source: rtems/c/src/exec/rtems/include/rtems/rtems/clock.h @ 3a4ae6c

4.104.114.84.95
Last change on this file since 3a4ae6c was 3a4ae6c, checked in by Joel Sherrill <joel.sherrill@…>, on 09/11/95 at 19:35:39

The word "RTEMS" almost completely removed from the core.

Configuration Table Template file added and all tests
modified to use this. All gvar.h and conftbl.h files
removed from test directories.

Configuration parameter maximum_devices added.

Core semaphore and mutex handlers added and RTEMS API Semaphore
Manager updated to reflect this.

Initialization sequence changed to invoke API specific initialization
routines. Initialization tasks table now owned by RTEMS Tasks Manager.

Added user extension for post-switch.

Utilized user extensions to implement API specific functionality
like signal dispatching.

Added extensions to the System Initialization Thread so that an
API can register a function to be invoked while the system
is being initialized. These are largely equivalent to the
pre-driver and post-driver hooks.

Added the Modules file oar-go32_p5, modified oar-go32, and modified
the file make/custom/go32.cfg to look at an environment varable which
determines what CPU model is being used.

All BSPs updated to reflect named devices and clock driver's IOCTL
used by the Shared Memory Driver. Also merged clock isr into
main file and removed ckisr.c where possible.

Updated spsize to reflect new and moved variables.

Makefiles for the executive source and include files updated to show
break down of files into Core, RTEMS API, and Neither.

Header and inline files installed into subdirectory based on whether
logically in the Core or a part of the RTEMS API.
  • Property mode set to 100644
File size: 2.2 KB
Line 
1/*  clock.h
2 *
3 *  This include file contains all the constants and structures associated
4 *  with the Clock Manager.  This manager provides facilities to set, obtain,
5 *  and continually update the current date and time.
6 *
7 *  This manager provides directives to:
8 *
9 *     + set the current date and time
10 *     + obtain the current date and time
11 *     + announce a clock tick
12 *
13 *
14 *  COPYRIGHT (c) 1989, 1990, 1991, 1992, 1993, 1994.
15 *  On-Line Applications Research Corporation (OAR).
16 *  All rights assigned to U.S. Government, 1994.
17 *
18 *  This material may be reproduced by or for the U.S. Government pursuant
19 *  to the copyright license under the clause at DFARS 252.227-7013.  This
20 *  notice must appear in all copies of this file and its derivatives.
21 *
22 *  $Id$
23 */
24
25#ifndef __RTEMS_CLOCK_h
26#define __RTEMS_CLOCK_h
27
28#ifdef __cplusplus
29extern "C" {
30#endif
31
32#include <rtems/core/tod.h>
33#include <rtems/rtems/types.h>
34
35/*
36 *  List of things which can be returned by the rtems_clock_get directive.
37 */
38
39typedef enum {
40  RTEMS_CLOCK_GET_TOD,
41  RTEMS_CLOCK_GET_SECONDS_SINCE_EPOCH,
42  RTEMS_CLOCK_GET_TICKS_SINCE_BOOT,
43  RTEMS_CLOCK_GET_TICKS_PER_SECOND,
44  RTEMS_CLOCK_GET_TIME_VALUE
45} rtems_clock_get_options;
46
47/*
48 *  Standard flavor style to return TOD in for a rtems_clock_get option.
49 */
50
51typedef struct {
52  unsigned32  seconds;
53  unsigned32  microseconds;
54} rtems_clock_time_value;
55
56/*
57 *  rtems_clock_get
58 *
59 *  DESCRIPTION:
60 *
61 *  This routine implements the rtems_clock_get directive.  It returns
62 *  one of the following:
63 *    + current time of day
64 *    + seconds since epoch
65 *    + ticks since boot
66 *    + ticks per second
67 */
68
69rtems_status_code rtems_clock_get(
70  rtems_clock_get_options  option,
71  void              *time_buffer
72);
73
74/*
75 *  rtems_clock_set
76 *
77 *  DESCRIPTION:
78 *
79 *  This routine implements the rtems_clock_set directive.  It sets
80 *  the current time of day to that in the time_buffer record.
81 */
82
83rtems_status_code rtems_clock_set(
84  rtems_time_of_day *time_buffer
85);
86
87/*
88 *  rtems_clock_tick
89 *
90 *  DESCRIPTION:
91 *
92 *  This routine implements the rtems_clock_tick directive.  It is invoked
93 *  to inform RTEMS of the occurrence of a clock tick.
94 */
95
96rtems_status_code rtems_clock_tick( void );
97
98#ifdef __cplusplus
99}
100#endif
101
102#endif
103/* end of include file */
Note: See TracBrowser for help on using the repository browser.