top!finded the bug
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4481d3d25d
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bfeb0df269
1 changed files with 20 additions and 8 deletions
28
src/sched.c
28
src/sched.c
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@ -29,7 +29,7 @@ struct scheduler {
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struct task_info *tasks;
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/* Position actuelle dans la pile */
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int top;
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int *top;
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};
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/* Ordonnanceur partagé */
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@ -87,7 +87,14 @@ sched_init(int nthreads, int qlen, taskfunc f, void *closure)
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}
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}
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sched.top = -1;
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// Initialisation du curseur suivant l'état de la pile de chaque processus
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if(!(sched.top = malloc(sched.nthreads * sizeof(int)))) {
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perror("Cursor top stack\n");
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return sched_init_cleanup(-1);
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}
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for(int i = 0; i < sched.nthreads; ++i) {
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sched.top[i] = -1;
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}
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if((sched.tasks = malloc(qlen * sizeof(struct task_info))) == NULL) {
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perror("Stack");
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@ -152,6 +159,11 @@ sched_init_cleanup(int ret_code)
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sched.tasks = NULL;
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}
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if(sched.top) {
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free(sched.top);
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sched.top = NULL;
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}
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return ret_code;
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}
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@ -160,14 +172,14 @@ sched_spawn(taskfunc f, void *closure, struct scheduler *s)
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{
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pthread_mutex_lock(&s->mutex[0]);
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if(s->top + 1 >= s->qlen) {
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if(s->top[0] + 1 >= s->qlen) {
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pthread_mutex_unlock(&s->mutex[0]);
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errno = EAGAIN;
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fprintf(stderr, "Stack is full\n");
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return -1;
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}
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s->tasks[++s->top] = (struct task_info){closure, f};
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s->tasks[++s->top[0]] = (struct task_info){closure, f};
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pthread_cond_signal(&s->cond[0]);
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pthread_mutex_unlock(&s->mutex[0]);
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@ -184,7 +196,7 @@ sched_worker(void *arg)
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pthread_mutex_lock(&s->mutex[0]);
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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[0] == -1) {
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s->nthsleep++;
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if(s->nthsleep == s->nthreads) {
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// Signal a tout les threads que il n'y a plus rien à faire
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@ -202,9 +214,9 @@ sched_worker(void *arg)
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}
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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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void *closure = s->tasks[s->top].closure;
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s->top--;
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taskfunc f = s->tasks[s->top[0]].f;
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void *closure = s->tasks[s->top[0]].closure;
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s->top[0]--;
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pthread_mutex_unlock(&s->mutex[0]);
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// Exécute la tâche
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