From 328ad0a41c6bdf596224ff2e9ab9c0fabde8634d Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 28 Apr 2024 09:32:08 +0200 Subject: Adding upstream version 0.8.0. Signed-off-by: Daniel Baumann --- lib/nghttp3_map.h | 137 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 137 insertions(+) create mode 100644 lib/nghttp3_map.h (limited to 'lib/nghttp3_map.h') diff --git a/lib/nghttp3_map.h b/lib/nghttp3_map.h new file mode 100644 index 0000000..79dff02 --- /dev/null +++ b/lib/nghttp3_map.h @@ -0,0 +1,137 @@ +/* + * nghttp3 + * + * Copyright (c) 2019 nghttp3 contributors + * Copyright (c) 2017 ngtcp2 contributors + * Copyright (c) 2012 nghttp2 contributors + * + * 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, sublicense, 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 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 + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 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. + */ +#ifndef NGHTTP3_MAP_H +#define NGHTTP3_MAP_H + +#ifdef HAVE_CONFIG_H +# include +#endif /* HAVE_CONFIG_H */ + +#include + +#include "nghttp3_mem.h" + +/* Implementation of unordered map */ + +typedef uint64_t nghttp3_map_key_type; + +typedef struct nghttp3_map_bucket { + uint32_t hash; + nghttp3_map_key_type key; + void *data; +} nghttp3_map_bucket; + +typedef struct nghttp3_map { + nghttp3_map_bucket *table; + const nghttp3_mem *mem; + size_t size; + uint32_t tablelen; + uint32_t tablelenbits; +} nghttp3_map; + +/* + * Initializes the map |map|. + */ +void nghttp3_map_init(nghttp3_map *map, const nghttp3_mem *mem); + +/* + * Deallocates any resources allocated for |map|. The stored entries + * are not freed by this function. Use nghttp3_map_each_free() to free + * each entries. + */ +void nghttp3_map_free(nghttp3_map *map); + +/* + * Deallocates each entries using |func| function and any resources + * allocated for |map|. The |func| function is responsible for freeing + * given the |data| object. The |ptr| will be passed to the |func| as + * send argument. The return value of the |func| will be ignored. + */ +void nghttp3_map_each_free(nghttp3_map *map, int (*func)(void *data, void *ptr), + void *ptr); + +/* + * Inserts the new |data| with the |key| to the map |map|. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGHTTP3_ERR_INVALID_ARGUMENT + * The item associated by |key| already exists. + * NGHTTP3_ERR_NOMEM + * Out of memory + */ +int nghttp3_map_insert(nghttp3_map *map, nghttp3_map_key_type key, void *data); + +/* + * Returns the data associated by the key |key|. If there is no such + * data, this function returns NULL. + */ +void *nghttp3_map_find(nghttp3_map *map, nghttp3_map_key_type key); + +/* + * Removes the data associated by the key |key| from the |map|. The + * removed data is not freed by this function. + * + * This function returns 0 if it succeeds, or one of the following + * negative error codes: + * + * NGHTTP3_ERR_INVALID_ARGUMENT + * The data associated by |key| does not exist. + */ +int nghttp3_map_remove(nghttp3_map *map, nghttp3_map_key_type key); + +/* + * Removes all entries from |map|. + */ +void nghttp3_map_clear(nghttp3_map *map); + +/* + * Returns the number of items stored in the map |map|. + */ +size_t nghttp3_map_size(nghttp3_map *map); + +/* + * Applies the function |func| to each data in the |map| with the + * optional user supplied pointer |ptr|. + * + * If the |func| returns 0, this function calls the |func| with the + * next data. If the |func| returns nonzero, it will not call the + * |func| for further entries and return the return value of the + * |func| immediately. Thus, this function returns 0 if all the + * invocations of the |func| return 0, or nonzero value which the last + * invocation of |func| returns. + * + * Don't use this function to free each data. Use + * nghttp3_map_each_free() instead. + */ +int nghttp3_map_each(nghttp3_map *map, int (*func)(void *data, void *ptr), + void *ptr); + +void nghttp3_map_print_distance(nghttp3_map *map); + +#endif /* NGHTTP3_MAP_H */ -- cgit v1.2.3