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/**
* @file receiver.c
*
* @brief Implementation of receiver_t.
*
*/
/*
* Copyright (C) 2005 Jan Hutter, Martin Willi
* Hochschule fuer Technik Rapperswil
*
* 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 2 of the License, or (at your
* option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
*
* 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.
*/
#include <stdlib.h>
#include <pthread.h>
#include <unistd.h>
#include "receiver.h"
#include <globals.h>
#include <network/socket.h>
#include <network/packet.h>
#include <queues/job_queue.h>
#include <queues/jobs/job.h>
#include <queues/jobs/incoming_packet_job.h>
#include <utils/allocator.h>
#include <utils/logger_manager.h>
typedef struct private_receiver_t private_receiver_t;
/**
* Private data of a receiver object
*/
struct private_receiver_t {
/**
* Public part of a receiver object
*/
receiver_t public;
/**
* @brief Thread function started at creation of the receiver object.
*
* @param this assigned receiver object
*/
void (*receive_packets) (private_receiver_t *this);
/**
* Assigned thread to the receiver_t object
*/
pthread_t assigned_thread;
/**
* logger for the receiver
*/
logger_t *logger;
};
/**
* implements private_receiver_t.receive_packets
*/
static void receive_packets(private_receiver_t * this)
{
packet_t * current_packet;
job_t *current_job;
/* cancellation disabled by default */
pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, NULL);
this->logger->log(this->logger, CONTROL, "receiver thread running, pid %d", getpid());
while (1)
{
while (global_socket->receive(global_socket,¤t_packet) == SUCCESS)
{
this->logger->log(this->logger, CONTROL, "creating job from packet");
current_job = (job_t *) incoming_packet_job_create(current_packet);
global_job_queue->add(global_job_queue,current_job);
}
/* bad bad, rebuild the socket ? */
this->logger->log(this->logger, ERROR, "receiving from socket failed!");
}
}
/**
* Implementation of receiver_t's destroy function
*/
static void destroy(private_receiver_t *this)
{
this->logger->log(this->logger, CONTROL | MORE, "Going to terminate receiver thread");
pthread_cancel(this->assigned_thread);
pthread_join(this->assigned_thread, NULL);
this->logger->log(this->logger, CONTROL | MORE, "Receiver thread terminated");
global_logger_manager->destroy_logger(global_logger_manager, this->logger);
allocator_free(this);
}
/*
* see header
*/
receiver_t * receiver_create()
{
private_receiver_t *this = allocator_alloc_thing(private_receiver_t);
this->public.destroy = (void(*)(receiver_t*)) destroy;
this->receive_packets = receive_packets;
this->logger = global_logger_manager->create_logger(global_logger_manager, RECEIVER, NULL);
if (pthread_create(&(this->assigned_thread), NULL, (void*(*)(void*))this->receive_packets, this) != 0)
{
this->logger->log(this->logger, ERROR, "Receiver thread could not be started");
global_logger_manager->destroy_logger(global_logger_manager, this->logger);
allocator_free(this);
return NULL;
}
return &(this->public);
}
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