KR20000044314A - Method for using inter process communication signals between same processors - Google Patents

Abstract

PURPOSE: A method for using an inter process communication(IPC) signals is provided to reduce system load by allocating a code capable of being recognized in each program when information between the programs is transmitted in same processors, to manage the code by using a table in a specific program, and by using an IPC signal as an identification(ID) of the IPC signals, and to reduce a storage space of a memory by storing necessary information and results in same buffers to commonly use the information and the results, and to directly access an address of the memory to improve performing speeds of the programs. CONSTITUTION: A method for using a common inter process communication(IPC) signal in same processors of a system performing IPC communication, comprises the steps of: allocating a code and a variable capable of recognizing performed programs in the same processors to a table of a specific program, and loading the code/the variable in the IPC signal to transmit the code/the variable; making the specific program receive the code/the variable to index the code/the variable to a given code, and calling a corresponding program; if the corresponding program recognizes the call, directly reading information necessary for performing programs from the corresponding program, and performing the programs; and storing results of the programs in a memory of the corresponding program, and storing a result whether the programs are performed in the memory.

Description

How to use APC signal between same processors

The present invention relates to a method of using an inter process communication (IPC) signal between processors, and more particularly to a method of using an IPC signal using multiple IPC signals as one IPC signal in using an IPC signal for information transmission in the same processor. It is about.

In general, a system consisting of a collection of processors each having an independent MPU and a memory, such as an exchange, exchanges information between processors using an Inter Process System (IPC).

1 is a diagram illustrating a system connection for information transfer between processors having a conventional IPC communication structure.

Since processor A and processor B have different MPUs and memories, IPC signals are used for IPC communication. Such transfer of information is often made of a pair of request signal Rquest and response signal Replay.

2 is a diagram of a conventional IPC communication connection structure.

The IPC signal is transmitted to the target processor through each node through a process and hardware that manages the signal. This IPC signal puts a load on the system and takes a long time to transmit information. In order to distinguish several IPC signals transmitted and received at the same time, a unique number is assigned to each signal. However, there is a limit in system design to assigning an IPC signal ID. In addition, although IPC signals are required for information transfer between programs of different processors, a system based on communication such as an exchange uses IPC signals in the same processor as shown in FIG.

3 is a diagram illustrating a general IPC communication state in the same processor.

Referring to FIG. 3, in order to transmit and receive information from program A to program B, a buffer for temporarily storing information about a request signal Rquest is needed in program A, and information received from program B as a request signal Rquest is also provided. In order to use it, you need a buffer to temporarily store the information. In addition, program B needs a buffer to store the request signal Rquest in order to transmit information to program A, and program A needs a buffer to store it.

The use of such dual memory decreases the efficiency of memory use and is mostly caused by a pair of request signals (Rquest) and response signals (Replay), which is a cause of simultaneous IPC signal generation. If a large amount of signal occurs at once, the load rises, which can cause the system to malfunction and lose IPC signals. As the execution speed of the program has to go through several steps as shown in the example of FIG. 2, and the necessity of the continuous function implementation in the system using the limited IPC signal ID increases, the shortage of the IPC signal ID may occur.

Accordingly, an object of the present invention is to provide a method of using an IPC signal that can be used as one IPC signal as multiple IPC IDs when transmitting information using IPC communication between the same processor company.

In the method of using the common IPC signal in the same processor in the system for performing the IPC communication of the present invention for achieving the above object, by assigning a code and a variable that can recognize the execution program in the same processor to a table of a specific program A process of transmitting on the IPC signal, a process of invoking the corresponding program by receiving a code and a variable loaded in the IPC signal from the specific program into a given code, and a program which attempted the call when the corresponding program is called. And performing the program by directly reading information necessary for the execution of the program from the program, and storing the result of execution and whether the execution is performed in the memory area of the program which attempted the call.

1 is a system connection diagram for information transfer between processors having a conventional IPC communication structure

2 is a diagram of a conventional IPC communication connection structure

3 is a block diagram showing a general IPC communication state in the same processor

4 is a block diagram of using a common IPC signal in the same processor according to an embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. First, in adding reference numerals to the components of each drawing, it should be noted that the same reference numerals have the same reference numerals as much as possible even if displayed on different drawings. In the following description of the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

4 is a block diagram of using a common IPC signal in the same processor according to an embodiment of the present invention.

It defines the type of data (represented in the following mode) for transferring information between program A and program B in the same processor. The data type for this information transfer also defines the type of information needed to execute a particular routine and the type of variable that will store the result. In addition, the result flag (Result Flag) that shows whether the result is executed is defined in the mode. Program A's memory shows the variables in the defined mode. In program C, a table is defined in which a code number corresponding to an IPM signal ID or a name of an action to be performed is indexed to a specific program. Program C stores a program to be called in Touple of the table, and has an address buffer to store an address to be delivered by a request signal. Code numbers are defined at the time of program execution, so increasing the size of this data may not limit ID resources. The number of IPC signal IDs is not limited to the value set at the time of system design. The mode of the IPC signal is defined to contain a code for identifying a program to be executed and an address of a variable to be used.

Program A defines a variable according to a predefined mode, and Program A executes code A assigned to program B to perform information to be sent to the start address A of the defined variable to IPC signal A, which is a request signal. Come on. Program A, which sends IPC signal A, monitors whether the result flag is marked by program B. Program C then indexes the code given by program A in its own table and calls the program, passing address A to program B. Since the program C executes the corresponding program only with the information of the table defined in the program C, it is not necessary to use various conventional IPC signal IDs. Program B reads the necessary information using address A and performs the necessary routine using the read information. Since program B directly obtains necessary information from program A, program B does not need information storage space, so that the storage space can be reduced, and the execution speed is faster than that of a conventional method that requires multiple steps. Program B stores the result of the execution in the part defined for the result in the variable area of Program A and marks the result in the result flag. Therefore, since program B directly stores the result in program A, the IPC signal is not needed in response to the request signal, thereby reducing the number of occurrences of the IPC signal and increasing the execution speed, and transmitting the response signal. Save memory for

As described above, the present invention allocates codes recognizable in each program to transfer information between programs in the same processor, and manages them using a table in a specific program, thereby using a plurality of IPC signal IDs. It can reduce the load of the system, and can save the memory storage space by storing the necessary information and results in the same buffer once and jointly, and can improve the execution speed of the program by directly accessing the memory address. There is an advantage to that.

Claims (1)

In a method using a common IPC signal in the same processor in a system performing IPC communication, Assigning codes and variables for recognizing execution programs in the same processor to a table of a specific program and transmitting them in an IPC signal; Receiving a code and a variable carried in an IPC signal from the specific program and indexing the code with a given code to call a corresponding program; When the call is recognized by the corresponding program, directly executing the program by directly reading information necessary for the program execution from the program that attempted the call; executing the program; Method of using a common IPC signal in the same processor, characterized in that the process of storing in the memory area.