privates.h revision 040abec2534dadc53ebc8fa378ef03f4feecb7db
/***********************************************************
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.
******************************************************************/
#ifndef PRIVATES_H
#define PRIVATES_H 1
#include "dix.h"
#include "resource.h"
/*****************************************************************
* STUFF FOR PRIVATES
*****************************************************************/
typedef int *DevPrivateKey;
struct _Private;
typedef struct _Private PrivateRec;
/*
* Calling this is not necessary if only a pointer by itself is needed.
*/
extern int
/*
* Allocates a new private and attaches it to an existing object.
*/
extern pointer *
/*
* Look up a private pointer.
*/
/*
* Look up the address of a private pointer.
*/
pointer *
/*
* Set a private pointer.
*/
int
/*
* Register callbacks to be called on private allocation/freeing.
* The calldata argument to the callbacks is a PrivateCallbackPtr.
*/
typedef struct _PrivateCallback {
extern int
extern int
/*
* Frees private data.
*/
extern void
/*
* Resets the subsystem, called from the main loop.
*/
extern int
dixResetPrivates(void);
/*
* These next two functions are necessary because the position of
* the devPrivates field varies by structure and calling code might
* only know the resource type, not the structure definition.
*/
/*
* Looks up the offset where the devPrivates field is located.
* Returns -1 if no offset has been registered for the resource type.
*/
extern int
/*
* Specifies the offset where the devPrivates field is located.
* A negative value indicates no devPrivates field is available.
*/
extern int
/*
* Convenience macro for adding an offset to an object pointer
* when making a call to one of the devPrivates functions
*/
#endif /* PRIVATES_H */