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/******************************************************************************
*
* Copyright (C) 2014 Google, Inc.
*
* 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.
*
******************************************************************************/
#define LOG_TAG "bt_osi_data_dispatcher"
#include <assert.h>
#include "osi/include/allocator.h"
#include "osi/include/data_dispatcher.h"
#include "osi/include/hash_functions.h"
#include "osi/include/hash_map.h"
#include "osi/include/osi.h"
#include "osi/include/log.h"
#define DEFAULT_TABLE_BUCKETS 10
struct data_dispatcher_t {
char *name;
hash_map_t *dispatch_table;
fixed_queue_t *default_queue; // We don't own this queue
};
data_dispatcher_t *data_dispatcher_new(const char *name) {
assert(name != NULL);
data_dispatcher_t *ret = osi_calloc(sizeof(data_dispatcher_t));
if (!ret) {
LOG_ERROR("%s unable to allocate memory for new data dispatcher.", __func__);
goto error;
}
ret->dispatch_table = hash_map_new(DEFAULT_TABLE_BUCKETS, hash_function_naive, NULL, NULL, NULL);
if (!ret->dispatch_table) {
LOG_ERROR("%s unable to create dispatch table.", __func__);
goto error;
}
ret->name = osi_strdup(name);
if (!ret->name) {
LOG_ERROR("%s unable to duplicate provided name.", __func__);
goto error;
}
return ret;
error:;
data_dispatcher_free(ret);
return NULL;
}
void data_dispatcher_free(data_dispatcher_t *dispatcher) {
if (!dispatcher)
return;
hash_map_free(dispatcher->dispatch_table);
if (dispatcher->name)
osi_free(dispatcher->name);
osi_free(dispatcher);
}
void data_dispatcher_register(data_dispatcher_t *dispatcher, data_dispatcher_type_t type, fixed_queue_t *queue) {
assert(dispatcher != NULL);
hash_map_erase(dispatcher->dispatch_table, (void *)type);
if (queue)
hash_map_set(dispatcher->dispatch_table, (void *)type, queue);
}
void data_dispatcher_register_default(data_dispatcher_t *dispatcher, fixed_queue_t *queue) {
assert(dispatcher != NULL);
dispatcher->default_queue = queue;
}
bool data_dispatcher_dispatch(data_dispatcher_t *dispatcher, data_dispatcher_type_t type, void *data) {
assert(dispatcher != NULL);
assert(data != NULL);
fixed_queue_t *queue = hash_map_get(dispatcher->dispatch_table, (void *)type);
if (!queue)
queue = dispatcher->default_queue;
if (queue)
fixed_queue_enqueue(queue, data);
else
LOG_WARN("%s has no handler for type (%zd) in data dispatcher named: %s", __func__, type, dispatcher->name);
return queue != NULL;
}
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