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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/threadmp.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/threadmp.h')
-rw-r--r--cpukit/include/rtems/score/threadmp.h113
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diff --git a/cpukit/include/rtems/score/threadmp.h b/cpukit/include/rtems/score/threadmp.h
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+++ b/cpukit/include/rtems/score/threadmp.h
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+/**
+ * @file rtems/score/threadmp.h
+ *
+ * @brief Multiprocessing Portion of the Thread Package
+ *
+ * This include file contains the specification for all routines
+ * and data specific to the multiprocessing portion of the thread package.
+ */
+
+/*
+ * COPYRIGHT (c) 1989-2009.
+ * 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_THREADMP_H
+#define _RTEMS_SCORE_THREADMP_H
+
+#ifndef _RTEMS_SCORE_THREADIMPL_H
+# error "Never use <rtems/score/threadmp.h> directly; include <rtems/score/threadimpl.h> instead."
+#endif
+
+#include <rtems/score/mpciimpl.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @defgroup ScoreThreadMP Thread Handler Multiprocessing Support
+ *
+ * @ingroup Score
+ *
+ * This handler encapsulates functionality which is related to managing
+ * threads in a multiprocessor system configuration. This handler must
+ * manage proxies which represent remote threads blocking on local
+ * operations.
+ */
+/**@{*/
+
+/**
+ * @brief Initialize MP thread handler.
+ *
+ * This routine initializes the multiprocessing portion of the Thread Handler.
+ */
+void _Thread_MP_Handler_initialization (
+ uint32_t maximum_proxies
+);
+
+/**
+ * @brief Allocate a MP proxy control block from
+ * the inactive chain of free proxy control blocks.
+ *
+ * This allocates a proxy control block from
+ * the inactive chain of free proxy control blocks.
+ *
+ * @note This function returns a thread control pointer
+ * because proxies are substitutes for remote threads.
+ */
+Thread_Control *_Thread_MP_Allocate_proxy (
+ States_Control the_state
+);
+
+/**
+ * @brief Removes the MP proxy control block for the specified
+ * id from the active chain of proxy control blocks.
+ *
+ * This function removes the proxy control block for the specified
+ * id from the active red-black tree of proxy control blocks.
+ */
+Thread_Control *_Thread_MP_Find_proxy (
+ Objects_Id the_id
+);
+
+/**
+ * This function returns true if the thread in question is the
+ * multiprocessing receive thread.
+ *
+ * @note This is a macro to avoid needing a prototype for
+ * _MPCI_Receive_server_tcb until it is used.
+ */
+#define _Thread_MP_Is_receive(_the_thread) \
+ ((_the_thread) == _MPCI_Receive_server_tcb)
+
+/**
+ * This routine frees a proxy control block to the
+ * inactive chain of free proxy control blocks.
+ */
+void _Thread_MP_Free_proxy( Thread_Control *the_thread );
+
+RTEMS_INLINE_ROUTINE bool _Thread_MP_Is_remote( Objects_Id id )
+{
+ Objects_Information *information;
+
+ information = _Thread_Get_objects_information( id );
+ if ( information == NULL ) {
+ return false;
+ }
+
+ return _Objects_MP_Is_remote( id, information );
+}
+
+/**@}*/
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
+/* end of include file */