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source: vbox/trunk/src/libs/xpcom18a4/nsprpub/pr/tests/pipepong.c@ 1

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1/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
2/* ***** BEGIN LICENSE BLOCK *****
3 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
4 *
5 * The contents of this file are subject to the Mozilla Public License Version
6 * 1.1 (the "License"); you may not use this file except in compliance with
7 * the License. You may obtain a copy of the License at
8 * http://www.mozilla.org/MPL/
9 *
10 * Software distributed under the License is distributed on an "AS IS" basis,
11 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
12 * for the specific language governing rights and limitations under the
13 * License.
14 *
15 * The Original Code is the Netscape Portable Runtime (NSPR).
16 *
17 * The Initial Developer of the Original Code is
18 * Netscape Communications Corporation.
19 * Portions created by the Initial Developer are Copyright (C) 1999-2000
20 * the Initial Developer. All Rights Reserved.
21 *
22 * Contributor(s):
23 *
24 * Alternatively, the contents of this file may be used under the terms of
25 * either the GNU General Public License Version 2 or later (the "GPL"), or
26 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
27 * in which case the provisions of the GPL or the LGPL are applicable instead
28 * of those above. If you wish to allow use of your version of this file only
29 * under the terms of either the GPL or the LGPL, and not to allow others to
30 * use your version of this file under the terms of the MPL, indicate your
31 * decision by deleting the provisions above and replace them with the notice
32 * and other provisions required by the GPL or the LGPL. If you do not delete
33 * the provisions above, a recipient may use your version of this file under
34 * the terms of any one of the MPL, the GPL or the LGPL.
35 *
36 * ***** END LICENSE BLOCK ***** */
37
38/*
39 * File: pipepong.c
40 *
41 * Description:
42 * This test runs in conjunction with the pipeping test.
43 * The pipeping test creates two pipes and redirects the
44 * stdin and stdout of this test to the pipes. Then the
45 * pipeping test writes "ping" to this test and this test
46 * writes "pong" back. Note that this test does not depend
47 * on NSPR at all. To run this pair of tests, just invoke
48 * pipeping.
49 *
50 * Tested areas: process creation, pipes, file descriptor
51 * inheritance, standard I/O redirection.
52 */
53
54#include <stdio.h>
55#include <string.h>
56#include <stdlib.h>
57
58#define NUM_ITERATIONS 10
59
60int main()
61{
62 char buf[1024];
63 size_t nBytes;
64 int idx;
65
66 for (idx = 0; idx < NUM_ITERATIONS; idx++) {
67 memset(buf, 0, sizeof(buf));
68 nBytes = fread(buf, 1, 5, stdin);
69 fprintf(stderr, "pong process: received \"%s\"\n", buf);
70 if (nBytes != 5) {
71 fprintf(stderr, "pong process: expected 5 bytes but got %d bytes\n",
72 nBytes);
73 exit(1);
74 }
75 if (strcmp(buf, "ping") != 0) {
76 fprintf(stderr, "pong process: expected \"ping\" but got \"%s\"\n",
77 buf);
78 exit(1);
79 }
80
81 strcpy(buf, "pong");
82 fprintf(stderr, "pong process: sending \"%s\"\n", buf);
83 nBytes = fwrite(buf, 1, 5, stdout);
84 if (nBytes != 5) {
85 fprintf(stderr, "pong process: fwrite failed\n");
86 exit(1);
87 }
88 fflush(stdout);
89 }
90
91 return 0;
92}
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