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Uses interval timer interfaces to get the time if CONFIG_SCHED_TICKLESS is selected.

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This commit is contained in:
Gregory Nutt 2014-08-06 18:28:08 -06:00
parent a93fdc165d
commit b0324c00ee
1 changed files with 40 additions and 1 deletions
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41
sched/clock_systimer.c
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@ -1,7 +1,7 @@
/****************************************************************************
* sched/clock_systimer.c
*
* Copyright (C) 2011 Gregory Nutt. All rights reserved.
* Copyright (C) 2011, 2014 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
@ -41,6 +41,7 @@
#include <stdint.h>
#include <nuttx/arch.h>
#include <nuttx/clock.h>
#include "clock_internal.h"
@ -76,11 +77,33 @@
#if !defined(clock_systimer) /* See nuttx/clock.h */
uint32_t clock_systimer(void)
{
#ifdef CONFIG_SCHED_TICKLESS
struct timespec ts;
uint64_t tmp;
/* Get the time from the platform specific hardware */
(void)up_timer_gettime(&ts);
/* Convert to a 64- then 32-bit value */
tmp = (1000 * (uint64_t)ts.tv_sec + (uint64_t)ts.tv_nsec / 1000000) /
MSEC_PER_TICK;
return (uint32_t)(tmp & 0x00000000ffffffff);
#else
#ifdef CONFIG_SYSTEM_TIME64
/* Return the current system time truncated to 32-bits */
return (uint32_t)(g_system_timer & 0x00000000ffffffff);
#else
/* Return the current system time */
return g_system_timer;
#endif
#endif
}
#endif
@ -104,7 +127,23 @@ uint32_t clock_systimer(void)
#ifdef CONFIG_SYSTEM_TIME64
uint64_t clock_systimer64(void)
{
#ifdef CONFIG_SCHED_TICKLESS
struct timespec ts;
/* Get the time from the platform specific hardware */
(void)up_timer_gettime(&ts);
/* Convert to a 64- then 32-bit value */
return (1000 * (uint64_t)ts.tv_sec + (uint64_t)ts.tv_nsec / 1000000) /
MSEC_PER_TICK;
#else
/* Return the current system time */
return g_system_timer;
#endif
}
#endif
#endif