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🐞 fix(components/drivers): fix cpu timer in multithreading (#7222) 

* 🐞 fix(components/drivers): fix cpu timer in multithreading

* 🎈 perf(components): change double to uint64_t

* 🎈 perf(components): add UL suffix
This commit is contained in:
xqyjlj 2023-04-13 16:00:19 +08:00 committed by GitHub
parent 590e603997
commit 970c7c6f7a
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GPG Key ID: 4AEE18F83AFDEB23
7 changed files with 90 additions and 152 deletions
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12
components/drivers/cputime/cputime.c
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@ -18,9 +18,9 @@ static const struct rt_clock_cputime_ops *_cputime_ops = RT_NULL;
* The clock_cpu_getres() function shall return the resolution of CPU time, the * The clock_cpu_getres() function shall return the resolution of CPU time, the
* number of nanosecond per tick. * number of nanosecond per tick.
* *
* @return the number of nanosecond per tick * @return the number of nanosecond per tick(x (1000UL * 1000))
*/ */
double clock_cpu_getres(void) uint64_t clock_cpu_getres(void)
{ {
if (_cputime_ops) if (_cputime_ops)
return _cputime_ops->cputime_getres(); return _cputime_ops->cputime_getres();
@ -78,9 +78,9 @@ int clock_cpu_issettimeout(void)
*/ */
uint64_t clock_cpu_microsecond(uint64_t cpu_tick) uint64_t clock_cpu_microsecond(uint64_t cpu_tick)
{ {
double unit = clock_cpu_getres(); uint64_t unit = clock_cpu_getres();
return (uint64_t)((cpu_tick * unit) / 1000); return (uint64_t)(((cpu_tick * unit) / (1000UL * 1000)) / 1000);
} }
/** /**
@ -93,9 +93,9 @@ uint64_t clock_cpu_microsecond(uint64_t cpu_tick)
*/ */
uint64_t clock_cpu_millisecond(uint64_t cpu_tick) uint64_t clock_cpu_millisecond(uint64_t cpu_tick)
{ {
double unit = clock_cpu_getres(); uint64_t unit = clock_cpu_getres();
return (uint64_t)((cpu_tick * unit) / (1000 * 1000)); return (uint64_t)(((cpu_tick * unit) / (1000UL * 1000)) / (1000UL * 1000));
} }
/** /**

6
components/drivers/cputime/cputime_cortexm.c
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@ -19,11 +19,11 @@
#endif #endif
/* Use Cycle counter of Data Watchpoint and Trace Register for CPU time */ /* Use Cycle counter of Data Watchpoint and Trace Register for CPU time */
static double cortexm_cputime_getres(void) static uint64_t cortexm_cputime_getres(void)
{ {
double ret = 1000UL * 1000 * 1000; uint64_t ret = 1000UL * 1000 * 1000;
ret = ret / SystemCoreClock; ret = (ret * (1000UL * 1000)) / SystemCoreClock;
return ret; return ret;
} }

6
components/drivers/cputime/cputime_riscv.c
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@ -6,11 +6,11 @@
/* Use Cycle counter of Data Watchpoint and Trace Register for CPU time */ /* Use Cycle counter of Data Watchpoint and Trace Register for CPU time */
static double riscv_cputime_getres(void) static uint64_t riscv_cputime_getres(void)
{ {
double ret = 1000UL * 1000 * 1000; uint64_t ret = 1000UL * 1000 * 1000;
ret = ret / CPUTIME_TIMER_FREQ; ret = (ret * (1000UL * 1000)) / CPUTIME_TIMER_FREQ;
return ret; return ret;
} }

163
components/drivers/cputime/cputimer.c
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@ -6,35 +6,59 @@
* Change Logs: * Change Logs:
* Date Author Notes * Date Author Notes
* 2023-02-13 zhkag first version * 2023-02-13 zhkag first version
* 2023-04-03 xqyjlj fix cputimer in multithreading
*/ */
#include <rtthread.h>
#include <rthw.h>
#include <rtdevice.h> #include <rtdevice.h>
#include <rthw.h>
#include <rtthread.h>
static rt_list_t _cputimer_list = RT_LIST_OBJECT_INIT(_cputimer_list); static rt_list_t _cputimer_list = RT_LIST_OBJECT_INIT(_cputimer_list);
static struct rt_cputimer *_cputimer_nowtimer = RT_NULL;
static void _cputime_timeout(void *parameter) static void _cputime_sleep_timeout(void *parameter)
{
struct rt_semaphore *sem;
sem = (struct rt_semaphore *)parameter;
rt_sem_release(sem);
}
static void _cputime_timeout_callback(void *parameter)
{ {
struct rt_cputimer *timer; struct rt_cputimer *timer;
timer = (struct rt_cputimer *)parameter; timer = (struct rt_cputimer *)parameter;
timer->timeout_func(timer->parameter); rt_base_t level;
rt_list_remove(&timer->row); level = rt_hw_interrupt_disable();
_cputimer_nowtimer = RT_NULL;
rt_list_remove(&(timer->row));
rt_hw_interrupt_enable(level);
timer->timeout_func(&(timer->sem));
}
static void _set_next_timeout()
{
struct rt_cputimer *t;
if (&_cputimer_list != _cputimer_list.prev) if (&_cputimer_list != _cputimer_list.prev)
{ {
struct rt_cputimer *t; t = rt_list_entry((&_cputimer_list)->next, struct rt_cputimer, row);
t = rt_list_entry(_cputimer_list.next, struct rt_cputimer, row); if (_cputimer_nowtimer != RT_NULL)
clock_cpu_settimeout(t->timeout_tick, _cputime_timeout, t); {
if (t != _cputimer_nowtimer && t->timeout_tick < _cputimer_nowtimer->timeout_tick)
{
_cputimer_nowtimer = t;
clock_cpu_settimeout(t->timeout_tick, _cputime_timeout_callback, t);
}
} }
else else
clock_cpu_settimeout(RT_NULL, RT_NULL, RT_NULL);
if ((timer->parent.flag & RT_TIMER_FLAG_PERIODIC) &&
(timer->parent.flag & RT_TIMER_FLAG_ACTIVATED))
{ {
/* start it */ _cputimer_nowtimer = t;
timer->parent.flag &= ~RT_TIMER_FLAG_ACTIVATED; clock_cpu_settimeout(t->timeout_tick, _cputime_timeout_callback, t);
rt_cputimer_start(timer); }
}
else
{
_cputimer_nowtimer = NULL;
} }
} }
@ -50,33 +74,18 @@ void rt_cputimer_init(rt_cputimer_t timer,
RT_ASSERT(timeout != RT_NULL); RT_ASSERT(timeout != RT_NULL);
RT_ASSERT(clock_cpu_issettimeout() != RT_FALSE); RT_ASSERT(clock_cpu_issettimeout() != RT_FALSE);
/* timer object initialization */
rt_object_init(&(timer->parent), RT_Object_Class_Timer, name);
/* set flag */ /* set flag */
timer->parent.flag = flag; timer->parent.flag = flag;
/* set deactivated */ /* set deactivated */
timer->parent.flag &= ~RT_TIMER_FLAG_ACTIVATED; timer->parent.flag &= ~RT_TIMER_FLAG_ACTIVATED;
timer->timeout_func = timeout; timer->timeout_func = timeout;
timer->parameter = parameter; timer->parameter = parameter;
timer->timeout_tick = tick + clock_cpu_gettime();
timer->timeout_tick = 0;
timer->init_tick = tick; timer->init_tick = tick;
rt_list_init(&(timer->row));
}
static void _set_next_timeout() rt_list_init(&(timer->row));
{ rt_sem_init(&(timer->sem), "cputime", 0, RT_IPC_FLAG_PRIO);
struct rt_cputimer *t;
if (&_cputimer_list != _cputimer_list.prev)
{
t = rt_list_entry((&_cputimer_list)->next, struct rt_cputimer, row);
clock_cpu_settimeout(t->timeout_tick, _cputime_timeout, t);
}
else
clock_cpu_settimeout(RT_NULL, RT_NULL, RT_NULL);
} }
rt_err_t rt_cputimer_delete(rt_cputimer_t timer) rt_err_t rt_cputimer_delete(rt_cputimer_t timer)
@ -85,8 +94,6 @@ rt_err_t rt_cputimer_delete(rt_cputimer_t timer)
/* parameter check */ /* parameter check */
RT_ASSERT(timer != RT_NULL); RT_ASSERT(timer != RT_NULL);
RT_ASSERT(rt_object_get_type(&timer->parent) == RT_Object_Class_Timer);
RT_ASSERT(rt_object_is_systemobject(&timer->parent) == RT_FALSE);
RT_ASSERT(clock_cpu_issettimeout() != RT_FALSE); RT_ASSERT(clock_cpu_issettimeout() != RT_FALSE);
/* disable interrupt */ /* disable interrupt */
@ -99,7 +106,6 @@ rt_err_t rt_cputimer_delete(rt_cputimer_t timer)
/* enable interrupt */ /* enable interrupt */
rt_hw_interrupt_enable(level); rt_hw_interrupt_enable(level);
rt_object_delete(&(timer->parent));
_set_next_timeout(); _set_next_timeout();
return RT_EOK; return RT_EOK;
@ -112,7 +118,6 @@ rt_err_t rt_cputimer_start(rt_cputimer_t timer)
/* parameter check */ /* parameter check */
RT_ASSERT(timer != RT_NULL); RT_ASSERT(timer != RT_NULL);
RT_ASSERT(rt_object_get_type(&timer->parent) == RT_Object_Class_Timer);
RT_ASSERT(clock_cpu_issettimeout() != RT_FALSE); RT_ASSERT(clock_cpu_issettimeout() != RT_FALSE);
/* stop timer firstly */ /* stop timer firstly */
@ -123,8 +128,6 @@ rt_err_t rt_cputimer_start(rt_cputimer_t timer)
/* change status of timer */ /* change status of timer */
timer->parent.flag &= ~RT_TIMER_FLAG_ACTIVATED; timer->parent.flag &= ~RT_TIMER_FLAG_ACTIVATED;
timer->timeout_tick = clock_cpu_gettime() + timer->init_tick;
timer_list = &_cputimer_list; timer_list = &_cputimer_list;
for (; timer_list != _cputimer_list.prev; for (; timer_list != _cputimer_list.prev;
@ -165,7 +168,6 @@ rt_err_t rt_cputimer_stop(rt_cputimer_t timer)
/* timer check */ /* timer check */
RT_ASSERT(timer != RT_NULL); RT_ASSERT(timer != RT_NULL);
RT_ASSERT(rt_object_get_type(&timer->parent) == RT_Object_Class_Timer);
RT_ASSERT(clock_cpu_issettimeout() != RT_FALSE); RT_ASSERT(clock_cpu_issettimeout() != RT_FALSE);
if (!(timer->parent.flag & RT_TIMER_FLAG_ACTIVATED)) if (!(timer->parent.flag & RT_TIMER_FLAG_ACTIVATED))
@ -191,7 +193,6 @@ rt_err_t rt_cputimer_control(rt_cputimer_t timer, int cmd, void *arg)
/* parameter check */ /* parameter check */
RT_ASSERT(timer != RT_NULL); RT_ASSERT(timer != RT_NULL);
RT_ASSERT(rt_object_get_type(&timer->parent) == RT_Object_Class_Timer);
RT_ASSERT(clock_cpu_issettimeout() != RT_FALSE); RT_ASSERT(clock_cpu_issettimeout() != RT_FALSE);
level = rt_hw_interrupt_disable(); level = rt_hw_interrupt_disable();
@ -260,8 +261,6 @@ rt_err_t rt_cputimer_detach(rt_cputimer_t timer)
/* parameter check */ /* parameter check */
RT_ASSERT(timer != RT_NULL); RT_ASSERT(timer != RT_NULL);
RT_ASSERT(rt_object_get_type(&timer->parent) == RT_Object_Class_Timer);
RT_ASSERT(rt_object_is_systemobject(&timer->parent));
RT_ASSERT(clock_cpu_issettimeout() != RT_FALSE); RT_ASSERT(clock_cpu_issettimeout() != RT_FALSE);
/* disable interrupt */ /* disable interrupt */
@ -275,52 +274,19 @@ rt_err_t rt_cputimer_detach(rt_cputimer_t timer)
/* enable interrupt */ /* enable interrupt */
rt_hw_interrupt_enable(level); rt_hw_interrupt_enable(level);
rt_object_detach(&(timer->parent)); rt_sem_detach(&(timer->sem));
return RT_EOK; return RT_EOK;
} }
static void _cputime_sleep_timeout(void *parameter)
{
struct rt_thread *thread;
rt_base_t level;
thread = (struct rt_thread *)parameter;
/* parameter check */
RT_ASSERT(thread != RT_NULL);
RT_ASSERT((thread->stat & RT_THREAD_SUSPEND_MASK) == RT_THREAD_SUSPEND_MASK);
RT_ASSERT(rt_object_get_type((rt_object_t)thread) == RT_Object_Class_Thread);
/* disable interrupt */
level = rt_hw_interrupt_disable();
/* set error number */
thread->error = -RT_ETIMEOUT;
/* remove from suspend list */
rt_list_remove(&(thread->tlist));
/* insert to schedule ready list */
rt_schedule_insert_thread(thread);
/* enable interrupt */
rt_hw_interrupt_enable(level);
/* do schedule */
rt_schedule();
}
rt_err_t rt_cputime_sleep(rt_uint64_t tick) rt_err_t rt_cputime_sleep(rt_uint64_t tick)
{ {
rt_base_t level; rt_base_t level;
struct rt_thread *thread;
struct rt_cputimer cputimer; struct rt_cputimer cputimer;
int err;
if (!clock_cpu_issettimeout()) if (!clock_cpu_issettimeout())
{ {
rt_int32_t ms = tick * clock_cpu_getres() / 1000000; rt_int32_t ms = clock_cpu_millisecond(tick);
return rt_thread_delay(rt_tick_from_millisecond(ms)); return rt_thread_delay(rt_tick_from_millisecond(ms));
} }
@ -329,53 +295,24 @@ rt_err_t rt_cputime_sleep(rt_uint64_t tick)
return -RT_EINVAL; return -RT_EINVAL;
} }
/* set to current thread */ rt_cputimer_init(&cputimer, "cputime_sleep", _cputime_sleep_timeout, &(cputimer.sem), tick,
thread = rt_thread_self(); RT_TIMER_FLAG_ONE_SHOT | RT_TIMER_FLAG_SOFT_TIMER);
RT_ASSERT(thread != RT_NULL);
RT_ASSERT(rt_object_get_type((rt_object_t)thread) == RT_Object_Class_Thread);
/* current context checking */
RT_DEBUG_SCHEDULER_AVAILABLE(RT_TRUE);
rt_cputimer_init(&cputimer, "cputime_sleep", _cputime_sleep_timeout, thread, 0, RT_TIMER_FLAG_ONE_SHOT | RT_TIMER_FLAG_SOFT_TIMER);
/* disable interrupt */ /* disable interrupt */
level = rt_hw_interrupt_disable(); level = rt_hw_interrupt_disable();
/* reset thread error */ rt_cputimer_start(&cputimer); /* reset the timeout of thread timer and start it */
thread->error = RT_EOK;
/* suspend thread */
err = rt_thread_suspend_with_flag(thread, RT_INTERRUPTIBLE);
/* reset the timeout of thread timer and start it */
if (err == RT_EOK)
{
rt_cputimer_control(&cputimer, RT_TIMER_CTRL_SET_TIME, &tick);
rt_cputimer_start(&cputimer);
/* enable interrupt */
rt_hw_interrupt_enable(level); rt_hw_interrupt_enable(level);
rt_sem_take_interruptible(&(cputimer.sem), RT_WAITING_FOREVER);
thread->error = -RT_EINTR;
rt_schedule();
if (thread->error == -RT_ETIMEOUT)
thread->error = RT_EOK;
}
else
{
rt_hw_interrupt_enable(level);
}
rt_cputimer_detach(&cputimer); rt_cputimer_detach(&cputimer);
return err; return RT_EOK;
} }
rt_err_t rt_cputime_ndelay(rt_uint64_t ns) rt_err_t rt_cputime_ndelay(rt_uint64_t ns)
{ {
double unit = clock_cpu_getres(); uint64_t unit = clock_cpu_getres();
return rt_cputime_sleep(ns / unit); return rt_cputime_sleep(ns * (1000UL * 1000) / unit);
} }
rt_err_t rt_cputime_udelay(rt_uint64_t us) rt_err_t rt_cputime_udelay(rt_uint64_t us)

4
components/drivers/include/drivers/cputime.h
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@ -16,12 +16,12 @@
struct rt_clock_cputime_ops struct rt_clock_cputime_ops
{ {
double (*cputime_getres)(void); uint64_t (*cputime_getres)(void);
uint64_t (*cputime_gettime)(void); uint64_t (*cputime_gettime)(void);
int (*cputime_settimeout)(uint64_t tick, void (*timeout)(void *param), void *param); int (*cputime_settimeout)(uint64_t tick, void (*timeout)(void *param), void *param);
}; };
double clock_cpu_getres(void); uint64_t clock_cpu_getres(void);
uint64_t clock_cpu_gettime(void); uint64_t clock_cpu_gettime(void);
int clock_cpu_settimeout(uint64_t tick, void (*timeout)(void *param), void *param); int clock_cpu_settimeout(uint64_t tick, void (*timeout)(void *param), void *param);
int clock_cpu_issettimeout(void); int clock_cpu_issettimeout(void);

1
components/drivers/include/drivers/cputimer.h
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@ -21,6 +21,7 @@ struct rt_cputimer
void *parameter; void *parameter;
rt_uint64_t init_tick; rt_uint64_t init_tick;
rt_uint64_t timeout_tick; rt_uint64_t timeout_tick;
struct rt_semaphore sem;
}; };
typedef struct rt_cputimer *rt_cputimer_t; typedef struct rt_cputimer *rt_cputimer_t;

32
components/libc/compilers/common/ctime.c
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@ -536,9 +536,9 @@ int nanosleep(const struct timespec *rqtp, struct timespec *rmtp)
return -1; return -1;
} }
#ifdef RT_USING_CPUTIME #ifdef RT_USING_CPUTIME
double unit = clock_cpu_getres(); rt_uint64_t unit = clock_cpu_getres();
rt_uint64_t ns = rqtp->tv_sec * NANOSECOND_PER_SECOND + rqtp->tv_nsec; rt_uint64_t ns = rqtp->tv_sec * NANOSECOND_PER_SECOND + rqtp->tv_nsec;
rt_uint64_t tick = ns / unit; rt_uint64_t tick = (ns * (1000UL * 1000)) / unit;
rt_cputime_sleep(tick); rt_cputime_sleep(tick);
if (rt_get_errno() == -RT_EINTR) if (rt_get_errno() == -RT_EINTR)
@ -546,8 +546,8 @@ int nanosleep(const struct timespec *rqtp, struct timespec *rmtp)
if (rmtp) if (rmtp)
{ {
uint64_t rmtp_cpu_tick = tick - clock_cpu_gettime(); uint64_t rmtp_cpu_tick = tick - clock_cpu_gettime();
rmtp->tv_sec = ((time_t)(rmtp_cpu_tick * unit)) / NANOSECOND_PER_SECOND; rmtp->tv_sec = ((time_t)((rmtp_cpu_tick * unit) / (1000UL * 1000))) / NANOSECOND_PER_SECOND;
rmtp->tv_nsec = ((long)(rmtp_cpu_tick * unit)) % NANOSECOND_PER_SECOND; rmtp->tv_nsec = ((long)((rmtp_cpu_tick * unit) / (1000UL * 1000))) % NANOSECOND_PER_SECOND;
} }
rt_set_errno(EINTR); rt_set_errno(EINTR);
return -1; return -1;
@ -634,7 +634,7 @@ int clock_getres(clockid_t clockid, struct timespec *res)
#ifdef RT_USING_CPUTIME #ifdef RT_USING_CPUTIME
case CLOCK_CPUTIME_ID: case CLOCK_CPUTIME_ID:
res->tv_sec = 0; res->tv_sec = 0;
res->tv_nsec = clock_cpu_getres(); res->tv_nsec = (clock_cpu_getres() / (1000UL * 1000));
break; break;
#endif #endif
@ -684,14 +684,14 @@ int clock_gettime(clockid_t clockid, struct timespec *tp)
case CLOCK_MONOTONIC: case CLOCK_MONOTONIC:
case CLOCK_CPUTIME_ID: case CLOCK_CPUTIME_ID:
{ {
double unit = 0; uint64_t unit = 0;
uint64_t cpu_tick; uint64_t cpu_tick;
unit = clock_cpu_getres(); unit = clock_cpu_getres();
cpu_tick = clock_cpu_gettime(); cpu_tick = clock_cpu_gettime();
tp->tv_sec = ((uint64_t)(cpu_tick * unit)) / NANOSECOND_PER_SECOND; tp->tv_sec = ((uint64_t)((cpu_tick * unit) / (1000UL * 1000))) / NANOSECOND_PER_SECOND;
tp->tv_nsec = ((uint64_t)(cpu_tick * unit)) % NANOSECOND_PER_SECOND; tp->tv_nsec = ((uint64_t)((cpu_tick * unit) / (1000UL * 1000))) % NANOSECOND_PER_SECOND;
} }
break; break;
#endif #endif
@ -757,9 +757,9 @@ int clock_nanosleep(clockid_t clockid, int flags, const struct timespec *rqtp, s
case CLOCK_CPUTIME_ID: case CLOCK_CPUTIME_ID:
{ {
rt_uint64_t cpu_tick_old = clock_cpu_gettime(); rt_uint64_t cpu_tick_old = clock_cpu_gettime();
double unit = clock_cpu_getres(); uint64_t unit = clock_cpu_getres();
rt_uint64_t ns = rqtp->tv_sec * NANOSECOND_PER_SECOND + rqtp->tv_nsec; rt_uint64_t ns = rqtp->tv_sec * NANOSECOND_PER_SECOND + rqtp->tv_nsec;
rt_uint64_t tick = ns / unit; rt_uint64_t tick = (ns * (1000UL * 1000)) / unit;
if ((flags & TIMER_ABSTIME) == TIMER_ABSTIME) if ((flags & TIMER_ABSTIME) == TIMER_ABSTIME)
tick -= cpu_tick_old; tick -= cpu_tick_old;
rt_cputime_sleep(tick); rt_cputime_sleep(tick);
@ -769,8 +769,8 @@ int clock_nanosleep(clockid_t clockid, int flags, const struct timespec *rqtp, s
if (rmtp) if (rmtp)
{ {
uint64_t rmtp_cpu_tick = tick - clock_cpu_gettime(); uint64_t rmtp_cpu_tick = tick - clock_cpu_gettime();
rmtp->tv_sec = ((time_t)(rmtp_cpu_tick * unit)) / NANOSECOND_PER_SECOND; rmtp->tv_sec = ((time_t)((rmtp_cpu_tick * unit) / (1000UL * 1000))) / NANOSECOND_PER_SECOND;
rmtp->tv_nsec = ((long)(rmtp_cpu_tick * unit)) % NANOSECOND_PER_SECOND; rmtp->tv_nsec = ((long)((rmtp_cpu_tick * unit) / (1000UL * 1000))) % NANOSECOND_PER_SECOND;
} }
rt_set_errno(EINTR); rt_set_errno(EINTR);
return -1; return -1;
@ -906,7 +906,7 @@ static void rtthread_timer_wrapper(void *timerobj)
#ifdef RT_USING_CPUTIME #ifdef RT_USING_CPUTIME
if (timer->clockid == CLOCK_CPUTIME_ID && clock_cpu_issettimeout()) if (timer->clockid == CLOCK_CPUTIME_ID && clock_cpu_issettimeout())
{ {
timer->reload = (timer->interval.tv_sec * NANOSECOND_PER_SECOND + timer->interval.tv_nsec) / clock_cpu_getres(); timer->reload = ((timer->interval.tv_sec * NANOSECOND_PER_SECOND + timer->interval.tv_nsec) * (1000UL * 1000)) / clock_cpu_getres();
if (timer->reload) if (timer->reload)
rt_cputimer_control(&timer->cputimer, RT_TIMER_CTRL_SET_TIME, &(timer->reload)); rt_cputimer_control(&timer->cputimer, RT_TIMER_CTRL_SET_TIME, &(timer->reload));
} }
@ -1174,7 +1174,7 @@ int timer_gettime(timer_t timerid, struct itimerspec *its)
rt_uint64_t remain_tick; rt_uint64_t remain_tick;
rt_uint64_t remaining; rt_uint64_t remaining;
rt_cputimer_control(&timer->cputimer, RT_TIMER_CTRL_GET_REMAIN_TIME, &remain_tick); rt_cputimer_control(&timer->cputimer, RT_TIMER_CTRL_GET_REMAIN_TIME, &remain_tick);
remaining = (remain_tick - clock_cpu_gettime()) / clock_cpu_getres(); remaining = ((remain_tick - clock_cpu_gettime()) * (1000UL * 1000)) / clock_cpu_getres();
seconds = remaining / NANOSECOND_PER_SECOND; seconds = remaining / NANOSECOND_PER_SECOND;
nanoseconds = remaining % NANOSECOND_PER_SECOND; nanoseconds = remaining % NANOSECOND_PER_SECOND;
} }
@ -1278,9 +1278,9 @@ int timer_settime(timer_t timerid, int flags, const struct itimerspec *value,
if (timer->clockid == CLOCK_CPUTIME_ID && clock_cpu_issettimeout()) if (timer->clockid == CLOCK_CPUTIME_ID && clock_cpu_issettimeout())
{ {
rt_uint64_t tick; rt_uint64_t tick;
double unit = clock_cpu_getres(); uint64_t unit = clock_cpu_getres();
tick = (value->it_value.tv_sec * NANOSECOND_PER_SECOND + value->it_value.tv_nsec) / unit; tick = ((value->it_value.tv_sec * NANOSECOND_PER_SECOND + value->it_value.tv_nsec) * (1000UL * 1000)) / unit;
if ((flags & TIMER_ABSTIME) == TIMER_ABSTIME) if ((flags & TIMER_ABSTIME) == TIMER_ABSTIME)
{ {
tick -= clock_cpu_gettime(); tick -= clock_cpu_gettime();