1 /******************************************************************************
2 *
3 * Module Name: uttrack - Memory allocation tracking routines (debug only)
4 *
5 *****************************************************************************/
6
7 /*
8 * Copyright (C) 2000 - 2011, Intel Corp.
9 * All rights reserved.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions, and the following disclaimer,
16 * without modification.
17 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
18 * substantially similar to the "NO WARRANTY" disclaimer below
19 * ("Disclaimer") and any redistribution must be conditioned upon
20 * including a substantially similar Disclaimer requirement for further
21 * binary redistribution.
22 * 3. Neither the names of the above-listed copyright holders nor the names
23 * of any contributors may be used to endorse or promote products derived
24 * from this software without specific prior written permission.
25 *
26 * Alternatively, this software may be distributed under the terms of the
27 * GNU General Public License ("GPL") version 2 as published by the Free
28 * Software Foundation.
45 * These procedures are used for tracking memory leaks in the subsystem, and
46 * they get compiled out when the ACPI_DBG_TRACK_ALLOCATIONS is not set.
47 *
48 * Each memory allocation is tracked via a doubly linked list. Each
49 * element contains the caller's component, module name, function name, and
50 * line number. AcpiUtAllocate and AcpiUtAllocateZeroed call
51 * AcpiUtTrackAllocation to add an element to the list; deletion
52 * occurs in the body of AcpiUtFree.
53 */
54
55 #define __UTTRACK_C__
56
57 #include "acpi.h"
58 #include "accommon.h"
59
60 #ifdef ACPI_DBG_TRACK_ALLOCATIONS
61
62 #define _COMPONENT ACPI_UTILITIES
63 ACPI_MODULE_NAME ("uttrack")
64
65 /* Local prototypes */
66
67 static ACPI_DEBUG_MEM_BLOCK *
68 AcpiUtFindAllocation (
69 void *Allocation);
70
71 static ACPI_STATUS
72 AcpiUtTrackAllocation (
73 ACPI_DEBUG_MEM_BLOCK *Address,
74 ACPI_SIZE Size,
75 UINT8 AllocType,
76 UINT32 Component,
77 const char *Module,
78 UINT32 Line);
79
80 static ACPI_STATUS
81 AcpiUtRemoveAllocation (
82 ACPI_DEBUG_MEM_BLOCK *Address,
83 UINT32 Component,
84 const char *Module,
85 UINT32 Line);
86
87
88 /*******************************************************************************
89 *
133 * Module - Source file name of caller
134 * Line - Line number of caller
135 *
136 * RETURN: Address of the allocated memory on success, NULL on failure.
137 *
138 * DESCRIPTION: The subsystem's equivalent of malloc.
139 *
140 ******************************************************************************/
141
142 void *
143 AcpiUtAllocateAndTrack (
144 ACPI_SIZE Size,
145 UINT32 Component,
146 const char *Module,
147 UINT32 Line)
148 {
149 ACPI_DEBUG_MEM_BLOCK *Allocation;
150 ACPI_STATUS Status;
151
152
153 Allocation = AcpiUtAllocate (Size + sizeof (ACPI_DEBUG_MEM_HEADER),
154 Component, Module, Line);
155 if (!Allocation)
156 {
157 return (NULL);
158 }
159
160 Status = AcpiUtTrackAllocation (Allocation, Size,
161 ACPI_MEM_MALLOC, Component, Module, Line);
162 if (ACPI_FAILURE (Status))
163 {
164 AcpiOsFree (Allocation);
165 return (NULL);
166 }
167
168 AcpiGbl_GlobalList->TotalAllocated++;
169 AcpiGbl_GlobalList->TotalSize += (UINT32) Size;
170 AcpiGbl_GlobalList->CurrentTotalSize += (UINT32) Size;
171 if (AcpiGbl_GlobalList->CurrentTotalSize > AcpiGbl_GlobalList->MaxOccupied)
172 {
173 AcpiGbl_GlobalList->MaxOccupied = AcpiGbl_GlobalList->CurrentTotalSize;
174 }
175
176 return ((void *) &Allocation->UserSpace);
186 * Module - Source file name of caller
187 * Line - Line number of caller
188 *
189 * RETURN: Address of the allocated memory on success, NULL on failure.
190 *
191 * DESCRIPTION: Subsystem equivalent of calloc.
192 *
193 ******************************************************************************/
194
195 void *
196 AcpiUtAllocateZeroedAndTrack (
197 ACPI_SIZE Size,
198 UINT32 Component,
199 const char *Module,
200 UINT32 Line)
201 {
202 ACPI_DEBUG_MEM_BLOCK *Allocation;
203 ACPI_STATUS Status;
204
205
206 Allocation = AcpiUtAllocateZeroed (Size + sizeof (ACPI_DEBUG_MEM_HEADER),
207 Component, Module, Line);
208 if (!Allocation)
209 {
210 /* Report allocation error */
211
212 ACPI_ERROR ((Module, Line,
213 "Could not allocate size %u", (UINT32) Size));
214 return (NULL);
215 }
216
217 Status = AcpiUtTrackAllocation (Allocation, Size,
218 ACPI_MEM_CALLOC, Component, Module, Line);
219 if (ACPI_FAILURE (Status))
220 {
221 AcpiOsFree (Allocation);
222 return (NULL);
223 }
224
225 AcpiGbl_GlobalList->TotalAllocated++;
226 AcpiGbl_GlobalList->TotalSize += (UINT32) Size;
227 AcpiGbl_GlobalList->CurrentTotalSize += (UINT32) Size;
279
280 Status = AcpiUtRemoveAllocation (DebugBlock,
281 Component, Module, Line);
282 if (ACPI_FAILURE (Status))
283 {
284 ACPI_EXCEPTION ((AE_INFO, Status, "Could not free memory"));
285 }
286
287 AcpiOsFree (DebugBlock);
288 ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, "%p freed\n", Allocation));
289 return_VOID;
290 }
291
292
293 /*******************************************************************************
294 *
295 * FUNCTION: AcpiUtFindAllocation
296 *
297 * PARAMETERS: Allocation - Address of allocated memory
298 *
299 * RETURN: A list element if found; NULL otherwise.
300 *
301 * DESCRIPTION: Searches for an element in the global allocation tracking list.
302 *
303 ******************************************************************************/
304
305 static ACPI_DEBUG_MEM_BLOCK *
306 AcpiUtFindAllocation (
307 void *Allocation)
308 {
309 ACPI_DEBUG_MEM_BLOCK *Element;
310
311
312 ACPI_FUNCTION_ENTRY ();
313
314
315 Element = AcpiGbl_GlobalList->ListHead;
316
317 /* Search for the address. */
318
319 while (Element)
320 {
321 if (Element == Allocation)
322 {
323 return (Element);
324 }
325
326 Element = Element->Next;
327 }
328
329 return (NULL);
330 }
331
332
333 /*******************************************************************************
334 *
335 * FUNCTION: AcpiUtTrackAllocation
336 *
337 * PARAMETERS: Allocation - Address of allocated memory
338 * Size - Size of the allocation
339 * AllocType - MEM_MALLOC or MEM_CALLOC
340 * Component - Component type of caller
341 * Module - Source file name of caller
342 * Line - Line number of caller
343 *
344 * RETURN: None.
345 *
346 * DESCRIPTION: Inserts an element into the global allocation tracking list.
347 *
348 ******************************************************************************/
349
350 static ACPI_STATUS
351 AcpiUtTrackAllocation (
352 ACPI_DEBUG_MEM_BLOCK *Allocation,
353 ACPI_SIZE Size,
354 UINT8 AllocType,
355 UINT32 Component,
356 const char *Module,
357 UINT32 Line)
358 {
359 ACPI_MEMORY_LIST *MemList;
360 ACPI_DEBUG_MEM_BLOCK *Element;
361 ACPI_STATUS Status = AE_OK;
362
363
364 ACPI_FUNCTION_TRACE_PTR (UtTrackAllocation, Allocation);
365
366
367 if (AcpiGbl_DisableMemTracking)
368 {
369 return_ACPI_STATUS (AE_OK);
370 }
371
372 MemList = AcpiGbl_GlobalList;
373 Status = AcpiUtAcquireMutex (ACPI_MTX_MEMORY);
374 if (ACPI_FAILURE (Status))
375 {
376 return_ACPI_STATUS (Status);
377 }
378
379 /*
380 * Search list for this address to make sure it is not already on the list.
381 * This will catch several kinds of problems.
382 */
383 Element = AcpiUtFindAllocation (Allocation);
384 if (Element)
385 {
386 ACPI_ERROR ((AE_INFO,
387 "UtTrackAllocation: Allocation already present in list! (%p)",
388 Allocation));
389
390 ACPI_ERROR ((AE_INFO, "Element %p Address %p",
391 Element, Allocation));
392
393 goto UnlockAndExit;
394 }
395
396 /* Fill in the instance data. */
397
398 Allocation->Size = (UINT32) Size;
399 Allocation->AllocType = AllocType;
400 Allocation->Component = Component;
401 Allocation->Line = Line;
402
403 ACPI_STRNCPY (Allocation->Module, Module, ACPI_MAX_MODULE_NAME);
404 Allocation->Module[ACPI_MAX_MODULE_NAME-1] = 0;
405
406 /* Insert at list head */
407
408 if (MemList->ListHead)
409 {
410 ((ACPI_DEBUG_MEM_BLOCK *)(MemList->ListHead))->Previous = Allocation;
411 }
412
413 Allocation->Next = MemList->ListHead;
414 Allocation->Previous = NULL;
415
416 MemList->ListHead = Allocation;
417
418
419 UnlockAndExit:
420 Status = AcpiUtReleaseMutex (ACPI_MTX_MEMORY);
421 return_ACPI_STATUS (Status);
422 }
423
424
425 /*******************************************************************************
426 *
427 * FUNCTION: AcpiUtRemoveAllocation
428 *
429 * PARAMETERS: Allocation - Address of allocated memory
430 * Component - Component type of caller
431 * Module - Source file name of caller
432 * Line - Line number of caller
433 *
434 * RETURN:
435 *
436 * DESCRIPTION: Deletes an element from the global allocation tracking list.
437 *
438 ******************************************************************************/
439
440 static ACPI_STATUS
441 AcpiUtRemoveAllocation (
442 ACPI_DEBUG_MEM_BLOCK *Allocation,
443 UINT32 Component,
444 const char *Module,
445 UINT32 Line)
446 {
447 ACPI_MEMORY_LIST *MemList;
448 ACPI_STATUS Status;
449
450
451 ACPI_FUNCTION_TRACE (UtRemoveAllocation);
452
453
454 if (AcpiGbl_DisableMemTracking)
455 {
456 return_ACPI_STATUS (AE_OK);
457 }
458
459 MemList = AcpiGbl_GlobalList;
460 if (NULL == MemList->ListHead)
461 {
462 /* No allocations! */
463
464 ACPI_ERROR ((Module, Line,
465 "Empty allocation list, nothing to free!"));
466
467 return_ACPI_STATUS (AE_OK);
468 }
469
470 Status = AcpiUtAcquireMutex (ACPI_MTX_MEMORY);
471 if (ACPI_FAILURE (Status))
472 {
473 return_ACPI_STATUS (Status);
474 }
475
476 /* Unlink */
477
478 if (Allocation->Previous)
479 {
480 (Allocation->Previous)->Next = Allocation->Next;
481 }
482 else
483 {
484 MemList->ListHead = Allocation->Next;
485 }
486
487 if (Allocation->Next)
488 {
489 (Allocation->Next)->Previous = Allocation->Previous;
490 }
491
492 /* Mark the segment as deleted */
493
494 ACPI_MEMSET (&Allocation->UserSpace, 0xEA, Allocation->Size);
495
496 ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, "Freeing size 0%X\n",
497 Allocation->Size));
498
499 Status = AcpiUtReleaseMutex (ACPI_MTX_MEMORY);
500 return_ACPI_STATUS (Status);
501 }
502
503
504 /*******************************************************************************
505 *
506 * FUNCTION: AcpiUtDumpAllocationInfo
507 *
508 * PARAMETERS:
509 *
510 * RETURN: None
511 *
512 * DESCRIPTION: Print some info about the outstanding allocations.
513 *
514 ******************************************************************************/
515
516 void
517 AcpiUtDumpAllocationInfo (
518 void)
519 {
520 /*
521 ACPI_MEMORY_LIST *MemList;
522 */
523
524 ACPI_FUNCTION_TRACE (UtDumpAllocationInfo);
525
526 /*
527 ACPI_DEBUG_PRINT (TRACE_ALLOCATIONS | TRACE_TABLES,
528 ("%30s: %4d (%3d Kb)\n", "Current allocations",
573 * DESCRIPTION: Print a list of all outstanding allocations.
574 *
575 ******************************************************************************/
576
577 void
578 AcpiUtDumpAllocations (
579 UINT32 Component,
580 const char *Module)
581 {
582 ACPI_DEBUG_MEM_BLOCK *Element;
583 ACPI_DESCRIPTOR *Descriptor;
584 UINT32 NumOutstanding = 0;
585 UINT8 DescriptorType;
586
587
588 ACPI_FUNCTION_TRACE (UtDumpAllocations);
589
590
591 if (AcpiGbl_DisableMemTracking)
592 {
593 return;
594 }
595
596 /*
597 * Walk the allocation list.
598 */
599 if (ACPI_FAILURE (AcpiUtAcquireMutex (ACPI_MTX_MEMORY)))
600 {
601 return;
602 }
603
604 Element = AcpiGbl_GlobalList->ListHead;
605 while (Element)
606 {
607 if ((Element->Component & Component) &&
608 ((Module == NULL) || (0 == ACPI_STRCMP (Module, Element->Module))))
609 {
610 Descriptor = ACPI_CAST_PTR (ACPI_DESCRIPTOR, &Element->UserSpace);
611
612 if (Element->Size < sizeof (ACPI_COMMON_DESCRIPTOR))
613 {
614 AcpiOsPrintf ("%p Length 0x%04X %9.9s-%u "
615 "[Not a Descriptor - too small]\n",
616 Descriptor, Element->Size, Element->Module,
617 Element->Line);
618 }
619 else
620 {
621 /* Ignore allocated objects that are in a cache */
622
623 if (ACPI_GET_DESCRIPTOR_TYPE (Descriptor) != ACPI_DESC_TYPE_CACHED)
624 {
625 AcpiOsPrintf ("%p Length 0x%04X %9.9s-%u [%s] ",
626 Descriptor, Element->Size, Element->Module,
627 Element->Line, AcpiUtGetDescriptorName (Descriptor));
628
629 /* Validate the descriptor type using Type field and length */
630
631 DescriptorType = 0; /* Not a valid descriptor type */
632
633 switch (ACPI_GET_DESCRIPTOR_TYPE (Descriptor))
634 {
635 case ACPI_DESC_TYPE_OPERAND:
636 if (Element->Size == sizeof (ACPI_DESC_TYPE_OPERAND))
637 {
638 DescriptorType = ACPI_DESC_TYPE_OPERAND;
639 }
640 break;
641
642 case ACPI_DESC_TYPE_PARSER:
643 if (Element->Size == sizeof (ACPI_DESC_TYPE_PARSER))
644 {
645 DescriptorType = ACPI_DESC_TYPE_PARSER;
646 }
647 break;
648
649 case ACPI_DESC_TYPE_NAMED:
650 if (Element->Size == sizeof (ACPI_DESC_TYPE_NAMED))
651 {
652 DescriptorType = ACPI_DESC_TYPE_NAMED;
653 }
654 break;
655
656 default:
657 break;
658 }
659
660 /* Display additional info for the major descriptor types */
661
662 switch (DescriptorType)
663 {
664 case ACPI_DESC_TYPE_OPERAND:
665 AcpiOsPrintf ("%12.12s RefCount 0x%04X\n",
666 AcpiUtGetTypeName (Descriptor->Object.Common.Type),
667 Descriptor->Object.Common.ReferenceCount);
668 break;
669
670 case ACPI_DESC_TYPE_PARSER:
671 AcpiOsPrintf ("AmlOpcode 0x%04hX\n",
672 Descriptor->Op.Asl.AmlOpcode);
673 break;
674
675 case ACPI_DESC_TYPE_NAMED:
676 AcpiOsPrintf ("%4.4s\n",
677 AcpiUtGetNodeName (&Descriptor->Node));
678 break;
679
680 default:
681 AcpiOsPrintf ( "\n");
682 break;
683 }
684 }
685 }
686
687 NumOutstanding++;
688 }
689
690 Element = Element->Next;
691 }
692
693 (void) AcpiUtReleaseMutex (ACPI_MTX_MEMORY);
694
695 /* Print summary */
696
697 if (!NumOutstanding)
698 {
699 ACPI_INFO ((AE_INFO, "No outstanding allocations"));
700 }
701 else
702 {
703 ACPI_ERROR ((AE_INFO, "%u(0x%X) Outstanding allocations",
704 NumOutstanding, NumOutstanding));
705 }
706
707 return_VOID;
708 }
709
710 #endif /* ACPI_DBG_TRACK_ALLOCATIONS */
711
|
1 /******************************************************************************
2 *
3 * Module Name: uttrack - Memory allocation tracking routines (debug only)
4 *
5 *****************************************************************************/
6
7 /*
8 * Copyright (C) 2000 - 2013, Intel Corp.
9 * All rights reserved.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions, and the following disclaimer,
16 * without modification.
17 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
18 * substantially similar to the "NO WARRANTY" disclaimer below
19 * ("Disclaimer") and any redistribution must be conditioned upon
20 * including a substantially similar Disclaimer requirement for further
21 * binary redistribution.
22 * 3. Neither the names of the above-listed copyright holders nor the names
23 * of any contributors may be used to endorse or promote products derived
24 * from this software without specific prior written permission.
25 *
26 * Alternatively, this software may be distributed under the terms of the
27 * GNU General Public License ("GPL") version 2 as published by the Free
28 * Software Foundation.
45 * These procedures are used for tracking memory leaks in the subsystem, and
46 * they get compiled out when the ACPI_DBG_TRACK_ALLOCATIONS is not set.
47 *
48 * Each memory allocation is tracked via a doubly linked list. Each
49 * element contains the caller's component, module name, function name, and
50 * line number. AcpiUtAllocate and AcpiUtAllocateZeroed call
51 * AcpiUtTrackAllocation to add an element to the list; deletion
52 * occurs in the body of AcpiUtFree.
53 */
54
55 #define __UTTRACK_C__
56
57 #include "acpi.h"
58 #include "accommon.h"
59
60 #ifdef ACPI_DBG_TRACK_ALLOCATIONS
61
62 #define _COMPONENT ACPI_UTILITIES
63 ACPI_MODULE_NAME ("uttrack")
64
65
66 /* Local prototypes */
67
68 static ACPI_DEBUG_MEM_BLOCK *
69 AcpiUtFindAllocation (
70 ACPI_DEBUG_MEM_BLOCK *Allocation);
71
72 static ACPI_STATUS
73 AcpiUtTrackAllocation (
74 ACPI_DEBUG_MEM_BLOCK *Address,
75 ACPI_SIZE Size,
76 UINT8 AllocType,
77 UINT32 Component,
78 const char *Module,
79 UINT32 Line);
80
81 static ACPI_STATUS
82 AcpiUtRemoveAllocation (
83 ACPI_DEBUG_MEM_BLOCK *Address,
84 UINT32 Component,
85 const char *Module,
86 UINT32 Line);
87
88
89 /*******************************************************************************
90 *
134 * Module - Source file name of caller
135 * Line - Line number of caller
136 *
137 * RETURN: Address of the allocated memory on success, NULL on failure.
138 *
139 * DESCRIPTION: The subsystem's equivalent of malloc.
140 *
141 ******************************************************************************/
142
143 void *
144 AcpiUtAllocateAndTrack (
145 ACPI_SIZE Size,
146 UINT32 Component,
147 const char *Module,
148 UINT32 Line)
149 {
150 ACPI_DEBUG_MEM_BLOCK *Allocation;
151 ACPI_STATUS Status;
152
153
154 /* Check for an inadvertent size of zero bytes */
155
156 if (!Size)
157 {
158 ACPI_WARNING ((Module, Line,
159 "Attempt to allocate zero bytes, allocating 1 byte"));
160 Size = 1;
161 }
162
163 Allocation = AcpiOsAllocate (Size + sizeof (ACPI_DEBUG_MEM_HEADER));
164 if (!Allocation)
165 {
166 /* Report allocation error */
167
168 ACPI_WARNING ((Module, Line,
169 "Could not allocate size %u", (UINT32) Size));
170
171 return (NULL);
172 }
173
174 Status = AcpiUtTrackAllocation (Allocation, Size,
175 ACPI_MEM_MALLOC, Component, Module, Line);
176 if (ACPI_FAILURE (Status))
177 {
178 AcpiOsFree (Allocation);
179 return (NULL);
180 }
181
182 AcpiGbl_GlobalList->TotalAllocated++;
183 AcpiGbl_GlobalList->TotalSize += (UINT32) Size;
184 AcpiGbl_GlobalList->CurrentTotalSize += (UINT32) Size;
185 if (AcpiGbl_GlobalList->CurrentTotalSize > AcpiGbl_GlobalList->MaxOccupied)
186 {
187 AcpiGbl_GlobalList->MaxOccupied = AcpiGbl_GlobalList->CurrentTotalSize;
188 }
189
190 return ((void *) &Allocation->UserSpace);
200 * Module - Source file name of caller
201 * Line - Line number of caller
202 *
203 * RETURN: Address of the allocated memory on success, NULL on failure.
204 *
205 * DESCRIPTION: Subsystem equivalent of calloc.
206 *
207 ******************************************************************************/
208
209 void *
210 AcpiUtAllocateZeroedAndTrack (
211 ACPI_SIZE Size,
212 UINT32 Component,
213 const char *Module,
214 UINT32 Line)
215 {
216 ACPI_DEBUG_MEM_BLOCK *Allocation;
217 ACPI_STATUS Status;
218
219
220 /* Check for an inadvertent size of zero bytes */
221
222 if (!Size)
223 {
224 ACPI_WARNING ((Module, Line,
225 "Attempt to allocate zero bytes, allocating 1 byte"));
226 Size = 1;
227 }
228
229 Allocation = AcpiOsAllocateZeroed (Size + sizeof (ACPI_DEBUG_MEM_HEADER));
230 if (!Allocation)
231 {
232 /* Report allocation error */
233
234 ACPI_ERROR ((Module, Line,
235 "Could not allocate size %u", (UINT32) Size));
236 return (NULL);
237 }
238
239 Status = AcpiUtTrackAllocation (Allocation, Size,
240 ACPI_MEM_CALLOC, Component, Module, Line);
241 if (ACPI_FAILURE (Status))
242 {
243 AcpiOsFree (Allocation);
244 return (NULL);
245 }
246
247 AcpiGbl_GlobalList->TotalAllocated++;
248 AcpiGbl_GlobalList->TotalSize += (UINT32) Size;
249 AcpiGbl_GlobalList->CurrentTotalSize += (UINT32) Size;
301
302 Status = AcpiUtRemoveAllocation (DebugBlock,
303 Component, Module, Line);
304 if (ACPI_FAILURE (Status))
305 {
306 ACPI_EXCEPTION ((AE_INFO, Status, "Could not free memory"));
307 }
308
309 AcpiOsFree (DebugBlock);
310 ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, "%p freed\n", Allocation));
311 return_VOID;
312 }
313
314
315 /*******************************************************************************
316 *
317 * FUNCTION: AcpiUtFindAllocation
318 *
319 * PARAMETERS: Allocation - Address of allocated memory
320 *
321 * RETURN: Three cases:
322 * 1) List is empty, NULL is returned.
323 * 2) Element was found. Returns Allocation parameter.
324 * 3) Element was not found. Returns position where it should be
325 * inserted into the list.
326 *
327 * DESCRIPTION: Searches for an element in the global allocation tracking list.
328 * If the element is not found, returns the location within the
329 * list where the element should be inserted.
330 *
331 * Note: The list is ordered by larger-to-smaller addresses.
332 *
333 * This global list is used to detect memory leaks in ACPICA as
334 * well as other issues such as an attempt to release the same
335 * internal object more than once. Although expensive as far
336 * as cpu time, this list is much more helpful for finding these
337 * types of issues than using memory leak detectors outside of
338 * the ACPICA code.
339 *
340 ******************************************************************************/
341
342 static ACPI_DEBUG_MEM_BLOCK *
343 AcpiUtFindAllocation (
344 ACPI_DEBUG_MEM_BLOCK *Allocation)
345 {
346 ACPI_DEBUG_MEM_BLOCK *Element;
347
348
349 Element = AcpiGbl_GlobalList->ListHead;
350 if (!Element)
351 {
352 return (NULL);
353 }
354
355 /*
356 * Search for the address.
357 *
358 * Note: List is ordered by larger-to-smaller addresses, on the
359 * assumption that a new allocation usually has a larger address
360 * than previous allocations.
361 */
362 while (Element > Allocation)
363 {
364 /* Check for end-of-list */
365
366 if (!Element->Next)
367 {
368 return (Element);
369 }
370
371 Element = Element->Next;
372 }
373
374 if (Element == Allocation)
375 {
376 return (Element);
377 }
378
379 return (Element->Previous);
380 }
381
382
383 /*******************************************************************************
384 *
385 * FUNCTION: AcpiUtTrackAllocation
386 *
387 * PARAMETERS: Allocation - Address of allocated memory
388 * Size - Size of the allocation
389 * AllocType - MEM_MALLOC or MEM_CALLOC
390 * Component - Component type of caller
391 * Module - Source file name of caller
392 * Line - Line number of caller
393 *
394 * RETURN: Status
395 *
396 * DESCRIPTION: Inserts an element into the global allocation tracking list.
397 *
398 ******************************************************************************/
399
400 static ACPI_STATUS
401 AcpiUtTrackAllocation (
402 ACPI_DEBUG_MEM_BLOCK *Allocation,
403 ACPI_SIZE Size,
404 UINT8 AllocType,
405 UINT32 Component,
406 const char *Module,
407 UINT32 Line)
408 {
409 ACPI_MEMORY_LIST *MemList;
410 ACPI_DEBUG_MEM_BLOCK *Element;
411 ACPI_STATUS Status = AE_OK;
412
413
414 ACPI_FUNCTION_TRACE_PTR (UtTrackAllocation, Allocation);
415
416
417 if (AcpiGbl_DisableMemTracking)
418 {
419 return_ACPI_STATUS (AE_OK);
420 }
421
422 MemList = AcpiGbl_GlobalList;
423 Status = AcpiUtAcquireMutex (ACPI_MTX_MEMORY);
424 if (ACPI_FAILURE (Status))
425 {
426 return_ACPI_STATUS (Status);
427 }
428
429 /*
430 * Search the global list for this address to make sure it is not
431 * already present. This will catch several kinds of problems.
432 */
433 Element = AcpiUtFindAllocation (Allocation);
434 if (Element == Allocation)
435 {
436 ACPI_ERROR ((AE_INFO,
437 "UtTrackAllocation: Allocation (%p) already present in global list!",
438 Allocation));
439 goto UnlockAndExit;
440 }
441
442 /* Fill in the instance data */
443
444 Allocation->Size = (UINT32) Size;
445 Allocation->AllocType = AllocType;
446 Allocation->Component = Component;
447 Allocation->Line = Line;
448
449 ACPI_STRNCPY (Allocation->Module, Module, ACPI_MAX_MODULE_NAME);
450 Allocation->Module[ACPI_MAX_MODULE_NAME-1] = 0;
451
452 if (!Element)
453 {
454 /* Insert at list head */
455
456 if (MemList->ListHead)
457 {
458 ((ACPI_DEBUG_MEM_BLOCK *)(MemList->ListHead))->Previous = Allocation;
459 }
460
461 Allocation->Next = MemList->ListHead;
462 Allocation->Previous = NULL;
463
464 MemList->ListHead = Allocation;
465 }
466 else
467 {
468 /* Insert after element */
469
470 Allocation->Next = Element->Next;
471 Allocation->Previous = Element;
472
473 if (Element->Next)
474 {
475 (Element->Next)->Previous = Allocation;
476 }
477
478 Element->Next = Allocation;
479 }
480
481
482 UnlockAndExit:
483 Status = AcpiUtReleaseMutex (ACPI_MTX_MEMORY);
484 return_ACPI_STATUS (Status);
485 }
486
487
488 /*******************************************************************************
489 *
490 * FUNCTION: AcpiUtRemoveAllocation
491 *
492 * PARAMETERS: Allocation - Address of allocated memory
493 * Component - Component type of caller
494 * Module - Source file name of caller
495 * Line - Line number of caller
496 *
497 * RETURN: Status
498 *
499 * DESCRIPTION: Deletes an element from the global allocation tracking list.
500 *
501 ******************************************************************************/
502
503 static ACPI_STATUS
504 AcpiUtRemoveAllocation (
505 ACPI_DEBUG_MEM_BLOCK *Allocation,
506 UINT32 Component,
507 const char *Module,
508 UINT32 Line)
509 {
510 ACPI_MEMORY_LIST *MemList;
511 ACPI_STATUS Status;
512
513
514 ACPI_FUNCTION_NAME (UtRemoveAllocation);
515
516
517 if (AcpiGbl_DisableMemTracking)
518 {
519 return (AE_OK);
520 }
521
522 MemList = AcpiGbl_GlobalList;
523 if (NULL == MemList->ListHead)
524 {
525 /* No allocations! */
526
527 ACPI_ERROR ((Module, Line,
528 "Empty allocation list, nothing to free!"));
529
530 return (AE_OK);
531 }
532
533 Status = AcpiUtAcquireMutex (ACPI_MTX_MEMORY);
534 if (ACPI_FAILURE (Status))
535 {
536 return (Status);
537 }
538
539 /* Unlink */
540
541 if (Allocation->Previous)
542 {
543 (Allocation->Previous)->Next = Allocation->Next;
544 }
545 else
546 {
547 MemList->ListHead = Allocation->Next;
548 }
549
550 if (Allocation->Next)
551 {
552 (Allocation->Next)->Previous = Allocation->Previous;
553 }
554
555 ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, "Freeing %p, size 0%X\n",
556 &Allocation->UserSpace, Allocation->Size));
557
558 /* Mark the segment as deleted */
559
560 ACPI_MEMSET (&Allocation->UserSpace, 0xEA, Allocation->Size);
561
562 Status = AcpiUtReleaseMutex (ACPI_MTX_MEMORY);
563 return (Status);
564 }
565
566
567 /*******************************************************************************
568 *
569 * FUNCTION: AcpiUtDumpAllocationInfo
570 *
571 * PARAMETERS: None
572 *
573 * RETURN: None
574 *
575 * DESCRIPTION: Print some info about the outstanding allocations.
576 *
577 ******************************************************************************/
578
579 void
580 AcpiUtDumpAllocationInfo (
581 void)
582 {
583 /*
584 ACPI_MEMORY_LIST *MemList;
585 */
586
587 ACPI_FUNCTION_TRACE (UtDumpAllocationInfo);
588
589 /*
590 ACPI_DEBUG_PRINT (TRACE_ALLOCATIONS | TRACE_TABLES,
591 ("%30s: %4d (%3d Kb)\n", "Current allocations",
636 * DESCRIPTION: Print a list of all outstanding allocations.
637 *
638 ******************************************************************************/
639
640 void
641 AcpiUtDumpAllocations (
642 UINT32 Component,
643 const char *Module)
644 {
645 ACPI_DEBUG_MEM_BLOCK *Element;
646 ACPI_DESCRIPTOR *Descriptor;
647 UINT32 NumOutstanding = 0;
648 UINT8 DescriptorType;
649
650
651 ACPI_FUNCTION_TRACE (UtDumpAllocations);
652
653
654 if (AcpiGbl_DisableMemTracking)
655 {
656 return_VOID;
657 }
658
659 /*
660 * Walk the allocation list.
661 */
662 if (ACPI_FAILURE (AcpiUtAcquireMutex (ACPI_MTX_MEMORY)))
663 {
664 return_VOID;
665 }
666
667 Element = AcpiGbl_GlobalList->ListHead;
668 while (Element)
669 {
670 if ((Element->Component & Component) &&
671 ((Module == NULL) || (0 == ACPI_STRCMP (Module, Element->Module))))
672 {
673 Descriptor = ACPI_CAST_PTR (ACPI_DESCRIPTOR, &Element->UserSpace);
674
675 if (Element->Size < sizeof (ACPI_COMMON_DESCRIPTOR))
676 {
677 AcpiOsPrintf ("%p Length 0x%04X %9.9s-%u "
678 "[Not a Descriptor - too small]\n",
679 Descriptor, Element->Size, Element->Module,
680 Element->Line);
681 }
682 else
683 {
684 /* Ignore allocated objects that are in a cache */
685
686 if (ACPI_GET_DESCRIPTOR_TYPE (Descriptor) != ACPI_DESC_TYPE_CACHED)
687 {
688 AcpiOsPrintf ("%p Length 0x%04X %9.9s-%u [%s] ",
689 Descriptor, Element->Size, Element->Module,
690 Element->Line, AcpiUtGetDescriptorName (Descriptor));
691
692 /* Validate the descriptor type using Type field and length */
693
694 DescriptorType = 0; /* Not a valid descriptor type */
695
696 switch (ACPI_GET_DESCRIPTOR_TYPE (Descriptor))
697 {
698 case ACPI_DESC_TYPE_OPERAND:
699
700 if (Element->Size == sizeof (ACPI_OPERAND_OBJECT))
701 {
702 DescriptorType = ACPI_DESC_TYPE_OPERAND;
703 }
704 break;
705
706 case ACPI_DESC_TYPE_PARSER:
707
708 if (Element->Size == sizeof (ACPI_PARSE_OBJECT))
709 {
710 DescriptorType = ACPI_DESC_TYPE_PARSER;
711 }
712 break;
713
714 case ACPI_DESC_TYPE_NAMED:
715
716 if (Element->Size == sizeof (ACPI_NAMESPACE_NODE))
717 {
718 DescriptorType = ACPI_DESC_TYPE_NAMED;
719 }
720 break;
721
722 default:
723
724 break;
725 }
726
727 /* Display additional info for the major descriptor types */
728
729 switch (DescriptorType)
730 {
731 case ACPI_DESC_TYPE_OPERAND:
732
733 AcpiOsPrintf ("%12.12s RefCount 0x%04X\n",
734 AcpiUtGetTypeName (Descriptor->Object.Common.Type),
735 Descriptor->Object.Common.ReferenceCount);
736 break;
737
738 case ACPI_DESC_TYPE_PARSER:
739
740 AcpiOsPrintf ("AmlOpcode 0x%04hX\n",
741 Descriptor->Op.Asl.AmlOpcode);
742 break;
743
744 case ACPI_DESC_TYPE_NAMED:
745
746 AcpiOsPrintf ("%4.4s\n",
747 AcpiUtGetNodeName (&Descriptor->Node));
748 break;
749
750 default:
751
752 AcpiOsPrintf ( "\n");
753 break;
754 }
755 }
756 }
757
758 NumOutstanding++;
759 }
760
761 Element = Element->Next;
762 }
763
764 (void) AcpiUtReleaseMutex (ACPI_MTX_MEMORY);
765
766 /* Print summary */
767
768 if (!NumOutstanding)
769 {
770 ACPI_INFO ((AE_INFO, "No outstanding allocations"));
771 }
772 else
773 {
774 ACPI_ERROR ((AE_INFO, "%u(0x%X) Outstanding allocations",
775 NumOutstanding, NumOutstanding));
776 }
777
778 return_VOID;
779 }
780
781 #endif /* ACPI_DBG_TRACK_ALLOCATIONS */
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