score: Delete _Chain_Get()

This function is not used in the score.

Update #2555.

cpukit/sapi/include/rtems/chain.h

@@ -591,18 +591,9 @@ RTEMS_INLINE_ROUTINE void rtems_chain_extract_unprotected(
  *
  *  NOTE: It disables interrupts to ensure the atomicity of the get operation.
  */
-#if defined( RTEMS_SMP )
 rtems_chain_node *rtems_chain_get(
   rtems_chain_control *the_chain
 );
-#else
-RTEMS_INLINE_ROUTINE rtems_chain_node *rtems_chain_get(
-  rtems_chain_control *the_chain
-)
-{
-  return _Chain_Get( the_chain );
-}
-#endif
 
 /**
  * @brief See _Chain_Get_unprotected().

cpukit/sapi/src/chainprotected.c

@@ -40,8 +40,6 @@ void rtems_chain_extract( rtems_chain_node *node )
   chain_release( &lock_context );
 }
 
-#if defined( RTEMS_SMP )
-
 rtems_chain_node *rtems_chain_get( rtems_chain_control *chain )
 {
   rtems_chain_node *node;
@@ -54,8 +52,6 @@ rtems_chain_node *rtems_chain_get( rtems_chain_control *chain )
   return node;
 }
 
-#endif /* defined( RTEMS_SMP ) */
-
 void rtems_chain_insert( rtems_chain_node *after_node, rtems_chain_node *node )
 {
   rtems_interrupt_lock_context lock_context;

cpukit/score/Makefile.am

@@ -346,7 +346,6 @@ libscore_a_SOURCES += src/userextaddset.c \
 
 ## STD_C_FILES
 libscore_a_SOURCES += src/chain.c src/chainappend.c \
-    src/chainget.c \
     src/chainnodecount.c \
     src/debugisthreaddispatchingallowed.c \
     src/interr.c src/isr.c src/wkspace.c src/wkstringduplicate.c

cpukit/score/include/rtems/score/chainimpl.h

@@ -79,22 +79,6 @@ void _Chain_Initialize(
   size_t         node_size
 );
 
-/**
- *  @brief Obtain the first node on a chain.
- *
- *  This function removes the first node from @a the_chain and returns
- *  a pointer to that node.  If @a the_chain is empty, then NULL is returned.
- *
- *  @retval This method returns a pointer a node.  If a node was removed,
- *          then a pointer to that node is returned.  If @a the_chain was
- *          empty, then NULL is returned.
- *
- *  @note It disables interrupts to ensure the atomicity of the get operation.
- */
-Chain_Node *_Chain_Get(
-  Chain_Control *the_chain
-);
-
 /**
  *  @brief Append a node on the end of a chain.
  *

cpukit/score/src/chainget.c

@@ -1,39 +0,0 @@
-/**
- * @file
- *
- * @brief Get the First Node
- * @ingroup ScoreChain
- */
-
-/*
- *  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 <rtems/system.h>
-#include <rtems/score/address.h>
-#include <rtems/score/chainimpl.h>
-#include <rtems/score/isr.h>
-
-Chain_Node *_Chain_Get(
-  Chain_Control *the_chain
-)
-{
-  ISR_Level          level;
-  Chain_Node *return_node;
-
-  return_node = NULL;
-  _ISR_Disable( level );
-    if ( !_Chain_Is_empty( the_chain ) )
-      return_node = _Chain_Get_first_unprotected( the_chain );
-  _ISR_Enable( level );
-  return return_node;
-}