source: rtems/cpukit/score/src/threadready.c @ a6eef8b

Last change on this file since a6eef8b was a6eef8b, checked in by Joel Sherrill <joel.sherrill@…>, on 09/04/03 at 18:52:48

2003-09-04 Joel Sherrill <joel@…>

  • apiext.c, chain.c, coremsg.c, coremsgbroadcast.c, coremsgclose.c, coremsgflush.c, coremsgflushsupp.c, coremsgflushwait.c, coremsginsert.c, coremsgseize.c, coremsgsubmit.c, coremutex.c, coremutexflush.c, coremutexseize.c, coremutexsurrender.c, coresem.c, coresemflush.c, coresemseize.c, coresemsurrender.c, coretod.c, coretodset.c, coretodtickle.c, coretodtoseconds.c, coretodvalidate.c, heap.c, heapallocate.c, heapextend.c, heapfree.c, heapgetinfo.c, heapsizeofuserarea.c, heapwalk.c, interr.c, isr.c, mpci.c, object.c, objectallocate.c, objectallocatebyindex.c, objectclearname.c, objectcomparenameraw.c, objectcomparenamestring.c, objectcopynameraw.c, objectcopynamestring.c, objectextendinformation.c, objectfree.c, objectget.c, objectgetbyindex.c, objectgetisr.c, objectgetnext.c, objectgetnoprotection.c, objectinitializeinformation.c, objectmp.c, objectnametoid.c, objectshrinkinformation.c, thread.c, threadchangepriority.c, threadclearstate.c, threadclose.c, threadcreateidle.c, threaddelayended.c, threaddispatch.c, threadevaluatemode.c, threadget.c, threadhandler.c, threadidlebody.c, threadinitialize.c, threadloadenv.c, threadmp.c, threadq.c, threadqdequeue.c, threadqdequeuefifo.c, threadqdequeuepriority.c, threadqenqueue.c, threadqenqueuefifo.c, threadqenqueuepriority.c, threadqextract.c, threadqextractfifo.c, threadqextractpriority.c, threadqextractwithproxy.c, threadqfirst.c, threadqfirstfifo.c, threadqfirstpriority.c, threadqflush.c, threadqtimeout.c, threadready.c, threadreset.c, threadresettimeslice.c, threadrestart.c, threadresume.c, threadrotatequeue.c, threadsetpriority.c, threadsetstate.c, threadsettransient.c, threadstackallocate.c, threadstackfree.c, threadstart.c, threadstartmultitasking.c, threadsuspend.c, threadtickletimeslice.c, threadyieldprocessor.c, userext.c, watchdog.c, watchdogadjust.c, watchdoginsert.c, watchdogremove.c, watchdogtickle.c, wkspace.c: URL for license changed.
  • Property mode set to 100644
File size: 1.7 KB
Line 
1/*
2 *  Thread 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 found in the file LICENSE in this distribution or at
10 *  http://www.rtems.com/license/LICENSE.
11 *
12 *  $Id$
13 */
14
15#include <rtems/system.h>
16#include <rtems/score/apiext.h>
17#include <rtems/score/context.h>
18#include <rtems/score/interr.h>
19#include <rtems/score/isr.h>
20#include <rtems/score/object.h>
21#include <rtems/score/priority.h>
22#include <rtems/score/states.h>
23#include <rtems/score/sysstate.h>
24#include <rtems/score/thread.h>
25#include <rtems/score/threadq.h>
26#include <rtems/score/userext.h>
27#include <rtems/score/wkspace.h>
28
29/*PAGE
30 *
31 *  _Thread_Ready
32 *
33 *  This kernel routine readies the requested thread, the thread chain
34 *  is adjusted.  A new heir thread may be selected.
35 *
36 *  Input parameters:
37 *    the_thread - pointer to thread control block
38 *
39 *  Output parameters:  NONE
40 *
41 *  NOTE:  This routine uses the "blocking" heir selection mechanism.
42 *         This insures the correct heir after a thread restart.
43 *
44 *  INTERRUPT LATENCY:
45 *    ready chain
46 *    select heir
47 */
48
49void _Thread_Ready(
50  Thread_Control *the_thread
51)
52{
53  ISR_Level              level;
54  Thread_Control *heir;
55
56  _ISR_Disable( level );
57
58  the_thread->current_state = STATES_READY;
59
60  _Priority_Add_to_bit_map( &the_thread->Priority_map );
61
62  _Chain_Append_unprotected( the_thread->ready, &the_thread->Object.Node );
63
64  _ISR_Flash( level );
65
66  _Thread_Calculate_heir();
67
68  heir = _Thread_Heir;
69
70  if ( !_Thread_Is_executing( heir ) && _Thread_Executing->is_preemptible )
71    _Context_Switch_necessary = TRUE;
72
73  _ISR_Enable( level );
74}
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