2 * Copyright (c) 2007 Intel Corporation. All Rights Reserved.
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the
6 * "Software"), to deal in the Software without restriction, including
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9 * permit persons to whom the Software is furnished to do so, subject to
10 * the following conditions:
12 * The above copyright notice and this permission notice (including the
13 * next paragraph) shall be included in all copies or substantial portions
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25 #ifndef _OBJECT_HEAP_H_
26 #define _OBJECT_HEAP_H_
28 #include "i965_mutext.h"
30 #define OBJECT_HEAP_OFFSET_MASK 0x7F000000
31 #define OBJECT_HEAP_ID_MASK 0x00FFFFFF
33 typedef struct object_base *object_base_p;
34 typedef struct object_heap *object_heap_p;
52 typedef int object_heap_iterator;
55 * Return 0 on success, -1 on error
57 int object_heap_init(object_heap_p heap, int object_size, int id_offset);
61 * Returns the object ID on success, returns -1 on error
63 int object_heap_allocate(object_heap_p heap);
66 * Lookup an allocated object by object ID
67 * Returns a pointer to the object on success, returns NULL on error
69 object_base_p object_heap_lookup(object_heap_p heap, int id);
72 * Iterate over all objects in the heap.
73 * Returns a pointer to the first object on the heap, returns NULL if heap is empty.
75 object_base_p object_heap_first(object_heap_p heap, object_heap_iterator *iter);
78 * Iterate over all objects in the heap.
79 * Returns a pointer to the next object on the heap, returns NULL if heap is empty.
81 object_base_p object_heap_next(object_heap_p heap, object_heap_iterator *iter);
86 void object_heap_free(object_heap_p heap, object_base_p obj);
89 * Destroys a heap, the heap must be empty.
91 void object_heap_destroy(object_heap_p heap);
93 #endif /* _OBJECT_HEAP_H_ */