Is it possible to load other applications in Instruments?

I’d like to use Instruments to peek at some third-party applications on my iPhone, is that possible? If I attac开发者_如何学Pythonh Instruments to some of the applications I develop, everything goes well. But when I try to load some other application, Instruments complain that they can’t “get task for pid XY.” Is that a security measure?

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This is the iPhone telling you that the app you're trying to run won't let the debugger attach to it. Without a debugger attached you can't run Instruments.

This is an intentional security measure, withut hacking the 3rd party apps you will not be able to view them in Instruments.

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Hey.
From Instruments documentation: For your protection, the instrument does not allow you to process any application that is not code-signed with your provisioning profile. This includes any copy that has been downloaded from the iTunes App Store.