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81 lines
1.9 KiB
81 lines
1.9 KiB
/* |
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* Copyright (C) 2016 The Android Open Source Project |
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* |
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* Licensed under the Apache License, Version 2.0 (the "License"); |
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* you may not use this file except in compliance with the License. |
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* You may obtain a copy of the License at |
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* |
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* http://www.apache.org/licenses/LICENSE-2.0 |
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* |
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* Unless required by applicable law or agreed to in writing, software |
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* distributed under the License is distributed on an "AS IS" BASIS, |
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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* See the License for the specific language governing permissions and |
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* limitations under the License. |
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*/ |
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#define FILE_DB_HASHSIZE 8192 |
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struct files_db_s { |
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char *filename; |
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int fileno; |
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struct files_db_s *next; |
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size_t size; |
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int global_filename_ix; |
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}; |
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/* Lifted from Wikipedia Jenkins Hash function page */ |
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static inline u_int32_t |
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jenkins_one_at_a_time_hash(char *key, size_t len) |
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{ |
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u_int32_t hash, i; |
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for(hash = i = 0; i < len; ++i) { |
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hash += key[i]; |
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hash += (hash << 10); |
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hash ^= (hash >> 6); |
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} |
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hash += (hash << 3); |
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hash ^= (hash >> 11); |
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hash += (hash << 15); |
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return hash; |
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} |
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static inline void |
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files_db_update_size(void *node, u_int64_t new_size) |
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{ |
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struct files_db_s *db_node = (struct files_db_s *)node; |
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if (db_node->size < new_size) |
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db_node->size = new_size; |
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} |
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static inline void |
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files_db_add_to_size(void *node, u_int64_t size_incr) |
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{ |
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((struct files_db_s *)node)->size += size_incr; |
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} |
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static inline int |
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files_db_get_fileno(void *node) |
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{ |
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return (((struct files_db_s *)node)->fileno); |
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} |
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static inline char * |
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files_db_get_filename(void *node) |
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{ |
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return (((struct files_db_s *)node)->filename); |
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} |
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void *files_db_create_handle(void); |
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void files_db_write_objects(FILE *fp); |
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void *files_db_add(char *filename); |
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void *files_db_lookup(char *filename); |
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int files_db_get_total_obj(void); |
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void init_filename_cache(void); |
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void store_filename_cache(void); |
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