2011-03-20 17:21:34 +01:00
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#include <unistd.h>
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2011-03-17 16:37:36 +01:00
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <sys/types.h>
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#include <sys/ipc.h>
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#include <sys/shm.h>
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2011-03-24 00:56:31 +01:00
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#include <curses.h>
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#include <ctype.h>
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2011-03-17 16:49:20 +01:00
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#include "constantes.h"
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2011-03-17 16:57:53 +01:00
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#include "types.h"
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2011-03-17 16:37:36 +01:00
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#include "sema.h"
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2011-03-24 00:56:31 +01:00
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WINDOW *creation_fenetre(int n,int d,char *t);
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2011-03-17 16:37:36 +01:00
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int main( int argc, char **argv)
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{
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2011-03-17 17:31:26 +01:00
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if(argc < 2) { printf("Usage %s numIPC\n", argv[0]); exit(EXIT_FAILURE); }
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2011-03-20 01:03:54 +01:00
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MEMP *memoireP;
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2011-03-24 00:56:31 +01:00
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MSG temp;
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int mutex_data, mutex_tpa, sem_global, continuer = 0, i=0, tete;
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2011-03-20 17:21:34 +01:00
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char c;
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MSG message;
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2011-03-24 00:56:31 +01:00
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const char CTRL_D = 4 ;
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int shmid;
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int shm_key = atoi(argv[1]);
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WINDOW * fenetre ;
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initscr() ; /* initialisation (obligatoire) de curses */
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noecho() ; /* suppression de l'echo des caracteres tapes*/
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cbreak() ; /* lecture non bufferisee */
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2011-03-20 17:21:34 +01:00
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key_t sem_key_data = MUTEX_DATA;
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key_t sem_key_glob = MUTEX_GLOB;
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key_t sem_key_tpa = MUTEX_TPA;
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2011-03-17 16:37:36 +01:00
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2011-03-20 01:21:44 +01:00
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shmid = shmget(shm_key, sizeof(MEMP), 0766 | IPC_CREAT);
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2011-03-24 00:56:31 +01:00
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2011-03-20 17:21:34 +01:00
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if (shmid == -1) { perror("shmget"); exit(EXIT_FAILURE); }
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2011-03-17 16:37:36 +01:00
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2011-03-20 17:21:34 +01:00
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if((memoireP = (MEMP *) shmat(shmid, 0 , 0766)) ==(void *) -1) { perror("shmat"); exit(EXIT_FAILURE); }
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if((mutex_data = open_sem( sem_key_data)) == -1) { perror("open_sem"); exit(EXIT_FAILURE); }
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if((mutex_tpa = open_sem( sem_key_tpa)) == -1) { perror("open_sem"); exit(EXIT_FAILURE); }
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2011-03-20 23:27:26 +01:00
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if((sem_global = open_sem( sem_key_glob)) == -1) { perror("open_sem"); exit(EXIT_FAILURE); }
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2011-03-17 16:37:36 +01:00
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2011-03-20 23:27:26 +01:00
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// sem_global est un sémaphore à MAX_PROD entrants.
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2011-03-24 00:56:31 +01:00
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//P(sem_global);
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2011-03-20 17:21:34 +01:00
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P(mutex_tpa);
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for(i = 0; i < MAX_PROD && memoireP->tpa[i] != -1 ; i++);
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V(mutex_tpa);
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if(memoireP->tpa[i] != -1) { exit(EXIT_FAILURE); }
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memoireP->tpa[i] = 0;
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2011-03-20 01:21:44 +01:00
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2011-03-24 00:56:31 +01:00
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fenetre = creation_fenetre(LINES,0,"PRODUCTEUR") ;
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// On quitte le producteur en tappant CTRL_D
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while (( c = wgetch(fenetre)) != CTRL_D)
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2011-03-20 17:21:34 +01:00
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{
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2011-03-24 00:56:31 +01:00
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2011-03-20 10:45:36 +01:00
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P(mutex_data);
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2011-03-20 17:21:34 +01:00
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if(((memoireP->queue -1) % MAX_BUF) != (memoireP->tete % MAX_BUF) )
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{
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2011-03-24 00:56:31 +01:00
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temp = (MSG) memoireP->f[memoireP->tete];
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temp.c = (char) c;
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temp.idp = i;
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tete = (int) memoireP->tete;
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memoireP->f[tete] = (MSG) temp;
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tete++;
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memoireP->tete = (int) tete;
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2011-03-20 17:21:34 +01:00
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}
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2011-03-20 10:45:36 +01:00
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V(mutex_data);
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2011-03-24 00:56:31 +01:00
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waddch(fenetre,c) ;
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wrefresh(fenetre) ;
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2011-03-20 17:21:34 +01:00
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}
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2011-03-20 23:27:26 +01:00
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// On a fini, on remet la valeur de l'indice du processus à -1 dans le tableau des producteurs
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2011-03-20 17:21:34 +01:00
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P(mutex_tpa);
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2011-03-20 23:27:26 +01:00
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memoireP->tpa[i] = -1;
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2011-03-20 17:21:34 +01:00
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V(mutex_tpa);
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2011-03-20 23:27:26 +01:00
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// On a fini, on libère l'accès à un autre producteur
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2011-03-24 00:56:31 +01:00
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//V(sem_global);
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endwin();
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2011-03-17 16:37:36 +01:00
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return (EXIT_SUCCESS);
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}
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2011-03-24 00:56:31 +01:00
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WINDOW *creation_fenetre(int n,int d,char *t)
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{
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WINDOW *cadre ; /* la fenetre pour le cadre */
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WINDOW *w ; /* la fenetre de dialogue */
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/* creation du cadre */
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cadre= newwin(n,COLS,d,0) ;
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box(cadre,0,0) ;
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mvwprintw(cadre,0,COLS/2-strlen(t)/2,t) ;
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wrefresh(cadre) ;
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/* creation de la fenetre de dialogue */
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w= newwin(n-2,COLS-2,d+1,1) ;
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idlok(w,TRUE) ;
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scrollok(w,TRUE) ; /* mise en place du defilement (scrolling) */
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wclear(w) ;
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wrefresh(w) ;
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return w ;
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}
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