Evan W. Adams

Object Management In A Case Environment

The Sun Network Software Environment (NSE) is a net- work-based object manager for software development. The NSE supports parallel development through an optimistic concurrency control mechanism, in which developers do not acquire locks before modifying objects, Instead, developers copy objects, modify the copies, and merge the modified objects with the originals. Objects managed by the NSE are typed, and the set of types can be extended by tool builders. The NSE is designed to work with heterogeneous implementations and poor communication.

Dbxtool: A window-based symbolic debugger for sun workstations

Dbxtool is a window‐ and mouse‐based debugger for C, Pascal and FORTRAN programs running on Sun workstations. Its use of the mouse as the primary input mechanism eliminates the need to type variables, line numbers, breakpoints and most commands. Its multiple windows provide several qualitatively different perspectives on the debugging problem. Compared to the Unix 4.2 BSD dbx from which it is derived, it has been extended with the abilities to debug multiple‐process programs, already‐running processes, and the Sun Operating System kernel.

SunPro: engineering a practical program development environment

While each of the efforts described above significantly improves some aspect of the programming environment on Sun workstations, it is obvious that todays technology allows us to go further. Thus, in parallel with these short-term and comparatively easy but effective improvements, we continue to explore technologies which are expected to produce larger gains but which are much more expensive to achieve. These include fine-grained incremental compilation integrated with editing and debugging, as exemplified by Fritzsons DICE system [Frit84], and an effort to better integrate version control, configuration management, release building and bug tracking more tightly with each other and with an underlying database.