source: rtems/cpukit/score/src/threadq.c @ 2728d9cf

4.104.114.84.95
Last change on this file since 2728d9cf was ef9505a9, checked in by Joel Sherrill <joel.sherrill@…>, on 07/01/02 at 22:30:12

2002-07-01 Joel Sherrill <joel@…>

  • Mega patch merge to change the format of the object IDs to loosen the dependency between the SCORE and the various APIs. There was considerable work to simplify the object name management and it appears that the name_table field is no longer needed. This patch also includes the addition of the internal mutex which is currently only used to protect some types of allocation and deallocation. This significantly can reduce context switch latency under certain circumstances. In particular, some heap/region operations were O(n) and had dispatching disabled. This should help enormously. With this merge, the patch is not as clean as it should be. In particular, the documentation has not been modified to reflect the new object ID layout, the IDs in the test screens are not updated, and _Objects_Get_information needs to be a real routine not inlined. As part of this patch a lot of MP code for thread/proxy blocking was made conditional and cleaned up.
  • include/Makefile.am, include/rtems/score/coremsg.h, include/rtems/score/coremutex.h, include/rtems/score/coresem.h, include/rtems/score/object.h, include/rtems/score/threadq.h, inline/rtems/score/object.inl, inline/rtems/score/thread.inl, macros/rtems/score/object.inl, src/Makefile.am, src/coremsg.c, src/coremutex.c, src/coresem.c, src/mpci.c, src/objectcomparenameraw.c, src/objectextendinformation.c, src/objectinitializeinformation.c, src/objectnametoid.c, src/thread.c, src/threadclose.c, src/threadget.c, src/threadq.c, src/threadqextractwithproxy.c: Modified as part of above.
  • include/rtems/score/apimutex.h, src/objectgetnoprotection.c: New files.
  • Property mode set to 100644
File size: 1.7 KB
Line 
1/*
2 *  Thread Queue Handler
3 *
4 *
5 *  COPYRIGHT (c) 1989-1999.
6 *  On-Line Applications Research Corporation (OAR).
7 *
8 *  The license and distribution terms for this file may be
9 *  found in the file LICENSE in this distribution or at
10 *  http://www.OARcorp.com/rtems/license.html.
11 *
12 *  $Id$
13 */
14
15#include <rtems/system.h>
16#include <rtems/score/chain.h>
17#include <rtems/score/isr.h>
18#include <rtems/score/object.h>
19#include <rtems/score/states.h>
20#include <rtems/score/thread.h>
21#include <rtems/score/threadq.h>
22#include <rtems/score/tqdata.h>
23
24/*PAGE
25 *
26 *  _Thread_queue_Initialize
27 *
28 *  This routine initializes the specified threadq.
29 *
30 *  Input parameters:
31 *    the_thread_queue      - pointer to a threadq header
32 *    discipline            - queueing discipline
33 *    state                 - state of waiting threads
34 *    timeout_status        - return on a timeout
35 *
36 *  Output parameters: NONE
37 */
38
39void _Thread_queue_Initialize(
40  Thread_queue_Control         *the_thread_queue,
41  Thread_queue_Disciplines      the_discipline,
42  States_Control                state,
43  unsigned32                    timeout_status
44)
45{
46  unsigned32 index;
47
48  the_thread_queue->state          = state;
49  the_thread_queue->discipline     = the_discipline;
50  the_thread_queue->timeout_status = timeout_status;
51  the_thread_queue->sync_state     = THREAD_QUEUE_SYNCHRONIZED;
52
53  switch ( the_discipline ) {
54    case THREAD_QUEUE_DISCIPLINE_FIFO:
55      _Chain_Initialize_empty( &the_thread_queue->Queues.Fifo );
56      break;
57    case THREAD_QUEUE_DISCIPLINE_PRIORITY:
58      for( index=0 ;
59           index < TASK_QUEUE_DATA_NUMBER_OF_PRIORITY_HEADERS ;
60           index++)
61        _Chain_Initialize_empty( &the_thread_queue->Queues.Priority[index] );
62      break;
63  }
64
65}
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