Its microarchitecture has been carefully designed to be able to support various types of parallel execution environments. The first part of the system is the processor-based virtual machine. The virtual machine contains a scheduler, an instruction set, and a virtual memory manager. The scheduler is responsible for scheduling instructions into the microcode modules that form the core of the processor.
The processor-based virtual machine uses a virtual branch target (VBT), a virtual instruction pointer (VI Pointer), and a virtual register file (VRB). The instruction pointer is used to control and access the virtual registers.
The VBT and VI Pointer are the only virtual data types that exist in XC programming. These are mapped into hardware by a virtual instruction interpreter (VI/MI). Each virtual instruction consists of two parts. A label, which is simply a name used for the program, is added before the instruction. Next, the instruction is executed.
The second part of a XC programming instruction is the Virtual Memory Manager. This manager maintains the virtual address space of the virtual machine. When a program accesses a virtual memory block, the manager retrieves a virtual memory address from the virtual register file. Then, the manager assigns the virtual address to the program’s virtual memory block. The Virtual Memory Manager keeps track of which virtual address corresponds to which virtual memory block.
To create applications, a programmer needs to compile the code into an executable XC programming program. First, the compiler identifies the functions to be compiled and creates a set of header files. Then, the compiler compiles each of these headers. Finally, it combines the various compiled programs into a single executable XC program. A typical compiled XC program can be used in one of two ways.
If the compiled XC program is to be run in real time (like a web browser), it must have an interpreter. The first type of interpreted program is the JIT compiler (just-in-time compiler). The next type of interpreter is the bytecode compiler. To use either type of interpreter, the compiler must contain a toolchain that is capable of compiling both the JIT compiler and the bytecode compiler.
In its current form, XC programming has a number of tools that enable programmers to use this programming language as a general purpose programming language. An interpreter, a debugger, an IDE, and a host computer running a XC development environment are the most popular tools. The XC runtime library can also be used to help programmers work with some of the more specialized libraries that are available. One can also write custom tools, called plugins, for additional functionality that does not exist in the XC language. Some of the other XC programming tools are not widely available and need to be created and maintained.
The first step in writing a new XC program is to identify the problem that the program needs to solve. Then, the programmer must determine the type of programming language that will solve that problem. If he or she is writing a C application, the programmer must decide whether it will be object-oriented or functional. The programmer must consider the performance characteristics of the language as well. In particular, he or she must consider the cost of data structures and the efficiency with which to access the data structures. The programmer can also use a tool called a programmer’s editor to customize the code to suit his or her specific needs.
In addition, a programmer can write the XC programming language’s test program. The test program provides a control system for the implementation and testing of the XC programming language. In general, it is used by programmers to make sure that the language works well in all its versions.
If the program will be used for server software, the programmer should choose a design that is efficient for servers. Then he or she can create a set of server scripts that will interact with the XC server to send requests to it. Then he or she can create a database to store the application’s configuration. Finally, he or she can create a web server to interact with the server and a web browser to deliver the web pages to the client.
The last step in XC programming is to create a web page that displays the results from the server scripts and the application. A programmer can create a set of web pages that are searchable by a search engine. The pages can be used in a browser.