summaryrefslogtreecommitdiffstats
path: root/c/src/exec/score/inline/thread.inl
blob: 3a96acf4eaf38ff0e14924111ad602fc5d7790b7 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
/*  thread.inl
 *
 *  This file contains the macro implementation of the inlined
 *  routines from the Thread handler.
 *
 *  COPYRIGHT (c) 1989, 1990, 1991, 1992, 1993, 1994.
 *  On-Line Applications Research Corporation (OAR).
 *  All rights assigned to U.S. Government, 1994.
 *
 *  This material may be reproduced by or for the U.S. Government pursuant
 *  to the copyright license under the clause at DFARS 252.227-7013.  This
 *  notice must appear in all copies of this file and its derivatives.
 *
 *  $Id$
 */

#ifndef __THREAD_inl
#define __THREAD_inl

/*PAGE
 *
 *  _Thread_Stop_multitasking
 *
 */

STATIC INLINE void _Thread_Stop_multitasking( void )
{
  _Context_Switch( &_Thread_Executing->Registers, &_Thread_BSP_context );
}

/*PAGE
 *
 *  _Thread_Is_executing
 *
 */

STATIC INLINE boolean _Thread_Is_executing (
  Thread_Control *the_thread
)
{
  return ( the_thread == _Thread_Executing );
}

/*PAGE
 *
 *  _Thread_Is_heir
 *
 */

STATIC INLINE boolean _Thread_Is_heir (
  Thread_Control *the_thread
)
{
  return ( the_thread == _Thread_Heir );
}

/*PAGE
 *
 *  _Thread_Is_executing_also_the_heir
 *
 */

STATIC INLINE boolean _Thread_Is_executing_also_the_heir( void )
{
  return ( _Thread_Executing == _Thread_Heir );
}

/*PAGE
 *
 *  _Thread_Resume
 *
 */

STATIC INLINE void _Thread_Resume (
  Thread_Control *the_thread
)
{
  _Thread_Clear_state( the_thread, STATES_SUSPENDED );
}

/*PAGE
 *
 *  _Thread_Unblock
 *
 */

STATIC INLINE void _Thread_Unblock (
  Thread_Control *the_thread
)
{
  _Thread_Clear_state( the_thread, STATES_BLOCKED );
}

/*PAGE
 *
 *  _Thread_Restart_self
 *
 */

STATIC INLINE void _Thread_Restart_self( void )
{
  if ( _Thread_Executing->fp_context != NULL )
    _Context_Restore_fp( &_Thread_Executing->fp_context );

  _CPU_Context_Restart_self( &_Thread_Executing->Registers );
}

/*PAGE
 *
 *  _Thread_Calculate_heir
 *
 */

STATIC INLINE void _Thread_Calculate_heir( void )
{
  _Thread_Heir = (Thread_Control *)
    _Thread_Ready_chain[ _Priority_Get_highest() ].first;
}

/*PAGE
 *
 *  _Thread_Is_allocated_fp
 *
 */

STATIC INLINE boolean _Thread_Is_allocated_fp (
  Thread_Control *the_thread
)
{
  return ( the_thread == _Thread_Allocated_fp );
}

/*PAGE
 *
 *  _Thread_Deallocate_fp
 *
 */

STATIC INLINE void _Thread_Deallocate_fp( void )
{
  _Thread_Allocated_fp = NULL;
}

/*PAGE
 *
 *  _Thread_Disable_dispatch
 *
 */

STATIC INLINE void _Thread_Disable_dispatch( void )
{
  _Thread_Dispatch_disable_level += 1;
}

/*PAGE
 *
 *  _Thread_Enable_dispatch
 *
 */

#if ( CPU_INLINE_ENABLE_DISPATCH == TRUE )
STATIC INLINE void _Thread_Enable_dispatch()
{
  if ( (--_Thread_Dispatch_disable_level) == 0 )
    _Thread_Dispatch();
}
#endif

#if ( CPU_INLINE_ENABLE_DISPATCH == FALSE )
void _Thread_Enable_dispatch( void );
#endif

/*PAGE
 *
 *  _Thread_Unnest_dispatch
 *
 */

STATIC INLINE void _Thread_Unnest_dispatch( void )
{
  _Thread_Dispatch_disable_level -= 1;
}

/*PAGE
 *
 *  _Thread_Is_dispatching_enabled
 *
 */

STATIC INLINE boolean _Thread_Is_dispatching_enabled( void )
{
  return ( _Thread_Dispatch_disable_level == 0 );
}

/*PAGE
 *
 *  _Thread_Is_context_switch_necessary
 *
 */

STATIC INLINE boolean _Thread_Is_context_switch_necessary( void )
{
  return ( _Context_Switch_necessary );
}

/*PAGE
 *
 *  _Thread_Dispatch_initialization
 *
 */

STATIC INLINE void _Thread_Dispatch_initialization( void )
{
  _Thread_Dispatch_disable_level = 1;
}

/*PAGE
 *
 *  _Thread_Is_null
 *
 */

STATIC INLINE boolean _Thread_Is_null (
  Thread_Control *the_thread
)
{
  return ( the_thread == NULL );
}

/*PAGE
 *
 *  _Thread_Get
 *
 *  NOTE:  XXX... This routine may be able to be optimized.
 */

STATIC INLINE Thread_Control *_Thread_Get (
  Objects_Id         id,
  Objects_Locations *location
)
{
  Objects_Classes      the_class;
  Objects_Information *information;
  Thread_Control      *tp = (Thread_Control *) 0;
 
  if ( _Objects_Are_ids_equal( id, OBJECTS_ID_OF_SELF ) ) {
    _Thread_Disable_dispatch();
    *location = OBJECTS_LOCAL;
    tp = _Thread_Executing;
    goto done;
  }
 
  the_class = _Objects_Get_class( id );
 
  if ( the_class > OBJECTS_CLASSES_LAST ) {
    *location = OBJECTS_ERROR;
    goto done;
  }
 
  information = _Objects_Information_table[ the_class ];
 
  if ( !information || !information->is_thread ) {
    *location = OBJECTS_ERROR;
    goto done;
  }
 
  tp = (Thread_Control *) _Objects_Get( information, id, location );
 
done:
  return tp;
}


/*
 *  _Thread_Is_proxy_blocking
 *
 */

STATIC INLINE boolean _Thread_Is_proxy_blocking (
  unsigned32 code
)
{
  return (code == THREAD_STATUS_PROXY_BLOCKING);
}

#endif
/* end of include file */