| 0,0 → 1,828 |
|---|
| /******************************************************************************* |
| * |
| * Module Name: utdelete - object deletion and reference count utilities |
| * |
| ******************************************************************************/ |
| |
| /****************************************************************************** |
| * |
| * 1. Copyright Notice |
| * |
| * Some or all of this work - Copyright (c) 1999 - 2010, 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 |
| * you this software, covering your right to use that party's intellectual |
| * property rights. |
| * |
| * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a |
| * copy of the source code appearing in this file ("Covered Code") an |
| * irrevocable, perpetual, worldwide license under Intel's copyrights in the |
| * base code distributed originally by Intel ("Original Intel Code") to copy, |
| * make derivatives, distribute, use and display any portion of the Covered |
| * Code in any form, with the right to sublicense such rights; and |
| * |
| * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent |
| * license (with the right to sublicense), under only those claims of Intel |
| * patents that are infringed by the Original Intel Code, to make, use, sell, |
| * 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 |
| * is granted directly or by implication, estoppel or otherwise; |
| * |
| * The above copyright and patent license is granted only if the following |
| * conditions are met: |
| * |
| * 3. Conditions |
| * |
| * 3.1. Redistribution of Source with Rights to Further Distribute Source. |
| * 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, |
| * 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 |
| * must include a prominent statement that the modification is derived, |
| * directly or indirectly, from Original Intel Code. |
| * |
| * 3.2. Redistribution of Source with no Rights to Further Distribute Source. |
| * 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 |
| * 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 |
| * property embodied in the software Licensee provides to its licensee, and |
| * not to intellectual property embodied in modifications its licensee may |
| * make. |
| * |
| * 3.3. Redistribution of Executable. Redistribution in executable form of any |
| * substantial portion of the Covered Code or modification must reproduce the |
| * above Copyright Notice, and the following Disclaimer and Export Compliance |
| * provision in the documentation and/or other materials provided with the |
| * distribution. |
| * |
| * 3.4. Intel retains all right, title, and interest in and to the Original |
| * Intel Code. |
| * |
| * 3.5. Neither the name Intel nor any other trademark owned or controlled by |
| * Intel shall be used in advertising or otherwise to promote the sale, use or |
| * other dealings in products derived from or relating to the Covered Code |
| * without prior written authorization from Intel. |
| * |
| * 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 |
| * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A |
| * PARTICULAR PURPOSE. |
| * |
| * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES |
| * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR |
| * 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 |
| * 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 |
| * 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 |
| * compliance with all laws, regulations, orders, or other restrictions of the |
| * U.S. Export Administration Regulations. Licensee agrees that neither it nor |
| * any of its subsidiaries will export/re-export any technical data, process, |
| * software, or service, directly or indirectly, to any country for which the |
| * United States government or any agency thereof requires an export license, |
| * other governmental approval, or letter of assurance, without first obtaining |
| * such license, approval or letter. |
| * |
| *****************************************************************************/ |
| |
| #define __UTDELETE_C__ |
| |
| #include "acpi.h" |
| #include "accommon.h" |
| #include "acinterp.h" |
| #include "acnamesp.h" |
| #include "acevents.h" |
| |
| |
| #define _COMPONENT ACPI_UTILITIES |
| ACPI_MODULE_NAME ("utdelete") |
| |
| /* Local prototypes */ |
| |
| static void |
| AcpiUtDeleteInternalObj ( |
| ACPI_OPERAND_OBJECT *Object); |
| |
| static void |
| AcpiUtUpdateRefCount ( |
| ACPI_OPERAND_OBJECT *Object, |
| UINT32 Action); |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiUtDeleteInternalObj |
| * |
| * PARAMETERS: Object - Object to be deleted |
| * |
| * RETURN: None |
| * |
| * DESCRIPTION: Low level object deletion, after reference counts have been |
| * updated (All reference counts, including sub-objects!) |
| * |
| ******************************************************************************/ |
| |
| static void |
| AcpiUtDeleteInternalObj ( |
| ACPI_OPERAND_OBJECT *Object) |
| { |
| void *ObjPointer = NULL; |
| ACPI_OPERAND_OBJECT *HandlerDesc; |
| ACPI_OPERAND_OBJECT *SecondDesc; |
| ACPI_OPERAND_OBJECT *NextDesc; |
| ACPI_OPERAND_OBJECT **LastObjPtr; |
| |
| |
| ACPI_FUNCTION_TRACE_PTR (UtDeleteInternalObj, Object); |
| |
| |
| if (!Object) |
| { |
| return_VOID; |
| } |
| |
| /* |
| * Must delete or free any pointers within the object that are not |
| * actual ACPI objects (for example, a raw buffer pointer). |
| */ |
| switch (Object->Common.Type) |
| { |
| case ACPI_TYPE_STRING: |
| |
| ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, "**** String %p, ptr %p\n", |
| Object, Object->String.Pointer)); |
| |
| /* Free the actual string buffer */ |
| |
| if (!(Object->Common.Flags & AOPOBJ_STATIC_POINTER)) |
| { |
| /* But only if it is NOT a pointer into an ACPI table */ |
| |
| ObjPointer = Object->String.Pointer; |
| } |
| break; |
| |
| |
| case ACPI_TYPE_BUFFER: |
| |
| ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, "**** Buffer %p, ptr %p\n", |
| Object, Object->Buffer.Pointer)); |
| |
| /* Free the actual buffer */ |
| |
| if (!(Object->Common.Flags & AOPOBJ_STATIC_POINTER)) |
| { |
| /* But only if it is NOT a pointer into an ACPI table */ |
| |
| ObjPointer = Object->Buffer.Pointer; |
| } |
| break; |
| |
| |
| case ACPI_TYPE_PACKAGE: |
| |
| ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, " **** Package of count %X\n", |
| Object->Package.Count)); |
| |
| /* |
| * Elements of the package are not handled here, they are deleted |
| * separately |
| */ |
| |
| /* Free the (variable length) element pointer array */ |
| |
| ObjPointer = Object->Package.Elements; |
| break; |
| |
| |
| /* |
| * These objects have a possible list of notify handlers. |
| * Device object also may have a GPE block. |
| */ |
| case ACPI_TYPE_DEVICE: |
| |
| if (Object->Device.GpeBlock) |
| { |
| (void) AcpiEvDeleteGpeBlock (Object->Device.GpeBlock); |
| } |
| |
| /*lint -fallthrough */ |
| |
| case ACPI_TYPE_PROCESSOR: |
| case ACPI_TYPE_THERMAL: |
| |
| /* Walk the notify handler list for this object */ |
| |
| HandlerDesc = Object->CommonNotify.Handler; |
| while (HandlerDesc) |
| { |
| NextDesc = HandlerDesc->AddressSpace.Next; |
| AcpiUtRemoveReference (HandlerDesc); |
| HandlerDesc = NextDesc; |
| } |
| break; |
| |
| |
| case ACPI_TYPE_MUTEX: |
| |
| ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, |
| "***** Mutex %p, OS Mutex %p\n", |
| Object, Object->Mutex.OsMutex)); |
| |
| if (Object == AcpiGbl_GlobalLockMutex) |
| { |
| /* Global Lock has extra semaphore */ |
| |
| (void) AcpiOsDeleteSemaphore (AcpiGbl_GlobalLockSemaphore); |
| AcpiGbl_GlobalLockSemaphore = NULL; |
| |
| AcpiOsDeleteMutex (Object->Mutex.OsMutex); |
| AcpiGbl_GlobalLockMutex = NULL; |
| } |
| else |
| { |
| AcpiExUnlinkMutex (Object); |
| AcpiOsDeleteMutex (Object->Mutex.OsMutex); |
| } |
| break; |
| |
| |
| case ACPI_TYPE_EVENT: |
| |
| ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, |
| "***** Event %p, OS Semaphore %p\n", |
| Object, Object->Event.OsSemaphore)); |
| |
| (void) AcpiOsDeleteSemaphore (Object->Event.OsSemaphore); |
| Object->Event.OsSemaphore = NULL; |
| break; |
| |
| |
| case ACPI_TYPE_METHOD: |
| |
| ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, |
| "***** Method %p\n", Object)); |
| |
| /* Delete the method mutex if it exists */ |
| |
| if (Object->Method.Mutex) |
| { |
| AcpiOsDeleteMutex (Object->Method.Mutex->Mutex.OsMutex); |
| AcpiUtDeleteObjectDesc (Object->Method.Mutex); |
| Object->Method.Mutex = NULL; |
| } |
| break; |
| |
| |
| case ACPI_TYPE_REGION: |
| |
| ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, |
| "***** Region %p\n", Object)); |
| |
| SecondDesc = AcpiNsGetSecondaryObject (Object); |
| if (SecondDesc) |
| { |
| /* |
| * Free the RegionContext if and only if the handler is one of the |
| * default handlers -- and therefore, we created the context object |
| * locally, it was not created by an external caller. |
| */ |
| HandlerDesc = Object->Region.Handler; |
| if (HandlerDesc) |
| { |
| NextDesc = HandlerDesc->AddressSpace.RegionList; |
| LastObjPtr = &HandlerDesc->AddressSpace.RegionList; |
| |
| /* Remove the region object from the handler's list */ |
| |
| while (NextDesc) |
| { |
| if (NextDesc == Object) |
| { |
| *LastObjPtr = NextDesc->Region.Next; |
| break; |
| } |
| |
| /* Walk the linked list of handler */ |
| |
| LastObjPtr = &NextDesc->Region.Next; |
| NextDesc = NextDesc->Region.Next; |
| } |
| |
| if (HandlerDesc->AddressSpace.HandlerFlags & |
| ACPI_ADDR_HANDLER_DEFAULT_INSTALLED) |
| { |
| /* Deactivate region and free region context */ |
| |
| if (HandlerDesc->AddressSpace.Setup) |
| { |
| (void) HandlerDesc->AddressSpace.Setup (Object, |
| ACPI_REGION_DEACTIVATE, |
| HandlerDesc->AddressSpace.Context, |
| &SecondDesc->Extra.RegionContext); |
| } |
| } |
| |
| AcpiUtRemoveReference (HandlerDesc); |
| } |
| |
| /* Now we can free the Extra object */ |
| |
| AcpiUtDeleteObjectDesc (SecondDesc); |
| } |
| break; |
| |
| |
| case ACPI_TYPE_BUFFER_FIELD: |
| |
| ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, |
| "***** Buffer Field %p\n", Object)); |
| |
| SecondDesc = AcpiNsGetSecondaryObject (Object); |
| if (SecondDesc) |
| { |
| AcpiUtDeleteObjectDesc (SecondDesc); |
| } |
| break; |
| |
| |
| case ACPI_TYPE_LOCAL_BANK_FIELD: |
| |
| ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, |
| "***** Bank Field %p\n", Object)); |
| |
| SecondDesc = AcpiNsGetSecondaryObject (Object); |
| if (SecondDesc) |
| { |
| AcpiUtDeleteObjectDesc (SecondDesc); |
| } |
| break; |
| |
| |
| default: |
| break; |
| } |
| |
| /* Free any allocated memory (pointer within the object) found above */ |
| |
| if (ObjPointer) |
| { |
| ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, "Deleting Object Subptr %p\n", |
| ObjPointer)); |
| ACPI_FREE (ObjPointer); |
| } |
| |
| /* Now the object can be safely deleted */ |
| |
| ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, "Deleting Object %p [%s]\n", |
| Object, AcpiUtGetObjectTypeName (Object))); |
| |
| AcpiUtDeleteObjectDesc (Object); |
| return_VOID; |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiUtDeleteInternalObjectList |
| * |
| * PARAMETERS: ObjList - Pointer to the list to be deleted |
| * |
| * RETURN: None |
| * |
| * DESCRIPTION: This function deletes an internal object list, including both |
| * simple objects and package objects |
| * |
| ******************************************************************************/ |
| |
| void |
| AcpiUtDeleteInternalObjectList ( |
| ACPI_OPERAND_OBJECT **ObjList) |
| { |
| ACPI_OPERAND_OBJECT **InternalObj; |
| |
| |
| ACPI_FUNCTION_TRACE (UtDeleteInternalObjectList); |
| |
| |
| /* Walk the null-terminated internal list */ |
| |
| for (InternalObj = ObjList; *InternalObj; InternalObj++) |
| { |
| AcpiUtRemoveReference (*InternalObj); |
| } |
| |
| /* Free the combined parameter pointer list and object array */ |
| |
| ACPI_FREE (ObjList); |
| return_VOID; |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiUtUpdateRefCount |
| * |
| * PARAMETERS: Object - Object whose ref count is to be updated |
| * Action - What to do |
| * |
| * RETURN: New ref count |
| * |
| * DESCRIPTION: Modify the ref count and return it. |
| * |
| ******************************************************************************/ |
| |
| static void |
| AcpiUtUpdateRefCount ( |
| ACPI_OPERAND_OBJECT *Object, |
| UINT32 Action) |
| { |
| UINT16 Count; |
| UINT16 NewCount; |
| |
| |
| ACPI_FUNCTION_NAME (UtUpdateRefCount); |
| |
| |
| if (!Object) |
| { |
| return; |
| } |
| |
| Count = Object->Common.ReferenceCount; |
| NewCount = Count; |
| |
| /* |
| * Perform the reference count action (increment, decrement, force delete) |
| */ |
| switch (Action) |
| { |
| case REF_INCREMENT: |
| |
| NewCount++; |
| Object->Common.ReferenceCount = NewCount; |
| |
| ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, |
| "Obj %p Refs=%X, [Incremented]\n", |
| Object, NewCount)); |
| break; |
| |
| case REF_DECREMENT: |
| |
| if (Count < 1) |
| { |
| ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, |
| "Obj %p Refs=%X, can't decrement! (Set to 0)\n", |
| Object, NewCount)); |
| |
| NewCount = 0; |
| } |
| else |
| { |
| NewCount--; |
| |
| ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, |
| "Obj %p Refs=%X, [Decremented]\n", |
| Object, NewCount)); |
| } |
| |
| if (Object->Common.Type == ACPI_TYPE_METHOD) |
| { |
| ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, |
| "Method Obj %p Refs=%X, [Decremented]\n", Object, NewCount)); |
| } |
| |
| Object->Common.ReferenceCount = NewCount; |
| if (NewCount == 0) |
| { |
| AcpiUtDeleteInternalObj (Object); |
| } |
| break; |
| |
| case REF_FORCE_DELETE: |
| |
| ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, |
| "Obj %p Refs=%X, Force delete! (Set to 0)\n", Object, Count)); |
| |
| NewCount = 0; |
| Object->Common.ReferenceCount = NewCount; |
| AcpiUtDeleteInternalObj (Object); |
| break; |
| |
| default: |
| |
| ACPI_ERROR ((AE_INFO, "Unknown action (0x%X)", Action)); |
| break; |
| } |
| |
| /* |
| * Sanity check the reference count, for debug purposes only. |
| * (A deleted object will have a huge reference count) |
| */ |
| if (Count > ACPI_MAX_REFERENCE_COUNT) |
| { |
| ACPI_WARNING ((AE_INFO, |
| "Large Reference Count (0x%X) in object %p", Count, Object)); |
| } |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiUtUpdateObjectReference |
| * |
| * PARAMETERS: Object - Increment ref count for this object |
| * and all sub-objects |
| * Action - Either REF_INCREMENT or REF_DECREMENT or |
| * REF_FORCE_DELETE |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Increment the object reference count |
| * |
| * Object references are incremented when: |
| * 1) An object is attached to a Node (namespace object) |
| * 2) An object is copied (all subobjects must be incremented) |
| * |
| * Object references are decremented when: |
| * 1) An object is detached from an Node |
| * |
| ******************************************************************************/ |
| |
| ACPI_STATUS |
| AcpiUtUpdateObjectReference ( |
| ACPI_OPERAND_OBJECT *Object, |
| UINT16 Action) |
| { |
| ACPI_STATUS Status = AE_OK; |
| ACPI_GENERIC_STATE *StateList = NULL; |
| ACPI_OPERAND_OBJECT *NextObject = NULL; |
| ACPI_GENERIC_STATE *State; |
| UINT32 i; |
| |
| |
| ACPI_FUNCTION_TRACE_PTR (UtUpdateObjectReference, Object); |
| |
| |
| while (Object) |
| { |
| /* Make sure that this isn't a namespace handle */ |
| |
| if (ACPI_GET_DESCRIPTOR_TYPE (Object) == ACPI_DESC_TYPE_NAMED) |
| { |
| ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, |
| "Object %p is NS handle\n", Object)); |
| return_ACPI_STATUS (AE_OK); |
| } |
| |
| /* |
| * All sub-objects must have their reference count incremented also. |
| * Different object types have different subobjects. |
| */ |
| switch (Object->Common.Type) |
| { |
| case ACPI_TYPE_DEVICE: |
| case ACPI_TYPE_PROCESSOR: |
| case ACPI_TYPE_POWER: |
| case ACPI_TYPE_THERMAL: |
| |
| /* Update the notify objects for these types (if present) */ |
| |
| AcpiUtUpdateRefCount (Object->CommonNotify.SystemNotify, Action); |
| AcpiUtUpdateRefCount (Object->CommonNotify.DeviceNotify, Action); |
| break; |
| |
| case ACPI_TYPE_PACKAGE: |
| /* |
| * We must update all the sub-objects of the package, |
| * each of whom may have their own sub-objects. |
| */ |
| for (i = 0; i < Object->Package.Count; i++) |
| { |
| /* |
| * Push each element onto the stack for later processing. |
| * Note: There can be null elements within the package, |
| * these are simply ignored |
| */ |
| Status = AcpiUtCreateUpdateStateAndPush ( |
| Object->Package.Elements[i], Action, &StateList); |
| if (ACPI_FAILURE (Status)) |
| { |
| goto ErrorExit; |
| } |
| } |
| break; |
| |
| case ACPI_TYPE_BUFFER_FIELD: |
| |
| NextObject = Object->BufferField.BufferObj; |
| break; |
| |
| case ACPI_TYPE_LOCAL_REGION_FIELD: |
| |
| NextObject = Object->Field.RegionObj; |
| break; |
| |
| case ACPI_TYPE_LOCAL_BANK_FIELD: |
| |
| NextObject = Object->BankField.BankObj; |
| Status = AcpiUtCreateUpdateStateAndPush ( |
| Object->BankField.RegionObj, Action, &StateList); |
| if (ACPI_FAILURE (Status)) |
| { |
| goto ErrorExit; |
| } |
| break; |
| |
| case ACPI_TYPE_LOCAL_INDEX_FIELD: |
| |
| NextObject = Object->IndexField.IndexObj; |
| Status = AcpiUtCreateUpdateStateAndPush ( |
| Object->IndexField.DataObj, Action, &StateList); |
| if (ACPI_FAILURE (Status)) |
| { |
| goto ErrorExit; |
| } |
| break; |
| |
| case ACPI_TYPE_LOCAL_REFERENCE: |
| /* |
| * The target of an Index (a package, string, or buffer) or a named |
| * reference must track changes to the ref count of the index or |
| * target object. |
| */ |
| if ((Object->Reference.Class == ACPI_REFCLASS_INDEX) || |
| (Object->Reference.Class== ACPI_REFCLASS_NAME)) |
| { |
| NextObject = Object->Reference.Object; |
| } |
| break; |
| |
| case ACPI_TYPE_REGION: |
| default: |
| break; /* No subobjects for all other types */ |
| } |
| |
| /* |
| * Now we can update the count in the main object. This can only |
| * happen after we update the sub-objects in case this causes the |
| * main object to be deleted. |
| */ |
| AcpiUtUpdateRefCount (Object, Action); |
| Object = NULL; |
| |
| /* Move on to the next object to be updated */ |
| |
| if (NextObject) |
| { |
| Object = NextObject; |
| NextObject = NULL; |
| } |
| else if (StateList) |
| { |
| State = AcpiUtPopGenericState (&StateList); |
| Object = State->Update.Object; |
| AcpiUtDeleteGenericState (State); |
| } |
| } |
| |
| return_ACPI_STATUS (AE_OK); |
| |
| |
| ErrorExit: |
| |
| ACPI_EXCEPTION ((AE_INFO, Status, |
| "Could not update object reference count")); |
| |
| /* Free any stacked Update State objects */ |
| |
| while (StateList) |
| { |
| State = AcpiUtPopGenericState (&StateList); |
| AcpiUtDeleteGenericState (State); |
| } |
| |
| return_ACPI_STATUS (Status); |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiUtAddReference |
| * |
| * PARAMETERS: Object - Object whose reference count is to be |
| * incremented |
| * |
| * RETURN: None |
| * |
| * DESCRIPTION: Add one reference to an ACPI object |
| * |
| ******************************************************************************/ |
| |
| void |
| AcpiUtAddReference ( |
| ACPI_OPERAND_OBJECT *Object) |
| { |
| |
| ACPI_FUNCTION_TRACE_PTR (UtAddReference, Object); |
| |
| |
| /* Ensure that we have a valid object */ |
| |
| if (!AcpiUtValidInternalObject (Object)) |
| { |
| return_VOID; |
| } |
| |
| ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, |
| "Obj %p Current Refs=%X [To Be Incremented]\n", |
| Object, Object->Common.ReferenceCount)); |
| |
| /* Increment the reference count */ |
| |
| (void) AcpiUtUpdateObjectReference (Object, REF_INCREMENT); |
| return_VOID; |
| } |
| |
| |
| /******************************************************************************* |
| * |
| * FUNCTION: AcpiUtRemoveReference |
| * |
| * PARAMETERS: Object - Object whose ref count will be decremented |
| * |
| * RETURN: None |
| * |
| * DESCRIPTION: Decrement the reference count of an ACPI internal object |
| * |
| ******************************************************************************/ |
| |
| void |
| AcpiUtRemoveReference ( |
| ACPI_OPERAND_OBJECT *Object) |
| { |
| |
| ACPI_FUNCTION_TRACE_PTR (UtRemoveReference, Object); |
| |
| |
| /* |
| * Allow a NULL pointer to be passed in, just ignore it. This saves |
| * each caller from having to check. Also, ignore NS nodes. |
| * |
| */ |
| if (!Object || |
| (ACPI_GET_DESCRIPTOR_TYPE (Object) == ACPI_DESC_TYPE_NAMED)) |
| |
| { |
| return_VOID; |
| } |
| |
| /* Ensure that we have a valid object */ |
| |
| if (!AcpiUtValidInternalObject (Object)) |
| { |
| return_VOID; |
| } |
| |
| ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS, |
| "Obj %p Current Refs=%X [To Be Decremented]\n", |
| Object, Object->Common.ReferenceCount)); |
| |
| /* |
| * Decrement the reference count, and only actually delete the object |
| * if the reference count becomes 0. (Must also decrement the ref count |
| * of all subobjects!) |
| */ |
| (void) AcpiUtUpdateObjectReference (Object, REF_DECREMENT); |
| return_VOID; |
| } |
| |
| |