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klient.c
99 lines (83 loc) · 1.77 KB
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klient.c
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/**
* Łukasz Piesiewicz 334978
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/types.h>
#include <string.h>
#include "err.h"
#include "messageData.h"
int IPCs[2];
long type;
void getIPCs()
{
if ((IPCs[out] = msgget(S_KEY, 0)) == -1)
syserr("msgget");
if ((IPCs[in] = msgget(K_KEY, 0)) == -1)
syserr("msgget");
}
void sendBeginProtocol(pid_t myPid)
{
Mesg msg;
msg.mesg_type = server_t;
sprintf(msg.mesg_data, "%d\n", myPid);
if (msgsnd(IPCs[out], (char *) &msg, strlen(msg.mesg_data), 0) != 0)
syserr("msgsnd");
}
void requestResources(int k, int n)
{
Mesg msg;
msg.mesg_type = type;
sprintf(msg.mesg_data, requestFormat, k, n);
if (msgsnd(IPCs[out], (char *) &msg, strlen(msg.mesg_data), 0) != 0)
syserr("msgsnd");
}
void sendEndProtocol()
{
Mesg msg;
msg.mesg_type = type;
sprintf(msg.mesg_data, "FINISHED\n");
if (msgsnd(IPCs[out], (char *) &msg, strlen(msg.mesg_data), 0) != 0)
syserr("msgsnd");
}
pid_t getResources()
{
Mesg msg;
if (msgrcv(IPCs[in], &msg, MAXMESGDATA, type, 0) <= 0)
syserr("msgrcv");
if (strncmp(msg.mesg_data, ERROR, strlen(ERROR)) == 0)
syserr("Server Closed\n");
return atoi(msg.mesg_data);
}
void work(int s)
{
sleep(s);
}
void report(int k, int n, pid_t myPid, pid_t otherPid)
{
printf("%d %d %d %d\n", k, n, myPid, otherPid);
}
void reportFinish(pid_t myPid)
{
printf("%d KONIEC\n", myPid);
}
int main(int argc, char **argv)
{
if (argc != 4)
syserr("Wrong number of parameters");
pid_t myPid = getpid(), otherPid;
type = myPid;
int k = atoi(argv[1]);
int n = atoi(argv[2]);
int s = atoi(argv[3]);
getIPCs();
sendBeginProtocol(myPid);
requestResources(k, n);
otherPid = getResources();
report(k, n, myPid, otherPid);
work(s);
sendEndProtocol();
reportFinish(myPid);
return 0;
}