,
|
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.errorValue = BadWindow,
|
|
},
|
|
[RT_PIXMAP & (RC_LASTPREDEF - 1)] = {
|
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.deleteFunc = dixDestroyPixmap,
|
|
.sizeFunc = GetPixmapBytes,
|
|
.findSubResFunc = DefaultFindSubRes,
|
|
.errorValue = BadPixmap,
|
|
},
|
|
[RT_GC & (RC_LASTPREDEF - 1)] = {
|
|
.deleteFunc = FreeGC,
|
|
.sizeFunc = GetGcBytes,
|
|
.findSubResFunc = FindGCSubRes,
|
|
.errorValue = BadGC,
|
|
},
|
|
[RT_FONT & (RC_LASTPREDEF - 1)] = {
|
|
.deleteFunc = CloseFont,
|
|
.sizeFunc = GetDefaultBytes,
|
|
.findSubResFunc = DefaultFindSubRes,
|
|
.errorValue = BadFont,
|
|
},
|
|
[RT_CURSOR & (RC_LASTPREDEF - 1)] = {
|
|
.deleteFunc = FreeCursor,
|
|
.sizeFunc = GetDefaultBytes,
|
|
.findSubResFunc = DefaultFindSubRes,
|
|
.errorValue = BadCursor,
|
|
},
|
|
[RT_COLORMAP & (RC_LASTPREDEF - 1)] = {
|
|
.deleteFunc = FreeColormap,
|
|
.sizeFunc = GetDefaultBytes,
|
|
.findSubResFunc = DefaultFindSubRes,
|
|
.errorValue = BadColor,
|
|
},
|
|
[RT_CMAPENTRY & (RC_LASTPREDEF - 1)] = {
|
|
.deleteFunc = FreeClientPixels,
|
|
.sizeFunc = GetDefaultBytes,
|
|
.findSubResFunc = DefaultFindSubRes,
|
|
.errorValue = BadColor,
|
|
},
|
|
[RT_OTHERCLIENT & (RC_LASTPREDEF - 1)] = {
|
|
.deleteFunc = OtherClientGone,
|
|
.sizeFunc = GetDefaultBytes,
|
|
.findSubResFunc = DefaultFindSubRes,
|
|
.errorValue = BadValue,
|
|
},
|
|
[RT_PASSIVEGRAB & (RC_LASTPREDEF - 1)] = {
|
|
.deleteFunc = DeletePassiveGrab,
|
|
.sizeFunc = GetDefaultBytes,
|
|
.findSubResFunc = DefaultFindSubRes,
|
|
.errorValue = BadValue,
|
|
},
|
|
};
|
|
|
|
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, const char *name)
|
|
{
|
|
RESTYPE next = lastResourceType + 1;
|
|
struct ResourceType *types;
|
|
|
|
if (next & lastResourceClass)
|
|
return 0;
|
|
types = realloc(resourceTypes, (next + 1) * sizeof(*resourceTypes));
|
|
if (!types)
|
|
return 0;
|
|
|
|
lastResourceType = next;
|
|
resourceTypes = types;
|
|
resourceTypes[next].deleteFunc = deleteFunc;
|
|
resourceTypes[next].sizeFunc = GetDefaultBytes;
|
|
resourceTypes[next].findSubResFunc = DefaultFindSubRes;
|
|
resourceTypes[next].errorValue = BadValue;
|
|
|
|
/* Called even if name is NULL, to remove any previous entry */
|
|
RegisterResourceName(next, name);
|
|
|
|
return next;
|
|
}
|
|
|
|
/**
|
|
* Get the function used to calculate resource size. Extensions and
|
|
* drivers need to be able to determine the current size calculation
|
|
* function if they want to wrap or override it.
|
|
*
|
|
* @param[in] type Resource type used in size calculations.
|
|
*
|
|
* @return Function to calculate the size of a single
|
|
* resource.
|
|
*/
|
|
SizeType
|
|
GetResourceTypeSizeFunc(RESTYPE type)
|
|
{
|
|
return resourceTypes[type & TypeMask].sizeFunc;
|
|
}
|
|
|
|
/**
|
|
* Override the default function that calculates resource size. For
|
|
* example, video driver knows better how to calculate pixmap memory
|
|
* usage and can therefore wrap or override size calculation for
|
|
* RT_PIXMAP.
|
|
*
|
|
* @param[in] type Resource type used in size calculations.
|
|
*
|
|
* @param[in] sizeFunc Function to calculate the size of a single
|
|
* resource.
|
|
*/
|
|
void
|
|
SetResourceTypeSizeFunc(RESTYPE type, SizeType sizeFunc)
|
|
{
|
|
resourceTypes[type & TypeMask].sizeFunc = sizeFunc;
|
|
}
|
|
|
|
/**
|
|
* Provide a function for iterating the subresources of a resource.
|
|
* This allows for example more accurate accounting of the (memory)
|
|
* resources consumed by a resource.
|
|
*
|
|
* @see FindSubResources
|
|
*
|
|
* @param[in] type Resource type used in size calculations.
|
|
*
|
|
* @param[in] sizeFunc Function to calculate the size of a single
|
|
* resource.
|
|
*/
|
|
void
|
|
SetResourceTypeFindSubResFunc(RESTYPE type, FindTypeSubResources findFunc)
|
|
{
|
|
resourceTypes[type & TypeMask].findSubResFunc = findFunc;
|
|
}
|
|
|
|
void
|
|
SetResourceTypeErrorValue(RESTYPE type, int errorValue)
|
|
{
|
|
resourceTypes[type & TypeMask].errorValue = errorValue;
|
|
}
|
|
|
|
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;
|
|
free(resourceTypes);
|
|
resourceTypes = malloc(sizeof(predefTypes));
|
|
if (!resourceTypes)
|
|
return FALSE;
|
|
memcpy(resourceTypes, predefTypes, sizeof(predefTypes));
|
|
}
|
|
clientTable[i = client->index].resources =
|
|
malloc(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;
|
|
for (j = 0; j < INITBUCKETS; j++) {
|
|
clientTable[i].resources[j] = NULL;
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
int
|
|
HashResourceID(XID id, int numBits)
|
|
{
|
|
id &= RESOURCE_ID_MASK;
|
|
switch (numBits)
|
|
{
|
|
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))));
|
|
}
|
|
if (numBits >= 11)
|
|
return ((int)(0x7FF & (id ^ (id>>11))));
|
|
else
|
|
{
|
|
assert(numBits >= 0);
|
|
return id & ~((~0) << numBits);
|
|
}
|
|
}
|
|
|
|
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[HashResourceID(id, clientTable[client].hashsize)];
|
|
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;
|
|
void *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, void *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, %x, %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[HashResourceID(id, clientTable[client].hashsize)];
|
|
res = malloc(sizeof(ResourceRec));
|
|
if (!res) {
|
|
(*resourceTypes[type & TypeMask].deleteFunc) (value, id);
|
|
return FALSE;
|
|
}
|
|
res->next = *head;
|
|
res->id = id;
|
|
res->type = type;
|
|
res->value = value;
|
|
*head = res;
|
|
rrec->elements++;
|
|
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 = malloc(j * sizeof(ResourcePtr *));
|
|
if (!tails)
|
|
return;
|
|
resources = malloc(j * sizeof(ResourcePtr));
|
|
if (!resources) {
|
|
free(tails);
|
|
return;
|
|
}
|
|
for (rptr = resources, tptr = tails; --j >= 0; rptr++, tptr++) {
|
|
*rptr = NULL;
|
|
*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 = NULL;
|
|
tptr = &tails[HashResourceID(res->id, clientTable[client].hashsize)];
|
|
**tptr = res;
|
|
*tptr = &res->next;
|
|
}
|
|
}
|
|
free(tails);
|
|
clientTable[client].buckets *= 2;
|
|
free(clientTable[client].resources);
|
|
clientTable[client].resources = resources;
|
|
}
|
|
|
|
static void
|
|
doFreeResource(ResourcePtr res, Bool skip)
|
|
{
|
|
CallResourceStateCallback(ResourceStateFreeing, res);
|
|
|
|
if (!skip)
|
|
resourceTypes[res->type & TypeMask].deleteFunc(res->value, res->id);
|
|
|
|
free(res);
|
|
}
|
|
|
|
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[HashResourceID(id, clientTable[cid].hashsize)];
|
|
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;
|
|
|
|
doFreeResource(res, rtype == skipDeleteFuncType);
|
|
|
|
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[HashResourceID(id, clientTable[cid].hashsize)];
|
|
|
|
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--;
|
|
|
|
doFreeResource(res, skipFree);
|
|
|
|
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, void *value)
|
|
{
|
|
int cid;
|
|
ResourcePtr res;
|
|
|
|
if (((cid = CLIENT_ID(id)) < MAXCLIENTS) && clientTable[cid].buckets) {
|
|
res = clientTable[cid].resources[HashResourceID(id, clientTable[cid].hashsize)];
|
|
|
|
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, void *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 FindSubResources(void *resource,
|
|
RESTYPE type,
|
|
FindAllRes func,
|
|
void *cdata)
|
|
{
|
|
struct ResourceType rtype = resourceTypes[type & TypeMask];
|
|
rtype.findSubResFunc(resource, func, cdata);
|
|
}
|
|
|
|
void
|
|
FindAllClientResources(ClientPtr client, FindAllRes func, void *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 */
|
|
}
|
|
}
|
|
}
|
|
|
|
void *
|
|
LookupClientResourceComplex(ClientPtr client,
|
|
RESTYPE type,
|
|
FindComplexResType func, void *cdata)
|
|
{
|
|
ResourcePtr *resources;
|
|
ResourcePtr this, next;
|
|
void *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--;
|
|
elements = *eltptr;
|
|
|
|
doFreeResource(this, FALSE);
|
|
|
|
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) {
|
|
#ifdef XSERVER_DTRACE
|
|
XSERVER_RESOURCE_FREE(this->id, this->type,
|
|
this->value, TypeNameString(this->type));
|
|
#endif
|
|
*head = this->next;
|
|
clientTable[client->index].elements--;
|
|
|
|
doFreeResource(this, FALSE);
|
|
}
|
|
}
|
|
free(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)
|
|
{
|
|
void *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)) {
|
|
rc = dixLookupResourceByClass(&val, id, RC_ANY, serverClient,
|
|
DixGetAttrAccess);
|
|
return rc == BadValue;
|
|
}
|
|
return FALSE;
|
|
}
|
|
|
|
int
|
|
dixLookupResourceByType(void **result, XID id, RESTYPE rtype,
|
|
ClientPtr client, Mask mode)
|
|
{
|
|
int cid = CLIENT_ID(id);
|
|
ResourcePtr res = NULL;
|
|
|
|
*result = NULL;
|
|
if ((rtype & TypeMask) > lastResourceType)
|
|
return BadImplementation;
|
|
|
|
if ((cid < MAXCLIENTS) && clientTable[cid].buckets) {
|
|
res = clientTable[cid].resources[HashResourceID(id, clientTable[cid].hashsize)];
|
|
|
|
for (; res; res = res->next)
|
|
if (res->id == id && res->type == rtype)
|
|
break;
|
|
}
|
|
if (!res)
|
|
return resourceTypes[rtype & TypeMask].errorValue;
|
|
|
|
if (client) {
|
|
client->errorValue = id;
|
|
cid = XaceHook(XACE_RESOURCE_ACCESS, client, id, res->type,
|
|
res->value, RT_NONE, NULL, mode);
|
|
if (cid == BadValue)
|
|
return resourceTypes[rtype & TypeMask].errorValue;
|
|
if (cid != Success)
|
|
return cid;
|
|
}
|
|
|
|
*result = res->value;
|
|
return Success;
|
|
}
|
|
|
|
int
|
|
dixLookupResourceByClass(void **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[HashResourceID(id, clientTable[cid].hashsize)];
|
|
|
|
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;
|
|
}
|