*
* 1. Copyright Notice
*
- * Some or all of this work - Copyright (c) 1999 - 2011, Intel Corp.
+ * Some or all of this work - Copyright (c) 1999 - 2014, Intel Corp.
* All rights reserved.
*
* 2. License
*
* 2.1. This is your license from Intel Corp. under its intellectual property
- * rights. You may have additional license terms from the party that provided
+ * rights. You may have additional license terms from the party that provided
* you this software, covering your right to use that party's intellectual
* property rights.
*
* offer to sell, and import the Covered Code and derivative works thereof
* solely to the minimum extent necessary to exercise the above copyright
* license, and in no event shall the patent license extend to any additions
- * to or modifications of the Original Intel Code. No other license or right
+ * to or modifications of the Original Intel Code. No other license or right
* is granted directly or by implication, estoppel or otherwise;
*
* The above copyright and patent license is granted only if the following
* Redistribution of source code of any substantial portion of the Covered
* Code or modification with rights to further distribute source must include
* the above Copyright Notice, the above License, this list of Conditions,
- * and the following Disclaimer and Export Compliance provision. In addition,
+ * and the following Disclaimer and Export Compliance provision. In addition,
* Licensee must cause all Covered Code to which Licensee contributes to
* contain a file documenting the changes Licensee made to create that Covered
- * Code and the date of any change. Licensee must include in that file the
- * documentation of any changes made by any predecessor Licensee. Licensee
+ * Code and the date of any change. Licensee must include in that file the
+ * documentation of any changes made by any predecessor Licensee. Licensee
* must include a prominent statement that the modification is derived,
* directly or indirectly, from Original Intel Code.
*
* Redistribution of source code of any substantial portion of the Covered
* Code or modification without rights to further distribute source must
* include the following Disclaimer and Export Compliance provision in the
- * documentation and/or other materials provided with distribution. In
+ * documentation and/or other materials provided with distribution. In
* addition, Licensee may not authorize further sublicense of source of any
* portion of the Covered Code, and must include terms to the effect that the
* license from Licensee to its licensee is limited to the intellectual
* 4. Disclaimer and Export Compliance
*
* 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
- * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
- * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
- * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
- * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
+ * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
+ * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
+ * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
+ * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
* IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
* PARTICULAR PURPOSE.
*
* COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
* SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
* CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
- * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
+ * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
* SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
* LIMITED REMEDY.
*
* 4.3. Licensee shall not export, either directly or indirectly, any of this
* software or system incorporating such software without first obtaining any
* required license or other approval from the U. S. Department of Commerce or
- * any other agency or department of the United States Government. In the
+ * any other agency or department of the United States Government. In the
* event Licensee exports any such software from the United States or
* re-exports any such software from a foreign destination, Licensee shall
* ensure that the distribution and export/re-export of the software is in
* These procedures are used for tracking memory leaks in the subsystem, and
* they get compiled out when the ACPI_DBG_TRACK_ALLOCATIONS is not set.
*
- * Each memory allocation is tracked via a doubly linked list. Each
+ * Each memory allocation is tracked via a doubly linked list. Each
* element contains the caller's component, module name, function name, and
- * line number. AcpiUtAllocate and AcpiUtAllocateZeroed call
+ * line number. AcpiUtAllocate and AcpiUtAllocateZeroed call
* AcpiUtTrackAllocation to add an element to the list; deletion
* occurs in the body of AcpiUtFree.
*/
#define _COMPONENT ACPI_UTILITIES
ACPI_MODULE_NAME ("uttrack")
+
/* Local prototypes */
static ACPI_DEBUG_MEM_BLOCK *
AcpiUtFindAllocation (
- void *Allocation);
+ ACPI_DEBUG_MEM_BLOCK *Allocation);
static ACPI_STATUS
AcpiUtTrackAllocation (
ACPI_STATUS Status;
- Allocation = AcpiUtAllocate (Size + sizeof (ACPI_DEBUG_MEM_HEADER),
- Component, Module, Line);
+ /* Check for an inadvertent size of zero bytes */
+
+ if (!Size)
+ {
+ ACPI_WARNING ((Module, Line,
+ "Attempt to allocate zero bytes, allocating 1 byte"));
+ Size = 1;
+ }
+
+ Allocation = AcpiOsAllocate (Size + sizeof (ACPI_DEBUG_MEM_HEADER));
if (!Allocation)
{
+ /* Report allocation error */
+
+ ACPI_WARNING ((Module, Line,
+ "Could not allocate size %u", (UINT32) Size));
+
return (NULL);
}
ACPI_STATUS Status;
- Allocation = AcpiUtAllocateZeroed (Size + sizeof (ACPI_DEBUG_MEM_HEADER),
- Component, Module, Line);
+ /* Check for an inadvertent size of zero bytes */
+
+ if (!Size)
+ {
+ ACPI_WARNING ((Module, Line,
+ "Attempt to allocate zero bytes, allocating 1 byte"));
+ Size = 1;
+ }
+
+ Allocation = AcpiOsAllocateZeroed (Size + sizeof (ACPI_DEBUG_MEM_HEADER));
if (!Allocation)
{
/* Report allocation error */
}
AcpiOsFree (DebugBlock);
- ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, "%p freed\n", Allocation));
+ ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, "%p freed (block %p)\n",
+ Allocation, DebugBlock));
return_VOID;
}
*
* PARAMETERS: Allocation - Address of allocated memory
*
- * RETURN: A list element if found; NULL otherwise.
+ * RETURN: Three cases:
+ * 1) List is empty, NULL is returned.
+ * 2) Element was found. Returns Allocation parameter.
+ * 3) Element was not found. Returns position where it should be
+ * inserted into the list.
*
* DESCRIPTION: Searches for an element in the global allocation tracking list.
+ * If the element is not found, returns the location within the
+ * list where the element should be inserted.
+ *
+ * Note: The list is ordered by larger-to-smaller addresses.
+ *
+ * This global list is used to detect memory leaks in ACPICA as
+ * well as other issues such as an attempt to release the same
+ * internal object more than once. Although expensive as far
+ * as cpu time, this list is much more helpful for finding these
+ * types of issues than using memory leak detectors outside of
+ * the ACPICA code.
*
******************************************************************************/
static ACPI_DEBUG_MEM_BLOCK *
AcpiUtFindAllocation (
- void *Allocation)
+ ACPI_DEBUG_MEM_BLOCK *Allocation)
{
ACPI_DEBUG_MEM_BLOCK *Element;
- ACPI_FUNCTION_ENTRY ();
-
-
Element = AcpiGbl_GlobalList->ListHead;
+ if (!Element)
+ {
+ return (NULL);
+ }
- /* Search for the address. */
-
- while (Element)
+ /*
+ * Search for the address.
+ *
+ * Note: List is ordered by larger-to-smaller addresses, on the
+ * assumption that a new allocation usually has a larger address
+ * than previous allocations.
+ */
+ while (Element > Allocation)
{
- if (Element == Allocation)
+ /* Check for end-of-list */
+
+ if (!Element->Next)
{
return (Element);
}
Element = Element->Next;
}
- return (NULL);
+ if (Element == Allocation)
+ {
+ return (Element);
+ }
+
+ return (Element->Previous);
}
* Module - Source file name of caller
* Line - Line number of caller
*
- * RETURN: None.
+ * RETURN: Status
*
* DESCRIPTION: Inserts an element into the global allocation tracking list.
*
}
/*
- * Search list for this address to make sure it is not already on the list.
- * This will catch several kinds of problems.
+ * Search the global list for this address to make sure it is not
+ * already present. This will catch several kinds of problems.
*/
Element = AcpiUtFindAllocation (Allocation);
- if (Element)
+ if (Element == Allocation)
{
ACPI_ERROR ((AE_INFO,
- "UtTrackAllocation: Allocation already present in list! (%p)",
+ "UtTrackAllocation: Allocation (%p) already present in global list!",
Allocation));
-
- ACPI_ERROR ((AE_INFO, "Element %p Address %p",
- Element, Allocation));
-
goto UnlockAndExit;
}
- /* Fill in the instance data. */
+ /* Fill in the instance data */
Allocation->Size = (UINT32) Size;
Allocation->AllocType = AllocType;
ACPI_STRNCPY (Allocation->Module, Module, ACPI_MAX_MODULE_NAME);
Allocation->Module[ACPI_MAX_MODULE_NAME-1] = 0;
- /* Insert at list head */
-
- if (MemList->ListHead)
+ if (!Element)
{
- ((ACPI_DEBUG_MEM_BLOCK *)(MemList->ListHead))->Previous = Allocation;
+ /* Insert at list head */
+
+ if (MemList->ListHead)
+ {
+ ((ACPI_DEBUG_MEM_BLOCK *)(MemList->ListHead))->Previous = Allocation;
+ }
+
+ Allocation->Next = MemList->ListHead;
+ Allocation->Previous = NULL;
+
+ MemList->ListHead = Allocation;
}
+ else
+ {
+ /* Insert after element */
+
+ Allocation->Next = Element->Next;
+ Allocation->Previous = Element;
- Allocation->Next = MemList->ListHead;
- Allocation->Previous = NULL;
+ if (Element->Next)
+ {
+ (Element->Next)->Previous = Allocation;
+ }
- MemList->ListHead = Allocation;
+ Element->Next = Allocation;
+ }
UnlockAndExit:
* Module - Source file name of caller
* Line - Line number of caller
*
- * RETURN:
+ * RETURN: Status
*
* DESCRIPTION: Deletes an element from the global allocation tracking list.
*
ACPI_STATUS Status;
- ACPI_FUNCTION_TRACE (UtRemoveAllocation);
+ ACPI_FUNCTION_NAME (UtRemoveAllocation);
if (AcpiGbl_DisableMemTracking)
{
- return_ACPI_STATUS (AE_OK);
+ return (AE_OK);
}
MemList = AcpiGbl_GlobalList;
ACPI_ERROR ((Module, Line,
"Empty allocation list, nothing to free!"));
- return_ACPI_STATUS (AE_OK);
+ return (AE_OK);
}
Status = AcpiUtAcquireMutex (ACPI_MTX_MEMORY);
if (ACPI_FAILURE (Status))
{
- return_ACPI_STATUS (Status);
+ return (Status);
}
/* Unlink */
(Allocation->Next)->Previous = Allocation->Previous;
}
+ ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, "Freeing %p, size 0%X\n",
+ &Allocation->UserSpace, Allocation->Size));
+
/* Mark the segment as deleted */
ACPI_MEMSET (&Allocation->UserSpace, 0xEA, Allocation->Size);
- ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, "Freeing size 0%X\n",
- Allocation->Size));
-
Status = AcpiUtReleaseMutex (ACPI_MTX_MEMORY);
- return_ACPI_STATUS (Status);
+ return (Status);
}
*
* FUNCTION: AcpiUtDumpAllocationInfo
*
- * PARAMETERS:
+ * PARAMETERS: None
*
* RETURN: None
*
* FUNCTION: AcpiUtDumpAllocations
*
* PARAMETERS: Component - Component(s) to dump info for.
- * Module - Module to dump info for. NULL means all.
+ * Module - Module to dump info for. NULL means all.
*
* RETURN: None
*
if (AcpiGbl_DisableMemTracking)
{
- return;
+ return_VOID;
}
/*
*/
if (ACPI_FAILURE (AcpiUtAcquireMutex (ACPI_MTX_MEMORY)))
{
- return;
+ return_VOID;
}
Element = AcpiGbl_GlobalList->ListHead;
switch (ACPI_GET_DESCRIPTOR_TYPE (Descriptor))
{
case ACPI_DESC_TYPE_OPERAND:
- if (Element->Size == sizeof (ACPI_DESC_TYPE_OPERAND))
+
+ if (Element->Size == sizeof (ACPI_OPERAND_OBJECT))
{
DescriptorType = ACPI_DESC_TYPE_OPERAND;
}
break;
case ACPI_DESC_TYPE_PARSER:
- if (Element->Size == sizeof (ACPI_DESC_TYPE_PARSER))
+
+ if (Element->Size == sizeof (ACPI_PARSE_OBJECT))
{
DescriptorType = ACPI_DESC_TYPE_PARSER;
}
break;
case ACPI_DESC_TYPE_NAMED:
- if (Element->Size == sizeof (ACPI_DESC_TYPE_NAMED))
+
+ if (Element->Size == sizeof (ACPI_NAMESPACE_NODE))
{
DescriptorType = ACPI_DESC_TYPE_NAMED;
}
break;
default:
+
break;
}
switch (DescriptorType)
{
case ACPI_DESC_TYPE_OPERAND:
+
AcpiOsPrintf ("%12.12s RefCount 0x%04X\n",
AcpiUtGetTypeName (Descriptor->Object.Common.Type),
Descriptor->Object.Common.ReferenceCount);
break;
case ACPI_DESC_TYPE_PARSER:
+
AcpiOsPrintf ("AmlOpcode 0x%04hX\n",
Descriptor->Op.Asl.AmlOpcode);
break;
case ACPI_DESC_TYPE_NAMED:
+
AcpiOsPrintf ("%4.4s\n",
AcpiUtGetNodeName (&Descriptor->Node));
break;
default:
+
AcpiOsPrintf ( "\n");
break;
}
}
#endif /* ACPI_DBG_TRACK_ALLOCATIONS */
-
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