A Region-Oriented Hardware Implementation for Membrane Computing Applications

model of an algorithm Abstract model of a as expressed in the hardware circuit as expressed in implementation language a Handel-C program An algorithm that specifies Template algorithm the high-level stages of a transition (e.g., object assignment) Inclusion of object assignment Filling out of for reaction rules with the template algorithm priorities and object production when space-oriented strategy is used Table 2. Illustration of how the Content-Form-Strategy design pattern applies to the problem of generating Handel-C source code for a circuit that implements an input P system according to one of a variety of implementation approaches. The UML class diagram in Figure 9 explains how these ideas are represented in the implementation of P Builder. Figure 8 shows an example of Handel-C source code generated from a tree of processing units. The correspondence between the processing units and code sections is marked in the figure. 412 V. Nguyen, D. Kearney, G. Gioiosa Fig. 8. Illustration of the correspondence between Handel-C source code and a tree of sequential processing units (SPUs), parallel processing units (PPUs) and atomic processing units (APUs). General design for all modules All the modules share the same basic structure. More specifically, each module contains four layers. The top layer is an interface which is exposed to the other modules. The rest of the layers constitute a hierarchy of classes. The second layer is a class that implements general operations for the module. When a client module requests that one of these operations be performed in a certain way, the class returns the specific subclass that implements the operation as requested. The third layer consists of classes responsible for implementing specific overall implementation strategies (the currently available overall implementation strategies are the rule-oriented and region-oriented strategies). The bottom layer consists of classes responsible for implementing resource conflict resolution strategies (the currently available resource conflict resolution strategies are the space-oriented and timeoriented strategies).