2 * Copyright (c) 2007 Intel Corporation. All Rights Reserved.
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5 * copy of this software and associated documentation files (the
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12 * The above copyright notice and this permission notice (including the
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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;
51 typedef int object_heap_iterator;
54 * Return 0 on success, -1 on error
56 int object_heap_init( object_heap_p heap, int object_size, int id_offset);
60 * Returns the object ID on success, returns -1 on error
62 int object_heap_allocate( object_heap_p heap );
65 * Lookup an allocated object by object ID
66 * Returns a pointer to the object on success, returns NULL on error
68 object_base_p object_heap_lookup( object_heap_p heap, int id );
71 * Iterate over all objects in the heap.
72 * Returns a pointer to the first object on the heap, returns NULL if heap is empty.
74 object_base_p object_heap_first( object_heap_p heap, object_heap_iterator *iter );
77 * Iterate over all objects in the heap.
78 * Returns a pointer to the next object on the heap, returns NULL if heap is empty.
80 object_base_p object_heap_next( object_heap_p heap, object_heap_iterator *iter );
85 void object_heap_free( object_heap_p heap, object_base_p obj );
88 * Destroys a heap, the heap must be empty.
90 void object_heap_destroy( object_heap_p heap );
92 #endif /* _OBJECT_HEAP_H_ */