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kernel: const-qualify objects used to calculate delay values

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The internal API to measure time until a delay expires does not modify
the referenced timeout.  Make the functions that call it take pointers
to const objects, so that they can be used with pointer to
const-qualified containers.

Signed-off-by: Peter Bigot <peter.bigot@nordicsemi.no>
This commit is contained in:
Peter Bigot 2020-11-16 15:28:59 -06:00 • committed by Kumar Gala
commit 0ab314f705
3 changed files with 19 additions and 15 deletions
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24
include/kernel.h
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@ -556,10 +556,10 @@ extern k_ticks_t z_timeout_remaining(const struct _timeout *timeout);
* executes, in units of system ticks. If the thread is not waiting,
* it returns current system time.
*/
__syscall k_ticks_t k_thread_timeout_expires_ticks(struct k_thread *t);
__syscall k_ticks_t k_thread_timeout_expires_ticks(const struct k_thread *t);
static inline k_ticks_t z_impl_k_thread_timeout_expires_ticks(
struct k_thread *t)
const struct k_thread *t)
{
return z_timeout_expires(&t->base.timeout);
}
@ -571,10 +571,10 @@ static inline k_ticks_t z_impl_k_thread_timeout_expires_ticks(
* next executes, in units of system ticks. If the thread is not
* waiting, it returns zero.
*/
__syscall k_ticks_t k_thread_timeout_remaining_ticks(struct k_thread *t);
__syscall k_ticks_t k_thread_timeout_remaining_ticks(const struct k_thread *t);
static inline k_ticks_t z_impl_k_thread_timeout_remaining_ticks(
struct k_thread *t)
const struct k_thread *t)
{
return z_timeout_remaining(&t->base.timeout);
}
@ -1443,9 +1443,10 @@ __syscall uint32_t k_timer_status_sync(struct k_timer *timer);
* @param timer The timer object
* @return Uptime of expiration, in ticks
*/
__syscall k_ticks_t k_timer_expires_ticks(struct k_timer *timer);
__syscall k_ticks_t k_timer_expires_ticks(const struct k_timer *timer);
static inline k_ticks_t z_impl_k_timer_expires_ticks(struct k_timer *timer)
static inline k_ticks_t z_impl_k_timer_expires_ticks(
const struct k_timer *timer)
{
return z_timeout_expires(&timer->timeout);
}
@ -1457,9 +1458,10 @@ static inline k_ticks_t z_impl_k_timer_expires_ticks(struct k_timer *timer)
* next expires, in units of system ticks. If the timer is not
* running, it returns zero.
*/
__syscall k_ticks_t k_timer_remaining_ticks(struct k_timer *timer);
__syscall k_ticks_t k_timer_remaining_ticks(const struct k_timer *timer);
static inline k_ticks_t z_impl_k_timer_remaining_ticks(struct k_timer *timer)
static inline k_ticks_t z_impl_k_timer_remaining_ticks(
const struct k_timer *timer)
{
return z_timeout_remaining(&timer->timeout);
}
@ -2899,7 +2901,7 @@ static inline int k_delayed_work_submit(struct k_delayed_work *work,
* @return Uptime of execution (in ticks).
*/
static inline k_ticks_t k_delayed_work_expires_ticks(
struct k_delayed_work *work)
const struct k_delayed_work *work)
{
return z_timeout_expires(&work->timeout);
}
@ -2917,7 +2919,7 @@ static inline k_ticks_t k_delayed_work_expires_ticks(
* @return Remaining time (in ticks).
*/
static inline k_ticks_t k_delayed_work_remaining_ticks(
struct k_delayed_work *work)
const struct k_delayed_work *work)
{
return z_timeout_remaining(&work->timeout);
}
@ -2933,7 +2935,7 @@ static inline k_ticks_t k_delayed_work_remaining_ticks(
*
* @return Remaining time (in milliseconds).
*/
static inline int32_t k_delayed_work_remaining_get(struct k_delayed_work *work)
static inline int32_t k_delayed_work_remaining_get(const struct k_delayed_work *work)
{
return k_ticks_to_ms_floor32(z_timeout_remaining(&work->timeout));
}