summaryrefslogtreecommitdiff
path: root/perf/inproc_lat.cpp
blob: f4e0eaabb9b7a9d240e6fc8c08f6d5b0a337e555 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
/*
    Copyright (c) 2007-2011 iMatix Corporation
    Copyright (c) 2007-2011 Other contributors as noted in the AUTHORS file

    This file is part of 0MQ.

    0MQ is free software; you can redistribute it and/or modify it under
    the terms of the GNU Lesser General Public License as published by
    the Free Software Foundation; either version 3 of the License, or
    (at your option) any later version.

    0MQ 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 Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

#include "../include/zmq.h"
#include "../include/zmq_utils.h"

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <pthread.h>

static size_t message_size;
static int roundtrip_count;

static void *worker (void *ctx)
{
    void *s;
    int rc;
    int i;
    zmq_msg_t msg;

    s = zmq_socket (ctx, ZMQ_REP);
    if (!s) {
        printf ("error in zmq_socket: %s\n", zmq_strerror (errno));
        exit (1);
    }

    rc = zmq_connect (s, "inproc://lat_test");
    if (rc != 0) {
        printf ("error in zmq_connect: %s\n", zmq_strerror (errno));
        exit (1);
    }

    rc = zmq_msg_init (&msg);
    if (rc != 0) {
        printf ("error in zmq_msg_init: %s\n", zmq_strerror (errno));
        exit (1);
    }

    for (i = 0; i != roundtrip_count; i++) {
        rc = zmq_recvmsg (s, &msg, 0);
        if (rc < 0) {
            printf ("error in zmq_recvmsg: %s\n", zmq_strerror (errno));
            exit (1);
        }
        rc = zmq_sendmsg (s, &msg, 0);
        if (rc < 0) {
            printf ("error in zmq_sendmsg: %s\n", zmq_strerror (errno));
            exit (1);
        }
    }

    rc = zmq_msg_close (&msg);
    if (rc != 0) {
        printf ("error in zmq_msg_close: %s\n", zmq_strerror (errno));
        exit (1);
    }

    rc = zmq_close (s);
    if (rc != 0) {
        printf ("error in zmq_close: %s\n", zmq_strerror (errno));
        exit (1);
    }

    return NULL;
}

int main (int argc, char *argv [])
{
    pthread_t local_thread;
    void *ctx;
    void *s;
    int rc;
    int i;
    zmq_msg_t msg;
    void *watch;
    unsigned long elapsed;
    double latency;

    if (argc != 3) {
        printf ("usage: inproc_lat <message-size> <roundtrip-count>\n");
        return 1;
    }

    message_size = atoi (argv [1]);
    roundtrip_count = atoi (argv [2]);

    ctx = zmq_init (1);
    if (!ctx) {
        printf ("error in zmq_init: %s\n", zmq_strerror (errno));
        return -1;
    }

    s = zmq_socket (ctx, ZMQ_REQ);
    if (!s) {
        printf ("error in zmq_socket: %s\n", zmq_strerror (errno));
        return -1;
    }

    rc = zmq_bind (s, "inproc://lat_test");
    if (rc != 0) {
        printf ("error in zmq_bind: %s\n", zmq_strerror (errno));
        return -1;
    }

    rc = pthread_create (&local_thread, NULL, worker, ctx);
    if (rc != 0) {
        printf ("error in pthread_create: %s\n", zmq_strerror (rc));
        return -1;
    }

    rc = zmq_msg_init_size (&msg, message_size);
    if (rc != 0) {
        printf ("error in zmq_msg_init_size: %s\n", zmq_strerror (errno));
        return -1;
    }
    memset (zmq_msg_data (&msg), 0, message_size);

    printf ("message size: %d [B]\n", (int) message_size);
    printf ("roundtrip count: %d\n", (int) roundtrip_count);

    watch = zmq_stopwatch_start ();

    for (i = 0; i != roundtrip_count; i++) {
        rc = zmq_sendmsg (s, &msg, 0);
        if (rc < 0) {
            printf ("error in zmq_sendmsg: %s\n", zmq_strerror (errno));
            return -1;
        }
        rc = zmq_recvmsg (s, &msg, 0);
        if (rc < 0) {
            printf ("error in zmq_recvmsg: %s\n", zmq_strerror (errno));
            return -1;
        }
        if (zmq_msg_size (&msg) != message_size) {
            printf ("message of incorrect size received\n");
            return -1;
        }
    }

    elapsed = zmq_stopwatch_stop (watch);

    rc = zmq_msg_close (&msg);
    if (rc != 0) {
        printf ("error in zmq_msg_close: %s\n", zmq_strerror (errno));
        return -1;
    }

    latency = (double) elapsed / (roundtrip_count * 2);

    rc = pthread_join (local_thread, NULL);
    if (rc != 0) {
        printf ("error in pthread_join: %s\n", zmq_strerror (rc));
        return -1;
    }

    printf ("average latency: %.3f [us]\n", (double) latency);

    rc = zmq_close (s);
    if (rc != 0) {
        printf ("error in zmq_close: %s\n", zmq_strerror (errno));
        return -1;
    }

    rc = zmq_term (ctx);
    if (rc != 0) {
        printf ("error in zmq_term: %s\n", zmq_strerror (errno));
        return -1;
    }

    return 0;
}