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-rw-r--r--nuttx/sched/wd_gettime.c118
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diff --git a/nuttx/sched/wd_gettime.c b/nuttx/sched/wd_gettime.c
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-/********************************************************************************
- * sched/wd_gettime.c
- *
- * Copyright (C) 2007, 2009 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 <wdog.h>
-
-#include "os_internal.h"
-#include "wd_internal.h"
-
-/********************************************************************************
- * Definitions
- ********************************************************************************/
-
-/********************************************************************************
- * Private Types
- ********************************************************************************/
-
-/********************************************************************************
- * Global Variables
- ********************************************************************************/
-
-/********************************************************************************
- * Private Variables
- ********************************************************************************/
-
-/********************************************************************************
- * Private Functions
- ********************************************************************************/
-
-/********************************************************************************
- * Public Functions
- ********************************************************************************/
-
-/********************************************************************************
- * Name: wd_gettime
- *
- * Description:
- * This function returns the time remaining before the specified watchdog
- * expires.
- *
- * Parameters:
- * wdog = watchdog ID
- *
- * Return Value:
- * The time in system ticks remaining until the watchdog time expires. Zero
- * means either that wdog is not valid or that the wdog has already expired.
- *
- * Assumptions:
- *
- ********************************************************************************/
-
-int wd_gettime(WDOG_ID wdog)
-{
- irqstate_t flags;
-
- /* Verify the wdog */
-
- flags = irqsave();
- if (wdog && wdog->active)
- {
- /* Traverse the watchdog list accumulating lag times until we find the wdog
- * that we are looking for
- */
-
- wdog_t *curr;
- int delay = 0;
-
- for (curr = (wdog_t*)g_wdactivelist.head; curr; curr = curr->next)
- {
- delay += curr->lag;
- if (curr == wdog)
- {
- irqrestore(flags);
- return delay;
- }
- }
- }
-
- irqrestore(flags);
- return 0;
-}