mirror of
https://github.com/moparisthebest/spdylay
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118 lines
3.6 KiB
C
118 lines
3.6 KiB
C
/*
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* Spdylay - SPDY Library
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*
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* Copyright (c) 2012 Tatsuhiro Tsujikawa
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a 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, sublicense, 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 shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#ifndef SPDYLAY_MAP_H
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#define SPDYLAY_MAP_H
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#ifdef HAVE_CONFIG_H
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# include <config.h>
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#endif /* HAVE_CONFIG_H */
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#include <spdylay/spdylay.h>
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#include "spdylay_int.h"
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/* Implementation of ordered map */
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typedef uint32_t key_type;
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typedef uint32_t pri_type;
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typedef struct spdylay_map_entry {
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key_type key;
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void *val;
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struct spdylay_map_entry *left, *right;
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pri_type priority;
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} spdylay_map_entry;
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typedef struct {
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spdylay_map_entry *root;
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size_t size;
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} spdylay_map;
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/*
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* Initializes the map |map|.
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*/
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void spdylay_map_init(spdylay_map *map);
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/*
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* Deallocates any resources allocated for |map|. The stored items are
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* not freed by this function. Use spdylay_map_each() to free each
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* item.
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*/
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void spdylay_map_free(spdylay_map *map);
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/*
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* Inserts the new item |val| with the key |key| to the map |map|.
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*
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* This function returns 0 if it succeeds, or one of the following
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* negative error code:
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*
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* SPDYLAY_ERR_INVALID_ARGUMENT
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* The item associated by |key| already exists.
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*
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* SPDYLAY_ERR_NOMEM
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* Out of memory.
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*/
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int spdylay_map_insert(spdylay_map *map, key_type key, void *val);
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/*
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* Returns the item associated by the key |key|. If there is no such
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* item, this function returns NULL.
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*/
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void* spdylay_map_find(spdylay_map *map, key_type key);
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/*
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* Erases the item associated by the key |key|. The erased item is
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* not freed by this function.
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*
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* This function returns 0 if it succeeds, or one of the following
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* negative error codes:
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*
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* SPDYLAY_ERR_INVALID_ARGUMENT
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* The item associated by |key| does not exist.
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*/
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void spdylay_map_erase(spdylay_map *map, key_type key);
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/*
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* Returns the number of items stored in the map |map|.
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*/
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size_t spdylay_map_size(spdylay_map *map);
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/*
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* Applies the function |func| to each key/item pair in the map |map|
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* with the optional user supplied pointer |ptr|. This function is
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* useful to free item in the map.
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*
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* If the |func| returns 0, this function calls the |func| with the
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* next key and value pair. If the |func| returns nonzero, it will not
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* call the |func| for further key and value pair and return the
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* return value of the |func| immediately. Thus, this function
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* returns 0 if all the invocations of the |func| return 0, or nonzero
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* value which the last invocation of |func| returns.
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*/
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int spdylay_map_each(spdylay_map *map,
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int (*func)(key_type key, void *val, void *ptr),
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void *ptr);
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#endif /* SPDYLAY_MAP_H */
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