forked from KolibriOS/kolibrios
117 lines
2.8 KiB
C
117 lines
2.8 KiB
C
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/**************************************************************************
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*
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* Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
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* All Rights Reserved.
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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 TUNGSTEN GRAPHICS 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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**************************************************************************/
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/**
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* @file
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* Generic handle table.
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*
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* @author José Fonseca <jrfonseca@tungstengraphics.com>
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*/
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#ifndef U_HANDLE_TABLE_H_
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#define U_HANDLE_TABLE_H_
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* Abstract data type to map integer handles to objects.
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*
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* Also referred as "pointer array".
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*/
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struct handle_table;
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struct handle_table *
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handle_table_create(void);
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/**
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* Set an optional destructor callback.
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*
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* If set, it will be called during handle_table_remove and
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* handle_table_destroy calls.
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*/
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void
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handle_table_set_destroy(struct handle_table *ht,
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void (*destroy)(void *object));
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/**
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* Add a new object.
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*
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* Returns a zero handle on failure (out of memory).
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*/
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unsigned
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handle_table_add(struct handle_table *ht,
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void *object);
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/**
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* Returns zero on failure (out of memory).
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*/
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unsigned
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handle_table_set(struct handle_table *ht,
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unsigned handle,
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void *object);
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/**
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* Fetch an existing object.
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*
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* Returns NULL for an invalid handle.
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*/
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void *
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handle_table_get(struct handle_table *ht,
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unsigned handle);
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void
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handle_table_remove(struct handle_table *ht,
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unsigned handle);
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void
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handle_table_destroy(struct handle_table *ht);
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unsigned
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handle_table_get_first_handle(struct handle_table *ht);
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unsigned
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handle_table_get_next_handle(struct handle_table *ht,
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unsigned handle);
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#ifdef __cplusplus
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}
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#endif
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#endif /* U_HANDLE_TABLE_H_ */
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