source: rtems/cpukit/include/rtems/score/prioritybitmap.h @ 21275b58

5
Last change on this file since 21275b58 was 2afb22b, checked in by Chris Johns <chrisj@…>, on 12/23/17 at 07:18:56

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.

  • Property mode set to 100644
File size: 2.0 KB
Line 
1/**
2 *  @file  rtems/score/prioritybitmap.h
3 *
4 *  @brief Manipulation Routines for the Bitmap Priority Queue Implementation
5 *
6 *  This include file contains all thread priority manipulation routines for
7 *  the bit map priority queue implementation.
8 */
9
10/*
11 *  COPYRIGHT (c) 1989-2010.
12 *  On-Line Applications Research Corporation (OAR).
13 *
14 *  The license and distribution terms for this file may be
15 *  found in the file LICENSE in this distribution or at
16 *  http://www.rtems.org/license/LICENSE.
17 */
18
19#ifndef _RTEMS_SCORE_PRIORITYBITMAP_H
20#define _RTEMS_SCORE_PRIORITYBITMAP_H
21
22#include <rtems/score/cpu.h>
23
24#ifdef __cplusplus
25extern "C" {
26#endif
27
28/**
29 *  @defgroup ScorePriorityBitmap Bitmap Priority Thread Routines
30 *
31 *  @ingroup Score
32 */
33/**@{*/
34
35typedef uint16_t Priority_bit_map_Word;
36
37typedef struct {
38  /**
39   * @brief Each sixteen bit entry in this word is associated with one of the
40   * sixteen entries in the bit map.
41   */
42  Priority_bit_map_Word major_bit_map;
43
44  /**
45   * @brief Each bit in the bit map indicates whether or not there are threads
46   * ready at a particular priority.
47   *
48   * The mapping of individual priority levels to particular bits is processor
49   * dependent as is the value of each bit used to indicate that threads are
50   * ready at that priority.
51   */
52  Priority_bit_map_Word bit_map[ 16 ];
53} Priority_bit_map_Control;
54
55/**
56 *  The following record defines the information associated with
57 *  each thread to manage its interaction with the priority bit maps.
58 */
59typedef struct {
60  /** This is the address of minor bit map slot. */
61  Priority_bit_map_Word *minor;
62  /** This is the priority bit map ready mask. */
63  Priority_bit_map_Word  ready_major;
64  /** This is the priority bit map ready mask. */
65  Priority_bit_map_Word  ready_minor;
66  /** This is the priority bit map block mask. */
67  Priority_bit_map_Word  block_major;
68  /** This is the priority bit map block mask. */
69  Priority_bit_map_Word  block_minor;
70} Priority_bit_map_Information;
71
72/**@}*/
73
74#ifdef __cplusplus
75}
76#endif
77
78#endif
79/* end of include file */
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