/* -*-	Mode:C++; c-basic-offset:8; tab-width:8; indent-tabs-mode:t -*- */

/*

 * Copyright (c) 2006 INRIA

 * All rights reserved.

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 as

 * published by the Free Software Foundation;

 *

 * 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, write to the Free Software

 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

 *

 * Author: Mathieu Lacage <mathieu.lacage@sophia.inria.fr>

 */

#include "ns3/wall-clock-ms.h"

#include "ns3/packet.h"

#include "ns3/chunk-constant-data.h"

#include "ns3/chunk-udp.h"

#include "ns3/chunk-ipv4.h"

#include <iostream>

static void 

bench_ptr_a (uint32_t n)

{

	ChunkConstantData data = ChunkConstantData (2000, 1);

	ChunkUdp udp;

	ChunkIpv4 ipv4;

	for (uint32_t i = 0; i < n; i++) {

		Packet p;

		p.add (&data);

		p.add (&udp);

		p.add (&ipv4);

		Packet o = p;

		o.peek (&ipv4);

		o.remove (&ipv4);

		o.peek (&udp);

		o.remove (&udp);

		o.peek (&data);

		o.remove (&data);

	}

}

static void 

bench_ptr_b (uint32_t n)

{

	ChunkConstantData data = ChunkConstantData (2000, 1);

	ChunkUdp udp;

	ChunkIpv4 ipv4;

	for (uint32_t i = 0; i < n; i++) {

		Packet p;

		p.add (&data);

		p.add (&udp);

		p.add (&ipv4);

	}

}

static void

ptr_c2 (Packet p)

{

	ChunkConstantData data = ChunkConstantData (2000, 1);

	ChunkUdp udp;

	p.peek (&udp);

	p.remove (&udp);

	p.peek (&data);

	p.remove (&data);

}

static void 

ptr_c1 (Packet p)

{

	ChunkIpv4 ipv4;

	p.peek (&ipv4);

	p.remove (&ipv4);

	ptr_c2 (p);

}

static void

bench_ptr_c (uint32_t n)

{

	ChunkConstantData data = ChunkConstantData (2000, 1);

	ChunkUdp udp;

	ChunkIpv4 ipv4;

	for (uint32_t i = 0; i < n; i++) {

		Packet p;

		p.add (&data);

		p.add (&udp);

		p.add (&ipv4);

		ptr_c1 (p);

	}

}

static void

run_bench (void (*bench) (uint32_t), uint32_t n, char const *name)

{

	WallClockMs time;

	time.start ();

	(*bench) (n);

	unsigned long long delta_ms = time.end ();

	double ps = n;

	ps *= 1000;

	ps /= delta_ms;

	std::cout << name<<"=" << ps << " packets/s" << std::endl;

}

int main (int argc, char *argv[])

{

	uint32_t n = 0;

	while (argc > 0) {

		if (strncmp ("--n=", argv[0],strlen ("--n=")) == 0) {

			char const *n_ascii = argv[0] + strlen ("--n=");

			n = atoi (n_ascii);

		}

		argc--;

		argv++;

	}

	run_bench (&bench_ptr_a, n, "a");

	run_bench (&bench_ptr_b, n, "b");

	run_bench (&bench_ptr_c, n, "c");

	return 0;

}