source: rtems/cpukit/include/rtems/posix/spinlockimpl.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: 1.1 KB
Line 
1/**
2 * @file
3 *
4 * @brief Inlined Routines from the POSIX Spinlock Manager
5 *
6 * This file contains the static inlin implementation of the inlined
7 * routines from the POSIX Spinlock Manager.
8 */
9
10/*
11 *  COPYRIGHT (c) 1989-2011.
12 *  On-Line Applications Research Corporation (OAR).
13 *
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_SPINLOCKIMPL_H
22#define _RTEMS_POSIX_SPINLOCKIMPL_H
23
24#include <pthread.h>
25
26#include <rtems/score/isrlevel.h>
27
28#if defined(RTEMS_SMP)
29#include <rtems/score/percpu.h>
30#include <rtems/score/smplockticket.h>
31#endif
32
33#ifdef __cplusplus
34extern "C" {
35#endif
36
37typedef struct {
38#if defined(RTEMS_SMP)
39  SMP_ticket_lock_Control Lock;
40#else
41  unsigned int reserved[ 2 ];
42#endif
43  ISR_Level interrupt_state;
44} POSIX_Spinlock_Control;
45
46RTEMS_INLINE_ROUTINE POSIX_Spinlock_Control *_POSIX_Spinlock_Get(
47  pthread_spinlock_t *lock
48)
49{
50  return (POSIX_Spinlock_Control *) lock;
51}
52
53#ifdef __cplusplus
54}
55#endif
56
57#endif
58/*  end of include file */
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