source: rtems/cpukit/include/rtems/posix/key.h @ 2afb22b

Last change on this file since 2afb22b was 2afb22b, checked in by Chris Johns <chrisj@…>, on Dec 23, 2017 at 7:18:56 AM

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: 1.8 KB
Line 
1/**
2 * @file
3 *
4 * @brief POSIX Key Private Support
5 *
6 * This include file contains all the private support information for
7 * POSIX key.
8 */
9
10/*
11 * Copyright (c) 2012 Zhongwei Yao.
12 * COPYRIGHT (c) 1989-2011.
13 * On-Line Applications Research Corporation (OAR).
14 * Copyright (c) 2016 embedded brains GmbH.
15 *
16 * The license and distribution terms for this file may be
17 * found in the file LICENSE in this distribution or at
18 * http://www.rtems.org/license/LICENSE.
19 */
20
21#ifndef _RTEMS_POSIX_KEY_H
22#define _RTEMS_POSIX_KEY_H
23
24#include <pthread.h>
25
26#include <rtems/score/chain.h>
27#include <rtems/score/object.h>
28#include <rtems/score/rbtree.h>
29#include <rtems/score/thread.h>
30
31#ifdef __cplusplus
32extern "C" {
33#endif
34
35/**
36 * @defgroup POSIX_KEY POSIX Key
37 *
38 * @ingroup POSIXAPI
39 *
40 */
41/**@{**/
42
43/**
44 * @brief Represents POSIX key and value pair.
45 */
46typedef struct {
47  /**
48   * @brief The chain node for the key value pairs chain in POSIX_Keys_Control.
49   */
50  Chain_Node Key_node;
51
52  /**
53   * @brief The tree node for the lookup tree in Thread_Keys_information.
54   */
55  RBTree_Node Lookup_node;
56
57  /**
58   * @brief The POSIX key identifier used as the tree key.
59   */
60  pthread_key_t key;
61
62  /**
63   * @brief The corresponding thread.
64   */
65  Thread_Control *thread;
66
67  /**
68   * @brief The thread specific POSIX key value.
69   */
70  void *value;
71} POSIX_Keys_Key_value_pair;
72
73/**
74 * @brief The data structure used to manage a POSIX key.
75 */
76typedef struct {
77   /** This field is the Object control structure. */
78   Objects_Control     Object;
79   /** This field is the data destructor. */
80   void (*destructor) (void *);
81
82   /**
83    * @brief Key value pairs of this key.
84    */
85   Chain_Control Key_value_pairs;
86 }  POSIX_Keys_Control;
87
88/** @} */
89
90#ifdef __cplusplus
91}
92#endif
93
94#endif
95/*  end of include file */
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