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comparison src/nucleus/pmf.c @ 0:4e78acac3d88

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src/{condat,cs,gpf,nucleus}: import from Selenite
author Mychaela Falconia <falcon@freecalypso.org>
date Fri, 16 Oct 2020 06:23:26 +0000
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-1:000000000000 0:4e78acac3d88
1 /*************************************************************************/
2 /* */
3 /* Copyright Mentor Graphics Corporation 2002 */
4 /* All Rights Reserved. */
5 /* */
6 /* THIS WORK CONTAINS TRADE SECRET AND PROPRIETARY INFORMATION WHICH IS */
7 /* THE PROPERTY OF MENTOR GRAPHICS CORPORATION OR ITS LICENSORS AND IS */
8 /* SUBJECT TO LICENSE TERMS. */
9 /* */
10 /*************************************************************************/
11
12 /*************************************************************************/
13 /* */
14 /* FILE NAME VERSION */
15 /* */
16 /* pmf.c Nucleus PLUS 1.14 */
17 /* */
18 /* COMPONENT */
19 /* */
20 /* PM - Partition Memory Management */
21 /* */
22 /* DESCRIPTION */
23 /* */
24 /* This file contains routines to obtain facts about the Partition */
25 /* Memory Management component. */
26 /* */
27 /* DATA STRUCTURES */
28 /* */
29 /* None */
30 /* */
31 /* FUNCTIONS */
32 /* */
33 /* PMF_Established_Partition_Pools Number of partition pools */
34 /* PMF_Partition_Pool_Pointers Build partition pool pointer */
35 /* list */
36 /* PMF_Partition_Pool_Information Retrieve partition pool info */
37 /* */
38 /* DEPENDENCIES */
39 /* */
40 /* cs_extr.h Common Service functions */
41 /* tc_extr.h Thread Control functions */
42 /* pm_extr.h Partition functions */
43 /* hi_extr.h History functions */
44 /* */
45 /* HISTORY */
46 /* */
47 /* DATE REMARKS */
48 /* */
49 /* 03-01-1994 Initial version of partition fact */
50 /* service file, version 1.1 */
51 /* */
52 /* 03-18-1994 Verified version 1.1 */
53 /* 04-17-1996 updated to version 1.2 */
54 /* 11-18-1996 Protected Informational service */
55 /* from NULL Control Block pointers */
56 /* creating 1.2a. (SPR220) */
57 /* 03-24-1998 Released version 1.3. */
58 /* 03-26-1999 Released 1.11m (new release */
59 /* numbering scheme) */
60 /* 04-17-2002 Released version 1.13m */
61 /* 11-07-2002 Released version 1.14 */
62 /*************************************************************************/
63 #define NU_SOURCE_FILE
64
65
66 #include "cs_extr.h" /* Common service functions */
67 #include "tc_extr.h" /* Thread control functions */
68 #include "pm_extr.h" /* Partition functions */
69 #include "hi_extr.h" /* History functions */
70
71
72 /* Define external inner-component global data references. */
73
74 extern CS_NODE *PMD_Created_Pools_List;
75 extern UNSIGNED PMD_Total_Pools;
76 extern TC_PROTECT PMD_List_Protect;
77
78
79
80 /*************************************************************************/
81 /* */
82 /* FUNCTION */
83 /* */
84 /* PMF_Established_Partition_Pools */
85 /* */
86 /* DESCRIPTION */
87 /* */
88 /* This function returns the current number of established */
89 /* partition pools. Pools previously deleted are no longer */
90 /* considered established. */
91 /* */
92 /* CALLED BY */
93 /* */
94 /* Application */
95 /* */
96 /* CALLS */
97 /* */
98 /* [TCT_Check_Stack] Stack checking function */
99 /* */
100 /* INPUTS */
101 /* */
102 /* None */
103 /* */
104 /* OUTPUTS */
105 /* */
106 /* PMD_Total_Pools Number of established */
107 /* partition pools */
108 /* */
109 /* HISTORY */
110 /* */
111 /* DATE REMARKS */
112 /* */
113 /* 03-01-1993 Created initial version 1.0 */
114 /* 04-19-1993 Verified version 1.0 */
115 /* 03-01-1994 Modified function interface, */
116 /* resulting in version 1.1 */
117 /* */
118 /* 03-18-1994 Verified version 1.1 */
119 /* */
120 /*************************************************************************/
121 UNSIGNED PMF_Established_Partition_Pools(VOID)
122 {
123
124
125 #ifdef NU_ENABLE_STACK_CHECK
126
127 /* Call stack checking function to check for an overflow condition. */
128 TCT_Check_Stack();
129
130 #endif
131
132 /* Return the number of established partition pools. */
133 return(PMD_Total_Pools);
134 }
135
136
137 /*************************************************************************/
138 /* */
139 /* FUNCTION */
140 /* */
141 /* PMF_Partition_Pool_Pointers */
142 /* */
143 /* DESCRIPTION */
144 /* */
145 /* This function builds a list of pool pointers, starting at */
146 /* the specified location. The number of pool pointers */
147 /* placed in the list is equivalent to the total number of */
148 /* pools or the maximum number of pointers specified in the */
149 /* call. */
150 /* */
151 /* CALLED BY */
152 /* */
153 /* Application */
154 /* */
155 /* CALLS */
156 /* */
157 /* [TCT_Check_Stack] Stack checking function */
158 /* TCT_Protect Protect created list */
159 /* TCT_Unprotect Release protection */
160 /* */
161 /* INPUTS */
162 /* */
163 /* pointer_list Pointer to the list area */
164 /* maximum_pointers Maximum number of pointers */
165 /* */
166 /* OUTPUTS */
167 /* */
168 /* pointers Number of partition pools */
169 /* placed in the list */
170 /* HISTORY */
171 /* */
172 /* DATE REMARKS */
173 /* */
174 /* 03-01-1993 Created initial version 1.0 */
175 /* 04-19-1993 Verified version 1.0 */
176 /* 08-09-1993 Corrected pointer retrieval */
177 /* loop, resulting in version 1.0a */
178 /* 08-09-1993 Verified version 1.0a */
179 /* 03-01-1994 Modified function interface, */
180 /* resulting in version 1.1 */
181 /* */
182 /* 03-18-1994 Verified version 1.1 */
183 /* */
184 /*************************************************************************/
185 UNSIGNED PMF_Partition_Pool_Pointers(NU_PARTITION_POOL **pointer_list,
186 UNSIGNED maximum_pointers)
187 {
188 CS_NODE *node_ptr; /* Pointer to each PCB */
189 UNSIGNED pointers; /* Number of pointers in list*/
190 NU_SUPERV_USER_VARIABLES
191
192 /* Switch to supervisor mode */
193 NU_SUPERVISOR_MODE();
194
195 #ifdef NU_ENABLE_STACK_CHECK
196
197 /* Call stack checking function to check for an overflow condition. */
198 TCT_Check_Stack();
199
200 #endif
201
202 /* Initialize the number of pointers returned. */
203 pointers = 0;
204
205 /* Protect against access to the list of created partition pools. */
206 TCT_Protect(&PMD_List_Protect);
207
208 /* Loop until all pool pointers are in the list or until the maximum
209 list size is reached. */
210 node_ptr = PMD_Created_Pools_List;
211 while ((node_ptr) && (pointers < maximum_pointers))
212 {
213
214 /* Place the node into the destination list. */
215 *pointer_list++ = (NU_PARTITION_POOL *) node_ptr;
216
217 /* Increment the pointers variable. */
218 pointers++;
219
220 /* Position the node pointer to the next node. */
221 node_ptr = node_ptr -> cs_next;
222
223 /* Determine if the pointer is at the head of the list. */
224 if (node_ptr == PMD_Created_Pools_List)
225
226 /* The list search is complete. */
227 node_ptr = NU_NULL;
228 }
229
230 /* Release protection against access to the list of created pools. */
231 TCT_Unprotect();
232
233 /* Return to user mode */
234 NU_USER_MODE();
235
236 /* Return the number of pointers in the list. */
237 return(pointers);
238 }
239
240
241 /*************************************************************************/
242 /* */
243 /* FUNCTION */
244 /* */
245 /* PMF_Partition_Pool_Information */
246 /* */
247 /* DESCRIPTION */
248 /* */
249 /* This function returns information about the specified partition */
250 /* pool. However, if the supplied partition pool pointer is */
251 /* invalid, the function simply returns an error status. */
252 /* */
253 /* CALLED BY */
254 /* */
255 /* Application */
256 /* */
257 /* CALLS */
258 /* */
259 /* [TCT_Check_Stack] Stack checking function */
260 /* TCT_System_Protect Protect partition pool */
261 /* TCT_Unprotect Release protection */
262 /* */
263 /* INPUTS */
264 /* */
265 /* pool_ptr Pointer to the partition pool*/
266 /* name Destination for the name */
267 /* start_address Destination for the starting */
268 /* memory address of the pool */
269 /* pool_size Destination for the pool's */
270 /* total size */
271 /* partition_size Destination for the size of */
272 /* each partition */
273 /* available Destination for the available*/
274 /* number of partitions */
275 /* allocated Destination for the number */
276 /* of allocated partitions */
277 /* suspend_type Destination for the type of */
278 /* suspension */
279 /* tasks_waiting Destination for the tasks */
280 /* waiting count */
281 /* first_task Destination for the pointer */
282 /* to the first task waiting */
283 /* */
284 /* OUTPUTS */
285 /* */
286 /* NU_SUCCESS If a valid pool pointer */
287 /* is supplied */
288 /* NU_INVALID_POOL If pool pointer invalid */
289 /* */
290 /* HISTORY */
291 /* */
292 /* DATE REMARKS */
293 /* */
294 /* 03-01-1993 Created initial version 1.0 */
295 /* 04-19-1993 Verified version 1.0 */
296 /* 03-01-1994 Modified function interface, */
297 /* resulting in version 1.1 */
298 /* */
299 /* 03-18-1994 Verified version 1.1 */
300 /* 11-18-1996 Corrected SPR220. */
301 /* */
302 /*************************************************************************/
303 STATUS PMF_Partition_Pool_Information(NU_PARTITION_POOL *pool_ptr, CHAR *name,
304 VOID **start_address, UNSIGNED *pool_size,
305 UNSIGNED *partition_size, UNSIGNED *available,
306 UNSIGNED *allocated, OPTION *suspend_type,
307 UNSIGNED *tasks_waiting, NU_TASK **first_task)
308 {
309
310 PM_PCB *pool; /* Pool control block ptr */
311 INT i; /* Working integer variable */
312 STATUS completion; /* Completion status */
313 NU_SUPERV_USER_VARIABLES
314
315 /* Switch to superisor mode */
316 NU_SUPERVISOR_MODE();
317
318 /* Move input pool pointer into internal pointer. */
319 pool = (PM_PCB *) pool_ptr;
320
321
322 #ifdef NU_ENABLE_STACK_CHECK
323
324 /* Call stack checking function to check for an overflow condition. */
325 TCT_Check_Stack();
326
327 #endif
328
329 /* Determine if this partition pool id is valid. */
330 if ((pool != NU_NULL) && (pool -> pm_id == PM_PARTITION_ID))
331 {
332
333 /* Setup protection of the partition pool. */
334 TCT_System_Protect();
335
336 /* The partition pool pointer is valid. Reflect this in the completion
337 status and fill in the actual information. */
338 completion = NU_SUCCESS;
339
340 /* Copy the partition pool's name. */
341 for (i = 0; i < NU_MAX_NAME; i++)
342 *name++ = pool -> pm_name[i];
343
344 /* Determine the suspension type. */
345 if (pool -> pm_fifo_suspend)
346 *suspend_type = NU_FIFO;
347 else
348 *suspend_type = NU_PRIORITY;
349
350 /* Retrieve information directly out of the control structure. */
351 *start_address = pool -> pm_start_address;
352 *pool_size = pool -> pm_pool_size;
353 *partition_size = pool -> pm_partition_size;
354 *available = pool -> pm_available;
355 *allocated = pool -> pm_allocated;
356
357 /* Retrieve the number of tasks waiting and the pointer to the
358 first task waiting. */
359 *tasks_waiting = pool -> pm_tasks_waiting;
360 if (pool -> pm_suspension_list)
361
362 /* There is a task waiting. */
363 *first_task = (NU_TASK *)
364 (pool -> pm_suspension_list) -> pm_suspended_task;
365 else
366
367 /* There are no tasks waiting. */
368 *first_task = NU_NULL;
369
370 /* Release protection of the partition pool. */
371 TCT_Unprotect();
372 }
373 else
374
375 /* Indicate that the partition pool pointer is invalid. */
376 completion = NU_INVALID_POOL;
377
378 /* Return to user mode */
379 NU_USER_MODE();
380
381 /* Return the appropriate completion status. */
382 return(completion);
383 }
384
385
386
387