sync code with last improvements from OpenBSD
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xserver/include/resource.h
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275
xserver/include/resource.h
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/***********************************************************
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Copyright 1987, 1989, 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, 1989 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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#ifndef RESOURCE_H
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#define RESOURCE_H 1
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#include "misc.h"
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#include "dixaccess.h"
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/*****************************************************************
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* STUFF FOR RESOURCES
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*****************************************************************/
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/* classes for Resource routines */
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typedef uint32_t RESTYPE;
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#define RC_VANILLA ((RESTYPE)0)
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#define RC_CACHED ((RESTYPE)1<<31)
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#define RC_DRAWABLE ((RESTYPE)1<<30)
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/* Use class RC_NEVERRETAIN for resources that should not be retained
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* regardless of the close down mode when the client dies. (A client's
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* event selections on objects that it doesn't own are good candidates.)
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* Extensions can use this too!
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*/
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#define RC_NEVERRETAIN ((RESTYPE)1<<29)
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#define RC_LASTPREDEF RC_NEVERRETAIN
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#define RC_ANY (~(RESTYPE)0)
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/* types for Resource routines */
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#define RT_WINDOW ((RESTYPE)1|RC_DRAWABLE)
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#define RT_PIXMAP ((RESTYPE)2|RC_DRAWABLE)
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#define RT_GC ((RESTYPE)3)
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#undef RT_FONT
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#undef RT_CURSOR
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#define RT_FONT ((RESTYPE)4)
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#define RT_CURSOR ((RESTYPE)5)
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#define RT_COLORMAP ((RESTYPE)6)
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#define RT_CMAPENTRY ((RESTYPE)7)
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#define RT_OTHERCLIENT ((RESTYPE)8|RC_NEVERRETAIN)
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#define RT_PASSIVEGRAB ((RESTYPE)9|RC_NEVERRETAIN)
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#define RT_LASTPREDEF ((RESTYPE)9)
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#define RT_NONE ((RESTYPE)0)
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extern _X_EXPORT unsigned int ResourceClientBits(void);
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/* bits and fields within a resource id */
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#define RESOURCE_AND_CLIENT_COUNT 29 /* 29 bits for XIDs */
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#define RESOURCE_CLIENT_BITS ResourceClientBits() /* client field offset */
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#define CLIENTOFFSET (RESOURCE_AND_CLIENT_COUNT - RESOURCE_CLIENT_BITS)
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/* resource field */
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#define RESOURCE_ID_MASK ((1 << CLIENTOFFSET) - 1)
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/* client field */
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#define RESOURCE_CLIENT_MASK (((1 << RESOURCE_CLIENT_BITS) - 1) << CLIENTOFFSET)
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/* extract the client mask from an XID */
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#define CLIENT_BITS(id) ((id) & RESOURCE_CLIENT_MASK)
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/* extract the client id from an XID */
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#define CLIENT_ID(id) ((int)(CLIENT_BITS(id) >> CLIENTOFFSET))
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#define SERVER_BIT (Mask)0x40000000 /* use illegal bit */
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#ifdef INVALID
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#undef INVALID /* needed on HP/UX */
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#endif
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/* Invalid resource id */
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#define INVALID (0)
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#define BAD_RESOURCE 0xe0000000
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#define rClient(obj) (clients[CLIENT_ID((obj)->resource)])
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/* Resource state callback */
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extern _X_EXPORT CallbackListPtr ResourceStateCallback;
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typedef enum { ResourceStateAdding,
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ResourceStateFreeing
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} ResourceState;
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typedef struct {
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ResourceState state;
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XID id;
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RESTYPE type;
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void *value;
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} ResourceStateInfoRec;
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typedef int (*DeleteType) (void *value,
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XID id);
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typedef void (*FindResType) (void *value,
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XID id,
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void *cdata);
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typedef void (*FindAllRes) (void *value,
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XID id,
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RESTYPE type,
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void *cdata);
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typedef Bool (*FindComplexResType) (void *value,
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XID id,
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void *cdata);
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/* Structure for estimating resource memory usage. Memory usage
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* consists of space allocated for the resource itself and of
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* references to other resources. Currently the most important use for
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* this structure is to estimate pixmap usage of different resources
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* more accurately. */
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typedef struct {
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/* Size of resource itself. Zero if not implemented. */
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unsigned long resourceSize;
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/* Size attributed to pixmap references from the resource. */
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unsigned long pixmapRefSize;
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/* Number of references to this resource; typically 1 */
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unsigned long refCnt;
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} ResourceSizeRec, *ResourceSizePtr;
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typedef void (*SizeType)(void *value,
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XID id,
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ResourceSizePtr size);
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extern _X_EXPORT RESTYPE CreateNewResourceType(DeleteType deleteFunc,
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const char *name);
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typedef void (*FindTypeSubResources)(void *value,
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FindAllRes func,
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void *cdata);
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extern _X_EXPORT SizeType GetResourceTypeSizeFunc(
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RESTYPE /*type*/);
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extern _X_EXPORT void SetResourceTypeFindSubResFunc(
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RESTYPE /*type*/, FindTypeSubResources /*findFunc*/);
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extern _X_EXPORT void SetResourceTypeSizeFunc(
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RESTYPE /*type*/, SizeType /*sizeFunc*/);
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extern _X_EXPORT void SetResourceTypeErrorValue(
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RESTYPE /*type*/, int /*errorValue*/);
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extern _X_EXPORT RESTYPE CreateNewResourceClass(void);
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extern _X_EXPORT Bool InitClientResources(ClientPtr /*client */ );
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extern _X_EXPORT XID FakeClientID(int /*client */ );
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/* Quartz support on Mac OS X uses the CarbonCore
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framework whose AddResource function conflicts here. */
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#ifdef __APPLE__
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#define AddResource Darwin_X_AddResource
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#endif
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extern _X_EXPORT Bool AddResource(XID id,
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RESTYPE type,
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void *value);
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extern _X_EXPORT void FreeResource(XID /*id */ ,
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RESTYPE /*skipDeleteFuncType */ );
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extern _X_EXPORT void FreeResourceByType(XID /*id */ ,
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RESTYPE /*type */ ,
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Bool /*skipFree */ );
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extern _X_EXPORT Bool ChangeResourceValue(XID id,
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RESTYPE rtype,
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void *value);
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extern _X_EXPORT void FindClientResourcesByType(ClientPtr client,
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RESTYPE type,
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FindResType func,
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void *cdata);
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extern _X_EXPORT void FindAllClientResources(ClientPtr client,
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FindAllRes func,
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void *cdata);
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/** @brief Iterate through all subresources of a resource.
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@note The XID argument provided to the FindAllRes function
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may be 0 for subresources that don't have an XID */
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extern _X_EXPORT void FindSubResources(void *resource,
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RESTYPE type,
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FindAllRes func,
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void *cdata);
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extern _X_EXPORT void FreeClientNeverRetainResources(ClientPtr /*client */ );
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extern _X_EXPORT void FreeClientResources(ClientPtr /*client */ );
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extern _X_EXPORT void FreeAllResources(void);
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extern _X_EXPORT Bool LegalNewID(XID /*id */ ,
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ClientPtr /*client */ );
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extern _X_EXPORT void *LookupClientResourceComplex(ClientPtr client,
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RESTYPE type,
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FindComplexResType func,
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void *cdata);
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extern _X_EXPORT int dixLookupResourceByType(void **result,
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XID id,
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RESTYPE rtype,
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ClientPtr client,
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Mask access_mode);
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extern _X_EXPORT int dixLookupResourceByClass(void **result,
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XID id,
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RESTYPE rclass,
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ClientPtr client,
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Mask access_mode);
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extern _X_EXPORT void GetXIDRange(int /*client */ ,
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Bool /*server */ ,
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XID * /*minp */ ,
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XID * /*maxp */ );
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extern _X_EXPORT unsigned int GetXIDList(ClientPtr /*client */ ,
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unsigned int /*count */ ,
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XID * /*pids */ );
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extern _X_EXPORT RESTYPE lastResourceType;
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extern _X_EXPORT RESTYPE TypeMask;
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/** @brief A hashing function to be used for hashing resource IDs
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@param id The resource ID to hash
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@param numBits The number of bits in the resulting hash. Must be >=0.
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@note This function is really only for handling
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INITHASHSIZE..MAXHASHSIZE bit hashes, but will handle any number
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of bits by either masking numBits lower bits of the ID or by
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providing at most MAXHASHSIZE hashes.
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*/
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extern _X_EXPORT int HashResourceID(XID id, unsigned int numBits);
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#endif /* RESOURCE_H */
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