forked from marfrit/libva-v4l2-request-fourier
Paul Kocialkowski
73 lines
2.1 KiB
C
73 lines
2.1 KiB
C
/*
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* Copyright (C) 2007 Intel Corporation
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sub license, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial portions
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* of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
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* IN NO EVENT SHALL PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR
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* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#ifndef OBJECT_HEAP_H
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#define OBJECT_HEAP_H
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#include <pthread.h>
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/*
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* Values
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*/
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#define OBJECT_HEAP_OFFSET_MASK 0x7F000000
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#define OBJECT_HEAP_ID_MASK 0x00FFFFFF
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#define OBJECT_HEAP_LAST -1
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#define OBJECT_HEAP_ALLOCATED -2
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/*
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* Structures
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*/
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struct object_base {
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int id;
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int next_free;
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};
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struct object_heap {
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pthread_mutex_t mutex;
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int object_size;
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int id_offset;
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int next_free;
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int heap_size;
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int heap_increment;
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void **bucket;
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int num_buckets;
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};
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/*
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* Functions
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*/
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int object_heap_init(struct object_heap *heap, int object_size, int id_offset);
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int object_heap_allocate(struct object_heap *heap);
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struct object_base *object_heap_lookup(struct object_heap *heap, int id);
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struct object_base *object_heap_first(struct object_heap *heap, int *iterator);
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struct object_base *object_heap_next(struct object_heap *heap, int *iterator);
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void object_heap_free(struct object_heap *heap, struct object_base *object);
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void object_heap_destroy(struct object_heap *heap);
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#endif
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