WebSVN – HelenOS – Blame – /branches/network/uspace/srv/net/structures/int_map.h

Rev	Author	Line No.	Line
3666	mejdrech	1	/*
3912	mejdrech	2	* Copyright (c) 2009 Lukas Mejdrech
3666	mejdrech	3	* All rights reserved.
		4	*
		5	* Redistribution and use in source and binary forms, with or without
		6	* modification, are permitted provided that the following conditions
		7	* are met:
		8	*
		9	* - Redistributions of source code must retain the above copyright
		10	* notice, this list of conditions and the following disclaimer.
		11	* - Redistributions in binary form must reproduce the above copyright
		12	* notice, this list of conditions and the following disclaimer in the
		13	* documentation and/or other materials provided with the distribution.
		14	* - The name of the author may not be used to endorse or promote products
		15	* derived from this software without specific prior written permission.
		16	*
		17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
		18	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
		19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
		20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
		21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
		22	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
		23	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
		24	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
		25	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
		26	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
		27	*/
		28
		29	/** @addtogroup net
3912	mejdrech	30	* @{
3666	mejdrech	31	*/
		32
3912	mejdrech	33	/** @file
3666	mejdrech	34	*/
		35
		36	#ifndef __NET_INT_MAP_H__
		37	#define __NET_INT_MAP_H__
		38
		39	#include <errno.h>
		40	#include <malloc.h>
4192	mejdrech	41	#include <mem.h>
4576	mejdrech	42	#include <unistd.h>
3666	mejdrech	43
3846	mejdrech	44	#define INT_MAP_MAGIC_VALUE 0x11223344
3666	mejdrech	45	#define INT_MAP_ITEM_MAGIC_VALUE 0x55667788
		46
3846	mejdrech	47	#define INT_MAP_DECLARE( name, type ) \
		48	\
		49	typedef struct name name##_t; \
		50	typedef name##_t * name##_ref; \
		51	typedef struct name##_item name##_item_t; \
		52	typedef name##_item_t * name##_item_ref; \
		53	\
		54	struct name##_item{ \
		55	int key; \
		56	type * value; \
		57	int magic; \
		58	}; \
		59	\
		60	struct name{ \
4243	mejdrech	61	size_t size; \
3846	mejdrech	62	int next; \
		63	name##_item_ref items; \
		64	int magic; \
		65	}; \
		66	\
		67	int name##_add( name##_ref map, int key, type * value ); \
		68	void name##_clear( name##_ref map ); \
		69	int name##_count( name##_ref map ); \
		70	void name##_destroy( name##_ref map ); \
		71	void name##_exclude( name##_ref map, int key ); \
		72	void name##_exclude_index( name##_ref map, int index ); \
		73	type * name##_find( name##_ref map, int key ); \
		74	type * name##_get_index( name##_ref map, int index ); \
		75	int name##_initialize( name##_ref map ); \
		76	int name##_is_valid( name##_ref map ); \
		77	void name##_item_destroy( name##_item_ref item ); \
		78	int name##_item_is_valid( name##_item_ref item );
3666	mejdrech	79
3846	mejdrech	80	#define INT_MAP_IMPLEMENT( name, type ) \
		81	\
		82	int name##_add( name##_ref map, int key, type * value ){ \
		83	if( name##_is_valid( map )){ \
		84	if( map->next == ( map->size - 1 )){ \
		85	name##_item_ref tmp; \
		86	\
4197	mejdrech	87	tmp = ( name##_item_ref ) realloc( map->items, sizeof( name##_item_t ) * 2 * map->size ); \
3846	mejdrech	88	if( ! tmp ) return ENOMEM; \
		89	map->size *= 2; \
		90	map->items = tmp; \
		91	} \
		92	map->items[ map->next ].key = key; \
		93	map->items[ map->next ].value = value; \
		94	map->items[ map->next ].magic = INT_MAP_ITEM_MAGIC_VALUE; \
		95	++ map->next; \
		96	map->items[ map->next ].magic = 0; \
		97	return map->next - 1; \
		98	} \
		99	return EINVAL; \
		100	} \
		101	\
		102	void name##_clear( name##_ref map ){ \
		103	if( name##_is_valid( map )){ \
		104	int index; \
		105	\
		106	/* map->magic = 0;*/ \
		107	for( index = 0; index < map->next; ++ index ){ \
		108	if( name##_item_is_valid( &( map->items[ index ] ))){ \
		109	name##_item_destroy( &( map->items[ index ] )); \
		110	} \
		111	} \
		112	map->next = 0; \
		113	map->items[ map->next ].magic = 0; \
		114	/* map->magic = INT_MAP_MAGIC_VALUE;*/ \
		115	} \
		116	} \
		117	\
		118	int name##_count( name##_ref map ){ \
		119	return name##_is_valid( map ) ? map->next : -1; \
		120	} \
		121	\
		122	void name##_destroy( name##_ref map ){ \
		123	if( name##_is_valid( map )){ \
		124	int index; \
		125	\
		126	map->magic = 0; \
		127	for( index = 0; index < map->next; ++ index ){ \
		128	if( name##_item_is_valid( &( map->items[ index ] ))){ \
		129	name##_item_destroy( &( map->items[ index ] )); \
		130	} \
		131	} \
		132	free( map->items ); \
		133	} \
		134	} \
		135	\
		136	void name##_exclude( name##_ref map, int key ){ \
		137	if( name##_is_valid( map )){ \
		138	int index; \
		139	\
		140	for( index = 0; index < map->next; ++ index ){ \
3666	mejdrech	141	if( name##_item_is_valid( &( map->items[ index ] )) && ( map->items[ index ].key == key )){ \
3846	mejdrech	142	name##_item_destroy( &( map->items[ index ] )); \
		143	} \
		144	} \
		145	} \
		146	} \
		147	\
		148	void name##_exclude_index( name##_ref map, int index ){ \
3666	mejdrech	149	if( name##_is_valid( map ) && ( index >= 0 ) && ( index < map->next ) && name##_item_is_valid( &( map->items[ index ] ))){ \
3846	mejdrech	150	name##_item_destroy( &( map->items[ index ] )); \
		151	} \
		152	} \
		153	\
		154	type * name##_find( name##_ref map, int key ){ \
		155	if( name##_is_valid( map )){ \
		156	int index; \
		157	\
		158	for( index = 0; index < map->next; ++ index ){ \
3666	mejdrech	159	if( name##_item_is_valid( &( map->items[ index ] )) && ( map->items[ index ].key == key )){ \
3846	mejdrech	160	return map->items[ index ].value; \
		161	} \
		162	} \
		163	} \
		164	return NULL; \
		165	} \
		166	\
		167	type * name##_get_index( name##_ref map, int index ){ \
3666	mejdrech	168	if( name##_is_valid( map ) && ( index >= 0 ) && ( index < map->next ) && name##_item_is_valid( &( map->items[ index ] ))){ \
3846	mejdrech	169	return map->items[ index ].value; \
		170	} \
		171	return NULL; \
		172	} \
		173	\
		174	int name##_initialize( name##_ref map ){ \
		175	if( ! map ) return EINVAL; \
		176	map->size = 2; \
		177	map->next = 0; \
3666	mejdrech	178	map->items = ( name##_item_ref ) malloc( sizeof( name##_item_t ) * map->size ); \
3846	mejdrech	179	if( ! map->items ) return ENOMEM; \
		180	map->items[ map->next ].magic = 0; \
		181	map->magic = INT_MAP_MAGIC_VALUE; \
		182	return EOK; \
		183	} \
		184	\
		185	int name##_is_valid( name##_ref map ){ \
		186	return map && ( map->magic == INT_MAP_MAGIC_VALUE ); \
		187	} \
		188	\
		189	void name##_item_destroy( name##_item_ref item ){ \
		190	if( name##_item_is_valid( item )){ \
		191	item->magic = 0; \
		192	if( item->value ){ \
		193	free( item->value ); \
		194	item->value = NULL; \
		195	} \
		196	} \
		197	} \
		198	\
		199	int name##_item_is_valid( name##_item_ref item ){ \
		200	return item && ( item->magic == INT_MAP_ITEM_MAGIC_VALUE ); \
3666	mejdrech	201	}
		202
		203	#endif
		204
		205	/** @}
		206	*/
		207

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