56 lines
2.4 KiB
C
56 lines
2.4 KiB
C
/******************************************************************************
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*
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* Copyright (C) 2014 Google, Inc.
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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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******************************************************************************/
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#pragma once
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#include <stdbool.h>
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#include <stdint.h>
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#include "osi/include/fixed_queue.h"
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#define DISPATCHER_NAME_MAX 16
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typedef struct data_dispatcher_t data_dispatcher_t;
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typedef uintptr_t data_dispatcher_type_t;
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// Creates a new data dispatcher object, with the given name.
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// The returned object must be freed by calling |data_dispatcher_free|.
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// Returns NULL on failure. |name| may not be NULL.
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data_dispatcher_t *data_dispatcher_new(const char *name);
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// Frees a data dispatcher object created by |data_dispatcher_new|.
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// |data_dispatcher| may be NULL.
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void data_dispatcher_free(data_dispatcher_t *dispatcher);
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// Registers |type| and |queue| with the data dispatcher so that data
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// sent under |type| ends up in |queue|. If |type| is already registered,
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// it is replaced. If |queue| is NULL, the existing registration is
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// removed, if it exists. |dispatcher| may not be NULL.
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void data_dispatcher_register(data_dispatcher_t *dispatcher, data_dispatcher_type_t type, fixed_queue_t *queue);
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// Registers a default queue to send data to when there is not a specific
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// type/queue relationship registered. If a default queue is already registered,
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// it is replaced. If |queue| is NULL, the existing registration is
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// removed, if it exists. |dispatcher| may not be NULL.
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void data_dispatcher_register_default(data_dispatcher_t *dispatcher, fixed_queue_t *queue);
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// Dispatches |data| to the queue registered for |type|. If no such registration
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// exists, it is dispatched to the default queue if it exists.
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// Neither |dispatcher| nor |data| may be NULL.
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// Returns true if data dispatch was successful.
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bool data_dispatcher_dispatch(data_dispatcher_t *dispatcher, data_dispatcher_type_t type, void *data);
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