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clock: generic optimization for constant divisor on 32-bit machines

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Signed-off-by: ligd <liguiding1@xiaomi.com>
This commit is contained in:
ligd 2024-05-23 21:32:32 +08:00 committed by Xiang Xiao
parent fae6a00e02
commit 48f2a07ce7
1 changed files with 12 additions and 7 deletions
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19
include/nuttx/clock.h
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@ -33,6 +33,7 @@
#include <time.h>
#include <nuttx/compiler.h>
#include <nuttx/lib/math32.h>
/****************************************************************************
* Pre-processor Definitions
@ -177,11 +178,11 @@
/* ?SEC2TIC rounds up */
#define NSEC2TICK(nsec) (((nsec) + (NSEC_PER_TICK - 1)) / NSEC_PER_TICK)
#define USEC2TICK(usec) (((usec) + (USEC_PER_TICK - 1)) / USEC_PER_TICK)
#define NSEC2TICK(nsec) div_const_roundup(nsec, NSEC_PER_TICK)
#define USEC2TICK(usec) div_const_roundup(usec, USEC_PER_TICK)
#if (MSEC_PER_TICK * USEC_PER_MSEC) == USEC_PER_TICK
# define MSEC2TICK(msec) (((msec) + (MSEC_PER_TICK - 1)) / MSEC_PER_TICK)
# define MSEC2TICK(msec) div_const_roundup(msec, MSEC_PER_TICK)
#else
# define MSEC2TICK(msec) USEC2TICK((msec) * USEC_PER_MSEC)
#endif
@ -196,14 +197,18 @@
#if (MSEC_PER_TICK * USEC_PER_MSEC) == USEC_PER_TICK
# define TICK2MSEC(tick) ((tick) * MSEC_PER_TICK)
#else
# define TICK2MSEC(tick) (((tick) * USEC_PER_TICK) / USEC_PER_MSEC)
# define TICK2MSEC(tick) div_const(((tick) * USEC_PER_TICK), USEC_PER_MSEC)
#endif
/* TIC2?SEC rounds to nearest */
#define TICK2DSEC(tick) (((tick) + (TICK_PER_DSEC / 2)) / TICK_PER_DSEC)
#define TICK2HSEC(tick) (((tick) + (TICK_PER_HSEC / 2)) / TICK_PER_HSEC)
#define TICK2SEC(tick) (((tick) + (TICK_PER_SEC / 2)) / TICK_PER_SEC)
#define TICK2DSEC(tick) div_const_roundnearest(tick, TICK_PER_DSEC)
#define TICK2HSEC(tick) div_const_roundnearest(tick, TICK_PER_HSEC)
#define TICK2SEC(tick) div_const_roundnearest(tick, TICK_PER_SEC)
/* USEC2SEC */
#define USEC2SEC(usec) div_const(usec, USEC_PER_SEC)
#if defined(CONFIG_DEBUG_SCHED) && defined(CONFIG_SYSTEM_TIME64) && \
!defined(CONFIG_SCHED_TICKLESS)