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

     2 /*

     3  * Copyright (c) 2006 INRIA

     4  * All rights reserved.

     5  *

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

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

     8  * published by the Free Software Foundation;

     9  *

    10  * This program is distributed in the hope that it will be useful,

    11  * but WITHOUT ANY WARRANTY; without even the implied warranty of

    12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

    13  * GNU General Public License for more details.

    14  *

    15  * You should have received a copy of the GNU General Public License

    16  * along with this program; if not, write to the Free Software

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

    18  *

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

    20  */

    21 #include "yans/wall-clock-ms.h"

    22 #include "yans/packet.h"

    23 #include "yans/chunk-constant-data.h"

    24 #include "yans/chunk-udp.h"

    25 #include "yans/chunk-ipv4.h"

    26 #include <iostream>

    27 

    28 using namespace yans;

    29 

    30 static void 

    31 bench_ptr_a (uint32_t n)

    32 {

    33 	ChunkConstantData data = ChunkConstantData (2000, 1);

    34 	ChunkUdp udp;

    35 	ChunkIpv4 ipv4;

    36 

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

    38 		Packet p;

    39 		p.add (&data);

    40 		p.add (&udp);

    41 		p.add (&ipv4);

    42 		Packet o = p;

    43 		o.peek (&ipv4);

    44 		o.remove (&ipv4);

    45 		o.peek (&udp);

    46 		o.remove (&udp);

    47 		o.peek (&data);

    48 		o.remove (&data);

    49 	}

    50 }

    51 

    52 static void 

    53 bench_ptr_b (uint32_t n)

    54 {

    55 	ChunkConstantData data = ChunkConstantData (2000, 1);

    56 	ChunkUdp udp;

    57 	ChunkIpv4 ipv4;

    58 

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

    60 		Packet p;

    61 		p.add (&data);

    62 		p.add (&udp);

    63 		p.add (&ipv4);

    64 	}

    65 }

    66 

    67 static void

    68 ptr_c2 (Packet p)

    69 {

    70 	ChunkConstantData data = ChunkConstantData (2000, 1);

    71 	ChunkUdp udp;

    72 

    73 	p.peek (&udp);

    74 	p.remove (&udp);

    75 	p.peek (&data);

    76 	p.remove (&data);

    77 }

    78 

    79 static void 

    80 ptr_c1 (Packet p)

    81 {

    82 	ChunkIpv4 ipv4;

    83 	p.peek (&ipv4);

    84 	p.remove (&ipv4);

    85 	ptr_c2 (p);

    86 }

    87 

    88 static void

    89 bench_ptr_c (uint32_t n)

    90 {

    91 	ChunkConstantData data = ChunkConstantData (2000, 1);

    92 	ChunkUdp udp;

    93 	ChunkIpv4 ipv4;

    94 

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

    96 		Packet p;

    97 		p.add (&data);

    98 		p.add (&udp);

    99 		p.add (&ipv4);

   100 		ptr_c1 (p);

   101 	}

   102 }

   103 

   104 

   105 static void

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

   107 {

   108 	WallClockMs time;

   109 	time.start ();

   110 	(*bench) (n);

   111 	unsigned long long delta_ms = time.end ();

   112 	double ps = n;

   113 	ps *= 1000;

   114 	ps /= delta_ms;

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

   116 }

   117 

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

   119 {

   120 	uint32_t n = 0;

   121 	while (argc > 0) {

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

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

   124 			n = atoi (n_ascii);

   125 		}

   126 		argc--;

   127 		argv++;

   128 	}

   129 

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

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

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

   133 

   134 	return 0;

   135 }