Notification-Oriented Programming Language and Compiler

NOCA — A Notification-Oriented Computer Architecture: Prototype and Simulator

“…A system developed according to the NOP, referred to as a NOP system, comprises a set of logical-causal and factualexecutional entities declaratively defined by the designer. These entities collaborate by means of very precise notifications among them, thereby defining an innovative inference process that is distinct from those used in IP and DP [7], [11], [16].…”

“…In short, in NOI, for each change in the state of each Attribute of an FBE, this Attribute precisely notifies its concerned Premises, which perform their logical operation, thereby updating their states. Also, for each change in the state of each Premise, this Premise precisely notifies its concerned Conditions, which perform their logical-causal calculation, thereby updating their state [7], [11], [16].…”

“…Once a Rule is activated, this results in the execution of its Action. Upon execution, the Action notifies its connected Instigations, which, in turn, are responsible for notifying the corresponding Methods and triggering their execution [7], [11], [16].…”

“…These approaches include: NOP frameworks (in C++, C#, Java. and Elixir), allowing the implementation of NOP software, for von Neumann architecture, using typical OOP abstractions such as classes and objects, but now under notification approach of-course [16], [18]; prototype of a language and compiler called NOPL, for von Neumann architecture, that allow generating low-level language, namely C/C++, but under the NOP background [16]; circuit templates called NOP Digital Hardware (DH), afterward associated with new version of NOPL that allow the high-level implementation, in total conformance with NOP principles, of a determined application in reconfigurable hardware [13]; and a NOP co-processor (CoNOP), which is based on NOP-DH and can be reconfigured for a determined application, thereby allowing the hybrid execution of the NOP inference process in collaboration with a von Neumann core [17], [20].…”

“…Even so, the results present performance improvements when compared to usual C++ imperative implementation and CLIPs/Rete declarative implementation, and these performance improvements are even increased when running the C++ framework as a fine-grained multithreaded application in a multicore system [7]. Nevertheless, in order to minimize such aforementioned overhead, in each core, some effort has been employed in developing a NOP language/compiler prototype to generate C/C++ source code specific for each NOP application, therefore optimizing and simplifying the use of the data structures [16].…”