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Update some comments.

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This commit is contained in:
Gregory Nutt 2018-03-14 08:17:50 -06:00
parent 5f0af167df
commit 06e7533bb0
2 changed files with 19 additions and 7 deletions
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11
include/nuttx/clock.h
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@ -336,25 +336,28 @@ void clock_resynchronize(FAR struct timespec *rtc_diff);
#endif
/****************************************************************************
* Name: clock_systimer
* Name: clock_systimer
*
* Description:
* Return the current value of the 32/64-bit system timer counter.
*
* Indirect access to the system timer counter is required through this
* function if the execution environment does not have direct access to
* kernel global data.
*
* Use of this function is also required to assue atomic access to the
* Use of this function is also required to assure atomic access to the
* 64-bit system timer.
*
* NOTE: This is an internal OS interface and should not be called from
* application code. Rather, the functionally equivalent, standard
* interface clock() should be used.
*
* Input Parameters:
* None
*
* Returned Value:
* The current value of the system timer counter
*
* Assumptions:
*
****************************************************************************/
#if !defined(__HAVE_KERNEL_GLOBALS) || defined(CONFIG_SYSTEM_TIME64)

15
sched/clock/clock_systimer.c
View File

@ -67,7 +67,18 @@
* Name: clock_systimer
*
* Description:
* Return the current value of the 32/64-bit system timer counter
* Return the current value of the 32/64-bit system timer counter.
*
* Indirect access to the system timer counter is required through this
* function if the execution environment does not have direct access to
* kernel global data.
*
* Use of this function is also required to assure atomic access to the
* 64-bit system timer.
*
* NOTE: This is an internal OS interface and should not be called from
* application code. Rather, the functionally equivalent, standard
* interface clock() should be used.
*
* Input Parameters:
* None
@ -75,8 +86,6 @@
* Returned Value:
* The current value of the system timer counter
*
* Assumptions:
*
****************************************************************************/
systime_t clock_systimer(void)