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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/rtems/ratemonimpl.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/rtems/ratemonimpl.h')
-rw-r--r--cpukit/include/rtems/rtems/ratemonimpl.h158
1 files changed, 158 insertions, 0 deletions
diff --git a/cpukit/include/rtems/rtems/ratemonimpl.h b/cpukit/include/rtems/rtems/ratemonimpl.h
new file mode 100644
index 0000000000..ba38a3e61a
--- /dev/null
+++ b/cpukit/include/rtems/rtems/ratemonimpl.h
@@ -0,0 +1,158 @@
+/**
+ * @file
+ *
+ * @ingroup ClassicRateMonImpl
+ *
+ * @brief Classic Rate Monotonic Scheduler Implementation
+ */
+
+/* COPYRIGHT (c) 1989-2008.
+ * On-Line Applications Research Corporation (OAR).
+ * Copyright (c) 2016 embedded brains GmbH.
+ * COPYRIGHT (c) 2016 Kuan-Hsun Chen.
+ *
+ * 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_RTEMS_RATEMONIMPL_H
+#define _RTEMS_RTEMS_RATEMONIMPL_H
+
+#include <rtems/rtems/ratemon.h>
+#include <rtems/score/objectimpl.h>
+#include <rtems/score/schedulerimpl.h>
+#include <rtems/score/threadimpl.h>
+#include <rtems/score/watchdogimpl.h>
+
+#include <string.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @defgroup ClassicRateMonImpl Classic Rate Monotonic Scheduler Implementation
+ *
+ * @ingroup ClassicRateMon
+ *
+ * @{
+ */
+
+#define RATE_MONOTONIC_INTEND_TO_BLOCK \
+ ( THREAD_WAIT_CLASS_PERIOD | THREAD_WAIT_STATE_INTEND_TO_BLOCK )
+
+#define RATE_MONOTONIC_BLOCKED \
+ ( THREAD_WAIT_CLASS_PERIOD | THREAD_WAIT_STATE_BLOCKED )
+
+#define RATE_MONOTONIC_READY_AGAIN \
+ ( THREAD_WAIT_CLASS_PERIOD | THREAD_WAIT_STATE_READY_AGAIN )
+
+/**
+ * @brief Rate Monotonic Period Class Management Structure
+ *
+ * This instance of Objects_Information is used to manage the
+ * set of rate monotonic period instances.
+ */
+extern Objects_Information _Rate_monotonic_Information;
+
+/**
+ * @brief Allocates a period control block from
+ * the inactive chain of free period control blocks.
+ *
+ * This function allocates a period control block from
+ * the inactive chain of free period control blocks.
+ */
+RTEMS_INLINE_ROUTINE Rate_monotonic_Control *_Rate_monotonic_Allocate( void )
+{
+ return (Rate_monotonic_Control *)
+ _Objects_Allocate( &_Rate_monotonic_Information );
+}
+
+RTEMS_INLINE_ROUTINE void _Rate_monotonic_Acquire_critical(
+ Rate_monotonic_Control *the_period,
+ ISR_lock_Context *lock_context
+)
+{
+ _ISR_lock_Acquire( &the_period->Lock, lock_context );
+}
+
+RTEMS_INLINE_ROUTINE void _Rate_monotonic_Release(
+ Rate_monotonic_Control *the_period,
+ ISR_lock_Context *lock_context
+)
+{
+ _ISR_lock_Release_and_ISR_enable( &the_period->Lock, lock_context );
+}
+
+RTEMS_INLINE_ROUTINE Rate_monotonic_Control *_Rate_monotonic_Get(
+ Objects_Id id,
+ ISR_lock_Context *lock_context
+)
+{
+ return (Rate_monotonic_Control *)
+ _Objects_Get( id, lock_context, &_Rate_monotonic_Information );
+}
+
+void _Rate_monotonic_Timeout( Watchdog_Control *watchdog );
+
+/**
+ * @brief _Rate_monotonic_Get_status(
+ *
+ * This routine is invoked to compute the elapsed wall time and cpu
+ * time for a period.
+ *
+ * @param[in] the_period points to the period being operated upon.
+ * @param[out] wall_since_last_period is set to the wall time elapsed
+ * since the period was initiated.
+ * @param[out] cpu_since_last_period is set to the cpu time used by the
+ * owning thread since the period was initiated.
+ *
+ * @retval This routine returns true if the status can be determined
+ * and false otherwise.
+ */
+bool _Rate_monotonic_Get_status(
+ const Rate_monotonic_Control *the_period,
+ Timestamp_Control *wall_since_last_period,
+ Timestamp_Control *cpu_since_last_period
+);
+
+void _Rate_monotonic_Restart(
+ Rate_monotonic_Control *the_period,
+ Thread_Control *owner,
+ ISR_lock_Context *lock_context
+);
+
+void _Rate_monotonic_Cancel(
+ Rate_monotonic_Control *the_period,
+ Thread_Control *owner,
+ ISR_lock_Context *lock_context
+);
+
+RTEMS_INLINE_ROUTINE void _Rate_monotonic_Reset_min_time(
+ Timestamp_Control *min_time
+)
+{
+ _Timestamp_Set( min_time, 0x7fffffff, 0x7fffffff );
+}
+
+RTEMS_INLINE_ROUTINE void _Rate_monotonic_Reset_statistics(
+ Rate_monotonic_Control *the_period
+)
+{
+ Rate_monotonic_Statistics *statistics;
+
+ statistics = &the_period->Statistics;
+ memset( statistics, 0, sizeof( *statistics ) );
+ _Rate_monotonic_Reset_min_time( &statistics->min_wall_time );
+ _Rate_monotonic_Reset_min_time( &statistics->min_cpu_time );
+}
+
+/**@}*/
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
+/* end of include file */