source: rtems/cpukit/include/rtems/posix/timer.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: 1.4 KB
Line 
1/**
2 * @file
3 *
4 * @brief POSIX Timers Internal Support
5 *
6 * This include files defines the internal support for implementation of
7 * POSIX Timers.
8 */
9
10/*
11 *  COPYRIGHT (c) 1989-2011.
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_POSIX_TIMER_H
20#define _RTEMS_POSIX_TIMER_H
21
22#include <rtems/score/object.h>
23#include <rtems/score/watchdog.h>
24
25#include <pthread.h>
26
27#ifdef __cplusplus
28extern "C" {
29#endif
30
31/**
32 * @defgroup POSIX_INTERNAL_TIMERS POSIX Timer Private Support
33 *
34 * @ingroup POSIXAPI
35 */
36/**@{*/
37
38/*
39 * Data for a timer
40 */
41typedef struct {
42  Objects_Control   Object;
43  Watchdog_Control  Timer;      /* Internal Timer                        */
44  pthread_t         thread_id;  /* Thread identifier                     */
45  char              state;      /* State of the timer                    */
46  struct sigevent   inf;        /* Information associated to the timer   */
47  struct itimerspec timer_data; /* Timing data of the timer              */
48  uint32_t          ticks;      /* Number of ticks of the initialization */
49  uint32_t          overrun;    /* Number of expirations of the timer    */
50  struct timespec   time;       /* Time at which the timer was started   */
51} POSIX_Timer_Control;
52
53/** @} */
54
55#ifdef __cplusplus
56}
57#endif
58
59#endif
60/* end of include file */
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