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
|
/*
Copyright (c) 2007-2013 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 "testutil.hpp"
const char *address = "tcp://127.0.0.1:6571";
#define NUM_MESSAGES 5
int main (void)
{
setup_test_environment ();
void *ctx = zmq_ctx_new ();
assert (ctx);
// Create and bind pull socket to receive messages
void *pull = zmq_socket (ctx, ZMQ_PULL);
assert (pull);
int rc = zmq_bind (pull, address);
assert (rc == 0);
int pid = fork ();
if (pid == 0) {
// Child process
// Immediately close parent sockets and context
zmq_close (pull);
zmq_term (ctx);
// Create new context, socket, connect and send some messages
void *child_ctx = zmq_ctx_new ();
assert (child_ctx);
void *push = zmq_socket (child_ctx, ZMQ_PUSH);
assert (push);
rc = zmq_connect (push, address);
assert (rc == 0);
int count;
for (count = 0; count < NUM_MESSAGES; count++)
zmq_send (push, "Hello", 5, 0);
zmq_close (push);
zmq_ctx_destroy (child_ctx);
exit (0);
}
else {
// Parent process
int count;
for (count = 0; count < NUM_MESSAGES; count++) {
char buffer [5];
int num_bytes = zmq_recv (pull, buffer, 5, 0);
assert (num_bytes == 5);
}
int child_status;
while (true) {
rc = waitpid (pid, &child_status, 0);
if (rc == -1 && errno == EINTR)
continue;
assert (rc > 0);
// Verify the status code of the child was zero
assert (WEXITSTATUS (child_status) == 0);
break;
}
exit (0);
}
return 0;
}
|
