问题描述
在我要使用仪器跟踪时间的功能之一中，有以下代码行.当我通过仪器在模拟器上运行该应用程序时，使用os_signpost的测量时间就会显示出来，并且我可以准确地测量出我需要的东西.
I have the following lines of code in one of the functions I want to track time for, using instruments. When I run the app on simulator from instruments, the measured times with os_signpost do show up and I can accurately measure what I need.
然后我切换到设备，输入相同的代码.但是，由于它在设备上运行，因此不会显示测量的时间.它只显示以下内容:
Then I switch to device, same code. However, as it runs on device instruments does not show the measured times. It only show this:
os_signpost时间根本不显示.
the os_signpost times do not show up at all.
因此，所有功能都可以在模拟器上很好地工作，但是当我切换到iPhone设备时却不能.
So, all works great on simulator, but not when I switch to my iPhone device.
有什么主意吗?
let spid = OSSignpostID(log: SignpostLog.myLog, object: myObj as AnyObject)
defer { os_signpost(.end, log: SignpostLog.myLog, name: "operation1", signpostID: spid) }
os_signpost(.begin, log: SignpostLog.myLog, name: "operation1", signpostID: spid)
推荐答案
确保未通过环境变量禁用OS_ACTIVITY_MODE(请参见下面的屏幕截图)
Make sure you did not disable OS_ACTIVITY_MODE via an environment variable (see screenshot below)
我删除了它，一切正常=)
I removed it and everything worked =)
这篇关于os_signpost在模拟器上有效，但在设备上运行时无效的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！