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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/prioritybitmap.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/prioritybitmap.h')
-rw-r--r--cpukit/include/rtems/score/prioritybitmap.h79
1 files changed, 79 insertions, 0 deletions
diff --git a/cpukit/include/rtems/score/prioritybitmap.h b/cpukit/include/rtems/score/prioritybitmap.h
new file mode 100644
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+++ b/cpukit/include/rtems/score/prioritybitmap.h
@@ -0,0 +1,79 @@
+/**
+ * @file rtems/score/prioritybitmap.h
+ *
+ * @brief Manipulation Routines for the Bitmap Priority Queue Implementation
+ *
+ * This include file contains all thread priority manipulation routines for
+ * the bit map priority queue implementation.
+ */
+
+/*
+ * COPYRIGHT (c) 1989-2010.
+ * 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_PRIORITYBITMAP_H
+#define _RTEMS_SCORE_PRIORITYBITMAP_H
+
+#include <rtems/score/cpu.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @defgroup ScorePriorityBitmap Bitmap Priority Thread Routines
+ *
+ * @ingroup Score
+ */
+/**@{*/
+
+typedef uint16_t Priority_bit_map_Word;
+
+typedef struct {
+ /**
+ * @brief Each sixteen bit entry in this word is associated with one of the
+ * sixteen entries in the bit map.
+ */
+ Priority_bit_map_Word major_bit_map;
+
+ /**
+ * @brief Each bit in the bit map indicates whether or not there are threads
+ * ready at a particular priority.
+ *
+ * The mapping of individual priority levels to particular bits is processor
+ * dependent as is the value of each bit used to indicate that threads are
+ * ready at that priority.
+ */
+ Priority_bit_map_Word bit_map[ 16 ];
+} Priority_bit_map_Control;
+
+/**
+ * The following record defines the information associated with
+ * each thread to manage its interaction with the priority bit maps.
+ */
+typedef struct {
+ /** This is the address of minor bit map slot. */
+ Priority_bit_map_Word *minor;
+ /** This is the priority bit map ready mask. */
+ Priority_bit_map_Word ready_major;
+ /** This is the priority bit map ready mask. */
+ Priority_bit_map_Word ready_minor;
+ /** This is the priority bit map block mask. */
+ Priority_bit_map_Word block_major;
+ /** This is the priority bit map block mask. */
+ Priority_bit_map_Word block_minor;
+} Priority_bit_map_Information;
+
+/**@}*/
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
+/* end of include file */