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