source: rtems/cpukit/rtems/src/sem.c @ 6b384516

4.104.114.84.95
Last change on this file since 6b384516 was 6b384516, checked in by Joel Sherrill <joel.sherrill@…>, on 01/10/03 at 15:04:42

2003-01-10 Joel Sherrill <joel@…>

  • src/msg.c, src/part.c, src/sem.c, src/tasks.c: Correct object class control structure initialization for multiprocessing configurations.
  • Property mode set to 100644
File size: 2.4 KB
Line 
1/*
2 *  Semaphore Manager
3 *
4 *  DESCRIPTION:
5 *
6 *  This package is the implementation of the Semaphore Manager.
7 *  This manager utilizes standard Dijkstra counting semaphores to provide
8 *  synchronization and mutual exclusion capabilities.
9 *
10 *  Directives provided are:
11 *
12 *     + create a semaphore
13 *     + get an ID of a semaphore
14 *     + delete a semaphore
15 *     + acquire a semaphore
16 *     + release a semaphore
17 *
18 *  COPYRIGHT (c) 1989-1999.
19 *  On-Line Applications Research Corporation (OAR).
20 *
21 *  The license and distribution terms for this file may be
22 *  found in the file LICENSE in this distribution or at
23 *  http://www.OARcorp.com/rtems/license.html.
24 *
25 *  $Id$
26 */
27
28#include <rtems/system.h>
29#include <rtems/rtems/status.h>
30#include <rtems/rtems/support.h>
31#include <rtems/rtems/attr.h>
32#include <rtems/score/isr.h>
33#include <rtems/score/object.h>
34#include <rtems/rtems/options.h>
35#include <rtems/rtems/sem.h>
36#include <rtems/score/coremutex.h>
37#include <rtems/score/coresem.h>
38#include <rtems/score/states.h>
39#include <rtems/score/thread.h>
40#include <rtems/score/threadq.h>
41#if defined(RTEMS_MULTIPROCESSING)
42#include <rtems/score/mpci.h>
43#endif
44#include <rtems/score/sysstate.h>
45
46#include <rtems/score/interr.h>
47
48/*PAGE
49 *
50 *  _Semaphore_Manager_initialization
51 *
52 *  This routine initializes all semaphore manager related data structures.
53 *
54 *  Input parameters:
55 *    maximum_semaphores - maximum configured semaphores
56 *
57 *  Output parameters:  NONE
58 */
59
60void _Semaphore_Manager_initialization(
61  unsigned32 maximum_semaphores
62)
63{
64  _Objects_Initialize_information(
65    &_Semaphore_Information,     /* object information table */
66    OBJECTS_CLASSIC_API,         /* object API */
67    OBJECTS_RTEMS_SEMAPHORES,    /* object class */
68    maximum_semaphores,          /* maximum objects of this class */
69    sizeof( Semaphore_Control ), /* size of this object's control block */
70    FALSE,                       /* TRUE if the name is a string */
71    RTEMS_MAXIMUM_NAME_LENGTH    /* maximum length of an object name */
72#if defined(RTEMS_MULTIPROCESSING)
73    ,
74    TRUE,                        /* TRUE if this is a global object class */
75    _Semaphore_MP_Send_extract_proxy /* Proxy extraction support callout */
76#endif
77  );
78 
79  /*
80   *  Register the MP Process Packet routine.
81   */
82 
83#if defined(RTEMS_MULTIPROCESSING)
84  _MPCI_Register_packet_processor(
85    MP_PACKET_SEMAPHORE,
86    _Semaphore_MP_Process_packet
87  );
88#endif
89
90}
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