ios - iPhone 6S/iOS 9.1 : Can't find crash log with code 0xdeadfa11

Question

我刚刚发现可以在 iOS 上强制退出卡住的应用程序。根据Technical Note TN2151我应该在我的设备上获得代码为 0xdeadfa11 的崩溃日志，但我没有这样的崩溃日志。

The exception code 0xdeadfa11 indicated that an application has been force quit by the user. Force quits occur when the user first holds down the On/Off button until "slide to power off" appears, then holds down the Home button. It's reasonable to assume that the user has done this because the application has become unresponsive, but it's not guaranteed - force quit will work on any application.

Note: Terminating a suspended app by removing it from the multitasking tray does not generate a crash report. Once an app has suspended, it is eligible for termination by iOS at any time, so no crash report will be generated.

这是一个 apple bug 还是我遗漏了一些额外的步骤？

编辑如果我在强制退出后检查设备控制台，我会看到这个日志:

ReportCrash[2074] : Stackshot code 0xdeadfa11 not tasked,ignoring

似乎无论出于何种原因，iOS 决定不生成 deadfall 崩溃报告。

Answer 1

我尝试在三个设备上生成强制退出:

1)iPad 3 (iOS 8)

2)iPad 空气 (iOS 9.2)

3)iPhone 5 (iOS 9.2.1)

当我在调试时尝试通过 xcode 在所有三个设备上生成崩溃时，没有生成崩溃日志，而是我收到以下错误消息:

Message from debugger: Terminated due to signal 9

我认为这与您的信息相似:

Service exited due to signal: Killed: 9

当我尝试在不调试的情况下生成崩溃并通过设备日志查看日志时，我发现:

1)对于 iPad 3 (iOS 8):生成崩溃日志，附上截图。

2)对于 iPad Air (iOS 9.2):未生成崩溃日志。

3)对于 iPhone 5 (iOS 9.2.1):未生成崩溃日志。

据我了解，当您在调试时尝试通过 xcode 生成强制退出时，它不会生成，如果在您的设备中不直接调试而尝试生成崩溃，则可能是 os (iOS 9) 特定原因.

P.S: Service exited due to signal: Killed: 9 由于内存问题和高 CPU 消耗任务而生成。

希望这对您有进一步的帮助。