| /* |
| * nghttp2 - HTTP/2 C Library |
| * |
| * 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 NGHTTP2_MAP_H |
| #define NGHTTP2_MAP_H |
| |
| #ifdef HAVE_CONFIG_H |
| # include <config.h> |
| #endif /* HAVE_CONFIG_H */ |
| |
| #include <nghttp2/nghttp2.h> |
| |
| #include "nghttp2_mem.h" |
| |
| /* Implementation of unordered map */ |
| |
| typedef int32_t nghttp2_map_key_type; |
| |
| typedef struct nghttp2_map_bucket { |
| uint32_t hash; |
| nghttp2_map_key_type key; |
| void *data; |
| } nghttp2_map_bucket; |
| |
| typedef struct nghttp2_map { |
| nghttp2_map_bucket *table; |
| nghttp2_mem *mem; |
| size_t size; |
| uint32_t tablelen; |
| uint32_t tablelenbits; |
| } nghttp2_map; |
| |
| /* |
| * Initializes the map |map|. |
| * |
| * This function returns 0 if it succeeds, or one of the following |
| * negative error codes: |
| * |
| * NGHTTP2_ERR_NOMEM |
| * Out of memory |
| */ |
| int nghttp2_map_init(nghttp2_map *map, nghttp2_mem *mem); |
| |
| /* |
| * Deallocates any resources allocated for |map|. The stored entries |
| * are not freed by this function. Use nghttp2_map_each_free() to free |
| * each entries. |
| */ |
| void nghttp2_map_free(nghttp2_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 nghttp2_map_each_free(nghttp2_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: |
| * |
| * NGHTTP2_ERR_INVALID_ARGUMENT |
| * The item associated by |key| already exists. |
| * NGHTTP2_ERR_NOMEM |
| * Out of memory |
| */ |
| int nghttp2_map_insert(nghttp2_map *map, nghttp2_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 *nghttp2_map_find(nghttp2_map *map, nghttp2_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: |
| * |
| * NGHTTP2_ERR_INVALID_ARGUMENT |
| * The data associated by |key| does not exist. |
| */ |
| int nghttp2_map_remove(nghttp2_map *map, nghttp2_map_key_type key); |
| |
| /* |
| * Removes all entries from |map|. |
| */ |
| void nghttp2_map_clear(nghttp2_map *map); |
| |
| /* |
| * Returns the number of items stored in the map |map|. |
| */ |
| size_t nghttp2_map_size(nghttp2_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 |
| * nghttp2_map_each_free() instead. |
| */ |
| int nghttp2_map_each(nghttp2_map *map, int (*func)(void *data, void *ptr), |
| void *ptr); |
| |
| void nghttp2_map_print_distance(nghttp2_map *map); |
| |
| #endif /* NGHTTP2_MAP_H */ |