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/**
* gammad -- Cooperative gamma server
* Copyright (C) 2016 Mattias Andrée (maandree@kth.se)
*
* This library 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.
*
* This library 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 this library. If not, see <http://www.gnu.org/licenses/>.
*/
#include "message.h"
#include <stddef.h>
/**
* List of all client's file descriptors
*
* Unused slots, with index less than `connections_used`,
* should have the value -1 (negative)
*/
extern int* connections;
/**
* The number of elements allocated for `connections`
*/
extern size_t connections_alloc;
/**
* The index of the first unused slot in `connections`
*/
extern size_t connections_ptr;
/**
* The index of the last used slot in `connections`, plus 1
*/
extern size_t connections_used;
/**
* The server connection's message buffer
*/
extern struct message server_message;
/**
* The clients' connections' message buffers
*/
extern struct message* client_messages;
/**
* Initialise the state of the connections
*
* @param Zero on success, -1 on error
*/
int server_initialise(void);
/**
* Destroy the state of the connections
*
* @param disconnect Disconnect all connections?
*/
void server_destroy(int disconnect);
/**
* Marshal the state of the connections
*
* @param buf Output buffer for the marshalled data,
* `NULL` to only measure how many bytes
* this buffer needs
* @return The number of marshalled bytes
*/
size_t server_marshal(void* buf);
/**
* Unmarshal the state of the connections
*
* @param buf Buffer for the marshalled data
* @return The number of unmarshalled bytes, 0 on error
*/
size_t server_unmarshal(const void* buf);
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