Операционные системы. Теория и практика. Замятин А.В. - 270 стр.

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#include <strings.h>

#include <fstream.h>

#include <sys/stat.h>

#include <errno.h>

#include <fcntl.h>

#define MAXLINE 128

#define FILE_MODE (S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH)

#define FIFO1 “/tmp/fifo.1”

#define FIFO2 “/tmp/fifo.2”

int main(int argc, char **argv) {

int readfd = -1,writefd = -1;

pid_t childpid = 0;

ssize_t n;

char str[MAXLINE];

strcpy(str," some string to transmit ");

cout<<"Creating pipes..."<<endl;

unlink(FIFO1);

unlink(FIFO2);

if (mkfifo(FIFO1, FILE_MODE) == EEXIST) cout<<"\n Pipes is ex-

ists"<<endl;

if (mkfifo(FIFO2, FILE_MODE) == EEXIST) cout<<"\n Pipes is ex-

ists"<<endl;

cout<<"Pipes created..."<<endl;

writefd = open(FIFO2, O_WRONLY);

if ((writefd != -1)) {

cout<<"Transmitting the string..."<<endl;

write(writefd,str,strlen(str));

readfd = open(FIFO1, O_RDONLY);

cout<<"Waiting for respond..."<<endl;

while ((n = read(readfd,str, MAXLINE)) > 0) {

str[n] = 0;

cout<<"Received string - \""<<str<<"\""<<endl;