Is there a way to disable calls to Runtime.checkRestricted on the GAE Java development server under Eclipse?-Collection of common programming errors

I’m one of those guys who step through their code a lot during development. Beginning with version 1.6.4 of the GAE Java development server, the server has been instrumented with calls to a function named Runtime.checkRestricted. This causes two inconveniences when I step through my code:

1. Whenever I step into a function, the debugger goes into the function Runtime.checkRestricted (for which there is no source code) at least once, often multiple times.
2. Whenever I step over a function call which has a large call tree underneath, it takes a very long time for the debugger to come back. (That’s always a problem in the Eclipse Java debugger, but now it’s really bad.)

For me, all this causes a serious drain on productivity. Is there any way to disable this instrumentation, or at least to prevent the debugger from stepping into it? I am using Eclipse with the GAE plugin.

Add a step filter to filter out all step breakpoints you are not interested in. The Eclipse documention provides a guide how to set up step filter.

In your specific case, you will want to add a package filter for com.google.appengine.tools.development.* , as this package and its subpackages contain GAE’s Runtime class and RuntimeHelper class. Finally, don’t forget to activate the option “Use Step Filters” (Shift + F5).