Ios JavaScriptCore崩溃

我在iOS 9.3上使用多线程的JavaScriptCore。所有线程共享一个JSContext。该应用程序有时会崩溃。有人知道发生了什么事吗

func callFunction(function:String, date:NSDate, dataConfiguration:CDTimePeriodConfiguration, viz:CDViz, didFinish:((response:[String:AnyObject]?, error:NSError?) -> Void)?){

    guard let jsonString = self.jsonString(self.apiOptions(date, dataConfiguration: dataConfiguration, viz: viz)) else{
        let error = Error.errorWithCode(.ParametersMissing, failureReason: "Cannot create Rocket APIOptions")
        didFinish?(response: nil, error: error)
        return
    }

    let randomCallBackFunctionName = "callBackFromJS\(Int64(NSDate().timeIntervalSince1970 * 1000))\(random() % 100000)"

    let callBackClosure:  @convention(block) (response: [String:AnyObject]?, error: String?) -> Void = {
        [weak self]
        (response: [String:AnyObject]?, error: String?) -> Void in

        var errorMessage:String? = error

        if error == "null"{
            errorMessage = nil
        }

        dispatch_async(dispatch_get_main_queue()) {
            if let response = response where errorMessage == nil{
                didFinish?(response: response, error: nil)
            }
            else{

                if errorMessage == nil && response == nil{
                    errorMessage = "No reponse from Rocket"
                }

                let error = Error.errorWithCode(.RocketError, failureReason: errorMessage ?? "Rocket failed for unknown reason")
                didFinish?(response: response, error: error)
                self?.context.setObject(nil, forKeyedSubscript: randomCallBackFunctionName)
            }
        }
    }

    context.setObject(unsafeBitCast(callBackClosure, AnyObject.self), forKeyedSubscript: randomCallBackFunctionName)

    let js = "var options = \(jsonString) ; Rocket.\(function)(options).then(function(res) { \(randomCallBackFunctionName)(res, null); }).catch(function(err) { \(randomCallBackFunctionName)(null, err); })"
    self.context.evaluateScript(js)
}

---

0 JavaScriptCore 0x000000018533f3d0 JSC:：JSLock:：lock（长）+28
1 JavaScriptCore 0x00000001850453f4 JSC:：JSLockHolder:：JSLockHolder（JSC:：VM&）+48
2 WebCore 0x0000000185e079a0 WebCore:：JSGlobalObjectCallback:：call（）+64
3 WebCore 0x0000000185aa3dd8标准：：u 1:：u函数：：u func:：operator（）（）+116
4 JavaScriptCore 0x0000000184f35540 WTF:：callFunctionObject（void*）+28
5 JavaScriptCore 0x0000000184f354c0 WTF:：dispatchFunctionsFromMainThread（）+240
6基金会0x000 000 01826A7E20
7 CoreFoundation 0x0000000181c9cefc\uuuu CFRUNLOOP\u正在调用\uu OUT\u以执行\uu函数\uuuuu+20
8 CoreFoundation 0x0000000181c9c990\uu CFRunLoopDoSources0+536
9 CoreFoundation 0x0000000181c9a690\uuu CFRunLoopRun+720
10 CoreFoundation 0x0000000181bc9680 CFRunLoopRunSpecific+380
11 WebCore 0x0000000185779998运行WebThread（void*）+452
12 libsystem_pthread.dylib 0x000000018194fb28_pthread_body+152
13 libsystem_pthread.dylib 0x000000018194fa8c_pthread_start+152
14 libsystem_pthread.dylib 0x000000018194d028 thread_start+0

尝试在一个线程中调用每个与JSContext相关的方法和函数：

创建调度队列：

my_queue = dispatch_queue_create("com.example.subsystem.taskXYZ", NULL);

调用方法和函数：

...
// Sync call
dispatch_sync(my_queue) {
     ...
}

// Async call
dispatch_async(my_queue) {
    ....
}

---

尝试在一个线程中调用每个与JSContext相关的方法和函数：

创建调度队列：

my_queue = dispatch_queue_create("com.example.subsystem.taskXYZ", NULL);

调用方法和函数：

...
// Sync call
dispatch_sync(my_queue) {
     ...
}

// Async call
dispatch_async(my_queue) {
    ....
}