void k_queue_append_list(struct k_queue *queue, void *head, void *tail)
{
__ASSERT(head && tail, "invalid head or tail");
struct k_thread *first_thread, *thread;
unsigned int key;
key = irq_lock();
first_thread = _peek_first_pending_thread(&queue->wait_q);
while (head && ((thread = _unpend_first_thread(&queue->wait_q)))) {
prepare_thread_to_run(thread, head);
head = *(void **)head;
}
if (head) {
sys_slist_append_list(&queue->data_q, head, tail);
}
if (first_thread) {
if (!_is_in_isr() && _must_switch_threads()) {
(void)_Swap(key);
return;
}
} else {
if (handle_poll_event(queue)) {
(void)_Swap(key);
return;
}
}
irq_unlock(key);
}
void k_queue_insert(struct k_queue *queue, void *prev, void *data)
{
struct k_thread *first_pending_thread;
unsigned int key;
key = irq_lock();
first_pending_thread = _unpend_first_thread(&queue->wait_q);
if (first_pending_thread) {
prepare_thread_to_run(first_pending_thread, data);
if (!_is_in_isr() && _must_switch_threads()) {
(void)_Swap(key);
return;
}
} else {
sys_slist_insert(&queue->data_q, prev, data);
if (handle_poll_event(queue)) {
(void)_Swap(key);
return;
}
}
irq_unlock(key);
}
void k_timer_stop(struct k_timer *timer)
{
__ASSERT(!_is_in_isr(), "");
int key = irq_lock();
int inactive = (_abort_timeout(&timer->timeout) == _INACTIVE);
irq_unlock(key);
if (inactive) {
return;
}
if (timer->stop_fn) {
timer->stop_fn(timer);
}
key = irq_lock();
struct k_thread *pending_thread = _unpend_first_thread(&timer->wait_q);
if (pending_thread) {
_ready_thread(pending_thread);
}
if (_is_in_isr()) {
irq_unlock(key);
} else {
_reschedule_threads(key);
}
}
static void ready_one_thread(_wait_q_t *wq)
{
struct k_thread *th = _unpend_first_thread(wq);
if (th) {
_abort_thread_timeout(th);
_ready_thread(th);
}
}
int k_msgq_get(struct k_msgq *q, void *data, s32_t timeout)
{
__ASSERT(!_is_in_isr() || timeout == K_NO_WAIT, "");
unsigned int key = irq_lock();
struct k_thread *pending_thread;
int result;
if (q->used_msgs > 0) {
/* take first available message from queue */
memcpy(data, q->read_ptr, q->msg_size);
q->read_ptr += q->msg_size;
if (q->read_ptr == q->buffer_end) {
q->read_ptr = q->buffer_start;
}
q->used_msgs--;
/* handle first thread waiting to write (if any) */
pending_thread = _unpend_first_thread(&q->wait_q);
if (pending_thread) {
/* add thread's message to queue */
memcpy(q->write_ptr, pending_thread->base.swap_data,
q->msg_size);
q->write_ptr += q->msg_size;
if (q->write_ptr == q->buffer_end) {
q->write_ptr = q->buffer_start;
}
q->used_msgs++;
/* wake up waiting thread */
_set_thread_return_value(pending_thread, 0);
_abort_thread_timeout(pending_thread);
_ready_thread(pending_thread);
if (!_is_in_isr() && _must_switch_threads()) {
_Swap(key);
return 0;
}
}
result = 0;
} else if (timeout == K_NO_WAIT) {
/* don't wait for a message to become available */
result = -ENOMSG;
} else {
/* wait for get message success or timeout */
_pend_current_thread(&q->wait_q, timeout);
_current->base.swap_data = data;
return _Swap(key);
}
irq_unlock(key);
return result;
}
int k_msgq_put(struct k_msgq *q, void *data, s32_t timeout)
{
__ASSERT(!_is_in_isr() || timeout == K_NO_WAIT, "");
unsigned int key = irq_lock();
struct k_thread *pending_thread;
int result;
if (q->used_msgs < q->max_msgs) {
/* message queue isn't full */
pending_thread = _unpend_first_thread(&q->wait_q);
if (pending_thread) {
/* give message to waiting thread */
memcpy(pending_thread->base.swap_data, data,
q->msg_size);
/* wake up waiting thread */
_set_thread_return_value(pending_thread, 0);
_abort_thread_timeout(pending_thread);
_ready_thread(pending_thread);
if (!_is_in_isr() && _must_switch_threads()) {
_Swap(key);
return 0;
}
} else {
/* put message in queue */
memcpy(q->write_ptr, data, q->msg_size);
q->write_ptr += q->msg_size;
if (q->write_ptr == q->buffer_end) {
q->write_ptr = q->buffer_start;
}
q->used_msgs++;
}
result = 0;
} else if (timeout == K_NO_WAIT) {
/* don't wait for message space to become available */
result = -ENOMSG;
} else {
/* wait for put message success, failure, or timeout */
_pend_current_thread(&q->wait_q, timeout);
_current->base.swap_data = data;
return _Swap(key);
}
irq_unlock(key);
return result;
}
void k_msgq_purge(struct k_msgq *q)
{
unsigned int key = irq_lock();
struct k_thread *pending_thread;
/* wake up any threads that are waiting to write */
while ((pending_thread = _unpend_first_thread(&q->wait_q)) != NULL) {
_set_thread_return_value(pending_thread, -ENOMSG);
_abort_thread_timeout(pending_thread);
_ready_thread(pending_thread);
}
q->used_msgs = 0;
q->read_ptr = q->write_ptr;
_reschedule_threads(key);
}
