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/**
* @file
*
* @brief Helper Routine for POSIX TIMERS
* @ingroup POSIXAPI
*/
/*
* Helper routine for POSIX timers
*
* COPYRIGHT (c) 1989-2007.
* On-Line Applications Research Corporation (OAR).
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.org/license/LICENSE.
*/
#if HAVE_CONFIG_H
#include "config.h"
#endif
#include <time.h>
#include <rtems/system.h>
#include <rtems/seterr.h>
#include <rtems/score/isr.h>
#include <rtems/score/watchdogimpl.h>
#include <rtems/posix/timerimpl.h>
#include <rtems/posix/ptimer.h>
bool _POSIX_Timer_Insert_helper(
Watchdog_Control *timer,
Watchdog_Interval ticks,
Objects_Id id,
Watchdog_Service_routine_entry TSR,
void *arg
)
{
ISR_lock_Context lock_context;
Watchdog_Header *header;
_Watchdog_Remove_ticks( timer );
header = &_Watchdog_Ticks_header;
_Watchdog_Acquire( header, &lock_context );
/*
* Check to see if the watchdog has just been inserted by a
* higher priority interrupt. If so, abandon this insert.
*/
if ( timer->state != WATCHDOG_INACTIVE ) {
_Watchdog_Release( header, &lock_context );
return false;
}
/*
* OK. Now we now the timer was not rescheduled by an interrupt
* so we can atomically initialize it as in use.
*/
_Watchdog_Initialize( timer, TSR, id, arg );
timer->initial = ticks;
_Watchdog_Insert_locked( header, timer, &lock_context );
_Watchdog_Release( header, &lock_context );
return true;
}
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