score: Delete _Chain_Prepend()

This function is not used in the score.

Update #2555.

cpukit/sapi/Makefile.am

@@ -35,7 +35,7 @@ libsapi_a_SOURCES = src/extension.c src/extensioncreate.c \
     src/chainappendnotify.c src/chaingetnotify.c src/chaingetwait.c \
     src/chainprependnotify.c src/rbheap.c src/interrtext.c \
     src/fatal2.c src/fatalsrctext.c
-libsapi_a_SOURCES += src/chainsmp.c
+libsapi_a_SOURCES += src/chainprotected.c
 libsapi_a_SOURCES += src/cpucounterconverter.c
 libsapi_a_SOURCES += src/delayticks.c
 libsapi_a_SOURCES += src/delaynano.c

cpukit/sapi/include/rtems/chain.h

@@ -718,20 +718,10 @@ RTEMS_INLINE_ROUTINE void rtems_chain_append_unprotected(
  * NOTE: It disables interrupts to ensure the atomicity of the
  *       prepend operation.
  */
-#if defined( RTEMS_SMP )
 void rtems_chain_prepend(
   rtems_chain_control *the_chain,
   rtems_chain_node    *the_node
 );
-#else
-RTEMS_INLINE_ROUTINE void rtems_chain_prepend(
-  rtems_chain_control *the_chain,
-  rtems_chain_node    *the_node
-)
-{
-  _Chain_Prepend( the_chain, the_node );
-}
-#endif
 
 /** 
  * @brief Prepend a node (unprotected).

cpukit/sapi/src/chainprotected.c

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2013-2014 embedded brains GmbH.  All rights reserved.
+ * Copyright (c) 2013, 2016 embedded brains GmbH.  All rights reserved.
  *
  *  embedded brains GmbH
  *  Dornierstr. 4
@@ -17,26 +17,25 @@
 #endif
 
 #include <rtems/chain.h>
+#include <rtems/rtems/intr.h>
+
+RTEMS_INTERRUPT_LOCK_DEFINE( static, chain_lock, "Chains" )
+
+static void chain_acquire( rtems_interrupt_lock_context *lock_context )
+{
+  rtems_interrupt_lock_acquire( &chain_lock, lock_context );
+}
+
+static void chain_release( rtems_interrupt_lock_context *lock_context )
+{
+  rtems_interrupt_lock_release( &chain_lock, lock_context );
+}
 
 #if defined( RTEMS_SMP )
 
-#include <rtems/score/smplock.h>
-
-static SMP_lock_Control chain_lock = SMP_LOCK_INITIALIZER("chains");
-
-static void chain_acquire( SMP_lock_Context *lock_context )
-{
-  _SMP_lock_ISR_disable_and_acquire( &chain_lock, lock_context );
-}
-
-static void chain_release( SMP_lock_Context *lock_context )
-{
-  _SMP_lock_Release_and_ISR_enable( &chain_lock, lock_context );
-}
-
 void rtems_chain_extract( rtems_chain_node *node )
 {
-  SMP_lock_Context lock_context;
+  rtems_interrupt_lock_context lock_context;
 
   chain_acquire( &lock_context );
   _Chain_Extract_unprotected( node );
@@ -46,7 +45,7 @@ void rtems_chain_extract( rtems_chain_node *node )
 rtems_chain_node *rtems_chain_get( rtems_chain_control *chain )
 {
   rtems_chain_node *node;
-  SMP_lock_Context lock_context;
+  rtems_interrupt_lock_context lock_context;
 
   chain_acquire( &lock_context );
   node = _Chain_Get_unprotected( chain );
@@ -57,7 +56,7 @@ rtems_chain_node *rtems_chain_get( rtems_chain_control *chain )
 
 void rtems_chain_insert( rtems_chain_node *after_node, rtems_chain_node *node )
 {
-  SMP_lock_Context lock_context;
+  rtems_interrupt_lock_context lock_context;
 
   chain_acquire( &lock_context );
   _Chain_Insert_unprotected( after_node, node );
@@ -69,32 +68,36 @@ void rtems_chain_append(
   rtems_chain_node *node
 )
 {
-  SMP_lock_Context lock_context;
+  rtems_interrupt_lock_context lock_context;
 
   chain_acquire( &lock_context );
   _Chain_Append_unprotected( chain, node );
   chain_release( &lock_context );
 }
 
+#endif /* defined( RTEMS_SMP ) */
+
 void rtems_chain_prepend(
   rtems_chain_control *chain,
   rtems_chain_node *node
 )
 {
-  SMP_lock_Context lock_context;
+  rtems_interrupt_lock_context lock_context;
 
   chain_acquire( &lock_context );
   _Chain_Prepend_unprotected( chain, node );
   chain_release( &lock_context );
 }
 
+#if defined( RTEMS_SMP )
+
 bool rtems_chain_append_with_empty_check(
   rtems_chain_control *chain,
   rtems_chain_node *node
 )
 {
   bool was_empty;
-  SMP_lock_Context lock_context;
+  rtems_interrupt_lock_context lock_context;
 
   chain_acquire( &lock_context );
   was_empty = _Chain_Append_with_empty_check_unprotected( chain, node );
@@ -109,7 +112,7 @@ bool rtems_chain_prepend_with_empty_check(
 )
 {
   bool was_empty;
-  SMP_lock_Context lock_context;
+  rtems_interrupt_lock_context lock_context;
 
   chain_acquire( &lock_context );
   was_empty = _Chain_Prepend_with_empty_check_unprotected( chain, node );
@@ -124,7 +127,7 @@ bool rtems_chain_get_with_empty_check(
 )
 {
   bool is_empty_now;
-  SMP_lock_Context lock_context;
+  rtems_interrupt_lock_context lock_context;
 
   chain_acquire( &lock_context );
   is_empty_now = _Chain_Get_with_empty_check_unprotected( chain, node );

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

@@ -792,25 +792,6 @@ RTEMS_INLINE_ROUTINE void _Chain_Prepend_unprotected(
   _Chain_Insert_unprotected(_Chain_Head(the_chain), the_node);
 }
 
-/**
- * @brief Prepend a node (protected).
- *
- * This routine prepends the_node onto the front of the_chain.
- *
- * @param[in] the_chain is the chain to be operated upon.
- * @param[in] the_node is the node to be prepended.
- *
- * @note It disables interrupts to ensure the atomicity of the
- *       prepend operation.
- */
-RTEMS_INLINE_ROUTINE void _Chain_Prepend(
-  Chain_Control *the_chain,
-  Chain_Node    *the_node
-)
-{
-  _Chain_Insert(_Chain_Head(the_chain), the_node);
-}
-
 /**
  * @brief Append a node and check if the chain was empty before (unprotected).
  *