nsprpub/pr/tests/pipepong.c@925c144e1f1f (annotated)
nsprpub/pr/tests/pipepong.c
Fri, 16 Jan 2015 18:13:44 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Fri, 16 Jan 2015 18:13:44 +0100
- branch
- TOR_BUG_9701
- changeset 14
- 925c144e1f1f
- permissions
- -rw-r--r--
Integrate suggestion from review to improve consistency with existing code.
| michael@0 | 1 | /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ |
| michael@0 | 2 | /* This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 3 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
| michael@0 | 4 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 5 | |
| michael@0 | 6 | /* |
| michael@0 | 7 | * File: pipepong.c |
| michael@0 | 8 | * |
| michael@0 | 9 | * Description: |
| michael@0 | 10 | * This test runs in conjunction with the pipeping test. |
| michael@0 | 11 | * The pipeping test creates two pipes and redirects the |
| michael@0 | 12 | * stdin and stdout of this test to the pipes. Then the |
| michael@0 | 13 | * pipeping test writes "ping" to this test and this test |
| michael@0 | 14 | * writes "pong" back. Note that this test does not depend |
| michael@0 | 15 | * on NSPR at all. To run this pair of tests, just invoke |
| michael@0 | 16 | * pipeping. |
| michael@0 | 17 | * |
| michael@0 | 18 | * Tested areas: process creation, pipes, file descriptor |
| michael@0 | 19 | * inheritance, standard I/O redirection. |
| michael@0 | 20 | */ |
| michael@0 | 21 | |
| michael@0 | 22 | #include <stdio.h> |
| michael@0 | 23 | #include <string.h> |
| michael@0 | 24 | #include <stdlib.h> |
| michael@0 | 25 | |
| michael@0 | 26 | #define NUM_ITERATIONS 10 |
| michael@0 | 27 | |
| michael@0 | 28 | int main(int argc, char **argv) |
| michael@0 | 29 | { |
| michael@0 | 30 | char buf[1024]; |
| michael@0 | 31 | size_t nBytes; |
| michael@0 | 32 | int idx; |
| michael@0 | 33 | |
| michael@0 | 34 | for (idx = 0; idx < NUM_ITERATIONS; idx++) { |
| michael@0 | 35 | memset(buf, 0, sizeof(buf)); |
| michael@0 | 36 | nBytes = fread(buf, 1, 5, stdin); |
| michael@0 | 37 | fprintf(stderr, "pong process: received \"%s\"\n", buf); |
| michael@0 | 38 | if (nBytes != 5) { |
| michael@0 | 39 | fprintf(stderr, "pong process: expected 5 bytes but got %d bytes\n", |
| michael@0 | 40 | nBytes); |
| michael@0 | 41 | exit(1); |
| michael@0 | 42 | } |
| michael@0 | 43 | if (strcmp(buf, "ping") != 0) { |
| michael@0 | 44 | fprintf(stderr, "pong process: expected \"ping\" but got \"%s\"\n", |
| michael@0 | 45 | buf); |
| michael@0 | 46 | exit(1); |
| michael@0 | 47 | } |
| michael@0 | 48 | |
| michael@0 | 49 | strcpy(buf, "pong"); |
| michael@0 | 50 | fprintf(stderr, "pong process: sending \"%s\"\n", buf); |
| michael@0 | 51 | nBytes = fwrite(buf, 1, 5, stdout); |
| michael@0 | 52 | if (nBytes != 5) { |
| michael@0 | 53 | fprintf(stderr, "pong process: fwrite failed\n"); |
| michael@0 | 54 | exit(1); |
| michael@0 | 55 | } |
| michael@0 | 56 | fflush(stdout); |
| michael@0 | 57 | } |
| michael@0 | 58 | |
| michael@0 | 59 | return 0; |
| michael@0 | 60 | } |
