Tfe

Old stuff/ecole_etude_fac_de_pau/licence_3/projet_commun_se/backup16/barman.c

#include <stdio.h>
#include <stdlib.h>
#include <sys/stat.h>
#include <unistd.h>
#include <string.h>
#include <fcntl.h>
#include <signal.h>
#include <sys/types.h>
#include <errno.h>
#include <sys/shm.h>

#include "include/global.h"
#include "include/demandes.h"
#include "include/shm.h"
#include "include/bar_gerer_com.h"
#include "include/bar_security.h"
#include "include/bar_ordo.h"

#include "include/blonde.h"
#include "include/brune.h"

/*
Barman
Programme serveur, gerant des entrees sorties tcp/ip
Envoie des signaux aux tireuses pour les preparations
Renvoie les bieres servies via tcp/ip
*/

int main(int argc, char** argv)
{
    pid_t pid;
    if (setpgid(0,getpid()) == -1)
    {
	perror("barman.c setpgid");
	exit(-1);
    }

    
// Creation du tube, pour envoyer les bieres    
    struct stat sb;
    if (lstat("tube", &sb) == -1 && errno == ENOENT)
    {
	printf("Creation du tube absent\n");
        if (mkfifo("tube", S_IRUSR|S_IWUSR|0777) == -1)
	{
	    perror("mk fifo");
	    exit(-1);
	}
    }    
    if (lstat("tube", &sb) == -1)
    {
    	    perror("erreur sur les stats sur le tube");
	    exit(-1);
    }   
    if ((sb.st_mode & S_IFIFO) != S_IFIFO ) 
    {
	perror("fichier tube non fifo");
	exit(-1);
    }
        
    // Generation de la shm pour tout le monde
    if ((id_shm = gen_shm("./cle_bar",sizeof(flags)+8*sizeof(int)+sizeof(demande),(void*)&flg,1)) == -1)
    {
	perror("barman.c: generation de la shm");
	exit(-1);
    }
    // toute la shm a 0
    bzero(flg,sizeof(flg)+8*sizeof(int)+sizeof(demande));
    buffer = (demande*)(flg);

    


    
    // Forks successifs pour les differents modules
    printf("Loading Com ...\n");
    pid = fork();
    if (pid == -1)	{  perror("main: Fork loop error");	 exit(-1); }	
    if(pid == 0) 
    { 
	bar_gerer_com();  
	return (0); 
    } 
    printf("OK\n");
    printf("Loading Ordonnanceur ...\n");
    pid = fork();
    if (pid == -1)	
    {  
	perror("main: Fork loop error");
	exit(-1); 
    }	
    else if(pid == 0) 
    { 
	bar_ordo(); 
	return (0); 
    }
    printf("OK\n");
    
    printf("Loading Security ...\n");
    pid = fork();
    if (pid == -1)	
    {  
	perror("main: Fork loop error");
	exit(-1); 
    }	
    else if(pid == 0) 
    { 
	bar_security();  
	return (0); 
    }
    printf("OK\n");	



    while(1) { pause(); }
    return 0;
}