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/*
* 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 <pthread.h>
/*
* Values
*/
#define OBJECT_HEAP_OFFSET_MASK 0x7F000000
#define OBJECT_HEAP_ID_MASK 0x00FFFFFF
#define OBJECT_HEAP_LAST -1
#define OBJECT_HEAP_ALLOCATED -2
/*
* Structures
*/
struct object_base {
int id;
int next_free;
};
struct object_heap {
pthread_mutex_t mutex;
int object_size;
int id_offset;
int next_free;
int heap_size;
int heap_increment;
void **bucket;
int num_buckets;
};
/*
* Functions
*/
int object_heap_init(struct object_heap *heap, int object_size, int id_offset);
int object_heap_allocate(struct object_heap *heap);
struct object_base *object_heap_lookup(struct object_heap *heap, int id);
struct object_base *object_heap_first(struct object_heap *heap, int *iterator);
struct object_base *object_heap_next(struct object_heap *heap, int *iterator);
void object_heap_free(struct object_heap *heap, struct object_base *object);
void object_heap_destroy(struct object_heap *heap);
#endif
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