The devel::stacktrace module contains two classes, devel::stacktrace and devel::stacktraceframe. the goal of this object is to encapsulate the information that can found through using the caller() function, as well as providing a simple interface to this data.

the devel::stacktrace object contains a set of devel::stacktraceframe objects, one for each level of the stack. the frames contain all the data available from caller().