1 /******************************************************************************
2  *
3  * Module Name: uttrack - Memory allocation tracking routines (debug only)
4  *
5  *****************************************************************************/
6 
7 /*
8  * Copyright (C) 2000 - 2015, 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.
29  *
30  * NO WARRANTY
31  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
32  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
33  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
34  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
35  * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
36  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
37  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
38  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
39  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
40  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
41  * POSSIBILITY OF SUCH DAMAGES.
42  */
43 
44 /*
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 #include "acpi.h"
56 #include "accommon.h"
57 
58 #ifdef ACPI_DBG_TRACK_ALLOCATIONS
59 
60 #define _COMPONENT          ACPI_UTILITIES
61         ACPI_MODULE_NAME    ("uttrack")
62 
63 
64 /* Local prototypes */
65 
66 static ACPI_DEBUG_MEM_BLOCK *
67 AcpiUtFindAllocation (
68     ACPI_DEBUG_MEM_BLOCK    *Allocation);
69 
70 static ACPI_STATUS
71 AcpiUtTrackAllocation (
72     ACPI_DEBUG_MEM_BLOCK    *Address,
73     ACPI_SIZE               Size,
74     UINT8                   AllocType,
75     UINT32                  Component,
76     const char              *Module,
77     UINT32                  Line);
78 
79 static ACPI_STATUS
80 AcpiUtRemoveAllocation (
81     ACPI_DEBUG_MEM_BLOCK    *Address,
82     UINT32                  Component,
83     const char              *Module,
84     UINT32                  Line);
85 
86 
87 /*******************************************************************************
88  *
89  * FUNCTION:    AcpiUtCreateList
90  *
91  * PARAMETERS:  CacheName       - Ascii name for the cache
92  *              ObjectSize      - Size of each cached object
93  *              ReturnCache     - Where the new cache object is returned
94  *
95  * RETURN:      Status
96  *
97  * DESCRIPTION: Create a local memory list for tracking purposed
98  *
99  ******************************************************************************/
100 
101 ACPI_STATUS
102 AcpiUtCreateList (
103     char                    *ListName,
104     UINT16                  ObjectSize,
105     ACPI_MEMORY_LIST        **ReturnCache)
106 {
107     ACPI_MEMORY_LIST        *Cache;
108 
109 
110     Cache = AcpiOsAllocate (sizeof (ACPI_MEMORY_LIST));
111     if (!Cache)
112     {
113         return (AE_NO_MEMORY);
114     }
115 
116     memset (Cache, 0, sizeof (ACPI_MEMORY_LIST));
117 
118     Cache->ListName = ListName;
119     Cache->ObjectSize = ObjectSize;
120 
121     *ReturnCache = Cache;
122     return (AE_OK);
123 }
124 
125 
126 /*******************************************************************************
127  *
128  * FUNCTION:    AcpiUtAllocateAndTrack
129  *
130  * PARAMETERS:  Size                - Size of the allocation
131  *              Component           - Component type of caller
132  *              Module              - Source file name of caller
133  *              Line                - Line number of caller
134  *
135  * RETURN:      Address of the allocated memory on success, NULL on failure.
136  *
137  * DESCRIPTION: The subsystem's equivalent of malloc.
138  *
139  ******************************************************************************/
140 
141 void *
142 AcpiUtAllocateAndTrack (
143     ACPI_SIZE               Size,
144     UINT32                  Component,
145     const char              *Module,
146     UINT32                  Line)
147 {
148     ACPI_DEBUG_MEM_BLOCK    *Allocation;
149     ACPI_STATUS             Status;
150 
151 
152     /* Check for an inadvertent size of zero bytes */
153 
154     if (!Size)
155     {
156         ACPI_WARNING ((Module, Line,
157             "Attempt to allocate zero bytes, allocating 1 byte"));
158         Size = 1;
159     }
160 
161     Allocation = AcpiOsAllocate (Size + sizeof (ACPI_DEBUG_MEM_HEADER));
162     if (!Allocation)
163     {
164         /* Report allocation error */
165 
166         ACPI_WARNING ((Module, Line,
167             "Could not allocate size %u", (UINT32) Size));
168 
169         return (NULL);
170     }
171 
172     Status = AcpiUtTrackAllocation (
173         Allocation, Size, ACPI_MEM_MALLOC, Component, Module, Line);
174     if (ACPI_FAILURE (Status))
175     {
176         AcpiOsFree (Allocation);
177         return (NULL);
178     }
179 
180     AcpiGbl_GlobalList->TotalAllocated++;
181     AcpiGbl_GlobalList->TotalSize += (UINT32) Size;
182     AcpiGbl_GlobalList->CurrentTotalSize += (UINT32) Size;
183 
184     if (AcpiGbl_GlobalList->CurrentTotalSize >
185         AcpiGbl_GlobalList->MaxOccupied)
186     {
187         AcpiGbl_GlobalList->MaxOccupied =
188             AcpiGbl_GlobalList->CurrentTotalSize;
189     }
190 
191     return ((void *) &Allocation->UserSpace);
192 }
193 
194 
195 /*******************************************************************************
196  *
197  * FUNCTION:    AcpiUtAllocateZeroedAndTrack
198  *
199  * PARAMETERS:  Size                - Size of the allocation
200  *              Component           - Component type of caller
201  *              Module              - Source file name of caller
202  *              Line                - Line number of caller
203  *
204  * RETURN:      Address of the allocated memory on success, NULL on failure.
205  *
206  * DESCRIPTION: Subsystem equivalent of calloc.
207  *
208  ******************************************************************************/
209 
210 void *
211 AcpiUtAllocateZeroedAndTrack (
212     ACPI_SIZE               Size,
213     UINT32                  Component,
214     const char              *Module,
215     UINT32                  Line)
216 {
217     ACPI_DEBUG_MEM_BLOCK    *Allocation;
218     ACPI_STATUS             Status;
219 
220 
221     /* Check for an inadvertent size of zero bytes */
222 
223     if (!Size)
224     {
225         ACPI_WARNING ((Module, Line,
226             "Attempt to allocate zero bytes, allocating 1 byte"));
227         Size = 1;
228     }
229 
230     Allocation = AcpiOsAllocateZeroed (
231         Size + sizeof (ACPI_DEBUG_MEM_HEADER));
232     if (!Allocation)
233     {
234         /* Report allocation error */
235 
236         ACPI_ERROR ((Module, Line,
237             "Could not allocate size %u", (UINT32) Size));
238         return (NULL);
239     }
240 
241     Status = AcpiUtTrackAllocation (Allocation, Size,
242         ACPI_MEM_CALLOC, Component, Module, Line);
243     if (ACPI_FAILURE (Status))
244     {
245         AcpiOsFree (Allocation);
246         return (NULL);
247     }
248 
249     AcpiGbl_GlobalList->TotalAllocated++;
250     AcpiGbl_GlobalList->TotalSize += (UINT32) Size;
251     AcpiGbl_GlobalList->CurrentTotalSize += (UINT32) Size;
252 
253     if (AcpiGbl_GlobalList->CurrentTotalSize >
254         AcpiGbl_GlobalList->MaxOccupied)
255     {
256         AcpiGbl_GlobalList->MaxOccupied =
257             AcpiGbl_GlobalList->CurrentTotalSize;
258     }
259 
260     return ((void *) &Allocation->UserSpace);
261 }
262 
263 
264 /*******************************************************************************
265  *
266  * FUNCTION:    AcpiUtFreeAndTrack
267  *
268  * PARAMETERS:  Allocation          - Address of the memory to deallocate
269  *              Component           - Component type of caller
270  *              Module              - Source file name of caller
271  *              Line                - Line number of caller
272  *
273  * RETURN:      None
274  *
275  * DESCRIPTION: Frees the memory at Allocation
276  *
277  ******************************************************************************/
278 
279 void
280 AcpiUtFreeAndTrack (
281     void                    *Allocation,
282     UINT32                  Component,
283     const char              *Module,
284     UINT32                  Line)
285 {
286     ACPI_DEBUG_MEM_BLOCK    *DebugBlock;
287     ACPI_STATUS             Status;
288 
289 
290     ACPI_FUNCTION_TRACE_PTR (UtFree, Allocation);
291 
292 
293     if (NULL == Allocation)
294     {
295         ACPI_ERROR ((Module, Line,
296             "Attempt to delete a NULL address"));
297 
298         return_VOID;
299     }
300 
301     DebugBlock = ACPI_CAST_PTR (ACPI_DEBUG_MEM_BLOCK,
302         (((char *) Allocation) - sizeof (ACPI_DEBUG_MEM_HEADER)));
303 
304     AcpiGbl_GlobalList->TotalFreed++;
305     AcpiGbl_GlobalList->CurrentTotalSize -= DebugBlock->Size;
306 
307     Status = AcpiUtRemoveAllocation (DebugBlock, Component, Module, Line);
308     if (ACPI_FAILURE (Status))
309     {
310         ACPI_EXCEPTION ((AE_INFO, Status, "Could not free memory"));
311     }
312 
313     AcpiOsFree (DebugBlock);
314     ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, "%p freed (block %p)\n",
315         Allocation, DebugBlock));
316     return_VOID;
317 }
318 
319 
320 /*******************************************************************************
321  *
322  * FUNCTION:    AcpiUtFindAllocation
323  *
324  * PARAMETERS:  Allocation              - Address of allocated memory
325  *
326  * RETURN:      Three cases:
327  *              1) List is empty, NULL is returned.
328  *              2) Element was found. Returns Allocation parameter.
329  *              3) Element was not found. Returns position where it should be
330  *                  inserted into the list.
331  *
332  * DESCRIPTION: Searches for an element in the global allocation tracking list.
333  *              If the element is not found, returns the location within the
334  *              list where the element should be inserted.
335  *
336  *              Note: The list is ordered by larger-to-smaller addresses.
337  *
338  *              This global list is used to detect memory leaks in ACPICA as
339  *              well as other issues such as an attempt to release the same
340  *              internal object more than once. Although expensive as far
341  *              as cpu time, this list is much more helpful for finding these
342  *              types of issues than using memory leak detectors outside of
343  *              the ACPICA code.
344  *
345  ******************************************************************************/
346 
347 static ACPI_DEBUG_MEM_BLOCK *
348 AcpiUtFindAllocation (
349     ACPI_DEBUG_MEM_BLOCK    *Allocation)
350 {
351     ACPI_DEBUG_MEM_BLOCK    *Element;
352 
353 
354     Element = AcpiGbl_GlobalList->ListHead;
355     if (!Element)
356     {
357         return (NULL);
358     }
359 
360     /*
361      * Search for the address.
362      *
363      * Note: List is ordered by larger-to-smaller addresses, on the
364      * assumption that a new allocation usually has a larger address
365      * than previous allocations.
366      */
367     while (Element > Allocation)
368     {
369         /* Check for end-of-list */
370 
371         if (!Element->Next)
372         {
373             return (Element);
374         }
375 
376         Element = Element->Next;
377     }
378 
379     if (Element == Allocation)
380     {
381         return (Element);
382     }
383 
384     return (Element->Previous);
385 }
386 
387 
388 /*******************************************************************************
389  *
390  * FUNCTION:    AcpiUtTrackAllocation
391  *
392  * PARAMETERS:  Allocation          - Address of allocated memory
393  *              Size                - Size of the allocation
394  *              AllocType           - MEM_MALLOC or MEM_CALLOC
395  *              Component           - Component type of caller
396  *              Module              - Source file name of caller
397  *              Line                - Line number of caller
398  *
399  * RETURN:      Status
400  *
401  * DESCRIPTION: Inserts an element into the global allocation tracking list.
402  *
403  ******************************************************************************/
404 
405 static ACPI_STATUS
406 AcpiUtTrackAllocation (
407     ACPI_DEBUG_MEM_BLOCK    *Allocation,
408     ACPI_SIZE               Size,
409     UINT8                   AllocType,
410     UINT32                  Component,
411     const char              *Module,
412     UINT32                  Line)
413 {
414     ACPI_MEMORY_LIST        *MemList;
415     ACPI_DEBUG_MEM_BLOCK    *Element;
416     ACPI_STATUS             Status = AE_OK;
417 
418 
419     ACPI_FUNCTION_TRACE_PTR (UtTrackAllocation, Allocation);
420 
421 
422     if (AcpiGbl_DisableMemTracking)
423     {
424         return_ACPI_STATUS (AE_OK);
425     }
426 
427     MemList = AcpiGbl_GlobalList;
428     Status = AcpiUtAcquireMutex (ACPI_MTX_MEMORY);
429     if (ACPI_FAILURE (Status))
430     {
431         return_ACPI_STATUS (Status);
432     }
433 
434     /*
435      * Search the global list for this address to make sure it is not
436      * already present. This will catch several kinds of problems.
437      */
438     Element = AcpiUtFindAllocation (Allocation);
439     if (Element == Allocation)
440     {
441         ACPI_ERROR ((AE_INFO,
442             "UtTrackAllocation: Allocation (%p) already present in global list!",
443             Allocation));
444         goto UnlockAndExit;
445     }
446 
447     /* Fill in the instance data */
448 
449     Allocation->Size = (UINT32) Size;
450     Allocation->AllocType = AllocType;
451     Allocation->Component = Component;
452     Allocation->Line = Line;
453 
454     strncpy (Allocation->Module, Module, ACPI_MAX_MODULE_NAME);
455     Allocation->Module[ACPI_MAX_MODULE_NAME-1] = 0;
456 
457     if (!Element)
458     {
459         /* Insert at list head */
460 
461         if (MemList->ListHead)
462         {
463             ((ACPI_DEBUG_MEM_BLOCK *)(MemList->ListHead))->Previous =
464                 Allocation;
465         }
466 
467         Allocation->Next = MemList->ListHead;
468         Allocation->Previous = NULL;
469 
470         MemList->ListHead = Allocation;
471     }
472     else
473     {
474         /* Insert after element */
475 
476         Allocation->Next = Element->Next;
477         Allocation->Previous = Element;
478 
479         if (Element->Next)
480         {
481             (Element->Next)->Previous = Allocation;
482         }
483 
484         Element->Next = Allocation;
485     }
486 
487 
488 UnlockAndExit:
489     Status = AcpiUtReleaseMutex (ACPI_MTX_MEMORY);
490     return_ACPI_STATUS (Status);
491 }
492 
493 
494 /*******************************************************************************
495  *
496  * FUNCTION:    AcpiUtRemoveAllocation
497  *
498  * PARAMETERS:  Allocation          - Address of allocated memory
499  *              Component           - Component type of caller
500  *              Module              - Source file name of caller
501  *              Line                - Line number of caller
502  *
503  * RETURN:      Status
504  *
505  * DESCRIPTION: Deletes an element from the global allocation tracking list.
506  *
507  ******************************************************************************/
508 
509 static ACPI_STATUS
510 AcpiUtRemoveAllocation (
511     ACPI_DEBUG_MEM_BLOCK    *Allocation,
512     UINT32                  Component,
513     const char              *Module,
514     UINT32                  Line)
515 {
516     ACPI_MEMORY_LIST        *MemList;
517     ACPI_STATUS             Status;
518 
519 
520     ACPI_FUNCTION_NAME (UtRemoveAllocation);
521 
522 
523     if (AcpiGbl_DisableMemTracking)
524     {
525         return (AE_OK);
526     }
527 
528     MemList = AcpiGbl_GlobalList;
529     if (NULL == MemList->ListHead)
530     {
531         /* No allocations! */
532 
533         ACPI_ERROR ((Module, Line,
534             "Empty allocation list, nothing to free!"));
535 
536         return (AE_OK);
537     }
538 
539     Status = AcpiUtAcquireMutex (ACPI_MTX_MEMORY);
540     if (ACPI_FAILURE (Status))
541     {
542         return (Status);
543     }
544 
545     /* Unlink */
546 
547     if (Allocation->Previous)
548     {
549         (Allocation->Previous)->Next = Allocation->Next;
550     }
551     else
552     {
553         MemList->ListHead = Allocation->Next;
554     }
555 
556     if (Allocation->Next)
557     {
558         (Allocation->Next)->Previous = Allocation->Previous;
559     }
560 
561     ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, "Freeing %p, size 0%X\n",
562         &Allocation->UserSpace, Allocation->Size));
563 
564     /* Mark the segment as deleted */
565 
566     memset (&Allocation->UserSpace, 0xEA, Allocation->Size);
567 
568     Status = AcpiUtReleaseMutex (ACPI_MTX_MEMORY);
569     return (Status);
570 }
571 
572 
573 /*******************************************************************************
574  *
575  * FUNCTION:    AcpiUtDumpAllocationInfo
576  *
577  * PARAMETERS:  None
578  *
579  * RETURN:      None
580  *
581  * DESCRIPTION: Print some info about the outstanding allocations.
582  *
583  ******************************************************************************/
584 
585 void
586 AcpiUtDumpAllocationInfo (
587     void)
588 {
589 /*
590     ACPI_MEMORY_LIST        *MemList;
591 */
592 
593     ACPI_FUNCTION_TRACE (UtDumpAllocationInfo);
594 
595 /*
596     ACPI_DEBUG_PRINT (TRACE_ALLOCATIONS | TRACE_TABLES,
597         ("%30s: %4d (%3d Kb)\n", "Current allocations",
598         MemList->CurrentCount,
599         ROUND_UP_TO_1K (MemList->CurrentSize)));
600 
601     ACPI_DEBUG_PRINT (TRACE_ALLOCATIONS | TRACE_TABLES,
602         ("%30s: %4d (%3d Kb)\n", "Max concurrent allocations",
603         MemList->MaxConcurrentCount,
604         ROUND_UP_TO_1K (MemList->MaxConcurrentSize)));
605 
606 
607     ACPI_DEBUG_PRINT (TRACE_ALLOCATIONS | TRACE_TABLES,
608         ("%30s: %4d (%3d Kb)\n", "Total (all) internal objects",
609         RunningObjectCount,
610         ROUND_UP_TO_1K (RunningObjectSize)));
611 
612     ACPI_DEBUG_PRINT (TRACE_ALLOCATIONS | TRACE_TABLES,
613         ("%30s: %4d (%3d Kb)\n", "Total (all) allocations",
614         RunningAllocCount,
615         ROUND_UP_TO_1K (RunningAllocSize)));
616 
617 
618     ACPI_DEBUG_PRINT (TRACE_ALLOCATIONS | TRACE_TABLES,
619         ("%30s: %4d (%3d Kb)\n", "Current Nodes",
620         AcpiGbl_CurrentNodeCount,
621         ROUND_UP_TO_1K (AcpiGbl_CurrentNodeSize)));
622 
623     ACPI_DEBUG_PRINT (TRACE_ALLOCATIONS | TRACE_TABLES,
624         ("%30s: %4d (%3d Kb)\n", "Max Nodes",
625         AcpiGbl_MaxConcurrentNodeCount,
626         ROUND_UP_TO_1K ((AcpiGbl_MaxConcurrentNodeCount *
627             sizeof (ACPI_NAMESPACE_NODE)))));
628 */
629     return_VOID;
630 }
631 
632 
633 /*******************************************************************************
634  *
635  * FUNCTION:    AcpiUtDumpAllocations
636  *
637  * PARAMETERS:  Component           - Component(s) to dump info for.
638  *              Module              - Module to dump info for. NULL means all.
639  *
640  * RETURN:      None
641  *
642  * DESCRIPTION: Print a list of all outstanding allocations.
643  *
644  ******************************************************************************/
645 
646 void
647 AcpiUtDumpAllocations (
648     UINT32                  Component,
649     const char              *Module)
650 {
651     ACPI_DEBUG_MEM_BLOCK    *Element;
652     ACPI_DESCRIPTOR         *Descriptor;
653     UINT32                  NumOutstanding = 0;
654     UINT8                   DescriptorType;
655 
656 
657     ACPI_FUNCTION_TRACE (UtDumpAllocations);
658 
659 
660     if (AcpiGbl_DisableMemTracking)
661     {
662         return_VOID;
663     }
664 
665     /*
666      * Walk the allocation list.
667      */
668     if (ACPI_FAILURE (AcpiUtAcquireMutex (ACPI_MTX_MEMORY)))
669     {
670         return_VOID;
671     }
672 
673     Element = AcpiGbl_GlobalList->ListHead;
674     while (Element)
675     {
676         if ((Element->Component & Component) &&
677             ((Module == NULL) || (0 == strcmp (Module, Element->Module))))
678         {
679             Descriptor = ACPI_CAST_PTR (
680                 ACPI_DESCRIPTOR, &Element->UserSpace);
681 
682             if (Element->Size < sizeof (ACPI_COMMON_DESCRIPTOR))
683             {
684                 AcpiOsPrintf ("%p Length 0x%04X %9.9s-%u "
685                     "[Not a Descriptor - too small]\n",
686                     Descriptor, Element->Size, Element->Module,
687                     Element->Line);
688             }
689             else
690             {
691                 /* Ignore allocated objects that are in a cache */
692 
693                 if (ACPI_GET_DESCRIPTOR_TYPE (Descriptor) !=
694                     ACPI_DESC_TYPE_CACHED)
695                 {
696                     AcpiOsPrintf ("%p Length 0x%04X %9.9s-%u [%s] ",
697                         Descriptor, Element->Size, Element->Module,
698                         Element->Line, AcpiUtGetDescriptorName (Descriptor));
699 
700                     /* Validate the descriptor type using Type field and length */
701 
702                     DescriptorType = 0; /* Not a valid descriptor type */
703 
704                     switch (ACPI_GET_DESCRIPTOR_TYPE (Descriptor))
705                     {
706                     case ACPI_DESC_TYPE_OPERAND:
707 
708                         if (Element->Size == sizeof (ACPI_OPERAND_OBJECT))
709                         {
710                             DescriptorType = ACPI_DESC_TYPE_OPERAND;
711                         }
712                         break;
713 
714                     case ACPI_DESC_TYPE_PARSER:
715 
716                         if (Element->Size == sizeof (ACPI_PARSE_OBJECT))
717                         {
718                             DescriptorType = ACPI_DESC_TYPE_PARSER;
719                         }
720                         break;
721 
722                     case ACPI_DESC_TYPE_NAMED:
723 
724                         if (Element->Size == sizeof (ACPI_NAMESPACE_NODE))
725                         {
726                             DescriptorType = ACPI_DESC_TYPE_NAMED;
727                         }
728                         break;
729 
730                     default:
731 
732                         break;
733                     }
734 
735                     /* Display additional info for the major descriptor types */
736 
737                     switch (DescriptorType)
738                     {
739                     case ACPI_DESC_TYPE_OPERAND:
740 
741                         AcpiOsPrintf ("%12.12s  RefCount 0x%04X\n",
742                             AcpiUtGetTypeName (Descriptor->Object.Common.Type),
743                             Descriptor->Object.Common.ReferenceCount);
744                         break;
745 
746                     case ACPI_DESC_TYPE_PARSER:
747 
748                         AcpiOsPrintf ("AmlOpcode 0x%04hX\n",
749                             Descriptor->Op.Asl.AmlOpcode);
750                         break;
751 
752                     case ACPI_DESC_TYPE_NAMED:
753 
754                         AcpiOsPrintf ("%4.4s\n",
755                             AcpiUtGetNodeName (&Descriptor->Node));
756                         break;
757 
758                     default:
759 
760                         AcpiOsPrintf ( "\n");
761                         break;
762                     }
763                 }
764             }
765 
766             NumOutstanding++;
767         }
768 
769         Element = Element->Next;
770     }
771 
772     (void) AcpiUtReleaseMutex (ACPI_MTX_MEMORY);
773 
774     /* Print summary */
775 
776     if (!NumOutstanding)
777     {
778         ACPI_INFO ((AE_INFO, "No outstanding allocations"));
779     }
780     else
781     {
782         ACPI_ERROR ((AE_INFO, "%u(0x%X) Outstanding allocations",
783             NumOutstanding, NumOutstanding));
784     }
785 
786     return_VOID;
787 }
788 
789 #endif  /* ACPI_DBG_TRACK_ALLOCATIONS */
790