| /* |
| * Copyright (c) 2011 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. |
| * |
| * Authors: |
| * Waldo Bastian <waldo.bastian@intel.com> |
| * |
| */ |
| |
| #ifndef _OBJECT_HEAP_H_ |
| #define _OBJECT_HEAP_H_ |
| |
| #define OBJECT_HEAP_OFFSET_MASK 0x7F000000 |
| #define OBJECT_HEAP_ID_MASK 0x00FFFFFF |
| |
| typedef struct object_base_s *object_base_p; |
| typedef struct object_heap_s *object_heap_p; |
| |
| struct object_base_s { |
| int id; |
| int next_free; |
| }; |
| |
| struct object_heap_s { |
| int object_size; |
| int id_offset; |
| object_base_p *heap_index; |
| int next_free; |
| int heap_size; |
| int heap_increment; |
| }; |
| |
| 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); |
| |
| /* |
| * Suspend an object |
| * Suspended objects can not be looked up |
| */ |
| void object_heap_suspend_object(object_base_p obj, int suspend); |
| |
| #endif /* _OBJECT_HEAP_H_ */ |