JPH06149713A - Data processor - Google Patents

Abstract

PURPOSE:To provide the data processor on which data in the same data file are never processed by plural input/output devices at the same time. CONSTITUTION:The data processor 2 is provided internally with an input/output part 21 which sends outputs from external input/output devices 1A-1N to the inside and outputs from the inside to those input/output devices to the specified input/output devices and a control table storage means 23 which stores a control table wherein the device identification codes that the input/output devices 1A-1N have and data file identification codes to data file in operation are made to correspond to each other. A data process instruction outputted by the input/ output part 21 is discriminated and the control table storage means 23 is referred to; when the process of the data file specified by the data process instruction is not processed, its input is allowed and in other cases, a process decision execution means 22 which outputs information showing that the process is being executed to the corresponding input/output device through the input/output part 21 judges whether or not the execution of the inputted data process instruction is allowed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data processing device,
In particular, the present invention relates to a data processing device that processes data asynchronously input from a plurality of externally connected input / output devices and stores the data in a file.

[0002]

2. Description of the Related Art FIG. 3 is a block diagram showing an example of the configuration of a conventional data processing apparatus of this type.

A plurality of external input / output devices 1A to 1N are connected to the conventional data processing device 2A of this type shown in FIG. 3, and these multiple input / output devices are provided in the data processing device 2A. An input / output unit 21 connected to the devices 1A to 1N,
The data processing command, which is connected to the input / output unit 21 and is output from the input / output devices 1A to 1N, is asynchronously processed according to this command, and the result is designated in the data file storage unit 25 described later. Processing execution means 24 for storing in a file.

The data file storage unit 25 has a function of storing the data processed by the above-mentioned data processing command for each file.

The above-mentioned data processing command includes a device identification code given in advance for each input / output device that has output this data processing command and a file identification code designating a file in which the processed data is to be stored. Also included is the specification of whether to enter new data or to modify previously stored data.

[0006]

The above-mentioned conventional data processing apparatus corrects specific data in a specific file from any one of a plurality of input / output devices (for example, the input / output device 1A). The designated data processing instruction and the necessary data are input, and the same data in the same file as above is input from another input / output device (for example, the input / output device 1B) during the processing of the data based on this data processing instruction. When a data processing command is input, the data processing command input after this is kept waiting within the range of the processing unit of one step by a predetermined exclusive control process, and After processing the data, processing is performed according to the late-arriving data processing command, but such processing cannot be made to wait due to multiple steps. Then, the processing based on the data processing command issued from the above two input / output devices is performed almost in parallel, and the result of the correction processing based on the last data processing is stored in the specified file. Will end up. In addition, since it is not known that such data processing is being performed in parallel with respect to the data in the same file between the input / output devices that output the above-mentioned data processing instructions, It has a drawback that the correction of the manipulated data is not executed as intended.

An object of the present invention is to, when data processing instructions for the same file are input from a plurality of input / output devices, invalidate the above-mentioned data processing instructions input later and execute data processing without error. It is to provide a data processing device that enables the data processing.

[0008]

According to the data processing apparatus of the present invention, data is created by a processing executing means provided inside based on a data processing instruction from a plurality of externally connected input / output devices. Storing the data in the corresponding data file storage unit and correcting the data stored in the data file storage unit according to the processing instruction of the input data, and applying the corrected data in the data file storage unit In a data processing device that performs a process of storing in a file, when a data processing command including a device identification name of the input / output device and a data file name to be processed and input data are received, the data processing device outputs the data processing device and outputs the data to the data processing device. An input / output unit for outputting information output from the processing device to the input / output device to the corresponding input / output device; A management table storing means for storing a management table in association with each other and the identification code of the device identification code and data files in the operation with the filling output device,
When a data processing command is received from the input / output unit that is interposed between the input / output unit and the processing execution unit, the data processing command is identified and the contents of the operating data file identification code corresponding to all the device identification codes in the management table are identified. If the working data file identification code designated by the received data processing instruction is present, the information indicating that the data processing relating to the designated data file is being executed is output to the input / output unit to identify the working data file. If the code does not exist, the data file identification specified by the data processing instruction as the operating file identification code in the management table corresponding to the device identification code corresponding to the input / output device specified by the received data processing instruction. The code is stored and the input data processing command is output to the processing execution means to execute the processing of the designated data. When the processing designated by the data processing execution means is completed, a processing determination execution means for storing a predetermined symbol indicating non-operation as an operation data file identification code corresponding to the corresponding device identification code in the management table, It is configured with.

[0009]

Embodiments of the present invention will now be described with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of the data processing apparatus of the present invention, and FIG. 2 is an explanatory diagram of the configuration of the management table stored in the management table storage means 23 shown in FIG. .

As shown in FIG. 1, the data processing apparatus 2 of the present embodiment includes an input / output unit 21 in addition to the input / output unit 21, the process executing means 24, and the data file storage unit 25 already described with reference to FIG. A process determination executing unit 22 interposed between the process executing units 24, and a management table storage unit 23 connected to the process determination executing unit 22 for storing a management table described later.
It has and.

The management table storage means 23 has a plurality of externally connected input / output devices 1A to 1A, as shown in FIG.
Designated by a data processing command output from any of the above-mentioned input / output devices 1A to 1N in the device identification code individually given to 1N and the data file stored in the data file storage unit. Then, a management table in which the data file identification code attached to the data file in operation by the data processing instruction is associated is stored. An area for storing the device identification code and the operation data file identification code of this data file is created in advance, and the device identification code is input and stored from the outside in advance, and the corresponding operation data file identification code is the data. A predetermined code that does not belong to any data file stored in the file storage unit 25 (for example, 0
00) is stored in advance.

Input / output devices 1A to 1 for the input / output unit 21
When a data processing command designating a file having the file identification code 001 is output from one of N, for example, the input / output device 1A, this command is input from the input / output unit 21 to the process determination execution means 22 as it is. , The data processing instruction is temporarily stored in the processing determination execution means 22, and
This processing determination executing means 22 is a data processing instruction.
The process determination executing means 22 refers to the contents of the operating data file identification code corresponding to all the device identification codes in the management table stored in the management table storage means 23, and identifies the identified data processing. It is checked whether or not there is one that matches the data file identification code specified in the instruction.

Here, when the above-mentioned matching item exists in the management table, predetermined information indicating that the data processing is being executed is added to the above-mentioned data for the file designated by the above-mentioned data processing instruction. The input / output device that has output the processing instruction is designated and output to the input / output unit 21, and the subsequent processing is stopped.

This information is sent to the corresponding input / output device via the input / output unit 21 and displayed.

If the data file identification code designated by the above-mentioned data processing instruction does not exist in the management table, the processing determination executing means 22 causes the management table corresponding to the input / output device that has output this data processing instruction. The operation data file identification code corresponding to the device identification code in the above is rewritten to the data file identification code of the data file designated by the above-mentioned data processing instruction, and the stored data processing instruction is executed. The data is output to the means 24 and the processing according to this data processing instruction is executed.

When the processing executing means 24 finishes the processing in accordance with the above-mentioned data processing command, the processing judgment executing means 22 detects the end of this processing, and the corresponding in the management table storing means 23 in the management table storing means 23. The operating data file identification code corresponding to the device identification code is written as the previously determined code, that is, a code that does not correspond to any data file identification code stored in the data file storage unit 25.

When the processing execution means 24 is performing processing in accordance with the above-mentioned data processing instruction, the data output from the input / output unit that has output this data processing instruction is processed by the processing determination execution means 22. It is output to the means 24.

As is apparent from the above description, when a data processing command designating a specific file is output from any one of the input / output devices 1A to 1N and is executed by the data processing device 2. In addition, even if a data processing instruction specifying the same data file is output from another input / output device among the above-mentioned input / output devices, the data processing instruction output after this is Data processing device 2
Is not accepted, and the information to that effect is output and displayed on the corresponding input / output device, indicating that the data processing command input by the operator of the input / output device that has output this data processing command was not accepted. It is possible to know the information and to re-input a data processing command that is not accepted again later.

[0020]

As described above, the data processing device of the present invention can prevent access to the same data file from a plurality of input / output devices at the same time. This has the effect that it is possible to correct the above-mentioned error without error.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of a data processing device of the present invention.

FIG. 2 is a management table storage unit 23 shown in FIG.
It is explanatory drawing which shows the structure of the management table in.

FIG. 3 is a block diagram showing an example of a conventional data processing apparatus of this type.

[Explanation of symbols]

 2 data processing devices 1A to 1N input / output device 21 input / output unit 22 processing determination execution unit 23 management table storage unit 24 processing execution unit 25 data file storage unit

Claims (1)

[Claims] 1. The data is stored in a corresponding data file storage unit by processing data created by an internal processing execution means on the basis of data processing commands from a plurality of externally connected input / output devices. In a data processing device, the data stored in the data file storage unit is corrected according to a processing instruction of the input data, and the corrected data is stored in a corresponding file in the data file storage unit. When a data processing command including a device identification name of the input / output device and a data file name to be processed and input data are received, the data is output to the data processing device and output from the data processing device to the input / output device. I / O unit for outputting the information to the corresponding I / O device, the device identification code of the I / O device, and the operating status When a data processing command is received from the input / output unit, the management table storage unit stores a management table in which the identification codes of the data files are associated with each other and the input / output unit and the process execution unit. The operation data file identification code corresponding to all device identification codes in the management table, and if the operation data file identification code specified by the received data processing instruction exists, the specified data file The information indicating that the data processing is being executed is output to the input / output unit, and if the operating data file identification code does not exist, the device identification code corresponding to the input / output device designated by the received data processing instruction is supported. A data file identification code designated by the data processing instruction as the operating file identification code in the management table Is stored and the input data processing command is output to the processing execution means to execute the processing of the specified data, and when the processing specified by the data processing execution means ends, the corresponding device identification code in the management table And a processing determination execution unit that stores a predetermined symbol indicating non-operation as an operation data file identification code corresponding to the above.