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authorChris Johns <chrisj@rtems.org>2017-12-23 18:18:56 +1100
committerSebastian Huber <sebastian.huber@embedded-brains.de>2018-01-25 08:45:26 +0100
commit2afb22b7e1ebcbe40373ff7e0efae7d207c655a9 (patch)
tree44759efe9374f13200a97e96d91bd9a2b7e5ce2a /cpukit/include/rtems/score/scheduleredfimpl.h
parentMAINTAINERS: Add myself to Write After Approval. (diff)
downloadrtems-2afb22b7e1ebcbe40373ff7e0efae7d207c655a9.tar.bz2
Remove make preinstall
A speciality of the RTEMS build system was the make preinstall step. It copied header files from arbitrary locations into the build tree. The header files were included via the -Bsome/build/tree/path GCC command line option. This has at least seven problems: * The make preinstall step itself needs time and disk space. * Errors in header files show up in the build tree copy. This makes it hard for editors to open the right file to fix the error. * There is no clear relationship between source and build tree header files. This makes an audit of the build process difficult. * The visibility of all header files in the build tree makes it difficult to enforce API barriers. For example it is discouraged to use BSP-specifics in the cpukit. * An introduction of a new build system is difficult. * Include paths specified by the -B option are system headers. This may suppress warnings. * The parallel build had sporadic failures on some hosts. This patch removes the make preinstall step. All installed header files are moved to dedicated include directories in the source tree. Let @RTEMS_CPU@ be the target architecture, e.g. arm, powerpc, sparc, etc. Let @RTEMS_BSP_FAMILIY@ be a BSP family base directory, e.g. erc32, imx, qoriq, etc. The new cpukit include directories are: * cpukit/include * cpukit/score/cpu/@RTEMS_CPU@/include * cpukit/libnetworking The new BSP include directories are: * bsps/include * bsps/@RTEMS_CPU@/include * bsps/@RTEMS_CPU@/@RTEMS_BSP_FAMILIY@/include There are build tree include directories for generated files. The include directory order favours the most general header file, e.g. it is not possible to override general header files via the include path order. The "bootstrap -p" option was removed. The new "bootstrap -H" option should be used to regenerate the "headers.am" files. Update #3254.
Diffstat (limited to 'cpukit/include/rtems/score/scheduleredfimpl.h')
-rw-r--r--cpukit/include/rtems/score/scheduleredfimpl.h164
1 files changed, 164 insertions, 0 deletions
diff --git a/cpukit/include/rtems/score/scheduleredfimpl.h b/cpukit/include/rtems/score/scheduleredfimpl.h
new file mode 100644
index 0000000000..f6bd7d8384
--- /dev/null
+++ b/cpukit/include/rtems/score/scheduleredfimpl.h
@@ -0,0 +1,164 @@
+/**
+ * @file
+ *
+ * @ingroup ScoreSchedulerEDF
+ *
+ * @brief EDF Scheduler Implementation
+ */
+
+/*
+ * Copryight (c) 2011 Petr Benes.
+ * Copyright (C) 2011 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.
+ */
+
+#ifndef _RTEMS_SCORE_SCHEDULEREDFIMPL_H
+#define _RTEMS_SCORE_SCHEDULEREDFIMPL_H
+
+#include <rtems/score/scheduleredf.h>
+#include <rtems/score/schedulerimpl.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @addtogroup ScoreSchedulerEDF
+ *
+ * @{
+ */
+
+/**
+ * This is just a most significant bit of Priority_Control type. It
+ * distinguishes threads which are deadline driven (priority
+ * represented by a lower number than @a SCHEDULER_EDF_PRIO_MSB) from those
+ * ones who do not have any deadlines and thus are considered background
+ * tasks.
+ */
+#define SCHEDULER_EDF_PRIO_MSB 0x8000000000000000
+
+RTEMS_INLINE_ROUTINE Scheduler_EDF_Context *
+ _Scheduler_EDF_Get_context( const Scheduler_Control *scheduler )
+{
+ return (Scheduler_EDF_Context *) _Scheduler_Get_context( scheduler );
+}
+
+RTEMS_INLINE_ROUTINE Scheduler_EDF_Node *_Scheduler_EDF_Thread_get_node(
+ Thread_Control *the_thread
+)
+{
+ return (Scheduler_EDF_Node *) _Thread_Scheduler_get_home_node( the_thread );
+}
+
+RTEMS_INLINE_ROUTINE Scheduler_EDF_Node * _Scheduler_EDF_Node_downcast(
+ Scheduler_Node *node
+)
+{
+ return (Scheduler_EDF_Node *) node;
+}
+
+RTEMS_INLINE_ROUTINE bool _Scheduler_EDF_Less(
+ const void *left,
+ const RBTree_Node *right
+)
+{
+ const Priority_Control *the_left;
+ const Scheduler_EDF_Node *the_right;
+ Priority_Control prio_left;
+ Priority_Control prio_right;
+
+ the_left = left;
+ the_right = RTEMS_CONTAINER_OF( right, Scheduler_EDF_Node, Node );
+
+ prio_left = *the_left;
+ prio_right = the_right->priority;
+
+ return prio_left < prio_right;
+}
+
+RTEMS_INLINE_ROUTINE bool _Scheduler_EDF_Priority_less_equal(
+ const void *left,
+ const RBTree_Node *right
+)
+{
+ const Priority_Control *the_left;
+ const Scheduler_EDF_Node *the_right;
+ Priority_Control prio_left;
+ Priority_Control prio_right;
+
+ the_left = left;
+ the_right = RTEMS_CONTAINER_OF( right, Scheduler_EDF_Node, Node );
+
+ prio_left = *the_left;
+ prio_right = the_right->priority;
+
+ return prio_left <= prio_right;
+}
+
+RTEMS_INLINE_ROUTINE void _Scheduler_EDF_Enqueue(
+ Scheduler_EDF_Context *context,
+ Scheduler_EDF_Node *node,
+ Priority_Control insert_priority
+)
+{
+ _RBTree_Insert_inline(
+ &context->Ready,
+ &node->Node,
+ &insert_priority,
+ _Scheduler_EDF_Priority_less_equal
+ );
+}
+
+RTEMS_INLINE_ROUTINE void _Scheduler_EDF_Extract(
+ Scheduler_EDF_Context *context,
+ Scheduler_EDF_Node *node
+)
+{
+ _RBTree_Extract( &context->Ready, &node->Node );
+}
+
+RTEMS_INLINE_ROUTINE void _Scheduler_EDF_Extract_body(
+ const Scheduler_Control *scheduler,
+ Thread_Control *the_thread,
+ Scheduler_Node *node
+)
+{
+ Scheduler_EDF_Context *context;
+ Scheduler_EDF_Node *the_node;
+
+ context = _Scheduler_EDF_Get_context( scheduler );
+ the_node = _Scheduler_EDF_Node_downcast( node );
+
+ _Scheduler_EDF_Extract( context, the_node );
+}
+
+RTEMS_INLINE_ROUTINE void _Scheduler_EDF_Schedule_body(
+ const Scheduler_Control *scheduler,
+ Thread_Control *the_thread,
+ bool force_dispatch
+)
+{
+ Scheduler_EDF_Context *context;
+ RBTree_Node *first;
+ Scheduler_EDF_Node *node;
+
+ (void) the_thread;
+
+ context = _Scheduler_EDF_Get_context( scheduler );
+ first = _RBTree_Minimum( &context->Ready );
+ node = RTEMS_CONTAINER_OF( first, Scheduler_EDF_Node, Node );
+
+ _Scheduler_Update_heir( node->Base.owner, force_dispatch );
+}
+
+/**@}*/
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
+/* end of include file */