KR20040057037A - SDL/C language transforming system and method, and its program stored recording medium - Google Patents

Abstract

PURPOSE: An SLD(Specification and Description Language) to C language program conversion system and method is provided to automatically generate a program written in a C language from a program written in an SDL in developing a real time distributed communication program so that it maintains a consistency in a design and an implementation of a system. CONSTITUTION: The system comprises a process(301) and an input queue(302). The process(301) drives a process, written in the SDL, by using a library of a C language. Each process(301) corresponds to the input queue(302) for receiving a signal. The input queue(302) includes a message queue(303) and a save queue(304). The message queue(303) buffers a signal 1 transmitted from an external process. The save queue(304) stores a save signal. The input queue(303) compares parameters taken over by the process(301) in execution, and takes over a proper signal 2 to the process(301).

Description

SDL / C language transforming system and method, and its program stored recording medium}

The present invention relates to a method for converting from a standard description language (hereinafter referred to as SDL) language to a C language and a recording medium on which the program is implemented. More particularly, the present invention relates to a system for developing software for real-time and distributed communication such as an exchange. SD-to-C conversion, which automatically creates programs in C, the implementation language, from the design and specification language, providing developers with an environment for design and implementation consistency and easier software development. A system and method, and a record carrier on which the program is implemented.

Conventional communication software developers design a system using a specification and description language (hereinafter referred to as SDL), which is a specification and description language, in developing an exchange software and the like, and develop a language for implementation based on the SDL. To develop software.

Software development method using the SDL as described above is inconsistent between design and implementation, and problems such as design change does not directly affect the implementation.

In addition, the software development method using SDL uses automatic primitives not supported by the C language such as save signals and remote procedure calls in the automatic translation from SDL to the implementation language C. There is a problem with failing to generate code that has a complete one-to-one correspondence.

The present invention is to solve the above problems, an object of the present invention is to extract and store information about primitives that are not supported by the C language in a program written in the SDL language, each of the information to its own runtime library By matching the function call of C language with C and then creating the program in C language, the user can maintain the consistency from design to implementation, and the partial change in design level such as adding, changing, and deleting functions is meaningful. It is to provide a system and method for converting from SD to C language and a recording medium on which the program is implemented.

Figure 1 shows the hardware configuration of the SD to C conversion system of the embodiment according to the present invention.

FIG. 2 illustrates a software configuration for generating an execution code from the SD to the C in the SD-to-C conversion system using the runtime library according to the embodiment of the present invention.

3 is a flowchart illustrating a method of converting SD to C language according to an embodiment of the present invention.

FIG. 4 illustrates the structure of an input queue and a process having a double queue for processing a save signal of SD in FIG. 3.

FIG. 5 is a flowchart illustrating an internal execution of an input queue for processing SD signals of SD using FIG. 4.

In order to achieve the above object, a feature of the SD-C conversion system according to the present invention is a conversion module for converting a program written in a standard description language (hereinafter referred to as SDL) into a C language, and C Main memory having tools for writing runtime libraries for processing information not mapped directly to the language; A central processing unit that executes programs and executable files of the main memory; And an input / output device for inputting and outputting all messages to the main memory or the central processing unit.

Auxiliary storage device for storing information input and output from the input / output device further comprises. The main memory, central processing unit, and input / output devices are controlled by the Unix operating system.

The conversion module of the main memory includes: an SD analysis unit configured to analyze a program written in the SD to extract and store necessary SD structure information; An SD-elevation unit for analyzing the SD-el structure information stored in the SD-EL analysis unit to store the thought information obtained by separating the information directly mapped to the C language from the SD and the information not directly mapped to the C language; And the information mapped in C language directly from SD through the mapping information stored in the SD mapping unit, and the information not mapped directly in C language in SD includes the functions of the function using the runtime library. It includes a C generator that generates program code in the form of a call.

The C generation unit is driven using a runtime library written in C language that is executed in Linux and Unix operating systems so as to process information that is not mapped in C language directly in the SD.

Each of the processes includes an input queue for receiving a signal, and the input queue includes a message queue for buffering a signal input from an external process, and a save queue for storing a save signal.

The input queue compares the information about the signal passed from the running process as an argument of the function call and returns the appropriate signal to the running process.

Characteristic of the method of converting SD to C language according to the present invention, a) by analyzing the program written in SD in real-time and distributed environment by separating the information that can be directly mapped in C language and information not mapped in C language, respectively. Recording; b) creating a runtime library to process information that is not mapped directly from SD to C language among the information recorded in step a); And c) converting information that is not directly mapped from the SD to the C language to the C language in the form of a function call of the runtime library created in the step b), and directly mapping from the SD to the C language in the step a). The information to be translated directly includes the C language.

In the step c), the step of converting information not directly mapped to the C language from the SD to the C language is performed by the runtime library to process a save signal among the information not mapped directly to the C language from the SD. Input signals consisting of a message queue and a save queue are used to process the save signal and the normal signal input, respectively.

The processing of the save signal and the general signal input using the input queue may include: a) calling a function into the input queue with information on the input signal and the save signal as arguments in order to receive an input signal by a running process; ; B) if a save signal list exists in the information obtained through the step a) in the input queue, checking whether the front message of the message queue matches the save signal information; C) when the front message of the message queue and the save signal information coincide in step b), the input queue extracts the front message of the message queue and stores it in the save queue; And d) if a message other than the message stored in the save queue is present in the save queue, the front message of the save queue is returned, and if there is no other message in the save queue, the front queue of the message is returned. Returning the message of the process to a running process.

Checking whether a message exists in the save queue when the save signal list does not exist in the input queue and the front message of the message queue does not match the save signal information in step b); And returning the front message of the save queue to the executing process if the message exists in the save queue, and returning the front message of the message queue to the executing process if the message does not exist in the save queue. do.

On the other hand, the characteristics of the recording medium that implements the program for implementing the conversion method from SD to C language are not mapped to C language and information that can be directly mapped to C language by analyzing programs written in SL in real time and distributed environment. A first function of separately recording information which has not been received; A second function of creating a runtime library to process information which is not directly mapped to C language in SD among the information recorded through the first function; And converting information not directly mapped from the SD to the C language into the C language in the form of a function call of the runtime library written through the second function, and directly mapped from the SD to the C language in the step a). The information stores a third function that translates directly into the C language.

In the development of communication software such as switch software, it is translated from SD, the design and specification language, to C, the implementation language. It provides a way to handle SD primitives, such as save signals, which are not provided by the C language, using runtime libraries that can be run on Linux and Unix operating systems.

Hereinafter, with reference to the accompanying drawings will be described in detail the configuration and operation of the present invention.

Figure 1 shows the hardware configuration of the SD to C conversion system of the embodiment according to the present invention.

As shown in FIG. 1, a system of an embodiment according to the present invention includes a main memory 101, a central processing unit 102, an auxiliary storage device 103, an input / output device 104, and a system bus 106. It is included.

The main memory 101 is equipped with a converter for converting a program written in SD to a C program, and system tools for developing runtime libraries.

The central processing unit 102 executes an executable file mounted in the main memory 101, and the auxiliary memory 103 stores various information. The input / output device 104 inputs / outputs all messages, and the system bus 106 transmits messages or information to and from the boards and devices.

The main memory 101, the central processing unit 102, the auxiliary memory 103, and the input / output device 104 mentioned above are controlled by the Unix operating system 105.

FIG. 2 illustrates a software configuration for generating an execution code from the SD to the C in the SD-to-C conversion system using the runtime library according to the embodiment of the present invention.

As shown in FIG. 2, the embodiment according to the present invention includes the SD analyzing unit 201, the SD mapping unit 202, and the C generating unit 203.

The SD analysis unit 201 analyzes a program written in SD input from the outside, extracts necessary information through the analysis result, and stores the SD structure information on the main memory 101.

The SD mapping unit 202 analyzes the SD structure information to separate the information that is directly mapped in the C language or the information that is not directly mapped in the C language, and stores the mapping information on the main memory 101.

The C generator 203 directly generates primitives mapped to C language directly from SD using mapping information, and directly maps non-targetable information such as a save signal into the main memory 101. Generate program code in the form of library functions using runtime libraries.

3 is a flowchart illustrating a method of converting SD to C language according to an embodiment of the present invention.

As shown in FIG. 3, the SD analyzing unit 201 analyzes a program written in SD, extracts necessary information, and stores the SD structure information in the main memory 101 (S1).

Thereafter, the SD mapping unit 202 reads the SD structure information from the main memory 101 and stores the mapping information by separating the information that can be directly mapped into the C language and the information that is not.

At this time, the information that can be mapped in C language directly in SD, the C generation unit 203 generates a code directly (S3).

By the way, the information that is not mapped to C language directly in SD is to write a runtime library that can be executed in Linux and Unix operating system 105 using main memory (101 system tools), and program code in the form of this library function. (S4)

FIG. 4 illustrates the structure of an input queue and a process having a double queue for processing a save signal of SD in FIG. 3.

As shown in FIG. 4, the process 301 which runs SD's process using the C language runtime library has an input queue 302 for each process to receive a signal.

The input queue 302 is composed of a message queue 303 for buffering an incoming signal (Signal 1) from an external process, and a save queue 304 for storing a save signal.

The input queue 302 compares the parameters passed from the running process 301 and then returns the appropriate signal (Signal 2).

Hereinafter, an operation of the input queue 302 that receives arguments from the running process 301 will be described with reference to the flowchart illustrated in FIG. 5.

FIG. 5 is a flowchart illustrating an internal execution of an input queue for processing SD signals of SD using FIG. 4.

As shown in FIG. 5, the executing process 301 passes the information about the save signal to the input queue 302 as an argument of the function call. (S11) Then, the input queue 302 is passed as an argument of the function call. Check whether the save signal list exists (S12).

When the save signal information exists in the input queue 302, the input queue 302 checks whether the front message of the message queue 303 and the save signal information match. (S13) The front message of the message queue 303. If and the save signal information match, the input queue 302 extracts and stores the front message of the message queue 303 to the save queue 304 (S14).

Thereafter, the input queue 302 returns the message to the running process if there is another message in the save queue 304, except for the message stored in the save queue 304; The front message of the queue 303 is extracted and returned to the running process (S15).

However, when the save signal list does not exist in the input queue 302 among the arguments of the function call above (S12), when the front message of the message queue 303 and the information of the save signal do not match (S13), the save It is checked whether a message exists in the queue 304 (S16).

If the message does not exist in the save queue 304, the front message of the message queue 303 is returned to the executing process (S15). However, if a message exists in the save queue 304, the front message of the save queue 304 is returned to the executing process 301 (S17).

The drawings and detailed description of the invention are merely exemplary of the invention, which are used for the purpose of illustrating the invention only and are not intended to limit the scope of the invention as defined in the claims or in the claims. Therefore, those skilled in the art will understand that various modifications and equivalent other embodiments are possible from this. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

System and method for converting SD to C language according to the present invention, the recording medium in which the program is implemented is separated from information that can be directly mapped to C language and information that is not in a program written in SD, and implemented in C language You can use the time library to create fully executed programs, and the runtime library to handle primitives such as save signals that are not mapped directly in C.

In addition, the SD to C language conversion system and method according to the present invention and the recording medium on which the program is implemented can maintain the consistency from specification and design to implementation in the development of a real-time distributed system such as an exchanger, and design level. The ability to add, change, or remove features from and to directly affect implementation without semantic changes can make development faster, reduce costs, and ultimately increase productivity.

Claims (12)

A main memory having a conversion module for converting a program written in a standard description language (hereinafter referred to as SDL) into a C language, and tools for creating runtime libraries for processing information not directly mapped to the C language; A central processing unit that executes programs and executable files of the main memory; And Input / output device for inputting and outputting all messages to the main memory or central processing unit SD to C language conversion system including a. The method of claim 1, And a secondary storage device for storing information input and output from the input / output device. The method of claim 1, The main memory, the central processing unit, and the input / output devices are controlled by a UNIX operating system. The method of claim 1, The conversion module of the main memory, An SD analysis unit configured to analyze the program written in the SD to extract and store necessary SD structure information; An SD-elevation unit for analyzing the SD-el structure information stored in the SD-EL analysis unit to store the thought information obtained by separating the information directly mapped to the C language from the SD and the information not directly mapped to the C language; And Information mapped in C language directly in SD through the mapping information stored in the SD mapping unit generates a code directly, and information not mapped in C language in SDL directly calls a function using the runtime library. C generator that generates program code in the form SD to C language conversion system including a. The method of claim 4, wherein The C generation unit, A system for converting from SD to C, comprising processes that are executed by using a runtime library written in C, which is executed in a Linux and Unix operating system, so that the SD can process information not mapped directly to the C language. The method of claim 5, wherein Each of the processes includes an input queue for receiving a signal, and the input queue includes a message queue buffering a signal input from an external process, and a save queue storing a save signal. To C language conversion system. The method of claim 6, And the input queue compares information about a signal passed as an argument of a function call from a running process and returns an appropriate signal to the running process. a) analyzing programs written in SD in real-time and distributed environments and separately recording information that can be directly mapped in C language and information not mapped in C language; b) creating a runtime library to process information that is not mapped directly from SD to C language among the information recorded in step a); And c) converting information not directly mapped from the SD to the C language to the C language in the form of a function call of the runtime library created in the step b); and directly mapping from the SD to the C language in the a) step. Converting information directly to C language SD to C language conversion method comprising a. The method of claim 8, In the step c), the step of converting information that is not directly mapped to the C language from the SD to the C language, In order to process the save signal of information not mapped in C language directly in the SD, the save signal and the general signal input are respectively processed by using an input queue including a message queue and a save queue in the runtime library. How to convert from SD to C language. The method of claim 9, Processing a save signal and a general signal input using the input cue, A) calling a function into the input queue with information on an input signal and a save signal as arguments to a receiving process to receive an input signal; B) if a save signal list exists in the information obtained through the step a) in the input queue, checking whether the front message of the message queue matches the save signal information; C) when the front message of the message queue and the save signal information coincide in step b), the input queue extracts the front message of the message queue and stores it in the save queue; And D) If there is another message in the save queue other than the message stored in the save queue in step c), the front message of the save queue is returned, and if no other message exists in the save queue, Returning the message to the running process SD to C language conversion method comprising a. The method of claim 10, Checking whether a message exists in the save queue when the save signal list does not exist in the input queue and the front message of the message queue does not match the save signal information in step b); And Returning a front message of the save queue to a running process if a message exists in the save queue; and returning a front message of the message queue to a running process if the message does not exist in the save queue. SD to C language conversion method comprising a. A first function of analyzing programs written in SD in real time and distributed environments, separately recording information that can be directly mapped in C language and information not mapped in C language; A second function of creating a runtime library to process information which is not directly mapped to C language in SD among the information recorded through the first function; And Information that is not mapped directly from the SD to the C language to the C language in the form of a function call of the runtime library written through the second function, and information directly mapped to the C language from the SD in the step a) 3rd function that translates directly into C language The recording medium in which the program for storing the data is implemented.