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
|
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is the Netscape Portable Runtime (NSPR).
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1999-2000
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
/*
* File: pipepong.c
*
* Description:
* This test runs in conjunction with the pipeping test.
* The pipeping test creates two pipes and redirects the
* stdin and stdout of this test to the pipes. Then the
* pipeping test writes "ping" to this test and this test
* writes "pong" back. Note that this test does not depend
* on NSPR at all. To run this pair of tests, just invoke
* pipeping.
*
* Tested areas: process creation, pipes, file descriptor
* inheritance, standard I/O redirection.
*/
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#define NUM_ITERATIONS 10
int main()
{
char buf[1024];
size_t nBytes;
int idx;
for (idx = 0; idx < NUM_ITERATIONS; idx++) {
memset(buf, 0, sizeof(buf));
nBytes = fread(buf, 1, 5, stdin);
fprintf(stderr, "pong process: received \"%s\"\n", buf);
if (nBytes != 5) {
fprintf(stderr, "pong process: expected 5 bytes but got %d bytes\n",
nBytes);
exit(1);
}
if (strcmp(buf, "ping") != 0) {
fprintf(stderr, "pong process: expected \"ping\" but got \"%s\"\n",
buf);
exit(1);
}
strcpy(buf, "pong");
fprintf(stderr, "pong process: sending \"%s\"\n", buf);
nBytes = fwrite(buf, 1, 5, stdout);
if (nBytes != 5) {
fprintf(stderr, "pong process: fwrite failed\n");
exit(1);
}
fflush(stdout);
}
return 0;
}
|
