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Fix timer overflow 与 rt_tick_get_delta 替代 rt_tick_get() - tick_delta 获取增量 #10382

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Fix timer overflow 与 rt_tick_get_delta 替代 rt_tick_get() - tick_delta 获取增量 #10382

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735b65a
rt_tick_get_delta 替代 rt_tick_get() - tick_delta 获取增量
htl5241 Jun 10, 2025
823edfd
修复溢出，删除冗余
htl5241 Jun 10, 2025
aca60b5
更新
htl5241 Jun 10, 2025
f618aca
删除小心添加的空格
htl5241 Jun 10, 2025
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44 changes: 20 additions & 24 deletions src/ipc.c
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Original file line number Diff line number Diff line change
Expand Up @@ -2567,7 +2567,7 @@ static rt_err_t _rt_mb_send_wait(rt_mailbox_t mb,
{
struct rt_thread *thread;
rt_base_t level;
rt_uint32_t tick_delta;
rt_uint32_t tick_stamp;
rt_err_t ret;

/* parameter check */
Expand All @@ -2577,8 +2577,8 @@ static rt_err_t _rt_mb_send_wait(rt_mailbox_t mb,
/* current context checking */
RT_DEBUG_SCHEDULER_AVAILABLE(timeout != 0);

/* initialize delta tick */
tick_delta = 0;
/* initialize tick_stamp tick */
tick_stamp = 0;
/* get current thread */
thread = rt_thread_self();

Expand Down Expand Up @@ -2622,7 +2622,7 @@ static rt_err_t _rt_mb_send_wait(rt_mailbox_t mb,
if (timeout > 0)
{
/* get the start tick of timer */
tick_delta = rt_tick_get();
tick_stamp = rt_tick_get();

LOG_D("mb_send_wait: start timer of thread:%s",
thread->parent.name);
Expand Down Expand Up @@ -2650,8 +2650,7 @@ static rt_err_t _rt_mb_send_wait(rt_mailbox_t mb,
/* if it's not waiting forever and then re-calculate timeout tick */
if (timeout > 0)
{
tick_delta = rt_tick_get() - tick_delta;
timeout -= tick_delta;
timeout -= rt_tick_get_delta(tick_stamp);
if (timeout < 0)
timeout = 0;
}
Expand Down Expand Up @@ -2846,7 +2845,7 @@ static rt_err_t _rt_mb_recv(rt_mailbox_t mb, rt_ubase_t *value, rt_int32_t timeo
{
struct rt_thread *thread;
rt_base_t level;
rt_uint32_t tick_delta;
rt_uint32_t tick_stamp;
rt_err_t ret;

/* parameter check */
Expand All @@ -2856,8 +2855,8 @@ static rt_err_t _rt_mb_recv(rt_mailbox_t mb, rt_ubase_t *value, rt_int32_t timeo
/* current context checking */
RT_DEBUG_SCHEDULER_AVAILABLE(timeout != 0);

/* initialize delta tick */
tick_delta = 0;
/* initialize tick_stamp tick */
tick_stamp = 0;
/* get current thread */
thread = rt_thread_self();

Expand Down Expand Up @@ -2902,7 +2901,7 @@ static rt_err_t _rt_mb_recv(rt_mailbox_t mb, rt_ubase_t *value, rt_int32_t timeo
if (timeout > 0)
{
/* get the start tick of timer */
tick_delta = rt_tick_get();
tick_stamp = rt_tick_get();

LOG_D("mb_recv: start timer of thread:%s",
thread->parent.name);
Expand Down Expand Up @@ -2930,8 +2929,7 @@ static rt_err_t _rt_mb_recv(rt_mailbox_t mb, rt_ubase_t *value, rt_int32_t timeo
/* if it's not waiting forever and then re-calculate timeout tick */
if (timeout > 0)
{
tick_delta = rt_tick_get() - tick_delta;
timeout -= tick_delta;
timeout -= rt_tick_get_delta(tick_stamp);
if (timeout < 0)
timeout = 0;
}
Expand Down Expand Up @@ -3382,7 +3380,7 @@ static rt_err_t _rt_mq_send_wait(rt_mq_t mq,
{
rt_base_t level;
struct rt_mq_message *msg;
rt_uint32_t tick_delta;
rt_uint32_t tick_stamp;
struct rt_thread *thread;
rt_err_t ret;

Expand All @@ -3401,8 +3399,8 @@ static rt_err_t _rt_mq_send_wait(rt_mq_t mq,
if (size > mq->msg_size)
return -RT_ERROR;

/* initialize delta tick */
tick_delta = 0;
/* initialize tick_stamp tick */
tick_stamp = 0;
/* get current thread */
thread = rt_thread_self();

Expand Down Expand Up @@ -3447,7 +3445,7 @@ static rt_err_t _rt_mq_send_wait(rt_mq_t mq,
if (timeout > 0)
{
/* get the start tick of timer */
tick_delta = rt_tick_get();
tick_stamp = rt_tick_get();

LOG_D("mq_send_wait: start timer of thread:%s",
thread->parent.name);
Expand Down Expand Up @@ -3475,8 +3473,7 @@ static rt_err_t _rt_mq_send_wait(rt_mq_t mq,
/* if it's not waiting forever and then re-calculate timeout tick */
if (timeout > 0)
{
tick_delta = rt_tick_get() - tick_delta;
timeout -= tick_delta;
timeout -= rt_tick_get_delta(tick_stamp);
if (timeout < 0)
timeout = 0;
}
Expand Down Expand Up @@ -3765,7 +3762,7 @@ static rt_ssize_t _rt_mq_recv(rt_mq_t mq,
struct rt_thread *thread;
rt_base_t level;
struct rt_mq_message *msg;
rt_uint32_t tick_delta;
rt_uint32_t tick_stamp;
rt_err_t ret;
rt_size_t len;

Expand All @@ -3780,8 +3777,8 @@ static rt_ssize_t _rt_mq_recv(rt_mq_t mq,
/* current context checking */
RT_DEBUG_SCHEDULER_AVAILABLE(timeout != 0);

/* initialize delta tick */
tick_delta = 0;
/* initialize tick_stamp tick */
tick_stamp = 0;
/* get current thread */
thread = rt_thread_self();
RT_OBJECT_HOOK_CALL(rt_object_trytake_hook, (&(mq->parent.parent)));
Expand Down Expand Up @@ -3826,7 +3823,7 @@ static rt_ssize_t _rt_mq_recv(rt_mq_t mq,
if (timeout > 0)
{
/* get the start tick of timer */
tick_delta = rt_tick_get();
tick_stamp = rt_tick_get();

LOG_D("set thread:%s to timer list",
thread->parent.name);
Expand Down Expand Up @@ -3855,8 +3852,7 @@ static rt_ssize_t _rt_mq_recv(rt_mq_t mq,
/* if it's not waiting forever and then re-calculate timeout tick */
if (timeout > 0)
{
tick_delta = rt_tick_get() - tick_delta;
timeout -= tick_delta;
timeout -= rt_tick_get_delta(tick_stamp);
if (timeout < 0)
timeout = 0;
}
Expand Down
2 changes: 1 addition & 1 deletion src/mempool.c
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Original file line number Diff line number Diff line change
Expand Up @@ -335,7 +335,7 @@ void *rt_mp_alloc(rt_mp_t mp, rt_int32_t time)

if (time > 0)
{
time -= rt_tick_get() - before_sleep;
time -= rt_tick_get_delta(before_sleep);
if (time < 0)
time = 0;
}
Expand Down
5 changes: 2 additions & 3 deletions src/timer.c
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Original file line number Diff line number Diff line change
Expand Up @@ -22,6 +22,7 @@
* 2023-09-15 xqyjlj perf rt_hw_interrupt_disable/enable
* 2024-01-25 Shell add RT_TIMER_FLAG_THREAD_TIMER for timer to sync with sched
* 2024-05-01 wdfk-prog The rt_timer_check and _soft_timer_check functions are merged
* 2025-06-01 htl5241 remove redundancy and fix timer overflow
*/

#include <rtthread.h>
Expand Down Expand Up @@ -494,8 +495,6 @@ static void _timer_check(rt_list_t *timer_list, struct rt_spinlock *lock)

level = rt_spin_lock_irqsave(lock);

current_tick = rt_tick_get();

rt_list_init(&list);

while (!rt_list_isempty(&timer_list[RT_TIMER_SKIP_LIST_LEVEL - 1]))
Expand Down Expand Up @@ -762,7 +761,7 @@ void rt_timer_check(void)
rt_tick_t next_timeout;

ret = _timer_list_next_timeout(_soft_timer_list, &next_timeout);
if ((ret == RT_EOK) && (next_timeout <= rt_tick_get()))
if ((ret == RT_EOK) && ((rt_tick_get() - next_timeout) < RT_TICK_MAX / 2))
{
rt_sem_release(&_soft_timer_sem);
}
Expand Down