1/*
2 Copyright (c) 2007-2016 Contributors as noted in the AUTHORS file
3
4 This file is part of libzmq, the ZeroMQ core engine in C++.
5
6 libzmq is free software; you can redistribute it and/or modify it under
7 the terms of the GNU Lesser General Public License (LGPL) as published
8 by the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
10
11 As a special exception, the Contributors give you permission to link
12 this library with independent modules to produce an executable,
13 regardless of the license terms of these independent modules, and to
14 copy and distribute the resulting executable under terms of your choice,
15 provided that you also meet, for each linked independent module, the
16 terms and conditions of the license of that module. An independent
17 module is a module which is not derived from or based on this library.
18 If you modify this library, you must extend this exception to your
19 version of the library.
20
21 libzmq is distributed in the hope that it will be useful, but WITHOUT
22 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
23 FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
24 License for more details.
25
26 You should have received a copy of the GNU Lesser General Public License
27 along with this program. If not, see <http://www.gnu.org/licenses/>.
28*/
29
30#include "../include/zmq.h"
31
32#include <stdio.h>
33#include <stdlib.h>
34#include <string.h>
35
36#include "platform.hpp"
37
38#if defined ZMQ_HAVE_WINDOWS
39#include <windows.h>
40#include <process.h>
41#else
42#include <pthread.h>
43#endif
44
45static size_t message_size;
46static int roundtrip_count;
47
48#if defined ZMQ_HAVE_WINDOWS
49static unsigned int __stdcall worker (void *ctx_)
50#else
51static void *worker (void *ctx_)
52#endif
53{
54 void *s;
55 int rc;
56 int i;
57 zmq_msg_t msg;
58
59 s = zmq_socket (ctx_, ZMQ_REP);
60 if (!s) {
61 printf ("error in zmq_socket: %s\n", zmq_strerror (errno));
62 exit (1);
63 }
64
65 rc = zmq_connect (s, "inproc://lat_test");
66 if (rc != 0) {
67 printf ("error in zmq_connect: %s\n", zmq_strerror (errno));
68 exit (1);
69 }
70
71 rc = zmq_msg_init (&msg);
72 if (rc != 0) {
73 printf ("error in zmq_msg_init: %s\n", zmq_strerror (errno));
74 exit (1);
75 }
76
77 for (i = 0; i != roundtrip_count; i++) {
78 rc = zmq_recvmsg (s, &msg, 0);
79 if (rc < 0) {
80 printf ("error in zmq_recvmsg: %s\n", zmq_strerror (errno));
81 exit (1);
82 }
83 rc = zmq_sendmsg (s, &msg, 0);
84 if (rc < 0) {
85 printf ("error in zmq_sendmsg: %s\n", zmq_strerror (errno));
86 exit (1);
87 }
88 }
89
90 rc = zmq_msg_close (&msg);
91 if (rc != 0) {
92 printf ("error in zmq_msg_close: %s\n", zmq_strerror (errno));
93 exit (1);
94 }
95
96 rc = zmq_close (s);
97 if (rc != 0) {
98 printf ("error in zmq_close: %s\n", zmq_strerror (errno));
99 exit (1);
100 }
101
102#if defined ZMQ_HAVE_WINDOWS
103 return 0;
104#else
105 return NULL;
106#endif
107}
108
109int main (int argc, char *argv[])
110{
111#if defined ZMQ_HAVE_WINDOWS
112 HANDLE local_thread;
113#else
114 pthread_t local_thread;
115#endif
116 void *ctx;
117 void *s;
118 int rc;
119 int i;
120 zmq_msg_t msg;
121 void *watch;
122 unsigned long elapsed;
123 double latency;
124
125 if (argc != 3) {
126 printf ("usage: inproc_lat <message-size> <roundtrip-count>\n");
127 return 1;
128 }
129
130 message_size = atoi (argv[1]);
131 roundtrip_count = atoi (argv[2]);
132
133 ctx = zmq_init (1);
134 if (!ctx) {
135 printf ("error in zmq_init: %s\n", zmq_strerror (errno));
136 return -1;
137 }
138
139 s = zmq_socket (ctx, ZMQ_REQ);
140 if (!s) {
141 printf ("error in zmq_socket: %s\n", zmq_strerror (errno));
142 return -1;
143 }
144
145 rc = zmq_bind (s, "inproc://lat_test");
146 if (rc != 0) {
147 printf ("error in zmq_bind: %s\n", zmq_strerror (errno));
148 return -1;
149 }
150
151#if defined ZMQ_HAVE_WINDOWS
152 local_thread = (HANDLE) _beginthreadex (NULL, 0, worker, ctx, 0, NULL);
153 if (local_thread == 0) {
154 printf ("error in _beginthreadex\n");
155 return -1;
156 }
157#else
158 rc = pthread_create (&local_thread, NULL, worker, ctx);
159 if (rc != 0) {
160 printf ("error in pthread_create: %s\n", zmq_strerror (rc));
161 return -1;
162 }
163#endif
164
165 rc = zmq_msg_init_size (&msg, message_size);
166 if (rc != 0) {
167 printf ("error in zmq_msg_init_size: %s\n", zmq_strerror (errno));
168 return -1;
169 }
170 memset (zmq_msg_data (&msg), 0, message_size);
171
172 printf ("message size: %d [B]\n", (int) message_size);
173 printf ("roundtrip count: %d\n", (int) roundtrip_count);
174
175 watch = zmq_stopwatch_start ();
176
177 for (i = 0; i != roundtrip_count; i++) {
178 rc = zmq_sendmsg (s, &msg, 0);
179 if (rc < 0) {
180 printf ("error in zmq_sendmsg: %s\n", zmq_strerror (errno));
181 return -1;
182 }
183 rc = zmq_recvmsg (s, &msg, 0);
184 if (rc < 0) {
185 printf ("error in zmq_recvmsg: %s\n", zmq_strerror (errno));
186 return -1;
187 }
188 if (zmq_msg_size (&msg) != message_size) {
189 printf ("message of incorrect size received\n");
190 return -1;
191 }
192 }
193
194 elapsed = zmq_stopwatch_stop (watch);
195
196 rc = zmq_msg_close (&msg);
197 if (rc != 0) {
198 printf ("error in zmq_msg_close: %s\n", zmq_strerror (errno));
199 return -1;
200 }
201
202 latency = (double) elapsed / (roundtrip_count * 2);
203
204#if defined ZMQ_HAVE_WINDOWS
205 DWORD rc2 = WaitForSingleObject (local_thread, INFINITE);
206 if (rc2 == WAIT_FAILED) {
207 printf ("error in WaitForSingleObject\n");
208 return -1;
209 }
210 BOOL rc3 = CloseHandle (local_thread);
211 if (rc3 == 0) {
212 printf ("error in CloseHandle\n");
213 return -1;
214 }
215#else
216 rc = pthread_join (local_thread, NULL);
217 if (rc != 0) {
218 printf ("error in pthread_join: %s\n", zmq_strerror (rc));
219 return -1;
220 }
221#endif
222
223 printf ("average latency: %.3f [us]\n", (double) latency);
224
225 rc = zmq_close (s);
226 if (rc != 0) {
227 printf ("error in zmq_close: %s\n", zmq_strerror (errno));
228 return -1;
229 }
230
231 rc = zmq_ctx_term (ctx);
232 if (rc != 0) {
233 printf ("error in zmq_ctx_term: %s\n", zmq_strerror (errno));
234 return -1;
235 }
236
237 return 0;
238}
239