94 lines
2.8 KiB
C
94 lines
2.8 KiB
C
/*
|
|
* Copyright (c) 2007 Intel Corporation. All Rights Reserved.
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a
|
|
* copy of this software and associated documentation files (the
|
|
* "Software"), to deal in the Software without restriction, including
|
|
* without limitation the rights to use, copy, modify, merge, publish,
|
|
* distribute, sub license, and/or sell copies of the Software, and to
|
|
* permit persons to whom the Software is furnished to do so, subject to
|
|
* the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice (including the
|
|
* next paragraph) shall be included in all copies or substantial portions
|
|
* of the Software.
|
|
*
|
|
* 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 NON-INFRINGEMENT.
|
|
* IN NO EVENT SHALL PRECISION INSIGHT AND/OR ITS SUPPLIERS 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 _OBJECT_HEAP_H_
|
|
#define _OBJECT_HEAP_H_
|
|
|
|
#include "i965_mutext.h"
|
|
|
|
#define OBJECT_HEAP_OFFSET_MASK 0x7F000000
|
|
#define OBJECT_HEAP_ID_MASK 0x00FFFFFF
|
|
|
|
typedef struct object_base *object_base_p;
|
|
typedef struct object_heap *object_heap_p;
|
|
|
|
struct object_base {
|
|
int id;
|
|
int next_free;
|
|
};
|
|
|
|
struct object_heap {
|
|
int object_size;
|
|
int id_offset;
|
|
int next_free;
|
|
int heap_size;
|
|
int heap_increment;
|
|
_I965Mutex mutex;
|
|
void **bucket;
|
|
int num_buckets;
|
|
};
|
|
|
|
typedef int object_heap_iterator;
|
|
|
|
/*
|
|
* Return 0 on success, -1 on error
|
|
*/
|
|
int object_heap_init( object_heap_p heap, int object_size, int id_offset);
|
|
|
|
/*
|
|
* Allocates an object
|
|
* Returns the object ID on success, returns -1 on error
|
|
*/
|
|
int object_heap_allocate( object_heap_p heap );
|
|
|
|
/*
|
|
* Lookup an allocated object by object ID
|
|
* Returns a pointer to the object on success, returns NULL on error
|
|
*/
|
|
object_base_p object_heap_lookup( object_heap_p heap, int id );
|
|
|
|
/*
|
|
* Iterate over all objects in the heap.
|
|
* Returns a pointer to the first object on the heap, returns NULL if heap is empty.
|
|
*/
|
|
object_base_p object_heap_first( object_heap_p heap, object_heap_iterator *iter );
|
|
|
|
/*
|
|
* Iterate over all objects in the heap.
|
|
* Returns a pointer to the next object on the heap, returns NULL if heap is empty.
|
|
*/
|
|
object_base_p object_heap_next( object_heap_p heap, object_heap_iterator *iter );
|
|
|
|
/*
|
|
* Frees an object
|
|
*/
|
|
void object_heap_free( object_heap_p heap, object_base_p obj );
|
|
|
|
/*
|
|
* Destroys a heap, the heap must be empty.
|
|
*/
|
|
void object_heap_destroy( object_heap_p heap );
|
|
|
|
#endif /* _OBJECT_HEAP_H_ */
|