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#include <stdio.h>
#include <stdlib.h>
#include <pthread.h>
#include <string.h>
#include <windows.h>
#define psleep(sec) Sleep ((sec) * 1000)
#define NB_THREADS 5
struct MaillonToExecute
{
struct MaillonToExecute *MaillonNext;
char Commande[80];
};
/* Structure stockant les informations des threads et de la tache mère. */
typedef struct
{
char Commande[80];
BOOL KillAllThreads;
pthread_t Thread_Mere;
pthread_t Thread_Fils [NB_THREADS];
pthread_mutex_t Mutex_Commande;
pthread_cond_t Cond_Commande;
pthread_cond_t Cond_Exec;
pthread_cond_t Cond_Die;
}
Threads;
static Threads Threads_t ;
/* Fonction pour tirer un nombre au sort entre 0 et max. */
int get_random (int max)
{
double val;
val = (double) max * rand ();
val = val / (RAND_MAX + 1.0);
return ((int) val);
}
/* Fonction pour le thread mere. */
void * fn_getliste(void *p_data)
{
FILE *HandleRun;
char *FileName="FileCommand.txt";
char Line[80]=" ";
char *PtrString;
struct MaillonToExecute *ListeToExecute,*Maillon,*Ptr;
BOOL ReadOne=TRUE;
if(HandleRun=fopen(FileName,"rb"))
{
while(fgets(Line,sizeof(Line),HandleRun))
{
if(Maillon=(struct MaillonToExecute *)calloc(1,sizeof(struct MaillonToExecute)))
{
sprintf(Maillon->Commande,"%s",Line);
if(PtrString=strchr(Maillon->Commande,'\n')) *PtrString='\0';
if(PtrString=strchr(Maillon->Commande,'\r')) *PtrString='\0';
Maillon->MaillonNext=NULL;
if(ReadOne)
{
ListeToExecute=Maillon;
ReadOne=FALSE;
}else
{
Ptr->MaillonNext=Maillon;
}
Ptr=Maillon;
}
}
fclose(HandleRun);
}
printf("Fin lecture\n");
Maillon=ListeToExecute;
while(Maillon)
{
/* Debut de la zone protegee. */
pthread_mutex_lock(&Threads_t.Mutex_Commande);
pthread_cond_wait(&Threads_t.Cond_Commande,&Threads_t.Mutex_Commande);
sprintf(Threads_t.Commande,"%s",Maillon->Commande);
printf("Mise a dispo de la %s \n",Threads_t.Commande);
pthread_cond_signal(&Threads_t.Cond_Exec);
pthread_mutex_unlock (&Threads_t.Mutex_Commande);
/* Fin de la zone protegee. */
Ptr=Maillon;
Maillon=Maillon->MaillonNext;
free(Ptr);
}
Threads_t.KillAllThreads=TRUE;
pthread_cond_broadcast(&Threads_t.Cond_Die);
return NULL;
}
/* Fonction pour les threads. */
void * fn_threads(void *p_data)
{
int nb=(int)p_data,sec;
printf("Thread %ld\n",nb);
while(!Threads_t.KillAllThreads)
{
/* Debut de la zone protegee. */
pthread_mutex_lock(&Threads_t.Mutex_Commande);
if(!strncmp(Threads_t.Commande,"\0",1))
{
pthread_cond_signal(&Threads_t.Cond_Commande);
printf("thread %ld demande commande\n",nb);
pthread_cond_wait(&Threads_t.Cond_Exec,&Threads_t.Mutex_Commande);
printf("thread %ld continue\n",nb);
}
printf("Execution de la %s par thread %ld\n",Threads_t.Commande,nb);
strncpy(Threads_t.Commande,"\0",1);
pthread_mutex_unlock(&Threads_t.Mutex_Commande);
/* Fin de la zone protegee. */
sec=get_random(10);
printf("Attente pour thread %ld de %ld secondes\n",nb,sec);
psleep(sec);
printf("Fin attente pour thread %ld\n",nb);
}
return NULL;
}
int main (void)
{
int i = 0;
int ret = 0;
pthread_mutex_init(&Threads_t.Mutex_Commande,NULL);
pthread_cond_init(&Threads_t.Cond_Commande,NULL);
pthread_cond_init(&Threads_t.Cond_Exec,NULL);
strncpy(Threads_t.Commande,"\0",1);
Threads_t.KillAllThreads=FALSE;
/* Creation des threads. */
printf ("Creation du thread mere !\n");
ret=pthread_create(&Threads_t.Thread_Mere,NULL,fn_getliste,NULL);
/* Creation des threads si le process mère a fonctionné. */
if (!ret)
{
printf ("Creation des threads fils !\n");
for (i=0;i<NB_THREADS;i++)
{
ret=pthread_create(&Threads_t.Thread_Fils[i],NULL,fn_threads,(void *)i);
if (ret)
{
printf ("%s",strerror(ret));
}
}
}else
{
printf("%s",strerror(ret));
}
/* Attente de la fin des threads. */
i=0;
for (i=0;i<NB_THREADS;i++)
{
pthread_join(Threads_t.Thread_Fils[i],NULL);
printf("Fin du thread %ld\n",i);
}
pthread_join(Threads_t.Thread_Mere,NULL);
return EXIT_SUCCESS;
} |
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