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/*
* Implementation of an efficient array to store that we pinged something.
*/
/*
* Copyright © 2016-2017 The TokTok team.
* Copyright © 2013 Tox project.
*
* This file is part of Tox, the free peer to peer instant messenger.
*
* Tox is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Tox 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Tox. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef PING_ARRAY_H
#define PING_ARRAY_H
#include "network.h"
#ifndef PING_ARRAY_DEFINED
#define PING_ARRAY_DEFINED
typedef struct Ping_Array Ping_Array;
#endif /* PING_ARRAY_DEFINED */
/**
* Initialize a Ping_Array.
* size represents the total size of the array and should be a power of 2.
* timeout represents the maximum timeout in seconds for the entry.
*
* return 0 on success.
* return -1 on failure.
*/
struct Ping_Array *ping_array_new(uint32_t size, uint32_t timeout);
/**
* Free all the allocated memory in a Ping_Array.
*/
void ping_array_kill(struct Ping_Array *_array);
/**
* Add a data with length to the Ping_Array list and return a ping_id.
*
* return ping_id on success.
* return 0 on failure.
*/
uint64_t ping_array_add(struct Ping_Array *_array, const uint8_t *data, uint32_t length);
/**
* Check if ping_id is valid and not timed out.
*
* On success, copies the data into data of length,
*
* return length of data copied on success.
* return -1 on failure.
*/
int32_t ping_array_check(struct Ping_Array *_array, uint8_t *data, size_t length, uint64_t ping_id);
#endif
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