src/charon/threads/sender.c

@@ -0,0 +1,126 @@
+/**
+ * @file sender.c
+ *
+ * @brief Implementation of sender_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 "sender.h"
+
+#include <daemon.h>
+#include <network/socket.h>
+#include <network/packet.h>
+#include <queues/send_queue.h>
+#include <utils/logger_manager.h>
+
+
+typedef struct private_sender_t private_sender_t;
+
+/**
+ * Private data of a sender_t object.
+ */
+struct private_sender_t {
+	/**
+	 * Public part of a sender_t object.
+	 */
+	 sender_t public;
+
+	 /**
+	  * Assigned thread.
+	  */
+	 pthread_t assigned_thread;
+	 
+	 /**
+	  * @brief The thread function, sends out packets.
+	  * 
+	  * @param this 	calling object
+	  */
+	 void (*send_packets) (private_sender_t * this);
+	 
+	 /**
+	  * A logger for this sender_t object.
+	  */
+	 logger_t *logger;
+
+};
+
+/**
+ * Implementation of private_sender_t.send_packets.
+ */
+static void send_packets(private_sender_t * this)
+{
+	packet_t * current_packet;
+	status_t status;
+	
+	/* cancellation disabled by default */
+	pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, NULL);
+
+	this->logger->log(this->logger, CONTROL, "Sender thread running, thread_id %u", (int)pthread_self());
+
+	while (1)
+	{
+		current_packet = charon->send_queue->get(charon->send_queue);
+		this->logger->log(this->logger, CONTROL|LEVEL1, "Got a packet, sending it");
+		status = charon->socket->send(charon->socket,current_packet);
+		if (status != SUCCESS)
+		{
+			this->logger->log(this->logger, ERROR, "Sending failed, socket returned %s", 
+								mapping_find(status_m, status));
+		}
+		current_packet->destroy(current_packet);
+	}
+}
+
+/**
+ * Implementation of sender_t.destroy.
+ */
+static void destroy(private_sender_t *this)
+{
+	this->logger->log(this->logger, CONTROL | LEVEL1, "Going to terminate sender thread");
+	pthread_cancel(this->assigned_thread);
+
+	pthread_join(this->assigned_thread, NULL);
+	this->logger->log(this->logger, CONTROL | LEVEL1, "Sender thread terminated");
+
+	free(this);
+}
+
+/*
+ * Described in header.
+ */
+sender_t * sender_create()
+{
+	private_sender_t *this = malloc_thing(private_sender_t);
+
+	this->send_packets = send_packets;
+	this->public.destroy = (void(*)(sender_t*)) destroy;
+	
+	this->logger = logger_manager->get_logger(logger_manager, SENDER);
+
+	if (pthread_create(&(this->assigned_thread), NULL, (void*(*)(void*))this->send_packets, this) != 0)
+	{
+		this->logger->log(this->logger, ERROR, "Sender thread could not be created");
+		free(this);
+		charon->kill(charon, "Unable to create sender thread");
+	}
+
+	return &(this->public);
+}