scoutos / prex-0.9.0 / usr / test / pipe / pipe.c @ 03e9c04a
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/*
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* Copyright (c) 2008, Kohsuke Ohtani
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the author nor the names of any co-contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*
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* pipe.c - test unix pipe
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*/
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#include <sys/prex.h> |
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#include <sys/fcntl.h> |
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#include <sys/stat.h> |
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#include <sys/errno.h> |
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <string.h> |
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#include <unistd.h> |
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static void |
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test1(void)
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{ |
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int fd[2]; |
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char str[] = "test1"; |
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char buf[256]; |
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printf("pipe test program\n");
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if (pipe(fd) == -1) { |
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perror("pipe");
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exit(1);
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} |
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write(fd[1], str, sizeof(str)); |
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read(fd[0], buf, sizeof(buf)); |
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printf("str=%s\n", buf);
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} |
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static void |
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test2(void)
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{ |
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int fd[2]; |
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char str[] = "test2: hello!"; |
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char buf[256]; |
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printf("pipe test program\n");
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if (pipe(fd) == -1) { |
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perror("pipe");
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exit(1);
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} |
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switch(vfork()) {
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case -1: |
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perror("fork");
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break;
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case 0: /* child */ |
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close(fd[1]);
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read(fd[0], buf, 256); |
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close(fd[0]);
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printf("str=%s\n", buf);
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exit(0);
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break;
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default: /* parent */ |
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close(fd[0]);
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write(fd[1], str, sizeof(str)); |
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close(fd[1]);
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exit(0);
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break;
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} |
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} |
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int
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main(int argc, char *argv[]) |
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{ |
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test1(); |
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test2(); |
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return 0; |
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} |