various open source projects I used reflection on com.ibm.wala.util.heapTrace.HeapTreacer (this is a heap tracer provided by WALA). My contribution : I used reflection in order to find out information about methods, fields and constructor(s) on this class. I implemented a Logger( not using java.util.Logging ) with Call Stack Introspection and then used Looger calls with HeapTracer to find out information about the perfom method- that initializes the tracing process.