1 files changed, 0 insertions, 117 deletions
diff --git a/cpukit/score/src/watchdogtickle.c b/cpukit/score/src/watchdogtickle.c
deleted file mode 100644
index 8c1a3a74b9..0000000000
--- a/cpukit/score/src/watchdogtickle.c
+++ /dev/null
@@ -1,117 +0,0 @@
-/**
- * @file
- *
- * @ingroup ScoreWatchdog
- * @brief Watchdog Tickle
- */
- 
-/*
- *  COPYRIGHT (c) 1989-1999.
- *  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 <rtems/score/watchdogimpl.h>
-#include <rtems/score/isrlevel.h>
-
-void _Watchdog_Tickle(
-  Watchdog_Header *header
-)
-{
-  ISR_Level level;
-  Watchdog_Control *the_watchdog;
-  Watchdog_States  watchdog_state;
-
-  /*
-   * See the comment in watchdoginsert.c and watchdogadjust.c
-   * about why it's safe not to declare header a pointer to
-   * volatile data - till, 2003/7
-   */
-
-  _ISR_Disable( level );
-
-  if ( _Watchdog_Is_empty( header ) )
-    goto leave;
-
-  the_watchdog = _Watchdog_First( header );
-
-  /*
-   * For some reason, on rare occasions the_watchdog->delta_interval
-   * of the head of the watchdog chain is 0.  Before this test was
-   * added, on these occasions an event (which usually was supposed
-   * to have a timeout of 1 tick would have a delta_interval of 0, which
-   * would be decremented to 0xFFFFFFFF by the unprotected
-   * "the_watchdog->delta_interval--;" operation.
-   * This would mean the event would not timeout, and also the chain would
-   * be blocked, because a timeout with a very high number would be at the
-   * head, rather than at the end.
-   * The test "if (the_watchdog->delta_interval != 0)"
-   * here prevents this from occuring.
-   *
-   * We were not able to categorically identify the situation that causes
-   * this, but proved it to be true empirically.  So this check causes
-   * correct behaviour in this circumstance.
-   *
-   * The belief is that a race condition exists whereby an event at the head
-   * of the chain is removed (by a pending ISR or higher priority task)
-   * during the _ISR_Flash( level ); in _Watchdog_Insert, but the watchdog
-   * to be inserted has already had its delta_interval adjusted to 0, and
-   * so is added to the head of the chain with a delta_interval of 0.
-   *
-   * Steven Johnson - 12/2005 (gcc-3.2.3 -O3 on powerpc)
-   */
-  if (the_watchdog->delta_interval != 0) {
-    the_watchdog->delta_interval--;
-    if ( the_watchdog->delta_interval != 0 )
-      goto leave;
-  }
-
-  do {
-     watchdog_state = _Watchdog_Remove( the_watchdog );
-
-     _ISR_Enable( level );
-
-     switch( watchdog_state ) {
-       case WATCHDOG_ACTIVE:
-         (*the_watchdog->routine)(
-           the_watchdog->id,
-           the_watchdog->user_data
-         );
-         break;
-
-       case WATCHDOG_INACTIVE:
-         /*
-          *  This state indicates that the watchdog is not on any chain.
-          *  Thus, it is NOT on a chain being tickled.  This case should
-          *  never occur.
-          */
-         break;
-
-       case WATCHDOG_BEING_INSERTED:
-         /*
-          *  This state indicates that the watchdog is in the process of
-          *  BEING inserted on the chain.  Thus, it can NOT be on a chain
-          *  being tickled.  This case should never occur.
-          */
-         break;
-
-       case WATCHDOG_REMOVE_IT:
-         break;
-     }
-
-     _ISR_Disable( level );
-
-     the_watchdog = _Watchdog_First( header );
-   } while ( !_Watchdog_Is_empty( header ) &&
-             (the_watchdog->delta_interval == 0) );
-
-leave:
-   _ISR_Enable(level);
-}