test with exit condition
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parent
62502063f4
commit
f95dcaf491
2 changed files with 17 additions and 10 deletions
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@ -27,8 +27,8 @@ struct scheduler {
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/* Tâches */
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/* Tâches */
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taskinfo tasks[MAX_TASKS];
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taskinfo tasks[MAX_TASKS];
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/* Nombre de tâches en cours */
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/* Si tout est terminé */
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int ntasks;
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int exit;
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};
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};
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static inline int sched_default_threads(void) {
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static inline int sched_default_threads(void) {
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23
src/sched.c
23
src/sched.c
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@ -12,32 +12,40 @@ void *worker_routine(void *arg) {
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while (1) {
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while (1) {
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pthread_mutex_lock(&s->mutex);
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pthread_mutex_lock(&s->mutex);
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if (s->ntasks == 0) {
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if (s->exit == 1) {
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pthread_mutex_unlock(&s->mutex);
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pthread_mutex_unlock(&s->mutex);
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printf("finalement..rien a faire, ciao\n");
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break;
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break;
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}
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}
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// S'il on a rien à faire
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// S'il on a rien à faire
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if (s->top == -1) {
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if (s->top == -1) {
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// printf("attend..\n");
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pthread_cond_wait(&s->cond, &s->mutex);
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pthread_cond_wait(&s->cond, &s->mutex);
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pthread_mutex_unlock(&s->mutex);
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pthread_mutex_unlock(&s->mutex);
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// printf("reveillé!\n");
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continue;
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continue;
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}
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}
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// printf("lancement tâche #%d\n", s->top);
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// Extrait la tâche de la pile
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// Extrait la tâche de la pile
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taskfunc f = s->tasks[s->top].f;
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taskfunc f = s->tasks[s->top].f;
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void *closure = s->tasks[s->top].closure;
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void *closure = s->tasks[s->top].closure;
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s->top--;
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s->top--;
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s->ntasks--;
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pthread_cond_signal(&s->cond);
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pthread_mutex_unlock(&s->mutex);
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pthread_mutex_unlock(&s->mutex);
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// Exécute la tâche
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// Exécute la tâche
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f(closure, s);
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f(closure, s);
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// Signale que la tâche est terminée
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// Signale s'il n'y a plus rien à faire
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if (s->top == -1) {
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printf("va falloir partir\n");
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pthread_mutex_lock(&s->mutex);
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s->exit = 1;
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pthread_cond_broadcast(&s->cond);
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pthread_mutex_unlock(&s->mutex);
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}
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}
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}
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return NULL;
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return NULL;
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@ -53,7 +61,7 @@ int sched_init(int nthreads, int qlen, taskfunc f, void *closure) {
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(void)qlen;
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(void)qlen;
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sched.top = -1;
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sched.top = -1;
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sched.ntasks = 0;
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sched.exit = 0;
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if (pthread_mutex_init(&sched.mutex, NULL) != 0) {
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if (pthread_mutex_init(&sched.mutex, NULL) != 0) {
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fprintf(stderr, "Can't init mutex\n");
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fprintf(stderr, "Can't init mutex\n");
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@ -99,7 +107,6 @@ int sched_spawn(taskfunc f, void *closure, struct scheduler *s) {
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}
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}
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s->tasks[++s->top] = (taskinfo){f, closure};
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s->tasks[++s->top] = (taskinfo){f, closure};
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s->ntasks++;
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pthread_cond_signal(&s->cond);
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pthread_cond_signal(&s->cond);
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pthread_mutex_unlock(&s->mutex);
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pthread_mutex_unlock(&s->mutex);
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