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- /****************************************************************************
- * sched/wdog/wdog_recover.c
- *
- * Copyright (C) 2014, 2016 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/irq.h>
- #include <nuttx/arch.h>
- #include <nuttx/wdog.h>
- #include <nuttx/sched.h>
- #include "wdog/wdog.h"
- /****************************************************************************
- * 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
- *
- * Input Parameters:
- * tcb - The TCB of the terminated task or thread
- *
- * Returned 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 = enter_critical_section();
- if (tcb->waitdog)
- {
- (void)wd_cancel(tcb->waitdog);
- (void)wd_delete(tcb->waitdog);
- tcb->waitdog = NULL;
- }
- leave_critical_section(flags);
- }
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