utdelete.c File Reference

#include "acpi.h"
#include "accommon.h"
#include "acinterp.h"
#include "acnamesp.h"
#include "acevents.h"

Include dependency graph for utdelete.c:

Go to the source code of this file.

Macros
#define	_COMPONENT   ACPI_UTILITIES

Functions
static void	AcpiUtDeleteInternalObj (ACPI_OPERAND_OBJECT *Object)
static void	AcpiUtUpdateRefCount (ACPI_OPERAND_OBJECT *Object, UINT32 Action)
void	AcpiUtDeleteInternalObjectList (ACPI_OPERAND_OBJECT **ObjList)
ACPI_STATUS	AcpiUtUpdateObjectReference (ACPI_OPERAND_OBJECT *Object, UINT16 Action)
void	AcpiUtAddReference (ACPI_OPERAND_OBJECT *Object)
void	AcpiUtRemoveReference (ACPI_OPERAND_OBJECT *Object)

Macro Definition Documentation

_COMPONENT

#define _COMPONENT   ACPI_UTILITIES

Definition at line 51 of file utdelete.c.

Function Documentation

AcpiUtAddReference()

void AcpiUtAddReference

(

ACPI_OPERAND_OBJECT *

Object

)

Definition at line 752 of file utdelete.c.

{
 
    ACPI_FUNCTION_NAME (UtAddReference);
 
 
    /* Ensure that we have a valid object */
 
    if (!AcpiUtValidInternalObject (Object))
    {
        return;
    }
 
    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;
}

Referenced by AcpiDsBuildInternalPackageObj(), AcpiDsDoImplicitReturn(), AcpiDsExecEndOp(), AcpiDsMethodDataGetValue(), AcpiDsMethodDataSetValue(), AcpiEvAttachRegion(), AcpiExOpcode_1A_0T_1R(), AcpiExOpcode_1A_1T_1R(), AcpiExOpcode_2A_1T_1R(), AcpiExPrepFieldValue(), AcpiExResolveNodeToValue(), AcpiExResolveObjectToValue(), AcpiExStoreObjectToIndex(), AcpiInstallNotifyHandler(), AcpiNsAttachObject(), AcpiNsConvertToReference(), AcpiNsResolveReferences(), and AcpiUtCopySimpleObject().

AcpiUtDeleteInternalObj()

static void AcpiUtDeleteInternalObj ( ACPI_OPERAND_OBJECT *  Object )

static

Definition at line 80 of file utdelete.c.

{
    void                    *ObjPointer = NULL;
    ACPI_OPERAND_OBJECT     *HandlerDesc;
    ACPI_OPERAND_OBJECT     *SecondDesc;
    ACPI_OPERAND_OBJECT     *NextDesc;
    ACPI_OPERAND_OBJECT     *StartDesc;
    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);
        }
 
        ACPI_FALLTHROUGH;
 
    case ACPI_TYPE_PROCESSOR:
    case ACPI_TYPE_THERMAL:
 
        /* Walk the address 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;
        }
 
        if (Object->Method.Node)
        {
            Object->Method.Node = NULL;
        }
        break;
 
    case ACPI_TYPE_REGION:
 
        ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS,
            "***** Region %p\n", Object));
 
        /*
         * Update AddressRange list. However, only permanent regions
         * are installed in this list. (Not created within a method)
         */
        if (!(Object->Region.Node->Flags & ANOBJ_TEMPORARY))
        {
            AcpiUtRemoveAddressRange (Object->Region.SpaceId,
                Object->Region.Node);
        }
 
        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;
                StartDesc = NextDesc;
                LastObjPtr = &HandlerDesc->AddressSpace.RegionList;
 
                /* Remove the region object from the handler list */
 
                while (NextDesc)
                {
                    if (NextDesc == Object)
                    {
                        *LastObjPtr = NextDesc->Region.Next;
                        break;
                    }
 
                    /* Walk the linked list of handlers */
 
                    LastObjPtr = &NextDesc->Region.Next;
                    NextDesc = NextDesc->Region.Next;
 
                    /* Prevent infinite loop if list is corrupted */
 
                    if (NextDesc == StartDesc)
                    {
                        ACPI_ERROR ((AE_INFO,
                            "Circular region list in address handler object %p",
                            HandlerDesc));
                        return_VOID;
                    }
                }
 
                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);
        }
        if (Object->Field.InternalPccBuffer)
        {
            ACPI_FREE(Object->Field.InternalPccBuffer);
        }
 
        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;
 
    case ACPI_TYPE_LOCAL_ADDRESS_HANDLER:
 
        ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS,
            "***** Address handler %p\n", Object));
 
        AcpiOsDeleteMutex (Object->AddressSpace.ContextMutex);
        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_RAW ((ACPI_DB_ALLOCATIONS, "%s: Deleting Object %p [%s]\n",
        ACPI_GET_FUNCTION_NAME, Object, AcpiUtGetObjectTypeName (Object)));
 
    AcpiUtDeleteObjectDesc (Object);
    return_VOID;
}

Referenced by AcpiUtUpdateRefCount().

AcpiUtDeleteInternalObjectList()

void AcpiUtDeleteInternalObjectList

(

ACPI_OPERAND_OBJECT **

ObjList

)

Definition at line 384 of file utdelete.c.

{
    ACPI_OPERAND_OBJECT     **InternalObj;
 
 
    ACPI_FUNCTION_ENTRY ();
 
 
    /* 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;
}

Referenced by AcpiEvaluateObject().

AcpiUtRemoveReference()

void AcpiUtRemoveReference

(

ACPI_OPERAND_OBJECT *

Object

)

Definition at line 790 of file utdelete.c.

{
 
    ACPI_FUNCTION_NAME (UtRemoveReference);
 
 
    /*
     * 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;
    }
 
    /* Ensure that we have a valid object */
 
    if (!AcpiUtValidInternalObject (Object))
    {
        return;
    }
 
    ACPI_DEBUG_PRINT_RAW ((ACPI_DB_ALLOCATIONS,
        "%s: Obj %p Current Refs=%X [To Be Decremented]\n",
        ACPI_GET_FUNCTION_NAME, 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;
}

Referenced by AcpiDsBuildInternalBufferObj(), AcpiDsBuildInternalObject(), AcpiDsBuildInternalPackageObj(), AcpiDsCallControlMethod(), AcpiDsClearImplicitReturn(), AcpiDsClearOperands(), AcpiDsCreateBufferField(), AcpiDsCreateNode(), AcpiDsDeleteResultIfNotUsed(), AcpiDsEvalBankFieldOperands(), AcpiDsEvalDataObjectOperands(), AcpiDsEvalRegionOperands(), AcpiDsEvalTableRegionOperands(), AcpiDsEvaluateNamePath(), AcpiDsExecEndControlOp(), AcpiDsGetFieldNames(), AcpiDsGetPredicateValue(), AcpiDsInitBufferField(), AcpiDsLoad2EndOp(), AcpiDsMethodDataDeleteValue(), AcpiDsObjStackPopAndDelete(), AcpiDsResolvePackageElement(), AcpiDsRestartControlMethod(), AcpiDsStoreObjectToLocal(), AcpiEvaluateObject(), AcpiEvDetachRegion(), AcpiEvExecuteRegMethod(), AcpiEvInstallSpaceHandler(), AcpiExCreateEvent(), AcpiExCreateMethod(), AcpiExCreateMutex(), AcpiExCreatePowerResource(), AcpiExCreateProcessor(), AcpiExCreateRegion(), AcpiExDoConcatenate(), AcpiExDoLogicalOp(), AcpiExLoadOp(), AcpiExLoadTableOp(), AcpiExOpcode_0A_0T_1R(), AcpiExOpcode_1A_0T_1R(), AcpiExOpcode_1A_1T_1R(), AcpiExOpcode_2A_0T_1R(), AcpiExOpcode_2A_1T_1R(), AcpiExOpcode_2A_2T_1R(), AcpiExOpcode_3A_1T_1R(), AcpiExOpcode_6A_0T_1R(), AcpiExPrepFieldValue(), AcpiExReadDataFromField(), AcpiExResolveMultiple(), AcpiExResolveObjectToValue(), AcpiExResolveOperands(), AcpiExStoreDirectToNode(), AcpiExStoreObjectToIndex(), AcpiExStoreObjectToObject(), AcpiGetSleepTypeData(), AcpiInstallGpeBlock(), AcpiInstallMethod(), AcpiInstallNotifyHandler(), AcpiNsDeleteNode(), AcpiNsDetachData(), AcpiNsDetachObject(), AcpiNsEvaluate(), AcpiNsExecuteTable(), AcpiNsRemoveElement(), AcpiNsRepair_CID(), AcpiNsRepair_FDE(), AcpiNsRepair_HID(), AcpiNsResolveReferences(), AcpiNsRootInitialize(), AcpiNsSearchAndEnter(), AcpiNsSimpleRepair(), AcpiPsParseAml(), AcpiRemoveAddressSpaceHandler(), AcpiRemoveNotifyHandler(), AcpiRsGetAeiMethodData(), AcpiRsGetCrsMethodData(), AcpiRsGetMethodData(), AcpiRsGetPrsMethodData(), AcpiRsGetPrtMethodData(), AcpiRsSetSrsMethodData(), AcpiUtCopyEpackageToIpackage(), AcpiUtCopyEsimpleToIsimple(), AcpiUtCopyIelementToIelement(), AcpiUtCopyIobjectToIobject(), AcpiUtCopyIpackageToIpackage(), AcpiUtCreateBufferObject(), AcpiUtCreateStringObject(), AcpiUtDeleteInternalObj(), AcpiUtDeleteInternalObjectList(), AcpiUtEvaluateNumericObject(), AcpiUtEvaluateObject(), AcpiUtExecute_CID(), AcpiUtExecute_CLS(), AcpiUtExecute_HID(), AcpiUtExecute_STA(), AcpiUtExecute_UID(), AcpiUtExecutePowerMethods(), and AcpiUtOsiImplementation().

AcpiUtUpdateObjectReference()

ACPI_STATUS AcpiUtUpdateObjectReference	(	ACPI_OPERAND_OBJECT *	Object,
		UINT16	Action
	)

Definition at line 548 of file utdelete.c.

{
    ACPI_STATUS             Status = AE_OK;
    ACPI_GENERIC_STATE      *StateList = NULL;
    ACPI_OPERAND_OBJECT     *NextObject = NULL;
    ACPI_OPERAND_OBJECT     *PrevObject;
    ACPI_GENERIC_STATE      *State;
    UINT32                  i;
 
 
    ACPI_FUNCTION_NAME (UtUpdateObjectReference);
 
 
    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 (AE_OK);
        }
 
        /*
         * All sub-objects must have their reference count updated
         * 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)
             * Two lists, system and device notify handlers.
             */
            for (i = 0; i < ACPI_NUM_NOTIFY_TYPES; i++)
            {
                PrevObject = Object->CommonNotify.NotifyList[i];
                while (PrevObject)
                {
                    NextObject = PrevObject->Notify.Next[i];
                    AcpiUtUpdateRefCount (PrevObject, Action);
                    PrevObject = NextObject;
                }
            }
            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++)
            {
                /*
                 * Null package elements are legal and can be simply
                 * ignored.
                 */
                NextObject = Object->Package.Elements[i];
                if (!NextObject)
                {
                    continue;
                }
 
                switch (NextObject->Common.Type)
                {
                case ACPI_TYPE_INTEGER:
                case ACPI_TYPE_STRING:
                case ACPI_TYPE_BUFFER:
                    /*
                     * For these very simple sub-objects, we can just
                     * update the reference count here and continue.
                     * Greatly increases performance of this operation.
                     */
                    AcpiUtUpdateRefCount (NextObject, Action);
                    break;
 
                default:
                    /*
                     * For complex sub-objects, push them onto the stack
                     * for later processing (this eliminates recursion.)
                     */
                    Status = AcpiUtCreateUpdateStateAndPush (
                        NextObject, Action, &StateList);
                    if (ACPI_FAILURE (Status))
                    {
                        goto ErrorExit;
                    }
                    break;
                }
            }
 
            NextObject = NULL;
            break;
 
        case ACPI_TYPE_BUFFER_FIELD:
 
            NextObject = Object->BufferField.BufferObj;
            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_LOCAL_REGION_FIELD:
        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 (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 (Status);
}

Referenced by AcpiPsUpdateParameterList(), AcpiUtAddReference(), and AcpiUtRemoveReference().

AcpiUtUpdateRefCount()

static void AcpiUtUpdateRefCount ( ACPI_OPERAND_OBJECT *  Object, UINT32  Action  )

static

Definition at line 421 of file utdelete.c.

{
    UINT16                  OriginalCount;
    UINT16                  NewCount = 0;
    ACPI_CPU_FLAGS          LockFlags;
    char                    *Message;
 
 
    ACPI_FUNCTION_NAME (UtUpdateRefCount);
 
 
    if (!Object)
    {
        return;
    }
 
    /*
     * Always get the reference count lock. Note: Interpreter and/or
     * Namespace is not always locked when this function is called.
     */
    LockFlags = AcpiOsAcquireLock (AcpiGbl_ReferenceCountLock);
    OriginalCount = Object->Common.ReferenceCount;
 
    /* Perform the reference count action (increment, decrement) */
 
    switch (Action)
    {
    case REF_INCREMENT:
 
        NewCount = OriginalCount + 1;
        Object->Common.ReferenceCount = NewCount;
        AcpiOsReleaseLock (AcpiGbl_ReferenceCountLock, LockFlags);
 
        /* The current reference count should never be zero here */
 
        if (!OriginalCount)
        {
            ACPI_WARNING ((AE_INFO,
                "Obj %p, Reference Count was zero before increment\n",
                Object));
        }
 
        ACPI_DEBUG_PRINT ((ACPI_DB_ALLOCATIONS,
            "Obj %p Type %.2X [%s] Refs %.2X [Incremented]\n",
            Object, Object->Common.Type,
            AcpiUtGetObjectTypeName (Object), NewCount));
        Message = "Incremement";
        break;
 
    case REF_DECREMENT:
 
        /* The current reference count must be non-zero */
 
        if (OriginalCount)
        {
            NewCount = OriginalCount - 1;
            Object->Common.ReferenceCount = NewCount;
        }
 
        AcpiOsReleaseLock (AcpiGbl_ReferenceCountLock, LockFlags);
 
        if (!OriginalCount)
        {
            ACPI_WARNING ((AE_INFO,
                "Obj %p, Reference Count is already zero, cannot decrement\n",
                Object));
            return;
        }
 
        ACPI_DEBUG_PRINT_RAW ((ACPI_DB_ALLOCATIONS,
            "%s: Obj %p Type %.2X Refs %.2X [Decremented]\n",
            ACPI_GET_FUNCTION_NAME, Object, Object->Common.Type, NewCount));
 
        /* Actually delete the object on a reference count of zero */
 
        if (NewCount == 0)
        {
            AcpiUtDeleteInternalObj (Object);
        }
        Message = "Decrement";
        break;
 
    default:
 
        AcpiOsReleaseLock (AcpiGbl_ReferenceCountLock, LockFlags);
        ACPI_ERROR ((AE_INFO, "Unknown Reference Count action (0x%X)",
            Action));
        return;
    }
 
    /*
     * Sanity check the reference count, for debug purposes only.
     * (A deleted object will have a huge reference count)
     */
    if (NewCount > ACPI_MAX_REFERENCE_COUNT)
    {
        ACPI_WARNING ((AE_INFO,
            "Large Reference Count (0x%X) in object %p, Type=0x%.2X Operation=%s",
            NewCount, Object, Object->Common.Type, Message));
    }
}

Referenced by AcpiUtUpdateObjectReference().