我的cpu核心数量，电脑识别的少了一半，请问大神怎么解决？

Posted 2023-05-10

i7 4720hq，4核8线程，任务管理器只有4个线程，msconfig 里面高级设置也只有4个处理器，咋搞呢，怪不得平时有点卡，系统是win10企业版

关于您所询问的CPU的核心数，电脑识别少了一半，有可能是因为您的驱动程序或者说操作系统没有正常的识别相关硬件信息 参考技术A 优先检查主板Bios设置,是否关闭了部分CPU核心,是否关闭了超线程功能(不会看这些,就直接拔电源线,扣主板电池,等1分钟后再恢复原样,主板BIOS会自动恢复出厂设置)。 参考技术B CPU核心数量电脑识别的时候少了一半的话，那么可能是因为你的这个电脑识别出现了问题，所以才会导致你的CPU核心数量减少。 参考技术C 你的碎片又核心数量 电脑识别的少了一半几篇怎么解决 那你重新刷下机看看有没有用

核心数据-[Decodable.Address initWithCoder:]：发送到实例的无法识别的选择器

【中文标题】核心数据-[Decodable.Address initWithCoder:]：发送到实例的无法识别的选择器

【英文标题】：Core data -[Decodable.Address initWithCoder:]: unrecognised selector sent to instance

【发布时间】：2018-06-14 06:30:06

【问题描述】：

我已经用 swift Codable 实现了 JSON 解析并用 Coredata 存储它。我的代码在存储 JSON 和获取没有“可转换”属性的实体时工作正常。但是如果它的任何属性是可转换的，那么获取实体会失败并崩溃并显示以下日志。如果是自定义对象，我需要保留可转换属性。看看下面的核心数据模型类并为我的实现获取请求。 控制台日志：

-[Decodable.Address initWithCoder:]: unrecognized selector sent to 
instance 0x600000464c40

2018-06-14 11:26:52.768499+0530 Decodable[7870:2988621] [error] error: 
  exception handling request: <NSSQLFetchRequestContext: 0x600000381fb0> 
  , -[Decodable.Address initWithCoder:]: unrecognized selector sent to 
  instance 0x600000464c40 with userInfo of (null)

CoreData: error: exception handling request: 
  <NSSQLFetchRequestContext: 0x600000381fb0> , -[Decodable.Address 
  initWithCoder:]: unrecognized selector sent to instance 0x600000464c40 
  with userInfo of (null)

2018-06-14 11:26:52.777634+0530 Decodable[7870:2988621] *** 
  Terminating app due to uncaught exception 
  'NSInvalidArgumentException', reason: '-[Decodable.Address 
  initWithCoder:]: unrecognized selector sent to instance 
  0x600000464c40'

ViewController.swift

 let request = NSFetchRequest<Clinic>(entityName: "Clinic")
 request.returnsObjectsAsFaults = true

    do
    
   managedObjectContext = appDelegate.persistentContainer.viewContext

   let result = try managedObjectContext.fetch(request)//***Crashes!!
    
    catch
    
        print("no record found")
    

诊所+CoreDataClass.swift

import Foundation
import CoreData

public class Clinic: NSManagedObject, NSCoding 


public func encode(with aCoder: NSCoder) 

    aCoder.encode(address, forKey: ClinicCodingKeys.address.rawValue)
  // also encode other class attributes


public required convenience init?(coder aDecoder: NSCoder) 

    let appDelegate = UIApplication.shared.delegate as! AppDelegate

    guard let contextUserInfoKey = CodingUserInfoKey.context,
        let managedObjectContext = 
appDelegate.persistentContainer.viewContext as? 
NSManagedObjectContext,
        let entityDescription = 
NSEntityDescription.entity(forEntityName:"Clinic", in: 
managedObjectContext) else   fatalError()  
    self.init(entity: entityDescription, insertInto: 
appDelegate.persistentContainer.viewContext)

    self.address = aDecoder.decodeObject(forKey: 
ClinicCodingKeys.address.rawValue) as? Address
 //*** Also decode other attributes


public override func encode(to encoder: Encoder) throws 
    var container = encoder.container(keyedBy: ClinicCodingKeys.self)

    try container.encode(remoteid , forKey: .remoteid)
    try container.encode(landline ?? "" , forKey: .landline)
    try container.encode(name ?? "", forKey: .name)
    try container.encode(address , forKey: .address)
    try container.encode(mobile ?? "", forKey: .mobile)
    try container.encode(email ?? "", forKey: .email)



public required convenience init(from decoder: Decoder) throws 

    guard let contextUserInfoKey = CodingUserInfoKey.context,
        let managedObjectContext = 
    decoder.userInfo[contextUserInfoKey] as? NSManagedObjectContext,
        let entity = 
    NSEntityDescription.entity(forEntityName:"Clinic", in: 
    managedObjectContext) else   fatalError()  

    self.init(entity: entity, insertInto: managedObjectContext)
    let values = try decoder.container(keyedBy: ClinicCodingKeys.self)

    remoteid = try values.decode(Int16.self, forKey: .remoteid)
    landline = try values.decode(String.self, forKey: .landline)
    name = try values.decode(String.self, forKey: .name)
    address = try values.decode(Address.self, forKey: .address)
    mobile = try values.decode(String.self, forKey: .mobile)
    email = try values.decode(String.self, forKey: .email)

诊所+CoreDataProperties.swift

import Foundation
import CoreData


extension Clinic: Codable 

@nonobjc public class func fetchRequest() -> NSFetchRequest<Clinic> 
    return NSFetchRequest<Clinic>(entityName: "Clinic")


@NSManaged public var remoteid: Int16
@NSManaged public var landline: String?
@NSManaged public var name: String?
@NSManaged public var address: Address?//***** Transformable attribute 
    //for core data model class Address
@NSManaged public var mobile: String?
@NSManaged public var email: String?

enum ClinicCodingKeys: String, CodingKey 
    case remoteid = "_id"
    case landline
    case name
    case address
    case mobile
    case email

地址+CoreDataClass.swift

import Foundation
import CoreData


public class Address: NSManagedObject 


public func encode(to encoder: Encoder) throws 
    var container = encoder.container(keyedBy: CodingKeys.self)
    try container.encode(address ?? "" , forKey: .address)
    try container.encode(area ?? "" , forKey: .area)
    try container.encode(postalcode ?? "" , forKey: .postalcode)
    try container.encode(city ?? "" , forKey: .city)
    try container.encode(state ?? "" , forKey: .state)
    try container.encode(country ?? "" , forKey: .country)
    try container.encode(lat ?? "" , forKey: .lat)
    try container.encode(lng ?? "" , forKey: .lng)


public required convenience init(from decoder: Decoder) throws 

    guard let contextUserInfoKey = CodingUserInfoKey.context,
        let managedObjectContext = 
decoder.userInfo[contextUserInfoKey] as? NSManagedObjectContext,
        let entity = 
NSEntityDescription.entity(forEntityName:"Address", in: 
managedObjectContext) else   fatalError()  

    self.init(entity: entity, insertInto: managedObjectContext)
    let values = try decoder.container(keyedBy: CodingKeys.self)
    address = try values.decode(String.self, forKey: .address)
    area = try values.decode(String.self, forKey: .area)
    postalcode = try values.decode(String.self, forKey: .postalcode)
    city = try values.decode(String.self, forKey: .city)
    state = try values.decode(String.self, forKey: .state)
    country = try values.decode(String.self, forKey: .country)
    lat = try values.decode(String.self, forKey: .lat)
    lng = try values.decode(String.self, forKey: .lng)

地址+CoreDataProperties.swift

import Foundation
import CoreData

extension Address : Codable

@nonobjc public class func fetchRequest() -> NSFetchRequest<Address> 
    return NSFetchRequest<Address>(entityName: "Address")


@NSManaged public var address: String?
@NSManaged public var area: String?
@NSManaged public var postalcode: String?
@NSManaged public var city: String?
@NSManaged public var state: String?
@NSManaged public var country: String?
@NSManaged public var lat: String?
@NSManaged public var lng: String?

enum CodingKeys: String, CodingKey

    case address
    case area
    case postalcode = "postal_code"
    case city
    case state
    case country
    case lat
    case lng

我尝试在 Clinic+CoreDataClass.swift 中实现 initWithCoder: 但它给出了错误 - 无法调用 initWith(entity: insertInto:)。我需要实现 initwith(entity: insertinto:)

【问题讨论】：

你也可以发布地址的实现吗？

@RohanBhale 添加了 Model 类“Address”的代码。

这里也实现了 NSCoding 协议。这些无法识别的选择器错误属于 NSCoding 协议的缺失方法

但是 Codable 是我们替换旧的 NSCoding 所得到的（检查 [medium.com/if-let-swift-programming/…）。我已经实现了 Codable 。那么为什么需要 NSCoding 协议。当模型类/实体中没有可转换的属性时，同样的实现可以正常工作。那里没有实现 NSCoding 协议。但是当自定义对象作为属性类型传递时（这里是 Clinic+CoreDataProperties.swift 中的“地址”），它会崩溃。

Codable 是 Swift 定义的东西。 CoreData 是使用 objc 运行时开发的。 Codable 可以很好地解析东西。为了保存数据，您需要使用 NSCoding 协议。如果您仔细观察，甚至编码和解码的方法定义都不同

【参考方案1】：

您错误地获取它NSFetchRequest<Clinic>(entityName: "Clinic")，并且在保存到结果变量之前您没有检查实体记录。

  let request = NSFetchRequest<Clinic>(entityName: "Clinic")
     request.returnsObjectsAsFaults = true

        do
        
       managedObjectContext = appDelegate.persistentContainer.viewContext

       let result = try managedObjectContext.fetch(request)//***Crashes!!
        
        catch
        
            print("no record found")
        

将您的代码替换为fetchData() 函数并确保实体名称相同。

func fetchData()   
            let appDelegate = UIApplication.shared.delegate as! AppDelegate
            let context = appDelegate.persistentContainer.viewContext
            let fetchRequest = NSFetchRequest<NSFetchRequestResult>(entityName: "Clinic")
            do
                 let records = try context.fetch(fetchRequest)

                if let records = records as? [NSManagedObject]
                    if !records.isEmpty
                        var result:[NSManagedObject] = records
                        print("coreData result : \(records)")
                    else
                       print("No record in Clinic entity")
                    

                

            catch
                print("Error")
            
        

【讨论】：

用你的“fetch”代码替换后，仍然在同一行 context.fetch(fetchRequest) 上使用相同的日志崩溃。

见问题顶部。我得到的日志与我提出的问题相同。

@Shirish 确保诊所是实体名称并将数据正确保存在核心数据中。我认为问题可能与实体名称有关。

是的，名为“Clinic”的实体存在并且正在完美保存。其他没有“可转换”类型属性的实体在获取时工作正常。这里诊所（以及其他实体！）具有“可变形”类型属性的实体，用于获取崩溃。对于可转换的实体地址，我设置了类型“地址”（另一个模型类）。

@Shirish 我也面临同样的崩溃你有解决方案吗？