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/**
* mds — A micro-display server
* Copyright © 2014, 2015 Mattias Andrée (maandree@member.fsf.org)
*
* This program 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 program 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 program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "comm.h"
#include <stdlib.h>
/**
* Initialise a connection descriptor with the the default values
*
* @param this The connection descriptor
*/
void libmds_connection_initialise(libmds_connection_t* restrict this)
{
this->socket_fd = -1;
this->message_id = UINT32_MAX;
this->client_id = NULL;
}
/**
* Allocate and initialise a connection descriptor
*
* @return The connection descriptor, `NULL` on error,
* `errno` will have been set accordingly on error
*
* @throws ENOMEM Out of memory, Possibly, the process hit the RLIMIT_AS or
* RLIMIT_DATA limit described in getrlimit(2).
*/
libmds_connection_t* libmds_connection_create(void)
{
libmds_connection_t* rc = malloc(sizeof(libmds_connection_t));
if (rc == NULL)
return NULL;
libmds_connection_initialise(rc);
return rc;
}
/**
* Release all resources held by a connection descriptor
*
* @param this The connection descriptor, may be `NULL`
*/
void libmds_connection_destroy(libmds_connection_t* restrict this)
{
if (this == NULL)
return;
/* TODO */
}
/**
* Release all resources held by a connection descriptor,
* and release the allocation of the connection descriptor
*
* @param this The connection descriptor, may be `NULL`
*/
void libmds_connection_free(libmds_connection_t* restrict this)
{
libmds_connection_destroy(this);
free(this);
}
int libmds_connection_send(libmds_connection_t* restrict this, const char* message, size_t length)
{
int r, saved_errno;
if (libmds_connection_lock(this))
return -1;
r = libmds_connection_send_unlocked(this, message, length);
saved_errno = errno;
(void) libmds_connection_unlock(this);
return errno = saved_errno, r;
}
int libmds_connection_send_unlocked(libmds_connection_t* restrict this, const char* message, size_t length)
{
return (void) this, (void) message, (void) length, 0; /* TODO */
}
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