JP2571298B2 - Data management control method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Summary] The present invention relates to a data management control method for managing all data expanded in a memory and a work file. A determining unit that determines the number of memory frames allocated to each data type in accordance with the data type usage ratio information of the notified request data; When the data frame to be stored is stored in the work file, a detection unit that detects a data type using a larger number of memory frames than allocated on the memory, and a data frame of the detected data type The memory frame storing the lowest priority data frame among the memory frames storing the And a data frame of a work file storing the requested data, instead of the data frame of the memory frame specified by the specifying unit.

[Industrial applications]

The present invention relates to a data management control method for managing all data developed in a memory and a work file. In particular, the present invention relates to a method for reading data to be read from a memory at high speed by reducing the number of accesses to a work file. The present invention relates to a data management control method that can be issued.

In a data processing device adopting a configuration in which all data required for performing data processing is expanded into a memory and a work file, when there is no data required in the memory,
The data stored in the work file is expanded in the memory, and unnecessary data expanded in the memory is stored in the work file instead. Access to the work file required at this time delays the data processing speed. From now on, it is necessary to provide such a data processing device with a means for reducing the number of accesses to the work file. In particular, in a data processing device that creates an application program interactively and performs a definition error check in real time, a very large amount of data reference processing required for the definition error check occurs. There is a great need to provide such means.

[Conventional technology]

In a conventional data processing apparatus, when exchanging unnecessary data developed in a memory with request data stored in a work file, the least frequently used data developed in the memory is exchanged with the work file. The method of exchanging the request data was adopted. As another method, a method of exchanging the most recently used data developed in the memory with request data of a work file may be adopted.

Here, in general, the data management control of the data processing device adopts a configuration in which a data frame storing a plurality of data is used as a processing unit. It is executed in a data frame storing the target data as an exchange unit.

[Problems to be solved by the invention]

As described above, the conventional data processing apparatus adopts a configuration in which the exchange processing of the unnecessary data in the memory and the request data of the work file is performed without considering the data type of the data to be exchanged. However, in the data processing apparatus, the data type of required data usually changes as the data processing progresses. That is, at the start of the data processing, it is necessary to read a lot of data of the data type A, but as the data processing progresses, it becomes necessary to read a lot of data of the data type B. Something like that happens.

From now on, in the prior art that does not consider the data type of the data to be exchanged, the data required by the requester cannot be preferentially loaded on the memory.
The problem is that the number of accesses to the work file increases, and high-speed data processing cannot be executed.

The present invention has been made in view of such circumstances,
In a data processing device that adopts a configuration in which all data required for performing data processing is expanded into a memory and a work file, the number of times of access to the work file is reduced, and data to be read is stored in the memory at high speed. It is an object of the present invention to provide a new data management control method that enables reading.

[Means for solving the problem]

 FIG. 1 is a diagram illustrating the principle of the present invention.

In the figure, reference numeral 1 denotes a data processing device provided with the present invention, and 2 denotes a work file provided in the data processing device 1, which stores data required for performing data processing in data frame units. is there.

The data processing device 1 includes a memory 10, a data processing unit 11, a data management control unit 12, a data management block 13, a data frame management block 14, and a memory frame management block 15.
Is provided.

The memory 10 performs processing to store a data frame of data that is not stored in the work file 2 among data necessary for performing data processing and is divided into memory frames.

The data processing unit 11 issues a request for data (request data) required for data processing, and prior to issuing the request data, performs data processing of which data type and to what extent before executing the subsequent data processing. Processing is performed to issue data type usage ratio information indicating whether to make a request.

The data management control unit 12 performs a process to control an exchange process between data stored in the memory 10 and data stored in the work file 2. In order to execute this processing, the data management control unit 12 is notified from the data processing unit 11 and the input / output control unit 16 that performs processing to control the input and output of the data frame between the memory 10 and the work file 2. A determining unit 17 that performs processing to determine the number of memory frames allocated to each data type according to the data type usage ratio information,
A detection unit 18 that processes to detect a data type using a memory frame number greater than the number of memory frames determined by the determination unit 17; and a memory that stores a data frame of the data type detected by the detection unit 18. A specifying unit 19 configured to specify a memory frame storing a data frame with the lowest priority among the frames.

The data management block 13 performs processing to manage data type information and data frame information of the storage destination of all data stored in the memory 10 and the work file 2.

The data frame management block 14 performs processing to manage the storage position information of each data frame.

The memory frame management block 15 performs processing to manage data type information, usage frequency information, and the like of data frames stored in each memory frame of the memory 10.

[Action]

In the present invention, at the start of data processing or during data processing, the data processing unit 11 issues data type use ratio information to the data management control unit 12 regarding requested data to be requested. Upon receiving the data type use ratio information, the determination unit 17 determines the number of memory frames to be allocated to each data type of the request data to be requested from now on, and registers the number in the memory frame management block 15.

Subsequently, the data processing unit 11 issues request data.When the request data is received, first, the detection unit 18 refers to the data management block 13 to generate a data frame for storing the request data. By detecting the data frame and referring to the data frame management block 14, it is determined whether the data frame is expanded in the memory 10 or stored in the work file 2. When it is determined that the data frame storing the requested data is expanded in the memory 10 by this determination, the input / output control unit 16 is activated.
The request data is read out from the data frame expanded in 10 and passed to the data processing unit 11 to execute a request data notification process.

On the other hand, when it is determined that the data frame containing the requested data is stored in the work file 2, the detecting unit
Subsequently, by referring to the management data of the memory frame management block 15, the data type using the memory frame number larger than the memory frame number determined by the determination unit 17 on the memory 10 is detected. I do. Upon receiving this detection result, the specifying unit 19 refers to the management data of the memory frame management block 15 and, among the memory frames storing the data type of the data type using the memory frame number more than necessary, The memory frame storing the lowest priority data frame is specified, and the input / output control unit 16 is started.

When started in this way, the input / output control unit 16 writes the data frame of the specified memory frame into the work file 2, reads the data frame containing the requested data from the work file 2, and expands the data frame into the memory 10. Then, the request data is read out from the data frame expanded in the memory 10 and passed to the data processing unit 11, whereby the request data notification process is executed.

As described above, according to the present invention, since the data of the data type required by the data processing unit 11 can be made resident in the memory 10, the number of accesses to the work file 2 can be reduced. Thus, high-speed data processing can be realized.

〔Example〕

 Hereinafter, the present invention will be described in detail with reference to examples.

FIG. 2 shows an embodiment of the data management control system of the present invention. In the figure, the same components as those described in FIG. 1 are indicated by the same symbols.

As shown in FIG. 1, the memory 10 is divided into N memory frames, and a data frame is developed for each of the divided memory frames. The data management block 13 manages the data type information of each data, the data frame information of the storage destination of each data, and the position information in the frame for all the data stored in the memory 10 and the work file 2. Be composed. Further, the data frame management block 14 is configured to manage in which memory frame position of the memory 10 each data frame is stored or in which data frame storage position of the work file 2. The memory frame management block 15 manages the data type information of the data frame stored in each memory frame of the memory 10 and the use frequency information thereof, and the result of the determination by the determination unit 17 described with reference to FIG. It is configured to manage the allocation result of the number of memory frames allocated to each data type. Since the data types of data contained in one data frame are all the same, the data type information managed by the memory frame management block 15 is managed on a memory frame basis.

As described in FIG. 1, the data processing unit 11 issues data type use ratio information on request data to be requested to the data management control unit 12 before issuing a series of request data. After that, processing is performed so as to execute request processing of request data. The data type usage ratio information issued at this time is for notifying the data management control unit 12 of, for example, the data type ratio of the request data to be requested (which may include the ratio of data that does not depend on the data type). It is not limited to the start of the data processing, but is preferably configured to be issued at any time as the data processing progresses.

FIG. 3 shows an embodiment of the processing of the data management control unit 12 executed when the data type use ratio information is received from the data processing unit 11, and FIG. 6 shows an embodiment of processing of the data management control unit 12 executed when a notification is received.

Next, the processing of the present invention will be described in detail with reference to the flowcharts of FIGS.

Upon receiving the data type usage ratio information from the data processing unit 11, the data management control unit 12 firstly, at step 1, as shown in the flowchart of FIG. The number of memory frames of the memory 10 allocated to the memory independent of the data type is determined from the ratio information of the memory independent, and the determined number of memory frames is set in the memory frame management block 15. Next, in step 2,
Memory 10 that can acquire each data type from the ratio information for each data type indicated by the data type usage ratio information
Is determined, and the determined number of memory frames is set in the memory frame management block 15. By this setting process, for example, N1 pieces of data type “A”, N2 pieces of “B”,.
The minimum number of memory frames that can be obtained for each data type is registered in the memory frame management block 15.

When the identifier of the requested data is notified from the data processing unit 11 following the data type use ratio information, the data management control unit 12 sets the data management block 13 in step 10 as shown in the flowchart of FIG. By referring to the frame number, the frame number of the data frame storing the requested data is detected.
Next, in step 11, it is determined with reference to the data frame management block 14 whether the data frame detected in this step 10 is stored in any of the memory frames of the memory 10.

When it is determined in step 11 that the data frame does not exist in the memory frame, that is, when it is determined that the data frame storing the requested data is stored in the work file 2, the process proceeds to step 12, and the memory frame management block is executed. Referring to FIG. 15, a list of data types in which more data frames are expanded in the memory 10 than the minimum number of memory frames set by the processing of the flowchart of FIG. Next, in step 13, referring to the memory frame management block 15, for each of the listed data types, the data frame having the lowest priority among the data frames developed in the memory 10 is specified. As a measure of the priority at this time, for example, a use frequency, an access order, and the like, which are used in the related art, are used.

Subsequently, in step 14, the data frame having the lowest priority among the data frames obtained in step 13 is specified.
That is, the processing of step 13 finds the lowest priority data frame of the data type A developed in the memory 10, the lowest priority data frame of the data type B, and so on. For each data type that uses a larger number of memory frames than the number of allocated memory frames, the lowest priority data frame among the data frames expanded in the memory 10 is specified. Therefore, in the process of step 14, the data frame with the lowest priority is further specified.

When one data frame with the lowest priority is specified according to the processing of step 14, subsequently, in step 15,
The specified data frame is written out to the work file 2, and in the subsequent step 16, the data frame (the data frame containing the requested data) detected by the processing of step 10 is read out from the work file 2, and The data frame is developed at the memory frame position of the memory 10 written out in the process of step 15. Then, in step 17, the request data is read from the data frame expanded in the memory 10 and notified to the data processing unit 11. On the other hand, in the judgment of step 11, the step
When it is determined that the data frame detected in step 10 is stored in the memory 10, there is no need to exchange data between the memory 10 and the work file 2.
Then, the request data is read out from the memory frame in which the data frame detected in step 10 is expanded, and is notified to the data processing unit 11.

As described above, when the request data is received from the data management control unit 12, the data processing unit 11 performs desired data processing using the request data, thereby controlling the next request data. Processing is performed to request the unit 12.

In this way, in the present invention, processing is performed so that data of the data type required by the data processing unit 11 is resident in the memory 10.

〔The invention's effect〕

As described above, according to the present invention, in a data processing device having a configuration in which all data necessary for performing data processing is expanded into a memory and a work file, data to be expanded from the work file to the memory is stored. Since the configuration is such that the execution is performed in consideration of the data type, the data of the data type required by the request source can be resident on the memory. As a result, the number of accesses to the work file can be significantly reduced, so that the data processing can be executed at a higher speed than before.

[Brief description of the drawings]

FIG. 1 is a block diagram showing the principle of the present invention, FIG. 2 is an embodiment of the present invention, and FIGS. 3 and 4 are embodiments of processing executed by the data management control unit. In the figure, 1 is a data processing device, 2 is a work file, 10 is a memory, 11 is a data processing unit, 12 is a data management control unit, 13 is a data management block, 14 is a data frame management block, and 15 is a memory frame management block. , 16 is an input / output control unit, 17 is a determination unit, 18 is a detection unit, and 19 is a specification unit.

Claims (1)

(57) [Claims] 1. A data processing unit which manages data necessary for performing data processing in a memory and a work file in units of frames, and exchanges data in the memory with data in the work file. In a data processing device that executes data processing by reading data requested from the memory from the memory, the use expectation of the number of memory frames allocated to each data type is determined according to the usage ratio information for each data type notified from the data processing unit. A determining unit (17) for determining the amount, and a request for request data issued by the data processing unit.
When the data frame containing the requested data is stored in the work file, the determination unit (17)
(18) for detecting a data type using a memory frame number larger than the number of memory frames determined by (1), and a memory frame for storing a data frame of the data type detected by the detection unit (18) And a specifying unit (19) for specifying a memory frame storing a data frame with the lowest priority among the data frames. The request data is stored in place of the data frame of the memory frame specified by the specifying unit (19). By expanding the data frame of the work file to be loaded on the memory,
A data management control method characterized by processing to expand request data in memory.