1 | //pipetest.c: |
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2 | |
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3 | /* |
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4 | * Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2008 |
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5 | * |
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6 | * This file is part of roarclients a part of RoarAudio, |
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7 | * a cross-platform sound system for both, home and professional use. |
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8 | * See README for details. |
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9 | * |
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10 | * This file is free software; you can redistribute it and/or modify |
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11 | * it under the terms of the GNU General Public License version 3 |
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12 | * as published by the Free Software Foundation. |
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13 | * |
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14 | * RoarAudio is distributed in the hope that it will be useful, |
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15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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17 | * GNU General Public License for more details. |
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18 | * |
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19 | * You should have received a copy of the GNU General Public License |
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20 | * along with this software; see the file COPYING. If not, write to |
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21 | * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. |
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22 | * |
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23 | */ |
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24 | |
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25 | #include <roaraudio.h> |
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26 | #include <unistd.h> |
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27 | |
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28 | #define BUF_MAX 1024 |
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29 | |
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30 | int main (void) { |
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31 | #ifdef ROAR_HAVE_FORK |
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32 | char buf[BUF_MAX]; |
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33 | struct roar_vio_calls s0, s1; |
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34 | struct roar_vio_calls * me; |
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35 | |
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36 | if ( roar_vio_open_pipe(&s0, &s1, ROAR_VIO_PIPE_TYPE_AUTO, O_RDWR) == -1 ) { |
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37 | fprintf(stderr, "Error: can not create pipe\n"); |
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38 | } |
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39 | |
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40 | switch (fork()) { |
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41 | case 0: |
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42 | me = &s0; |
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43 | roar_vio_close(&s1); |
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44 | break; |
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45 | default: |
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46 | me = &s1; |
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47 | roar_vio_close(&s0); |
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48 | } |
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49 | |
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50 | snprintf(buf, BUF_MAX, "Hello from pid %i\n", getpid()); |
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51 | roar_vio_write(me, buf, strlen(buf)); |
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52 | |
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53 | buf[0] = 0; |
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54 | |
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55 | roar_vio_read(me, buf, BUF_MAX); |
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56 | printf("This is pid %i: %s", getpid(), buf); |
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57 | |
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58 | roar_vio_close(me); |
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59 | |
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60 | sleep(1); // wait for the other child... |
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61 | |
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62 | return 0; |
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63 | #else |
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64 | fprintf(stderr, "Error: no fork() support!\n"); |
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65 | return 1; |
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66 | #endif |
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67 | } |
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68 | |
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69 | //ll |
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