void funcA()
{
int cptA = 0;
while ( cptA < 3 ) {
cptA ++;
ctx_switch();
}
}
void funcB()
{
int cptB = 1;
while ( cptB < 6 ) {
cptB += 2 ;
ctx_switch();
}
}
//------------------------------------------------------------------------
int kmain ( void )
{
init_hw();
create_process(funcB, NULL, STACK_SIZE);
create_process(funcA, NULL, STACK_SIZE);
start_sched();
ctx_switch();
/* Pas atteignable vu nos 2 fonctions */
return 0;
}
void sched_switch(thread_t *newtd) {
if (!sched_active)
return;
cs_enter();
thread_t *td = thread_self();
td->td_flags &= ~(TDF_SLICEEND | TDF_NEEDSWITCH);
if (td->td_state == TDS_RUNNING)
sched_add(td);
if (newtd == NULL)
newtd = sched_choose();
newtd->td_state = TDS_RUNNING;
cs_leave();
if (td != newtd)
ctx_switch(td, newtd);
}
static inline void _lthread_resume(struct lthread *lt)
{
struct lthread_sched *sched = THIS_SCHED;
struct lthread_stack *s;
uint64_t state = lt->state;
#if LTHREAD_DIAG
int init = 0;
#endif
sched->current_lthread = lt;
if (state & (BIT(ST_LT_CANCELLED) | BIT(ST_LT_EXITED))) {
/* if detached we can free the thread now */
if (state & BIT(ST_LT_DETACH)) {
_lthread_free(lt);
sched->current_lthread = NULL;
return;
}
}
if (state & BIT(ST_LT_INIT)) {
/* first time this thread has been run */
/* assign thread to this scheduler */
lt->sched = THIS_SCHED;
/* allocate stack */
s = _stack_alloc();
lt->stack_container = s;
_lthread_set_stack(lt, s->stack, s->stack_size);
/* allocate memory for TLS used by this thread */
_lthread_tls_alloc(lt);
lt->state = BIT(ST_LT_READY);
#if LTHREAD_DIAG
init = 1;
#endif
}
DIAG_EVENT(lt, LT_DIAG_LTHREAD_RESUMED, init, lt);
/* switch to the new thread */
ctx_switch(<->ctx, &sched->ctx);
/* If posting to a queue that could be read by another lcore
* we defer the queue write till now to ensure the context has been
* saved before the other core tries to resume it
* This applies to blocking on mutex, cond, and to set_affinity
*/
if (lt->pending_wr_queue != NULL) {
struct lthread_queue *dest = lt->pending_wr_queue;
lt->pending_wr_queue = NULL;
/* queue the current thread to the specified queue */
_lthread_queue_insert_mp(dest, lt);
}
sched->current_lthread = NULL;
}
inline void swap(cst_impl* to) {
ctx_switch(m_ctx, to->m_ctx, to);
}
void
yield()
{
ctx_switch();
}
