rtems: Add scheduler identification

6 files changed, 85 insertions, 1 deletions

diff --git a/cpukit/rtems/Makefile.am b/cpukit/rtems/Makefile.am
index b6a19c4f14..57b15ca097 100644
--- a/cpukit/rtems/Makefile.am
+++ b/cpukit/rtems/Makefile.am
@@ -116,6 +116,7 @@ librtems_a_SOURCES += src/taskvariableget.c
 librtems_a_SOURCES += src/taskvariable_invoke_dtor.c
 endif
 librtems_a_SOURCES += src/taskdata.c
+librtems_a_SOURCES += src/schedulerident.c
 
 ## RATEMON_C_FILES
 librtems_a_SOURCES += src/ratemon.c
diff --git a/cpukit/rtems/include/rtems/rtems/tasks.h b/cpukit/rtems/include/rtems/rtems/tasks.h
index 87128be5f5..5816e7d884 100644
--- a/cpukit/rtems/include/rtems/rtems/tasks.h
+++ b/cpukit/rtems/include/rtems/rtems/tasks.h
@@ -548,6 +548,23 @@ rtems_status_code rtems_task_set_affinity(
  */
 rtems_id rtems_task_self(void);
 
+/**
+ * @brief Identifies a scheduler by its name.
+ *
+ * The scheduler name is determined by the scheduler configuration.
+ *
+ * @param[in] name The scheduler name.
+ * @param[out] id The scheduler identifier associated with the name.
+ *
+ * @retval RTEMS_SUCCESSFUL Successful operation.
+ * @retval RTEMS_INVALID_ADDRESS The @a id parameter is @c NULL.
+ * @retval RTEMS_INVALID_NAME Invalid scheduler name.
+ */
+rtems_status_code rtems_scheduler_ident(
+  rtems_name  name,
+  rtems_id   *id
+);
+
 /**@}*/
 
 /**
diff --git a/cpukit/rtems/src/schedulerident.c b/cpukit/rtems/src/schedulerident.c
new file mode 100644
index 0000000000..d9e913c946
--- /dev/null
+++ b/cpukit/rtems/src/schedulerident.c
@@ -0,0 +1,46 @@
+/*
+ * Copyright (c) 2014 embedded brains GmbH.  All rights reserved.
+ *
+ *  embedded brains GmbH
+ *  Dornierstr. 4
+ *  82178 Puchheim
+ *  Germany
+ *  <rtems@embedded-brains.de>
+ *
+ * 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/rtems/tasks.h>
+#include <rtems/score/schedulerimpl.h>
+
+rtems_status_code rtems_scheduler_ident(
+  rtems_name  name,
+  rtems_id   *id
+)
+{
+  rtems_status_code sc;
+
+  if ( id != NULL ) {
+    size_t n = _Scheduler_Count;
+    size_t i;
+
+    sc = RTEMS_INVALID_NAME;
+
+    for ( i = 0 ; i < n && sc == RTEMS_INVALID_NAME ; ++i ) {
+      if ( _Scheduler_Table[ i ].name == name ) {
+        *id = _Scheduler_Build_id( i );
+        sc = RTEMS_SUCCESSFUL;
+      }
+    }
+  } else {
+    sc = RTEMS_INVALID_ADDRESS;
+  }
+
+  return sc;
+}
diff --git a/cpukit/score/include/rtems/score/object.h b/cpukit/score/include/rtems/score/object.h
index 0ccafbfac9..4eb66ad487 100644
--- a/cpukit/score/include/rtems/score/object.h
+++ b/cpukit/score/include/rtems/score/object.h
@@ -217,7 +217,8 @@ typedef enum {
   OBJECTS_NO_API       = 0,
   OBJECTS_INTERNAL_API = 1,
   OBJECTS_CLASSIC_API  = 2,
-  OBJECTS_POSIX_API    = 3
+  OBJECTS_POSIX_API    = 3,
+  OBJECTS_FAKE_OBJECTS_API = 7
 } Objects_APIs;
 
 /** This macro is used to generically specify the last API index. */
diff --git a/cpukit/score/include/rtems/score/objectimpl.h b/cpukit/score/include/rtems/score/objectimpl.h
index 383f0a738b..4e626ae663 100644
--- a/cpukit/score/include/rtems/score/objectimpl.h
+++ b/cpukit/score/include/rtems/score/objectimpl.h
@@ -100,6 +100,15 @@ typedef enum {
 /** This macro is used to generically specify the last API index. */
 #define OBJECTS_POSIX_CLASSES_LAST OBJECTS_POSIX_RWLOCKS
 
+/*
+ * For fake objects, which have an object identifier, but no objects
+ * information block.
+ */
+typedef enum {
+  OBJECTS_FAKE_OBJECTS_NO_CLASS   = 0,
+  OBJECTS_FAKE_OBJECTS_SCHEDULERS = 1
+} Objects_Fake_objects_API;
+
 /**
  *  This enumerated type lists the locations which may be returned
  *  by _Objects_Get.  These codes indicate the success of locating
diff --git a/cpukit/score/include/rtems/score/schedulerimpl.h b/cpukit/score/include/rtems/score/schedulerimpl.h
index e088d26b88..01be51518e 100644
--- a/cpukit/score/include/rtems/score/schedulerimpl.h
+++ b/cpukit/score/include/rtems/score/schedulerimpl.h
@@ -451,6 +451,16 @@ RTEMS_INLINE_ROUTINE const Scheduler_Control *_Scheduler_Get(
   return &_Scheduler_Table[ 0 ];
 }
 
+RTEMS_INLINE_ROUTINE Objects_Id _Scheduler_Build_id( uint32_t scheduler_index )
+{
+  return _Objects_Build_id(
+    OBJECTS_FAKE_OBJECTS_API,
+    OBJECTS_FAKE_OBJECTS_SCHEDULERS,
+    _Objects_Local_node,
+    scheduler_index + 1
+  );
+}
+
 /** @} */
 
 #ifdef __cplusplus