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/*
This file is part of GNUnet.
Copyright (C) 2023 GNUnet e.V.
GNUnet is free software: you can redistribute it and/or modify it
under the terms of the GNU Affero General Public License as published
by the Free Software Foundation, either version 3 of the License,
or (at your option) any later version.
GNUnet is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
SPDX-License-Identifier: AGPL3.0-or-later
*/
/**
* @author Tobias Frisch
* @file src/messenger/messenger_api_queue_messages.h
* @brief messenger api: client implementation of GNUnet MESSENGER service
*/
#ifndef GNUNET_MESSENGER_API_QUEUE_MESSAGES_H
#define GNUNET_MESSENGER_API_QUEUE_MESSAGES_H
#include "platform.h"
#include "gnunet_identity_service.h"
#include "gnunet_util_lib.h"
#include "messenger_api_message.h"
struct GNUNET_MESSENGER_QueueMessage
{
struct GNUNET_MESSENGER_QueueMessage *prev;
struct GNUNET_MESSENGER_QueueMessage *next;
struct GNUNET_IDENTITY_PrivateKey sender;
struct GNUNET_MESSENGER_Message *message;
};
struct GNUNET_MESSENGER_QueueMessages
{
struct GNUNET_MESSENGER_QueueMessage *head;
struct GNUNET_MESSENGER_QueueMessage *tail;
};
/**
* Initializes queue of messages as empty queue.
*
* @param[out] messages Queue of messages
*/
void
init_queue_messages (struct GNUNET_MESSENGER_QueueMessages *messages);
/**
* Clears the queue of messages.
*
* @param[in,out] messages Queue of messages
*/
void
clear_queue_messages (struct GNUNET_MESSENGER_QueueMessages *messages);
/**
* Adds a specific <i>message</i> to the end of the queue.
*
* @param[in,out] messages Queue of messages
* @param[in] sender Private sender key
* @param[in] message Message
*/
void
enqueue_to_messages (struct GNUNET_MESSENGER_QueueMessages *messages,
const struct GNUNET_IDENTITY_PrivateKey *sender,
const struct GNUNET_MESSENGER_Message *message);
/**
* Remove the message from the front of the queue and returns it.
*
* @param[in,out] messages Queue of messages
* @param[out] sender Private sender key
* @return Message from front or NULL
*/
struct GNUNET_MESSENGER_Message*
dequeue_from_messages (struct GNUNET_MESSENGER_QueueMessages *messages,
struct GNUNET_IDENTITY_PrivateKey *sender);
#endif //GNUNET_MESSENGER_API_QUEUE_MESSAGES_H
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