source: rtems/cpukit/score/inline/rtems/score/priority.inl @ 7f6a24ab

4.104.114.84.95
Last change on this file since 7f6a24ab was 7f6a24ab, checked in by Joel Sherrill <joel.sherrill@…>, on 08/28/95 at 15:30:29

Added unused priority ceiling parameter to rtems_semaphore_create.

Rearranged code to created thread handler routines to initialize,
start, restart, and "close/delete" a thread.

Made internal threads their own object class. This now uses the
thread support routines for starting and initializing a thread.

Insured deleted tasks are freed to the Inactive pool associated with the
correct Information block.

Added an RTEMS API specific data area to the thread control block.

Beginnings of removing the word "rtems" from the core.
  • Property mode set to 100644
File size: 3.2 KB
Line 
1/*  priority.inl
2 *
3 *  This file contains the static inline implementation of all inlined
4 *  routines in the Priority Handler.
5 *
6 *  COPYRIGHT (c) 1989, 1990, 1991, 1992, 1993, 1994.
7 *  On-Line Applications Research Corporation (OAR).
8 *  All rights assigned to U.S. Government, 1994.
9 *
10 *  This material may be reproduced by or for the U.S. Government pursuant
11 *  to the copyright license under the clause at DFARS 252.227-7013.  This
12 *  notice must appear in all copies of this file and its derivatives.
13 *
14 *  $Id$
15 */
16
17#ifndef __PRIORITY_inl
18#define __PRIORITY_inl
19
20#include <rtems/bitfield.h>
21
22/*PAGE
23 *
24 *  _Priority_Handler_initialization
25 *
26 */
27
28STATIC INLINE void _Priority_Handler_initialization( void )
29{
30  unsigned32 index;
31
32  _Priority_Major_bit_map = 0;
33  for ( index=0 ; index <16 ; index++ )
34     _Priority_Bit_map[ index ] = 0;
35}
36
37/*PAGE
38 *
39 *  _Priority_Is_valid
40 *
41 */
42
43STATIC INLINE boolean _Priority_Is_valid (
44  Priority_Control the_priority
45)
46{
47  return (  ( the_priority >= RTEMS_MINIMUM_PRIORITY ) &&
48            ( the_priority <= RTEMS_MAXIMUM_PRIORITY ) );
49}
50
51/*PAGE
52 *
53 *  _Priority_Major
54 *
55 */
56
57STATIC INLINE unsigned32 _Priority_Major (
58  Priority_Control the_priority
59)
60{
61  return ( the_priority / 16 );
62}
63
64/*PAGE
65 *
66 *  _Priority_Minor
67 *
68 */
69
70STATIC INLINE unsigned32 _Priority_Minor (
71  Priority_Control the_priority
72)
73{
74  return ( the_priority % 16 );
75}
76
77/*PAGE
78 *
79 *  _Priority_Add_to_bit_map
80 *
81 */
82
83STATIC INLINE void _Priority_Add_to_bit_map (
84  Priority_Information *the_priority_map
85)
86{
87  *the_priority_map->minor |= the_priority_map->ready_minor;
88  _Priority_Major_bit_map  |= the_priority_map->ready_major;
89}
90
91/*PAGE
92 *
93 *  _Priority_Remove_from_bit_map
94 *
95 */
96
97STATIC INLINE void _Priority_Remove_from_bit_map (
98  Priority_Information *the_priority_map
99)
100{
101  *the_priority_map->minor &= the_priority_map->block_minor;
102  if ( *the_priority_map->minor == 0 )
103    _Priority_Major_bit_map &= the_priority_map->block_major;
104}
105
106/*PAGE
107 *
108 *  _Priority_Get_highest
109 *
110 */
111
112STATIC INLINE Priority_Control _Priority_Get_highest( void )
113{
114  Priority_Bit_map_control minor;
115  Priority_Bit_map_control major;
116
117  _Bitfield_Find_first_bit( _Priority_Major_bit_map, major );
118  _Bitfield_Find_first_bit( _Priority_Bit_map[major], minor );
119
120  return (_CPU_Priority_Bits_index( major ) << 4) +
121          _CPU_Priority_Bits_index( minor );
122}
123
124/*PAGE
125 *
126 *  _Priority_Initialize_information
127 *
128 */
129
130STATIC INLINE void _Priority_Initialize_information(
131  Priority_Information *the_priority_map,
132  Priority_Control      new_priority
133)
134{
135  Priority_Bit_map_control major;
136  Priority_Bit_map_control minor;
137  Priority_Bit_map_control mask;
138
139  major = _Priority_Major( new_priority );
140  minor = _Priority_Minor( new_priority );
141
142  the_priority_map->minor =
143    &_Priority_Bit_map[ _CPU_Priority_Bits_index(major) ];
144
145  mask = _CPU_Priority_Mask( major );
146  the_priority_map->ready_major = mask;
147  the_priority_map->block_major = ~mask;
148
149  mask = _CPU_Priority_Mask( minor );
150  the_priority_map->ready_minor = mask;
151  the_priority_map->block_minor = ~mask;
152}
153
154/*PAGE
155 *
156 *  _Priority_Is_group_empty
157 *
158 */
159
160STATIC INLINE boolean _Priority_Is_group_empty (
161  Priority_Control      the_priority
162)
163{
164  return the_priority == 0;
165}
166
167#endif
168/* end of include file */
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