1 /* 2 * Copyright (C) 2016 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #define FILE_DB_HASHSIZE 8192 18 19 struct files_db_s { 20 char *filename; 21 int fileno; 22 struct files_db_s *next; 23 size_t size; 24 int global_filename_ix; 25 }; 26 27 /* Lifted from Wikipedia Jenkins Hash function page */ 28 static inline u_int32_t 29 jenkins_one_at_a_time_hash(char *key, size_t len) 30 { 31 u_int32_t hash, i; 32 33 for(hash = i = 0; i < len; ++i) { 34 hash += key[i]; 35 hash += (hash << 10); 36 hash ^= (hash >> 6); 37 } 38 hash += (hash << 3); 39 hash ^= (hash >> 11); 40 hash += (hash << 15); 41 return hash; 42 } 43 44 static inline void 45 files_db_update_size(void *node, u_int64_t new_size) 46 { 47 struct files_db_s *db_node = (struct files_db_s *)node; 48 49 if (db_node->size < new_size) 50 db_node->size = new_size; 51 } 52 53 static inline void 54 files_db_add_to_size(void *node, u_int64_t size_incr) 55 { 56 ((struct files_db_s *)node)->size += size_incr; 57 } 58 59 static inline int 60 files_db_get_fileno(void *node) 61 { 62 return (((struct files_db_s *)node)->fileno); 63 } 64 65 static inline char * 66 files_db_get_filename(void *node) 67 { 68 return (((struct files_db_s *)node)->filename); 69 } 70 71 void *files_db_create_handle(void); 72 void files_db_write_objects(FILE *fp); 73 void *files_db_add(char *filename); 74 void *files_db_lookup(char *filename); 75 int files_db_get_total_obj(void); 76 void init_filename_cache(void); 77 void store_filename_cache(void); 78 79 int ioshark_write_header(FILE *fp, struct ioshark_header *header); 80 int ioshark_write_file_state(FILE *fp, struct ioshark_file_state *state); 81 int ioshark_write_file_op(FILE *fp, struct ioshark_file_operation *file_op); 82
