#include <stdio.h>
#include <stdlib.h>

#include "ipcTools.h"


#include <sys/sem.h>

//toujours même probleme : le mutex attend et seulement apres envoi
int main(){
	int mutex;
	key_t cle;
	if(cle = ftok("/etc/passwd",0)== -1){
		perror("ftok failed");
		exit(1);
	}
	mutex = semalloc(cle, 0);
	if(mutex == -1){
		perror("semalloc failled");
		exit(2);
	}
	switch(fork()){
		case -1 : perror("fork failed"); 
				  exit(3);
		case 0 : P(mutex);
				 puts("mutex passé");
				 exit(0);
	}
	sleep(5);
	V(mutex);
	semfree(mutex);

	return 0;
}