KR19990039779A - File loading method by interprocessor communication - Google Patents

Abstract

The present invention relates to a method for loading a desired file between processors capable of transmitting and receiving communication messages between processors. In the file loading method according to the present invention, when a processor corresponding to the client side sends a message requesting a file to be loaded through inter-processor communication, the corresponding file is opened among the files held by the processor on the server side receiving the message. When the read file information and the calculated checksum are transmitted to the client side processor in the form of an interprocessor communication message, the client side processor receives the received file in an arbitrary open file. The checksum is calculated for the file information to be written while writing the file information. If the calculated checksum information and the received checksum information are the same, the loading of the corresponding file is terminated. So you can load it on any processor you want to load all the files you want.

Description

File loading method by interprocessor communication

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a file loading method by inter-processor communication (hereinafter referred to as IPC), and in particular, to load a desired file between a processor capable of transmitting and receiving an IPC message provided in an exchange. It is about how to.

Existing MP (Main Processor) level processors in exchanges form LAN functions using sub-protocols such as TCP / IP (Transmission Control Protocol / Internet Protocol), and ftp (file transfer protocol) performed at the application level. File transfer process using the When such a file transfer is a transfer for loading an arbitrary file on a desired processor, the transferable file is limited by the program loader table information included in the client side processor. This is because only files registered in the program loader table included in the client-side processor can be loaded.

However, the currently used loading program is implemented to load and execute a file to be loaded directly into the memory of the client side processor. When the loaded file is a file that is not registered in the table of the processor of the client side, It may cause malfunction of processor. In order to prevent malfunctions in this way, there was a problem in the past that an operator should store information on a file stored in a program loader table provided in each processor.

An object of the present invention is to provide a file loading method for loading a file without using a program loader table.

Another object of the present invention is to provide a file loading method by interprocessor communication that loads an arbitrary file requested by a client-side processor using an interprocessor communication message.

In order to achieve the above object, a file loading method according to the present invention is a method for loading a file stored in a first main processor into a second main processor in a system having a plurality of main processors, the loading from a second main processor Receiving a request signal for a predetermined file sent in a reception standby state, when a request signal for a predetermined file desired to be transmitted is sent in the form of an interprocessor communication message; Transmitting a response signal in the form of an inter-processor communication message to the second main processor when the reception is normally performed; When the response signal is received, the second main processor performs an open process on a predetermined file of the first file storage unit provided in the second main processor and maintains a message reception standby state; Transmitting a response signal to the first main processor, and then performing an open process on a predetermined file among files stored in a second file storage unit provided in the first main processor; The first main processor performing a read mode on the predetermined open file and performing a checksum calculation on the read predetermined file, transmitting the read mode to the second main processor in a form of an interprocessor communication message and maintaining a standby state; When the information on the predetermined file and the corresponding checksum information are received from the first main processor, the second main processor performs a write mode of the information on the predetermined file received in the file opened on the first file storage unit. Calculating a corresponding checksum; The second main processor may be performed by comparing the checksum calculated during the write mode with the received checksum information, and terminating the loading of the predetermined file in the same case.

1 is a block diagram of an apparatus for performing a method according to the invention,

2 is a flowchart illustrating a file loading method according to the present invention.

<Description of Symbols for Main Parts of Drawings>

100: Client side MP (Main Processor) 101, 111: Process for IPC

102, 112: File storage unit 110: Server side MP

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram of an apparatus for performing a file loading method according to an embodiment of the present invention, which has a predetermined file to be loaded on a client-side main processor 100 and a client-side main processor 100 on which a predetermined file is to be loaded. It consists of a server-side main processor 110, each of the client-side main processor 100 and the server-side main processor 110 can transmit and receive data in an inter-processor communication (hereinafter referred to as IPC) message And a file storage unit 102 or 112 for storing data in the form of a file. The main processors 100 and 110 illustrated in FIG. 1 may be a central control processor (CCP) or an interconnection network subsystem (INS) provided in an exchange. If so, the client side main processor is INS and the server side main processor is CCP. The file storage units 102 and 112 are composed of a medium such as a hard disk.

2 is a flowchart illustrating a file loading method according to the present invention.

Next, an operation of the file loading method illustrated in FIG. 2 will be described in detail with reference to FIG. 1.

First, in a situation where the server side MP 110 maintains a reception standby state for an IPC message, the IPC processor 101 of the client side MP 100 sends a request signal for a desired file in step 201. After transmitting in the form, and proceeding to step 202 to maintain a standby state for the response signal Ack, the IPC processor 111 of the server-side MP 110 proceeds to step 203 in the standby state to the client side. The request signal sent from the MP 100 is received. In step 204, a response signal (Ack) indicating that the received signal is transmitted to the client-side MP (100), and in step 205, the client-side MP (100) of the file information stored in the file storage unit 112 Open the file requested by).

As a result of the open process, if the requested file is not opened, the IPC process 111 determines that an error has occurred and returns to the reception wait state for the IPC message. However, if the requested file is normally opened, the process 111 for IPC proceeds to step 207 via step 206.

In step 207, the IPC process 111 reads out the information of the opened file and simultaneously performs checksum calculation on the read file information. Checksum calculation is done in the same way as before. At this time, if it is determined that the opened file information is not normally read, the IPC processor 111 returns to the reception wait state for the IPC message via step 208.

On the other hand, when the IPC process 101 of the client side MP 100 receives the response signal from the server side MP 110 in the waiting state of the response signal of step 202, the process proceeds to step 210 through step 209. In operation 210, the IPC process 101 performs an open process on an arbitrary file included in the file storage 102. The arbitrary file to be opened is a file for the purpose of loading the file desired by the client side MP (100). At this time, if the opening of any file is not normally performed, the IPC process 101 proceeds to step 212 through step 211 to output an error message and terminate the loading operation.

However, if the open of any file in the file storage unit 102 is normally opened, the process for IPC 101 proceeds from step 211 to step 213 to maintain the reception standby state for the IPC message.

When the read mode of the file in step 207 is normally completed, the process 111 for IPC in the server-side MP 110 proceeds to step 214 through step 208 to obtain information on the read file and the calculated checksum information. It is sent in the form of an IPC message and returned to the reception standby state.

If the client side MP 100 maintains the IPC message reception state in step 213 and receives an IPC message from the corresponding server side MP 110, the client side MP 100 proceeds to step 216 through step 215 to remove the received file. In step 210, the file is opened in the write mode, and a checksum of the file to be written is calculated.

At this time, if the write mode is interrupted without being normally performed, the process 101 for IPC proceeds to step 212 through step 217 to output an error message and terminate the operation. However, when the write mode is normally performed, the IPC process 101 proceeds to step 218 through step 217 and compares the checksum received with the checksum calculated when the write mode is performed. As a result of the comparison, if the two values are the same, the IPC process 101 determines that the write mode is normally performed and ends the loading operation in step 219.

However, as a result of the comparison, if the two values are not the same, the process proceeds to step 212 through step 219 to output an error occurrence message and ends the operation.

As described above, in the present invention, when a file stored in one main processor among main processors provided in the exchange is loaded into another main processor, the loading file is processed by inter-processor communication and the loading file is stored in the main processor. By loading into the storage, it is advantageous to load all the desired files into the desired processor regardless of the existing program loader table. In addition, loading the loading file to the file storage unit provided in the processor to be performed by the MMC command corresponding to the Send Memory (SM) or RUN, thereby preventing a malfunction of the system that may occur due to being loaded and executed at the same time There are also benefits to doing this.

Claims (1)

A method for loading a file stored in a first main processor into a second main processor in a system having a plurality of main processors, the method comprising: If a request signal for a predetermined file to be loaded from the second main processor is sent in the form of an interprocessor communication message, the first main processor receives a request signal for the transmitted predetermined file in a reception standby state. ; Transmitting, by the first main processor, a response signal in the form of an inter-processor communication message to the second main processor when the reception is normally performed; When the response signal is received, performing a process of opening a predetermined file of a first file storage unit provided in the second main processor and maintaining a message reception waiting state; Transmitting, by the first main processor, the response signal, and performing open processing on the requested predetermined file among files stored in a second file storage unit provided in the first main processor; The first main processor performs a read mode for the predetermined open file and performs a checksum calculation for the predetermined file to be read, and sends the standby state to the second main processor in the form of an interprocessor communication message. Maintaining; When the information on the predetermined file and the corresponding checksum information are received from the first main processor, the second main processor is configured to store the information on the predetermined file received in the file opened on the first file storage unit. Calculating a corresponding checksum while performing a write mode; And comparing the checksum calculated during the write mode with the received checksum information, and terminating the loading of the predetermined file in the same case.