int main(int argc, const char *argv[])
{
if(argc!=2)
{
perror("\nIncorrect Usage!\n\tUse: Consumer [delay]\n\n\t\tWhere [delay] is sleeping time in secs.");
exit(EXIT_FAILURE);
}
int *shared_buffer = create_shared_mem_buffer();
int semid = create_semaphore_set();
char item;
int delay=atoi(argv[1]);
printf("\n--Configuration-------------------------------\n");
printf("Delay: %d\n",delay);
while(1) {
semop(semid, &downFull, 1);
semop(semid, &downMutex, 1);
item = remove_item(semid, shared_buffer);
//debug_buffer(shared_buffer);
semop(semid, &upMutex, 1);
semop(semid, &upEmpty, 1);
consume_item(item);
sleep(delay);
}
return EXIT_SUCCESS;
}
int main(int argc, char *argv[])
{
char filename[MAXSIZE];
char word1[MAXSIZE], word2[MAXSIZE];
int semid = create_semaphore_set();
int fifo;
if ((fifo = open("myfifo1", O_RDONLY)) < 0) {
printf("open: pipe doesn't exist");
exit(-1);
}
read(fifo, filename, MAXSIZE);
printf("filename: %s\n", filename);
read(fifo, word1, MAXSIZE);
printf("word1: %s\n", word1);
read(fifo, word2, MAXSIZE);
printf("word2: %s\n", word2);
close(fifo);
char arg[100];
strcat(arg, "s/");
strcat(arg, word1);
strcat(arg, "/");
strcat(arg, word2);
strcat(arg, "/g");
semop(semid, &Wait, 1);
// execv for sed
if (fork() == 0) {
execlp("sed", "sed", "-i", arg, filename, NULL);
}
wait(NULL);
semop(semid, &Signal, 1);
semop(semid, &signal1, 1);
return 0;
}
int main(int argc, char *argv[])
{
if (argc < 2) {
printf("format: %s <filename>\n", argv[0]);
exit(-1);
}
char filename[MAXSIZE];
strcpy(filename, argv[1]);
char word1[MAXSIZE], word2[MAXSIZE], word3[MAXSIZE];
int semid = create_semaphore_set();
scanf("%s", word1);
scanf("%s", word2);
scanf("%s", word3);
int fifo1, fifo2;
remove("myfifo1");
remove("myfifo2");
if (mkfifo("myfifo1", 0600))
{
printf("mkfifo: error creating named pipe");
exit(-1);
}
if((fifo1 = open("myfifo1", O_WRONLY)) < 0) {
printf("open: pipe doesn't exist");
exit(-1);
}
if (fork() == 0) {
execlp("./p2", "./p2", NULL);
}
write(fifo1, filename, MAXSIZE);
printf("P1: Sending filename to P2\n");
write(fifo1, word1, MAXSIZE);
printf("P1: Sending word1 to P2\n");
write(fifo1, word2, MAXSIZE);
printf("P1: Sending word2 to P2\n");
close(fifo1);
if (mkfifo("myfifo2", 0600))
{
printf("mkfifo: error creating named pipe");
exit(-1);
}
if((fifo2 = open("myfifo2", O_WRONLY)) < 0) {
printf("open: pipe doesn't exist");
exit(-1);
}
if (fork() == 0) {
execlp("./p3", "./p3", NULL);
}
write(fifo2, filename, MAXSIZE);
printf("P1: Sending filename to P3\n");
write(fifo2, word3, MAXSIZE);
printf("P1: Sending word3 to P3\n");
close(fifo2);
semop(semid, &wait1, 1);
semop(semid, &wait2, 1);
execlp("cat", "cat", filename, NULL);
return 0;
}
