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

5
Last change on this file since 2afb22b 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: 2.1 KB
Line 
1/**
2 * @file
3 *
4 * @brief POSIX Thread API Support
5 *
6 * This defines the POSIX thread API extension.
7 */
8
9/*
10 *  COPYRIGHT (c) 1989-2014.
11 *  On-Line Applications Research Corporation (OAR).
12 *
13 *  The license and distribution terms for this file may be
14 *  found in the file LICENSE in this distribution or at
15 *  http://www.rtems.org/license/LICENSE.
16 */
17
18#ifndef _RTEMS_POSIX_THREADSUP_H
19#define _RTEMS_POSIX_THREADSUP_H
20
21#include <rtems/score/thread.h>
22#include <rtems/score/watchdog.h>
23
24#include <pthread.h>
25#include <signal.h>
26
27/**
28 *  @defgroup POSIX_THREAD POSIX Thread API Extension
29 *
30 *  @ingroup POSIXAPI
31 *
32 */
33/**@{**/
34#ifdef __cplusplus
35extern "C" {
36#endif
37
38/**
39 * This defines the POSIX API support structure associated with
40 * each thread in a system with POSIX configured.
41 */
42typedef struct {
43  /**
44   * @brief Control block for the sporadic server scheduling policy.
45   */
46  struct {
47    /** The thread of this sporadic control block */
48    Thread_Control *thread;
49
50    /**
51     * @brief This is the timer which controls when the thread executes at high
52     * and low priority when using the sporadic server scheduling policy.
53     */
54    Watchdog_Control Timer;
55
56    /**
57     * @brief The low priority when using the sporadic server scheduling
58     * policy.
59     */
60    Priority_Node Low_priority;
61
62    /**
63     * @brief Replenishment period for sporadic server.
64     */
65    struct timespec sched_ss_repl_period;
66
67    /**
68     * @brief Initial budget for sporadic server.
69     */
70    struct timespec sched_ss_init_budget;
71
72    /**
73     * @brief Maximum pending replenishments.
74     *
75     * Only used by pthread_getschedparam() and pthread_getattr_np().
76    */
77    int sched_ss_max_repl;
78  } Sporadic;
79
80  /** This is the set of signals which are currently unblocked. */
81  sigset_t                signals_unblocked;
82  /** This is the set of signals which are currently pending. */
83  sigset_t                signals_pending;
84
85  /**
86   * @brief Signal post-switch action in case signals are pending.
87   */
88  Thread_Action           Signal_action;
89} POSIX_API_Control;
90
91/** @} */
92
93#ifdef __cplusplus
94}
95#endif
96
97#endif
98/* end of include file */
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