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| Rev | Author | Line No. | Line |
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| 6146 | serge | 1 | /* |
| 2 | * Copyright (c) 2007 Intel Corporation. All Rights Reserved. |
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| 3 | * |
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| 4 | * Permission is hereby granted, free of charge, to any person obtaining a |
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| 5 | * copy of this software and associated documentation files (the |
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| 6 | * "Software"), to deal in the Software without restriction, including |
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| 7 | * without limitation the rights to use, copy, modify, merge, publish, |
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| 8 | * distribute, sub license, and/or sell copies of the Software, and to |
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| 9 | * permit persons to whom the Software is furnished to do so, subject to |
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| 10 | * the following conditions: |
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| 11 | * |
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| 12 | * The above copyright notice and this permission notice (including the |
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| 13 | * next paragraph) shall be included in all copies or substantial portions |
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| 14 | * of the Software. |
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| 15 | * |
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| 16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
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| 17 | * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
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| 18 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. |
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| 19 | * IN NO EVENT SHALL PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR |
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| 20 | * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, |
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| 21 | * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE |
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| 22 | * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
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| 23 | */ |
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| 24 | |||
| 25 | #ifndef _OBJECT_HEAP_H_ |
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| 26 | #define _OBJECT_HEAP_H_ |
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| 27 | |||
| 28 | #include "i965_mutext.h" |
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| 29 | |||
| 30 | #define OBJECT_HEAP_OFFSET_MASK 0x7F000000 |
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| 31 | #define OBJECT_HEAP_ID_MASK 0x00FFFFFF |
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| 32 | |||
| 33 | typedef struct object_base *object_base_p; |
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| 34 | typedef struct object_heap *object_heap_p; |
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| 35 | |||
| 36 | struct object_base { |
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| 37 | int id; |
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| 38 | int next_free; |
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| 39 | }; |
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| 40 | |||
| 41 | struct object_heap { |
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| 42 | int object_size; |
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| 43 | int id_offset; |
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| 44 | int next_free; |
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| 45 | int heap_size; |
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| 46 | int heap_increment; |
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| 47 | _I965Mutex mutex; |
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| 48 | void **bucket; |
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| 49 | int num_buckets; |
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| 50 | }; |
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| 51 | |||
| 52 | typedef int object_heap_iterator; |
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| 53 | |||
| 54 | /* |
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| 55 | * Return 0 on success, -1 on error |
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| 56 | */ |
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| 57 | int object_heap_init( object_heap_p heap, int object_size, int id_offset); |
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| 58 | |||
| 59 | /* |
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| 60 | * Allocates an object |
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| 61 | * Returns the object ID on success, returns -1 on error |
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| 62 | */ |
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| 63 | int object_heap_allocate( object_heap_p heap ); |
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| 64 | |||
| 65 | /* |
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| 66 | * Lookup an allocated object by object ID |
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| 67 | * Returns a pointer to the object on success, returns NULL on error |
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| 68 | */ |
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| 69 | object_base_p object_heap_lookup( object_heap_p heap, int id ); |
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| 70 | |||
| 71 | /* |
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| 72 | * Iterate over all objects in the heap. |
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| 73 | * Returns a pointer to the first object on the heap, returns NULL if heap is empty. |
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| 74 | */ |
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| 75 | object_base_p object_heap_first( object_heap_p heap, object_heap_iterator *iter ); |
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| 76 | |||
| 77 | /* |
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| 78 | * Iterate over all objects in the heap. |
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| 79 | * Returns a pointer to the next object on the heap, returns NULL if heap is empty. |
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| 80 | */ |
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| 81 | object_base_p object_heap_next( object_heap_p heap, object_heap_iterator *iter ); |
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| 82 | |||
| 83 | /* |
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| 84 | * Frees an object |
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| 85 | */ |
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| 86 | void object_heap_free( object_heap_p heap, object_base_p obj ); |
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| 87 | |||
| 88 | /* |
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| 89 | * Destroys a heap, the heap must be empty. |
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| 90 | */ |
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| 91 | void object_heap_destroy( object_heap_p heap ); |
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| 92 | |||
| 93 | #endif /* _OBJECT_HEAP_H_ */ |