116 lines
4.4 KiB
C
116 lines
4.4 KiB
C
/****************************************************************************
|
|
* sched/wdog/wdog_recover.c
|
|
*
|
|
* Copyright (C) 2014 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 <nuttx/arch.h>
|
|
#include <nuttx/wdog.h>
|
|
#include <nuttx/sched.h>
|
|
|
|
#include "wdog/wdog.h"
|
|
|
|
/****************************************************************************
|
|
* Pre-processor Definitions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Private Type Declarations
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Public Data
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Private Variables
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Private Function Prototypes
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Private Functions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Public Functions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Name: wd_recover
|
|
*
|
|
* Description:
|
|
* This function is called from task_recover() when a task is deleted via
|
|
* task_delete() or via pthread_cancel(). It checks if the deleted task
|
|
* is waiting for a timed event and if so cancels the timeout
|
|
*
|
|
* Inputs:
|
|
* tcb - The TCB of the terminated task or thread
|
|
*
|
|
* Return Value:
|
|
* None.
|
|
*
|
|
* Assumptions:
|
|
* This function is called from task deletion logic in a safe context.
|
|
*
|
|
****************************************************************************/
|
|
|
|
void wd_recover(FAR struct tcb_s *tcb)
|
|
{
|
|
irqstate_t flags;
|
|
|
|
/* The task is being deleted. If it is waiting for any timed event, then
|
|
* tcb->waitdog will be non-NULL. Cancel the watchdog now so that no
|
|
* events occur after the watchdog expires. Obviously there are lots of
|
|
* race conditions here so this will most certainly have to be revisited in
|
|
* the future.
|
|
*/
|
|
|
|
flags = irqsave();
|
|
if (tcb->waitdog)
|
|
{
|
|
(void)wd_cancel(tcb->waitdog);
|
|
(void)wd_delete(tcb->waitdog);
|
|
tcb->waitdog = NULL;
|
|
}
|
|
|
|
irqrestore(flags);
|
|
}
|