Thread 2: EXC_BAD_INSTRUCTION (code=EXC_I386_INVOP, subcode=0x0)

[Pace.Z]

使用 concurrent queue 做promis函数，崩溃了

Context and Description

Environment Details

• coobjc version: coswift 1.1.2
• iOS version: iOS 12
• Xcode version: 10.1
• Other informations:

code

class CoobjcDemoViewController: BaseViewController {
    override func viewDidLoad() {
        super.viewDidLoad()
        co_launch {
            let result = try await(closure: { () -> Promise<String> in
                self.asyncFunc(name: "Han MeiMei")
            })
            switch result {
            case .fulfilled(let name):
                print(name)
            case .rejected(let error):
                print(error)
            }
        }
    }
    
    func asyncFunc(name: String) -> Promise<String> {
        let promise = Promise<String>()
        DispatchQueue.init(label: "concurrent queue", attributes: .concurrent).async {
            print("current: \(name), thread: \(Thread.current)")
            promise.fulfill(value: "Li Lei")
        }
        promise.onCancel { (_) in
            
        }
        return promise
    }
}

多次�快速进入这个VC的时候，就会崩溃掉

method call stacks

[fengnianji]

It's indeed a problem, we designed require serial queue for now.

[Pace.Z]

@NianJi

serial queue has the same problem

eg:

• source code

    override func viewDidLoad() {
        super.viewDidLoad()
        co_launch {
            let result = try await(closure: { () -> Promise<String> in
                self.asyncFunc(name: "Han MeiMei")
            })
            switch result {
            case .fulfilled(let name):
                print(name)
            case .rejected(let error):
                print(error)
            }
        }
    }
    
    func asyncFunc(name: String) -> Promise<String> {
        let promise = Promise<String>()
        DispatchQueue.init(label: "serial queue").async {
            print("serial: \(name), thread: \(Thread.current)")
            promise.fulfill(value: "Li Lei")
        }
        promise.onCancel { (_) in
            
        }
        return promise
    }

• crash at

call stack