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Diffstat (limited to 'vnfs/VESreporting_vFW5.0_DANOS/evel/evel-library/code/evel_library/hashtable.h')
-rw-r--r-- | vnfs/VESreporting_vFW5.0_DANOS/evel/evel-library/code/evel_library/hashtable.h | 97 |
1 files changed, 97 insertions, 0 deletions
diff --git a/vnfs/VESreporting_vFW5.0_DANOS/evel/evel-library/code/evel_library/hashtable.h b/vnfs/VESreporting_vFW5.0_DANOS/evel/evel-library/code/evel_library/hashtable.h new file mode 100644 index 00000000..8be17dc1 --- /dev/null +++ b/vnfs/VESreporting_vFW5.0_DANOS/evel/evel-library/code/evel_library/hashtable.h @@ -0,0 +1,97 @@ +#ifndef HASHTABLE_INCLUDED +#define HASHTABLE_INCLUDED + +/*************************************************************************//** + * + * Copyright © 2017 AT&T Intellectual Property. All rights reserved. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * + ****************************************************************************/ + +/**************************************************************************//** + * @file + * A simple hashtable. + * + * @note No thread protection so you will need to use appropriate + * synchronization if use spans multiple threads. +*****************************************************************************/ + +typedef struct entry_s { + char *key; + void *value; + struct entry_s *next; +} ENTRY_T; + +/**************************************************************************//** + * Hashtable structure + *****************************************************************************/ + +typedef struct hashtable_s { + size_t size; + struct entry_s **table; +} HASHTABLE_T; + +/**************************************************************************//** + * Hashtable initialization. + * + * Initialize the list supplied to be empty. + * + * @param size Size of hashtable + + * @returns Hashtable pointer +******************************************************************************/ +/* Create a new hashtable. */ +HASHTABLE_T *ht_create( size_t size ); + +/**************************************************************************//** + * Hash a string for a particular hash table. + * + * Initialize the list supplied to be empty. + * + * @param hashtable Pointer to the hashtable + * @param key String + + * @returns hashvalue +******************************************************************************/ +size_t ht_hash( HASHTABLE_T *hashtable, char *key ); + +/**************************************************************************//** + * Create a key-value pair. + * + * @param key key string + * @param value value string + * + * @returns hashtable entry +******************************************************************************/ +ENTRY_T *ht_newpair( char *key, void *value ); + +/**************************************************************************//** + * Insert a key-value pair into a hash table. + * + * @param key key string + * @param value value string + * + * @returns Nothing +******************************************************************************/ +void ht_set( HASHTABLE_T *hashtable, char *key, void *value ); + +/**************************************************************************//** + * Retrieve a key-value pair from a hash table. + * + * @param key key string + * + * @returns value string +******************************************************************************/ +void *ht_get( HASHTABLE_T *hashtable, char *key ); + +#endif |