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_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 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) * 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_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 (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); }
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); }