Elaborato_SO/src/F4Server.c

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#include <sys/types.h>
#include <sys/ipc.h>
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#include <sys/shm.h>
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#include <sys/stat.h>
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#include <signal.h>
#include <stdlib.h>
#include <stdio.h>
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#include <sys/msg.h>
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#include <sys/sem.h>
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#include <server.h>
#include <structures.h>
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#include <custom_sem.h>
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#include <custom_shm.h>
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#include <errExit.h>
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#include <forza4.h>
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int semid;
int msgid;
int shmid;
tile_t *board;
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void sigHandlerServer(int sig) {
if (sig == SIGINT) {
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//TODO:
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// per il secondo SIGINT basta modificare il sig in SIGTERM
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}
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if (sig == SIGTERM) {
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//TODO: killare figli
// msgq
if (msgctl(msgid, IPC_RMID, NULL) == -1) {
errExit("msgctl", "sigHandlerServer");
}
// sem
if (semctl(semid, 0, IPC_RMID, 0) == -1) {
errExit("semctl", "sigHandlerServer");
}
// shm
if (shmdt(board) == -1) {
errExit("shmdt", "sigHandlerServer");
}
if (shmctl(shmid, IPC_RMID, NULL) == -1)
errExit("shmctl", "SigHandlerSever");
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}
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exit(0);
}
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int main(int argc, char *argv[]){
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input_server_t input = check_input(argc, argv);
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// SIGNAL
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sigset_t mySet;
sigfillset(&mySet);
sigdelset(&mySet, SIGINT);
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sigdelset(&mySet, SIGTERM);
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sigprocmask(SIG_SETMASK, &mySet, NULL);
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if (signal(SIGINT, sigHandlerServer) == SIG_ERR) {
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errExit("signal SIGINT", "f4Server");
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}
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if (signal(SIGTERM, sigHandlerServer) == SIG_ERR) {
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errExit("signal SIGTERM", "f4Server");
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}
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//
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// MSGQ
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//TODO: forse bisogna fare il reset della shm, perche in teoria mette a 0 quando crea
// ma nel caso in cui il campo non si fosse chiuso per qualche motivo forse quando lo riapre non lo azzera
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key_t msgKey = ftok(KEYFILE, 'M');
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msgid = msgget(msgKey, IPC_CREAT | S_IRUSR | S_IWUSR);
if (msgid == -1){
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errExit("msgget", "F4Server");
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}
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// msg
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msg_t msg = {
.mtype = 1,
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.server_in = input,
.player_id = 0
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};
// msgsnd
if (msgsnd(msgid, &msg, sizeof(msg_t)-sizeof(long), 0) == -1) {
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errExit("msgsnd1", "F4Server");
}
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msg.player_id = 1;
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if (msgsnd(msgid, &msg, sizeof(msg_t)-sizeof(long), 0) == -1) {
errExit("msgsnd2", "F4Server");
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}
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//
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// SHM
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shmid = getShmid(input.rows, input.collums);
board = shmServerAt(shmid);
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//
// SEM
key_t semKey = ftok(KEYFILE, 'S');
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semid = semget(semKey, 2, S_IRUSR | S_IWUSR | IPC_CREAT);
if (semid == -1) {
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errExit("getsem", "F4Server");
}
resetServerSem(semid);
//
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semOp(semid, 0, 2); // aperurta semaforo per connessione dei due client
semOp(semid, 0, 0); // aspetto che si connettano i due client
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// faccio quello che devo fare
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int turns_left = input.rows * input.collums;
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int turn = 0;
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move_t move;
do {
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semOp(semid, turn, 1);
turn = (turn + 1) % 2; // FIXME: si puo scrivere meglio?
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if (msgrcv(msgid, &move, sizeof(move_t) - sizeof(long), 2, 0) == -1) {
errExit("msgrcv", "F4Client");
}
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} while (--turns_left && !checkWin(board, move.move, input.rows, input.collums));
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if (!turns_left && checkWinAll(board, input.rows, input.collums) == 0) {
//TODO: draw
} else {
//TODO: win
}
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//TODO: end of game
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return 0;
}