International Business Machines Corporation

Mike Wulkan

Harm Sluiman

David P Olshefski

Ian Hugh Carmichael

Eduardus Antonius Theodorus Merks

A data structure for exchanging profiling data in the form of trace elements between collection agents and analysis agents in a profiling tool, wherein the data structure comprises elements for identifying fragments, and attributes defining a logical hierarchy between the trace elements. A system is also set forth for providing access to profiling data of an application over an network, comprising a profiling interface for transmitting event data from the application, a collection agent for receiving and encoding the event data in trace element fragments each containing at least one attribute, and in response transmitting the fragments over the network, and at least one analysis client for receiving and collating the fragments in accordance with the at least one attribute.

Method of providing open access to application profiling data

A mechanism for setting a conditional breakpoint on all methods called by a specific instance of a class. To set the instance breakpoint, the debugger determines all of the methods that can be applied to the object type or class. In an environment in which full debugging information includes the correspondence between virtual function tables and specific classes, and full class hierarchy information, the methods are located by locating the pointer to the type's virtual function table, and from the virtual function table, locating the specific class in the debugging information. Identifying the specific type permits all of the base classes of the type to be identified in the debugging information, and from the class hierarchy information, all methods for objects of the type can be compiled. The debugger then sets a conditional breakpoint on each method, the condition specifying that the breakpoint should cause program execution to automatically stop only if the method is being called for the particular object or instance for which the instance breakpoint was set.

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Markham, Canada

Mike Wulkan