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sleep: optimize sleep logic, to reduce the disable IRQ time

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Signed-off-by: ligd <liguiding1@xiaomi.com>
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ligd 2024-06-11 22:05:35 +08:00 • committed by Xiang Xiao
parent 42041a428c
commit fc73dfd368
3 changed files with 206 additions and 257 deletions
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49
include/nuttx/signal.h
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@ -439,6 +439,55 @@ int nxsig_kill(pid_t pid, int signo);
#define nxsig_waitinfo(s,i) nxsig_timedwait(s,i,NULL)
/****************************************************************************
* Name: nxsig_clockwait
*
* Description:
* This function selects the pending signal set specified by the argument
* set. If multiple signals are pending in set, it will remove and return
* the lowest numbered one. If no signals in set are pending at the time
* of the call, the calling process will be suspended until one of the
* signals in set becomes pending, OR until the process is interrupted by
* an unblocked signal, OR until the time interval specified by timeout
* (if any), has expired. If timeout is NULL, then the timeout interval
* is forever.
*
* If the info argument is non-NULL, the selected signal number is stored
* in the si_signo member and the cause of the signal is stored in the
* si_code member. The content of si_value is only meaningful if the
* signal was generated by sigqueue() (or nxsig_queue).
*
* This is an internal OS interface. It is functionally equivalent to
* sigtimedwait() except that:
*
* - It is not a cancellation point, and
* - It does not modify the errno value.
*
* Input Parameters:
* clockid - The ID of the clock to be used to measure the timeout.
* flags - Open flags. TIMER_ABSTIME is the only supported flag.
* rqtp - The amount of time to be suspended from execution.
* rmtp - If the rmtp argument is non-NULL, the timespec structure
* referenced by it is updated to contain the amount of time
* remaining in the interval (the requested time minus the time
* actually slept)
*
* Returned Value:
* This is an internal OS interface and should not be used by applications.
* A negated errno value is returned on failure.
*
* EAGAIN - wait time is zero.
* EINTR - The wait was interrupted by an unblocked, caught signal.
*
* Notes:
* This function should be called with critical section set.
*
****************************************************************************/
int nxsig_clockwait(int clockid, int flags,
FAR const struct timespec *rqtp,
FAR struct timespec *rmtp);
/****************************************************************************
* Name: nxsig_timedwait
*