xref: /xsrc/external/mit/xorg-server/dist/include/resource.h

/***********************************************************

Copyright 1987, 1989, 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.

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all copies or substantial portions of the Software.

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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
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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, 1989 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.

******************************************************************/

#ifndef RESOURCE_H
#define RESOURCE_H 1
#include "misc.h"
#include "dixaccess.h"

/*****************************************************************
 * STUFF FOR RESOURCES
 *****************************************************************/

/* classes for Resource routines */

typedef unsigned long RESTYPE;

#define RC_VANILLA	((RESTYPE)0)
#define RC_CACHED	((RESTYPE)1<<31)
#define RC_DRAWABLE	((RESTYPE)1<<30)
/*  Use class RC_NEVERRETAIN for resources that should not be retained
 *  regardless of the close down mode when the client dies.  (A client's
 *  event selections on objects that it doesn't own are good candidates.)
 *  Extensions can use this too!
 */
#define RC_NEVERRETAIN	((RESTYPE)1<<29)
#define RC_LASTPREDEF	RC_NEVERRETAIN
#define RC_ANY		(~(RESTYPE)0)

/* types for Resource routines */

#define RT_WINDOW	((RESTYPE)1|RC_DRAWABLE)
#define RT_PIXMAP	((RESTYPE)2|RC_DRAWABLE)
#define RT_GC		((RESTYPE)3)
#undef RT_FONT
#undef RT_CURSOR
#define RT_FONT		((RESTYPE)4)
#define RT_CURSOR	((RESTYPE)5)
#define RT_COLORMAP	((RESTYPE)6)
#define RT_CMAPENTRY	((RESTYPE)7)
#define RT_OTHERCLIENT	((RESTYPE)8|RC_NEVERRETAIN)
#define RT_PASSIVEGRAB	((RESTYPE)9|RC_NEVERRETAIN)
#define RT_LASTPREDEF	((RESTYPE)9)
#define RT_NONE		((RESTYPE)0)

/* bits and fields within a resource id */
#define RESOURCE_AND_CLIENT_COUNT   29			/* 29 bits for XIDs */
#if MAXCLIENTS == 64
#define RESOURCE_CLIENT_BITS	6
#endif
#if MAXCLIENTS == 128
#define RESOURCE_CLIENT_BITS	7
#endif
#if MAXCLIENTS == 256
#define RESOURCE_CLIENT_BITS	8
#endif
#if MAXCLIENTS == 512
#define RESOURCE_CLIENT_BITS	9
#endif
/* client field offset */
#define CLIENTOFFSET	    (RESOURCE_AND_CLIENT_COUNT - RESOURCE_CLIENT_BITS)
/* resource field */
#define RESOURCE_ID_MASK	((1 << CLIENTOFFSET) - 1)
/* client field */
#define RESOURCE_CLIENT_MASK	(((1 << RESOURCE_CLIENT_BITS) - 1) << CLIENTOFFSET)
/* extract the client mask from an XID */
#define CLIENT_BITS(id) ((id) & RESOURCE_CLIENT_MASK)
/* extract the client id from an XID */
#define CLIENT_ID(id) ((int)(CLIENT_BITS(id) >> CLIENTOFFSET))
#define SERVER_BIT		(Mask)0x40000000	/* use illegal bit */

#ifdef INVALID
#undef INVALID	/* needed on HP/UX */
#endif

/* Invalid resource id */
#define INVALID	(0)

#define BAD_RESOURCE 0xe0000000

#define rClient(obj) (clients[CLIENT_ID((obj)->resource)])

/* Resource state callback */
extern _X_EXPORT CallbackListPtr ResourceStateCallback;

typedef enum {ResourceStateAdding,
	      ResourceStateFreeing} ResourceState;

typedef struct {
    ResourceState state;
    XID id;
    RESTYPE type;
    pointer value;
} ResourceStateInfoRec;

typedef int (*DeleteType)(
    pointer /*value*/,
    XID /*id*/);

typedef void (*FindResType)(
    pointer /*value*/,
    XID /*id*/,
    pointer /*cdata*/);

typedef void (*FindAllRes)(
    pointer /*value*/,
    XID /*id*/,
    RESTYPE /*type*/,
    pointer /*cdata*/);

typedef Bool (*FindComplexResType)(
    pointer /*value*/,
    XID /*id*/,
    pointer /*cdata*/);

extern _X_EXPORT RESTYPE CreateNewResourceType(
    DeleteType /*deleteFunc*/, char * /*name*/);

extern _X_EXPORT void SetResourceTypeErrorValue(
    RESTYPE /*type*/, int /*errorValue*/);

extern _X_EXPORT RESTYPE CreateNewResourceClass(void);

extern _X_EXPORT Bool InitClientResources(
    ClientPtr /*client*/);

extern _X_EXPORT XID FakeClientID(
    int /*client*/);

/* Quartz support on Mac OS X uses the CarbonCore
   framework whose AddResource function conflicts here. */
#ifdef __APPLE__
#define AddResource Darwin_X_AddResource
#endif
extern _X_EXPORT Bool AddResource(
    XID /*id*/,
    RESTYPE /*type*/,
    pointer /*value*/);

extern _X_EXPORT void FreeResource(
    XID /*id*/,
    RESTYPE /*skipDeleteFuncType*/);

extern _X_EXPORT void FreeResourceByType(
    XID /*id*/,
    RESTYPE /*type*/,
    Bool /*skipFree*/);

extern _X_EXPORT Bool ChangeResourceValue(
    XID /*id*/,
    RESTYPE /*rtype*/,
    pointer /*value*/);

extern _X_EXPORT void FindClientResourcesByType(
    ClientPtr /*client*/,
    RESTYPE /*type*/,
    FindResType /*func*/,
    pointer /*cdata*/);

extern _X_EXPORT void FindAllClientResources(
    ClientPtr /*client*/,
    FindAllRes /*func*/,
    pointer /*cdata*/);

extern _X_EXPORT void FreeClientNeverRetainResources(
    ClientPtr /*client*/);

extern _X_EXPORT void FreeClientResources(
    ClientPtr /*client*/);

extern _X_EXPORT void FreeAllResources(void);

extern _X_EXPORT Bool LegalNewID(
    XID /*id*/,
    ClientPtr /*client*/);

extern _X_EXPORT pointer LookupClientResourceComplex(
    ClientPtr client,
    RESTYPE type,
    FindComplexResType func,
    pointer cdata);

extern _X_EXPORT int dixLookupResourceByType(
    pointer *result,
    XID id,
    RESTYPE rtype,
    ClientPtr client,
    Mask access_mode);

extern _X_EXPORT int dixLookupResourceByClass(
    pointer *result,
    XID id,
    RESTYPE rclass,
    ClientPtr client,
    Mask access_mode);

extern _X_EXPORT void GetXIDRange(
    int /*client*/,
    Bool /*server*/,
    XID * /*minp*/,
    XID * /*maxp*/);

extern _X_EXPORT unsigned int GetXIDList(
    ClientPtr /*client*/,
    unsigned int /*count*/,
    XID * /*pids*/);

extern _X_EXPORT RESTYPE lastResourceType;
extern _X_EXPORT RESTYPE TypeMask;

/*
 * These are deprecated compatibility functions and will be removed soon!
 * Please use the noted replacements instead.
 */

/* replaced by dixLookupResourceByType */
extern _X_EXPORT pointer SecurityLookupIDByType(
    ClientPtr client,
    XID id,
    RESTYPE rtype,
    Mask access_mode) _X_DEPRECATED;

/* replaced by dixLookupResourceByClass */
extern _X_EXPORT pointer SecurityLookupIDByClass(
    ClientPtr client,
    XID id,
    RESTYPE classes,
    Mask access_mode) _X_DEPRECATED;

/* replaced by dixLookupResourceByType */
extern _X_EXPORT pointer LookupIDByType(
    XID id,
    RESTYPE rtype) _X_DEPRECATED;

/* replaced by dixLookupResourceByClass */
extern _X_EXPORT pointer LookupIDByClass(
    XID id,
    RESTYPE classes) _X_DEPRECATED;

#endif /* RESOURCE_H */