mirror of
https://github.com/X11Libre/xserver.git
synced 2026-03-24 05:54:08 +00:00
381 lines
12 KiB
C
381 lines
12 KiB
C
/***********************************************************
|
|
|
|
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
|
|
AUTHOR 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.
|
|
|
|
******************************************************************/
|
|
|
|
// FIXME: move out non-exported functions
|
|
|
|
#ifndef PRIVATES_H
|
|
#define PRIVATES_H 1
|
|
|
|
#include <X11/Xdefs.h>
|
|
#include <X11/Xosdefs.h>
|
|
#include <X11/Xfuncproto.h>
|
|
#include <assert.h>
|
|
#include "misc.h"
|
|
|
|
/*****************************************************************
|
|
* STUFF FOR PRIVATES
|
|
*****************************************************************/
|
|
|
|
typedef struct _Private PrivateRec, *PrivatePtr;
|
|
|
|
/* WARNING: the values, as well as the total number are part of public ABI.
|
|
Adding a new one will lead to increased size as well as different field
|
|
offsets within ScreenRec.
|
|
*/
|
|
typedef enum {
|
|
/* XSELinux uses the same private keys for numerous objects
|
|
|
|
This black magic - keys of this type have very special handling:
|
|
their corresponding space is allocated at the top of the private
|
|
areas, in *several* object types (see xselinux_private[] array),
|
|
and xselinux uses the same keys for all object types
|
|
*/
|
|
PRIVATE_XSELINUX,
|
|
|
|
/* Otherwise, you get a private in just the requested structure
|
|
*/
|
|
/* These can have objects created before all of the keys are registered */
|
|
PRIVATE_SCREEN,
|
|
PRIVATE_EXTENSION,
|
|
PRIVATE_COLORMAP,
|
|
PRIVATE_DEVICE,
|
|
|
|
/* These cannot have any objects before all relevant keys are registered */
|
|
PRIVATE_CLIENT,
|
|
PRIVATE_PROPERTY,
|
|
PRIVATE_SELECTION,
|
|
PRIVATE_WINDOW,
|
|
PRIVATE_PIXMAP,
|
|
PRIVATE_GC,
|
|
PRIVATE_CURSOR,
|
|
PRIVATE_CURSOR_BITS,
|
|
|
|
/* extension privates */
|
|
PRIVATE_GLYPH,
|
|
PRIVATE_GLYPHSET,
|
|
PRIVATE_PICTURE,
|
|
PRIVATE_SYNC_FENCE,
|
|
|
|
/* last private type */
|
|
PRIVATE_LAST,
|
|
} DevPrivateType;
|
|
|
|
typedef struct _DevPrivateKeyRec {
|
|
int offset;
|
|
int size;
|
|
Bool initialized;
|
|
Bool allocated;
|
|
DevPrivateType type;
|
|
struct _DevPrivateKeyRec *next;
|
|
} DevPrivateKeyRec, *DevPrivateKey;
|
|
|
|
typedef struct _DevPrivateSetRec {
|
|
DevPrivateKey key;
|
|
unsigned offset;
|
|
int created;
|
|
int allocated;
|
|
} DevPrivateSetRec, *DevPrivateSetPtr;
|
|
|
|
typedef struct _DevScreenPrivateKeyRec {
|
|
DevPrivateKeyRec screenKey;
|
|
} DevScreenPrivateKeyRec, *DevScreenPrivateKeyPtr;
|
|
|
|
/*
|
|
* Let drivers know how to initialize private keys
|
|
*/
|
|
|
|
#define HAS_DEVPRIVATEKEYREC 1
|
|
#define HAS_DIXREGISTERPRIVATEKEY 1
|
|
|
|
/*
|
|
* @brief Register a new private index for the private type.
|
|
*
|
|
* This initializes the specified key and optionally requests pre-allocated
|
|
* private space for your driver/module. If you request no extra space, you
|
|
* may set and get a single pointer value using this private key. Otherwise,
|
|
* you can get the address of the extra space and store whatever data you like
|
|
* there.
|
|
*
|
|
* Maybe called multiple times on the same key, but the size and type must
|
|
* match or the server will abort.
|
|
*
|
|
* Note: this may move around the private storage area to different address,
|
|
* thus any pointers taken by GetPrivateAddr() et al have to be considered
|
|
* invalid after calling this function.
|
|
*
|
|
* @param key pointer to key (will be written to)
|
|
* @param type the object type the key is used for
|
|
* @param size size of the storage reserved for that key (zero => void*)
|
|
* @return FALSE if it fails to allocate memory during its operation.
|
|
*/
|
|
_X_EXPORT Bool dixRegisterPrivateKey(DevPrivateKey key, DevPrivateType type, unsigned size);
|
|
|
|
/*
|
|
* Check whether a private key has been registered
|
|
*/
|
|
static inline Bool
|
|
dixPrivateKeyRegistered(DevPrivateKey key)
|
|
{
|
|
return key->initialized;
|
|
}
|
|
|
|
/*
|
|
* Get the address of the private storage.
|
|
*
|
|
* For keys with pre-defined storage, this gets the base of that storage
|
|
* Otherwise, it returns the place where the private pointer is stored.
|
|
*/
|
|
static inline void *
|
|
dixGetPrivateAddr(PrivatePtr *privates, const DevPrivateKey key)
|
|
{
|
|
assert(key->initialized);
|
|
return (char *) (*privates) + key->offset;
|
|
}
|
|
|
|
/*
|
|
* Fetch a private pointer stored in the object
|
|
*
|
|
* Returns the pointer stored with dixSetPrivate.
|
|
* This must only be used with keys that have
|
|
* no pre-defined storage
|
|
*/
|
|
static inline void *
|
|
dixGetPrivate(PrivatePtr *privates, const DevPrivateKey key)
|
|
{
|
|
assert(key->size == 0);
|
|
return *(void **) dixGetPrivateAddr(privates, key);
|
|
}
|
|
|
|
/*
|
|
* Associate 'val' with 'key' in 'privates' so that later calls to
|
|
* dixLookupPrivate(privates, key) will return 'val'.
|
|
*/
|
|
static inline void
|
|
dixSetPrivate(PrivatePtr *privates, const DevPrivateKey key, void *val)
|
|
{
|
|
assert(key->size == 0);
|
|
*(void **) dixGetPrivateAddr(privates, key) = val;
|
|
}
|
|
|
|
#include "dix.h"
|
|
#include "resource.h"
|
|
|
|
/*
|
|
* Lookup a pointer to the private record.
|
|
*
|
|
* For privates with defined storage, return the address of the
|
|
* storage. For privates without defined storage, return the pointer
|
|
* contents
|
|
*/
|
|
static inline void *
|
|
dixLookupPrivate(PrivatePtr *privates, const DevPrivateKey key)
|
|
{
|
|
if (key->size)
|
|
return dixGetPrivateAddr(privates, key);
|
|
else
|
|
return dixGetPrivate(privates, key);
|
|
}
|
|
|
|
/*
|
|
* Look up the address of the pointer to the storage
|
|
*
|
|
* This returns the place where the private pointer is stored,
|
|
* which is only valid for privates without predefined storage.
|
|
*/
|
|
static inline void **
|
|
dixLookupPrivateAddr(PrivatePtr *privates, const DevPrivateKey key)
|
|
{
|
|
assert(key->size == 0);
|
|
return (void **) dixGetPrivateAddr(privates, key);
|
|
}
|
|
|
|
extern _X_EXPORT Bool
|
|
|
|
dixRegisterScreenPrivateKey(DevScreenPrivateKeyPtr key, ScreenPtr pScreen,
|
|
DevPrivateType type, unsigned size);
|
|
|
|
extern _X_EXPORT DevPrivateKey
|
|
_dixGetScreenPrivateKey(const DevScreenPrivateKeyPtr key, ScreenPtr pScreen);
|
|
|
|
static inline void *
|
|
dixGetScreenPrivateAddr(PrivatePtr *privates, const DevScreenPrivateKeyPtr key,
|
|
ScreenPtr pScreen)
|
|
{
|
|
return dixGetPrivateAddr(privates, _dixGetScreenPrivateKey(key, pScreen));
|
|
}
|
|
|
|
static inline void *
|
|
dixGetScreenPrivate(PrivatePtr *privates, const DevScreenPrivateKeyPtr key,
|
|
ScreenPtr pScreen)
|
|
{
|
|
return dixGetPrivate(privates, _dixGetScreenPrivateKey(key, pScreen));
|
|
}
|
|
|
|
static inline void
|
|
dixSetScreenPrivate(PrivatePtr *privates, const DevScreenPrivateKeyPtr key,
|
|
ScreenPtr pScreen, void *val)
|
|
{
|
|
dixSetPrivate(privates, _dixGetScreenPrivateKey(key, pScreen), val);
|
|
}
|
|
|
|
static inline void *
|
|
dixLookupScreenPrivate(PrivatePtr *privates, const DevScreenPrivateKeyPtr key,
|
|
ScreenPtr pScreen)
|
|
{
|
|
return dixLookupPrivate(privates, _dixGetScreenPrivateKey(key, pScreen));
|
|
}
|
|
|
|
static inline void **
|
|
dixLookupScreenPrivateAddr(PrivatePtr *privates, const DevScreenPrivateKeyPtr key,
|
|
ScreenPtr pScreen)
|
|
{
|
|
return dixLookupPrivateAddr(privates,
|
|
_dixGetScreenPrivateKey(key, pScreen));
|
|
}
|
|
|
|
/*
|
|
* These functions relate to allocations related to a specific screen;
|
|
* space will only be available for objects allocated for use on that
|
|
* screen. As such, only objects which are related directly to a specific
|
|
* screen are candidates for allocation this way, this includes
|
|
* windows, pixmaps, gcs, pictures and colormaps. This key is
|
|
* used just like any other key using dixGetPrivate and friends.
|
|
*
|
|
* This is distinctly different from the ScreenPrivateKeys above which
|
|
* allocate space in global objects like cursor bits for a specific
|
|
* screen, allowing multiple screen-related chunks of storage in a
|
|
* single global object.
|
|
*/
|
|
|
|
#define HAVE_SCREEN_SPECIFIC_PRIVATE_KEYS 1
|
|
|
|
Bool
|
|
dixRegisterScreenSpecificPrivateKey(ScreenPtr pScreen, DevPrivateKey key,
|
|
DevPrivateType type, unsigned size);
|
|
|
|
/* Clean up screen-specific privates before CloseScreen */
|
|
extern void
|
|
dixFreeScreenSpecificPrivates(ScreenPtr pScreen);
|
|
|
|
/* Initialize screen-specific privates in AddScreen */
|
|
extern void
|
|
dixInitScreenSpecificPrivates(ScreenPtr pScreen);
|
|
|
|
/* is this private created - so hotplug can avoid crashing */
|
|
Bool dixPrivatesCreated(DevPrivateType type);
|
|
|
|
extern _X_EXPORT void *
|
|
_dixAllocateScreenObjectWithPrivates(ScreenPtr pScreen,
|
|
unsigned size,
|
|
unsigned offset,
|
|
DevPrivateType type);
|
|
|
|
#define dixAllocateScreenObjectWithPrivates(s, t, type) _dixAllocateScreenObjectWithPrivates(s, sizeof(t), offsetof(t, devPrivates), type)
|
|
|
|
extern _X_EXPORT int
|
|
dixScreenSpecificPrivatesSize(ScreenPtr pScreen, DevPrivateType type);
|
|
|
|
void
|
|
_dixInitScreenPrivates(ScreenPtr pScreen, PrivatePtr *privates, void *addr, DevPrivateType type);
|
|
|
|
#define dixInitScreenPrivates(s, o, v, type) _dixInitScreenPrivates(s, &(o)->devPrivates, (v), type);
|
|
|
|
/*
|
|
* Allocates private data separately from main object.
|
|
*
|
|
* For objects created during server initialization, this allows those
|
|
* privates to be re-allocated as new private keys are registered.
|
|
*
|
|
* This includes screens, the serverClient, default colormaps and
|
|
* extensions entries.
|
|
*/
|
|
Bool
|
|
dixAllocatePrivates(PrivatePtr *privates, DevPrivateType type);
|
|
|
|
/*
|
|
* Frees separately allocated private data
|
|
*/
|
|
// FIXME: intel driver
|
|
extern _X_EXPORT void
|
|
dixFreePrivates(PrivatePtr privates, DevPrivateType type);
|
|
|
|
/*
|
|
* Initialize privates by zeroing them
|
|
*/
|
|
void
|
|
_dixInitPrivates(PrivatePtr *privates, void *addr, DevPrivateType type);
|
|
|
|
#define dixInitPrivates(o, v, type) _dixInitPrivates(&(o)->devPrivates, (v), type);
|
|
|
|
/*
|
|
* Clean up privates
|
|
*/
|
|
void
|
|
_dixFiniPrivates(PrivatePtr privates, DevPrivateType type);
|
|
|
|
#define dixFiniPrivates(o,t) _dixFiniPrivates((o)->devPrivates,t)
|
|
|
|
/*
|
|
* Allocates private data at object creation time. Required
|
|
* for almost all objects, except for the list described
|
|
* above for dixAllocatePrivates.
|
|
*/
|
|
void *_dixAllocateObjectWithPrivates(unsigned size,
|
|
unsigned clear,
|
|
unsigned offset,
|
|
DevPrivateType type);
|
|
|
|
#define dixAllocateObjectWithPrivates(t, type) (t *) _dixAllocateObjectWithPrivates(sizeof(t), sizeof(t), offsetof(t, devPrivates), type)
|
|
|
|
void
|
|
_dixFreeObjectWithPrivates(void *object, PrivatePtr privates,
|
|
DevPrivateType type);
|
|
|
|
#define dixFreeObjectWithPrivates(o,t) _dixFreeObjectWithPrivates(o, (o)->devPrivates, t)
|
|
|
|
/*
|
|
* Return size of privates for the specified type
|
|
*/
|
|
int
|
|
dixPrivatesSize(DevPrivateType type);
|
|
|
|
/*
|
|
* Dump out private stats to ErrorF
|
|
*/
|
|
extern void
|
|
dixPrivateUsage(void);
|
|
|
|
/*
|
|
* Resets the privates subsystem. dixResetPrivates is called from the main loop
|
|
* before each server generation. This function must only be called by main().
|
|
*/
|
|
void dixResetPrivates(void);
|
|
|
|
/*
|
|
* Looks up the offset where the devPrivates field is located.
|
|
*
|
|
* Returns -1 if the specified resource has no dev privates.
|
|
* The position of the devPrivates field varies by structure
|
|
* and calling code might only know the resource type, not the
|
|
* structure definition.
|
|
*/
|
|
int
|
|
dixLookupPrivateOffset(RESTYPE type);
|
|
|
|
/*
|
|
* Convenience macro for adding an offset to an object pointer
|
|
* when making a call to one of the devPrivates functions
|
|
*/
|
|
// unexport
|
|
#define DEVPRIV_AT(ptr, offset) ((PrivatePtr *)((char *)(ptr) + offset))
|
|
|
|
#endif /* PRIVATES_H */
|