Linux ÏÂʵÏÖÁ½¸ö¹ÜµÀË«ÏòÊý¾ÝÁ÷

Ô­ÎĵØÖ·£ºhttp://www.wangzhongyuan.com/archives/488.html
ÒÔÏÂÊÇÒ»¸öLinux/UnixÏÂÓÉÁ½¸ö¹ÜµÀÌṩ˫ÏòÊý¾ÝÁ÷µÄC³ÌÐò£¬ÕâÊDzÙ×÷ϵͳ¿Î³ÌÖо­³£Ê¹ÓõĻù±¾³ÌÐò
#include <unistd.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <stdio.h>
#include <string.h>
int main()
{
int fd1[2],fd2[2],cld_pid,status;
char buf[200], len;

if (pipe(fd1) == -1) // ´´½¨¹ÜµÀ1
{
printf("creat pipe1 error\n");
exit(1);
}
if (pipe(fd2) == -1) // ´´½¨¹ÜµÀ2
{
printf("creat pipe2 error\n");
exit(1);
}

if ((cld_pid=fork()) == 0) //×Ó½ø³Ì
{
close(fd1[1]); // ×Ó½ø³Ì¹Ø±Õ¹ÜµÀ1µÄдÈë¶Ë
close(fd2[0]); // ×Ó½ø³Ì¹Ø±Õ¹ÜµÀ1µÄ¶Á³ö¶Ë

//×Ó½ø³Ì¶Á¹ÜµÀ1
len = read(fd1[0],buf,sizeof(buf));
printf("\nÕâÊÇÔÚ×Ó½ø³Ì£º×Ó½ø³Ì´Ó¹ÜµÀ1ÖжÁ³öµÄ×Ö·û´® -- %s",buf);

//×Ó½ø³Ìд¹ÜµÀ2
strcpy(buf,"×Ó½ø³ÌдÈë¹ÜµÀ2µÄ×Ö·û´®");
write(fd2[1],buf,strlen(buf));
printf("\nÕâÊÇÔÚ×Ó½ø³Ì£º×Ó½ø³Ì³É¹¦Ð´ÈëÈçÏÂÓï¾ä£º%s\n",buf);

exit(0);
}
else //¸¸½ø³Ì
{
close(fd1[0]); // ¸¸½ø³Ì¹Ø±Õ¹ÜµÀ1µÄ¶Á³ö¶Ë
close(fd2[1]); // ¸¸½ø³Ì¹Ø±Õ¹ÜµÀ2µÄдÈë¶Ë

//¸¸½ø³Ìд¹ÜµÀ1
strcpy(buf,"¸¸½ø³ÌдÈë¹ÜµÀ1µÄ×Ö·û´®");
write(fd1[1],buf, strlen(buf));
printf("miaojing\n");

//¸¸½ø³Ì¶Á¹ÜµÀ2
len = read(fd2[0],buf,sizeof(buf));
printf("\nÕâÊÇÔÚ¸¸½ø³Ì£º¸¸½ø³Ì´Ó¹ÜµÀ2ÖжÁ³öµÄ×Ö·û´® -- %s\n",buf);
exit(0);
}
}