1 /****************************************************************************** 2 * 3 * Copyright (C) 2014 Google, Inc. 4 * 5 * Licensed under the Apache License, Version 2.0 (the "License"); 6 * you may not use this file except in compliance with the License. 7 * You may obtain a copy of the License at: 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 * 17 ******************************************************************************/ 18 19 #define LOG_TAG "bt_osi_data_dispatcher" 20 21 #include <assert.h> 22 23 #include "osi/include/allocator.h" 24 #include "osi/include/data_dispatcher.h" 25 #include "osi/include/hash_functions.h" 26 #include "osi/include/hash_map.h" 27 #include "osi/include/osi.h" 28 #include "osi/include/log.h" 29 30 #define DEFAULT_TABLE_BUCKETS 10 31 32 struct data_dispatcher_t { 33 char *name; 34 hash_map_t *dispatch_table; 35 fixed_queue_t *default_queue; // We don't own this queue 36 }; 37 38 data_dispatcher_t *data_dispatcher_new(const char *name) { 39 assert(name != NULL); 40 41 data_dispatcher_t *ret = osi_calloc(sizeof(data_dispatcher_t)); 42 if (!ret) { 43 LOG_ERROR("%s unable to allocate memory for new data dispatcher.", __func__); 44 goto error; 45 } 46 47 ret->dispatch_table = hash_map_new(DEFAULT_TABLE_BUCKETS, hash_function_naive, NULL, NULL, NULL); 48 if (!ret->dispatch_table) { 49 LOG_ERROR("%s unable to create dispatch table.", __func__); 50 goto error; 51 } 52 53 ret->name = osi_strdup(name); 54 if (!ret->name) { 55 LOG_ERROR("%s unable to duplicate provided name.", __func__); 56 goto error; 57 } 58 59 return ret; 60 61 error:; 62 data_dispatcher_free(ret); 63 return NULL; 64 } 65 66 void data_dispatcher_free(data_dispatcher_t *dispatcher) { 67 if (!dispatcher) 68 return; 69 70 hash_map_free(dispatcher->dispatch_table); 71 72 if (dispatcher->name) 73 osi_free(dispatcher->name); 74 75 osi_free(dispatcher); 76 } 77 78 void data_dispatcher_register(data_dispatcher_t *dispatcher, data_dispatcher_type_t type, fixed_queue_t *queue) { 79 assert(dispatcher != NULL); 80 81 hash_map_erase(dispatcher->dispatch_table, (void *)type); 82 if (queue) 83 hash_map_set(dispatcher->dispatch_table, (void *)type, queue); 84 } 85 86 void data_dispatcher_register_default(data_dispatcher_t *dispatcher, fixed_queue_t *queue) { 87 assert(dispatcher != NULL); 88 89 dispatcher->default_queue = queue; 90 } 91 92 bool data_dispatcher_dispatch(data_dispatcher_t *dispatcher, data_dispatcher_type_t type, void *data) { 93 assert(dispatcher != NULL); 94 assert(data != NULL); 95 96 fixed_queue_t *queue = hash_map_get(dispatcher->dispatch_table, (void *)type); 97 if (!queue) 98 queue = dispatcher->default_queue; 99 100 if (queue) 101 fixed_queue_enqueue(queue, data); 102 else 103 LOG_WARN("%s has no handler for type (%zd) in data dispatcher named: %s", __func__, type, dispatcher->name); 104 105 return queue != NULL; 106 } 107
