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-rw-r--r--nuttx/sched/timer_gettime.c123
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diff --git a/nuttx/sched/timer_gettime.c b/nuttx/sched/timer_gettime.c
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-/********************************************************************************
- * timer_gettime.c
- *
- * Copyright (C) 2007 Gregory Nutt. All rights reserved.
- * Author: Gregory Nutt <gnutt@nuttx.org>
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- * 3. Neither the name NuttX nor the names of its contributors may be
- * used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
- * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- *
- ********************************************************************************/
-
-/********************************************************************************
- * Included Files
- ********************************************************************************/
-
-#include <nuttx/config.h>
-
-#include <time.h>
-#include <errno.h>
-
-#include "clock_internal.h"
-#include "timer_internal.h"
-
-#ifndef CONFIG_DISABLE_POSIX_TIMERS
-
-/********************************************************************************
- * Definitions
- ********************************************************************************/
-
-/********************************************************************************
- * Private Data
- ********************************************************************************/
-
-/********************************************************************************
- * Public Data
- ********************************************************************************/
-
-/********************************************************************************
- * Private Functions
- ********************************************************************************/
-
-/********************************************************************************
- * Public Functions
- ********************************************************************************/
-
-/********************************************************************************
- * Name: timer_gettime
- *
- * Description:
- * The timer_gettime() function will store the amount of time until the
- * specified timer, timerid, expires and the reload value of the timer into the
- * space pointed to by the value argument. The it_value member of this structure
- * will contain the amount of time before the timer expires, or zero if the timer
- * is disarmed. This value is returned as the interval until timer expiration,
- * even if the timer was armed with absolute time. The it_interval member of
- * value will contain the reload value last set by timer_settime().
- *
- * Parameters:
- * timerid - The pre-thread timer, previously created by the call to
- * timer_create(), whose remaining time count will be returned..
- *
- * Return Value:
- * If the timer_gettime() succeeds, a value of 0 (OK) will be returned.
- * If an error occurs, the value -1 (ERROR) will be returned, and errno set to
- * indicate the error.
- *
- * EINVAL - The timerid argument does not correspond to an ID returned by
- * timer_create() but not yet deleted by timer_delete().
- *
- * Assumptions/Limitations:
- * Due to the asynchronous operation of this function, the time reported
- * by this function could be significantly more than that actual time
- * remaining on the timer at any time.
- *
- ********************************************************************************/
-
-int timer_gettime(timer_t timerid, FAR struct itimerspec *value)
-{
- FAR struct posix_timer_s *timer = (FAR struct posix_timer_s *)timerid;
- int ticks;
-
- if (!timer || !value)
- {
- set_errno(EINVAL);
- return ERROR;
- }
-
- /* Get the number of ticks before the underlying watchdog expires */
-
- ticks = wd_gettime(timer->pt_wdog);
-
- /* Convert that to a struct timespec and return it */
-
- (void)clock_ticks2time(ticks, &value->it_value);
- (void)clock_ticks2time(timer->pt_last, &value->it_interval);
- return OK;
-}
-
-#endif /* CONFIG_DISABLE_POSIX_TIMERS */