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|
#include<stdio.h>
#include<pthread.h>
#include <stdlib.h>
#include <string.h>
#include <windows.h>
#include <time.h>
#define psleep(sec) Sleep ((sec) * 1000)
struct MaillonToExecute
{
struct MaillonToExecute *MaillonNext;
char Commande[80];
};
/* definition d'une structure convenable */
typedef struct
{
char *p_commande;
BOOL *p_KillAllThreads;
pthread_mutex_t *p_commande_lock; /* le verrou de la variable s */
pthread_cond_t *p_commande_cond;
pthread_cond_t *p_exec_cond;
int n; /* le numero du thread */
} DATA;
/* Fonction pour le thread mere. */
void *Fn_Getliste(void *Arg)
{
DATA D = *(DATA *)Arg;
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(1)
{
/* Debut de la zone protegee. */
pthread_mutex_lock(D.p_commande_lock);
pthread_cond_wait(D.p_commande_cond,D.p_commande_lock);
if(*D.p_KillAllThreads)
{
printf("attente de DIE\n");
pthread_cond_broadcast(D.p_exec_cond);
}else
{
sprintf(D.p_commande,"%s",Maillon->Commande);
printf("Mise a dispo de la %s \n",D.p_commande);
Ptr=Maillon;
Maillon=Maillon->MaillonNext;
free(Ptr);
if(!Maillon) *D.p_KillAllThreads=TRUE;
pthread_cond_signal(D.p_exec_cond);
}
pthread_mutex_unlock (D.p_commande_lock);
/* Fin de la zone protegee. */
}
return NULL;
}
void *Fn_Threads(void *Arg)
{
DATA D = *(DATA *)Arg;
int sec;
time_t timestamp;
struct tm *t;
BOOL DieThread=FALSE;
timestamp=time(NULL);
t=localtime(×tamp);
sec=t->tm_sec;
printf("%02uh %02umin %02usec - Thread : %ld \n",t->tm_hour,t->tm_min,t->tm_sec,D.n);
while(!DieThread)
{
/* Debut de la zone protegee. */
pthread_mutex_lock(D.p_commande_lock);
if(!*D.p_commande)
{
pthread_cond_signal(D.p_commande_cond);
timestamp=time(NULL);
t=localtime(×tamp);
printf("%02uh %02umin %02usec - thread %ld demande commande\n",t->tm_hour,t->tm_min,t->tm_sec,D.n);
pthread_cond_wait(D.p_exec_cond,D.p_commande_lock);
if(*D.p_KillAllThreads==TRUE && !*D.p_commande)
{
printf("Thread num %ld DIE\n",D.n);
DieThread=TRUE;
pthread_mutex_unlock(D.p_commande_lock);
break;
}
}
timestamp=time(NULL);
t=localtime(×tamp);
printf("%02uh %02umin %02usec - Execution de la %s par thread %ld\n",t->tm_hour,t->tm_min,t->tm_sec,D.p_commande,D.n);
strncpy(D.p_commande,"\0",1);
pthread_mutex_unlock(D.p_commande_lock);
/* Fin de la zone protegee. */
if(D.n==1) sec=10;
if(D.n==2) sec=5;
if(D.n==3) sec=20;
if(D.n==4) sec=60;
printf("Attente pour thread %ld de %ld secondes\n",D.n,sec);
psleep(sec);
timestamp=time(NULL);
t=localtime(×tamp);
printf("%02uh %02umin %02usec - Fin attente pour thread %ld\n",t->tm_hour,t->tm_min,t->tm_sec,D.n);
}
printf("FIN %ld\n",D.n);
return NULL;
}
int main(int argc, char **argv)
{
pthread_t *ListeThread;
void *retval;
int cpu, i;
DATA *A;
double s=0; /* la variable partagee */
pthread_mutex_t s_lock;
pthread_cond_t s_cond_commande,s_cond_exec;
BOOL KillAllThreads=FALSE;
char Commande[80]="";
cpu = 5;
A = (DATA *)calloc(cpu+1, sizeof(DATA));
ListeThread = (pthread_t *) calloc(cpu, sizeof(pthread_t));
/* initialisation de la variable correspondant aux verrous et signaux*/
pthread_mutex_init(&s_lock,NULL);
pthread_cond_init(&s_cond_commande,NULL);
pthread_cond_init(&s_cond_exec,NULL);
for(i=0;i<cpu;i++)
{
A[i].n=i;
A[i].p_commande_lock=&s_lock;
A[i].p_exec_cond=&s_cond_exec;
A[i].p_commande_cond=&s_cond_commande;
A[i].p_KillAllThreads=&KillAllThreads;
A[i].p_commande=Commande;
if(i==0)
{
if(pthread_create(&ListeThread[i],NULL,Fn_Getliste,&A[i]))
{
fprintf(stderr, "%s: creation du thread impossible\n", argv[0]);
return(1);
}
Sleep(5000);
}else
{
if(pthread_create(&ListeThread[i],NULL,Fn_Threads,&A[i]))
{
fprintf(stderr, "%s: creation du thread impossible\n", argv[0]);
return(1);
}
}
}
for(i=1;i<cpu;i++)
{
if(pthread_join(ListeThread[i], &retval))
{
fprintf(stderr, "%s: synchronisation sur le thread impossible\n", argv[0]);
return(1);
}
}
pthread_cancel(ListeThread[0]);
printf("s = %f\n", s);
return(0);
} |
Threads pas vraiment threadé.
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