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-rw-r--r--cpukit/score/src/watchdog.c273
1 files changed, 0 insertions, 273 deletions
diff --git a/cpukit/score/src/watchdog.c b/cpukit/score/src/watchdog.c
deleted file mode 100644
index 2ada0ff71e..0000000000
--- a/cpukit/score/src/watchdog.c
+++ /dev/null
@@ -1,273 +0,0 @@
-/*
- * Watchdog Handler
- *
- *
- * COPYRIGHT (c) 1989, 1990, 1991, 1992, 1993, 1994.
- * On-Line Applications Research Corporation (OAR).
- * All rights assigned to U.S. Government, 1994.
- *
- * This material may be reproduced by or for the U.S. Government pursuant
- * to the copyright license under the clause at DFARS 252.227-7013. This
- * notice must appear in all copies of this file and its derivatives.
- *
- * $Id$
- */
-
-#include <rtems/system.h>
-#include <rtems/score/isr.h>
-#include <rtems/score/watchdog.h>
-
-/*PAGE
- *
- * _Watchdog_Handler_initialization
- *
- * This routine initializes the watchdog handler.
- *
- * Input parameters: NONE
- *
- * Output parameters: NONE
- */
-
-void _Watchdog_Handler_initialization( void )
-{
- _Watchdog_Sync_count = 0;
- _Watchdog_Sync_level = 0;
- _Watchdog_Ticks_since_boot = 0;
-
- _Chain_Initialize_empty( &_Watchdog_Ticks_chain );
- _Chain_Initialize_empty( &_Watchdog_Seconds_chain );
-}
-
-/*PAGE
- *
- * _Watchdog_Remove
- *
- * The routine removes a watchdog from a delta chain and updates
- * the delta counters of the remaining watchdogs.
- */
-
-Watchdog_States _Watchdog_Remove(
- Watchdog_Control *the_watchdog
-)
-{
- ISR_Level level;
- Watchdog_States previous_state;
- Watchdog_Control *next_watchdog;
-
- _ISR_Disable( level );
- previous_state = the_watchdog->state;
- switch ( previous_state ) {
- case WATCHDOG_INACTIVE:
- break;
-
- case WATCHDOG_BEING_INSERTED:
-
- /*
- * It is not actually on the chain so just change the state and
- * the Insert operation we interrupted will be aborted.
- */
- the_watchdog->state = WATCHDOG_INACTIVE;
- break;
-
- case WATCHDOG_ACTIVE:
- case WATCHDOG_REMOVE_IT:
-
- the_watchdog->state = WATCHDOG_INACTIVE;
- next_watchdog = _Watchdog_Next( the_watchdog );
-
- if ( _Watchdog_Next(next_watchdog) )
- next_watchdog->delta_interval += the_watchdog->delta_interval;
-
- if ( _Watchdog_Sync_count )
- _Watchdog_Sync_level = _ISR_Nest_level;
-
- _Chain_Extract_unprotected( &the_watchdog->Node );
- break;
- }
- the_watchdog->stop_time = _Watchdog_Ticks_since_boot;
-
- _ISR_Enable( level );
- return( previous_state );
-}
-
-/*PAGE
- *
- * _Watchdog_Adjust
- *
- * This routine adjusts the delta chain backward or forward in response
- * to a time change.
- *
- * Input parameters:
- * header - pointer to the delta chain to be adjusted
- * direction - forward or backward adjustment to delta chain
- * units - units to adjust
- *
- * Output parameters:
- */
-
-void _Watchdog_Adjust(
- Chain_Control *header,
- Watchdog_Adjust_directions direction,
- Watchdog_Interval units
-)
-{
- if ( !_Chain_Is_empty( header ) ) {
- switch ( direction ) {
- case WATCHDOG_BACKWARD:
- _Watchdog_First( header )->delta_interval += units;
- break;
- case WATCHDOG_FORWARD:
- while ( units ) {
- if ( units < _Watchdog_First( header )->delta_interval ) {
- _Watchdog_First( header )->delta_interval -= units;
- break;
- } else {
- units -= _Watchdog_First( header )->delta_interval;
- _Watchdog_First( header )->delta_interval = 1;
- _Watchdog_Tickle( header );
- if ( _Chain_Is_empty( header ) )
- break;
- }
- }
- break;
- }
- }
-}
-
-/*PAGE
- *
- * _Watchdog_Insert
- *
- * This routine inserts a watchdog timer on to the appropriate delta
- * chain while updating the delta interval counters.
- */
-
-void _Watchdog_Insert(
- Chain_Control *header,
- Watchdog_Control *the_watchdog
-)
-{
- ISR_Level level;
- Watchdog_Control *after;
- unsigned32 insert_isr_nest_level;
- Watchdog_Interval delta_interval;
-
-
- insert_isr_nest_level = _ISR_Nest_level;
- the_watchdog->state = WATCHDOG_BEING_INSERTED;
-
- _Watchdog_Sync_count++;
-restart:
- delta_interval = the_watchdog->initial;
-
- _ISR_Disable( level );
-
- for ( after = _Watchdog_First( header ) ;
- ;
- after = _Watchdog_Next( after ) ) {
-
- if ( delta_interval == 0 || !_Watchdog_Next( after ) )
- break;
-
- if ( delta_interval < after->delta_interval ) {
- after->delta_interval -= delta_interval;
- break;
- }
-
- delta_interval -= after->delta_interval;
-
- /*
- * If you experience problems comment out the _ISR_Flash line.
- * 3.2.0 was the first release with this critical section redesigned.
- * Under certain circumstances, the PREVIOUS critical section algorithm
- * used around this flash point allowed interrupts to execute
- * which violated the design assumptions. The critical section
- * mechanism used here WAS redesigned to address this.
- */
-
- _ISR_Flash( level );
-
- if ( the_watchdog->state != WATCHDOG_BEING_INSERTED ) {
- goto exit_insert;
- }
-
- if ( _Watchdog_Sync_level > insert_isr_nest_level ) {
- _Watchdog_Sync_level = insert_isr_nest_level;
- _ISR_Enable( level );
- goto restart;
- }
- }
-
- _Watchdog_Activate( the_watchdog );
-
- the_watchdog->delta_interval = delta_interval;
-
- _Chain_Insert_unprotected( after->Node.previous, &the_watchdog->Node );
-
- the_watchdog->start_time = _Watchdog_Ticks_since_boot;
-
-exit_insert:
- _Watchdog_Sync_level = insert_isr_nest_level;
- _Watchdog_Sync_count--;
- _ISR_Enable( level );
-}
-
-/*PAGE
- *
- * _Watchdog_Tickle
- *
- * This routine decrements the delta counter in response to a tick. The
- * delta chain is updated accordingly.
- *
- * Input parameters:
- * header - pointer to the delta chain to be tickled
- *
- * Output parameters: NONE
- */
-
-void _Watchdog_Tickle(
- Chain_Control *header
-)
-{
- Watchdog_Control *the_watchdog;
-
- if ( _Chain_Is_empty( header ) )
- return;
-
- the_watchdog = _Watchdog_First( header );
- the_watchdog->delta_interval--;
- if ( the_watchdog->delta_interval != 0 )
- return;
-
- do {
- switch( _Watchdog_Remove( the_watchdog ) ) {
- 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;
- }
- the_watchdog = _Watchdog_First( header );
- } while ( !_Chain_Is_empty( header ) &&
- (the_watchdog->delta_interval == 0) );
-}
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