JPH03246633A - Memory management system for interpreter type language processing processor - Google Patents

Abstract

PURPOSE:To effectively use a main storage device by holding the sizes of respective data storaing area necessary for the execution of a program in a program file, and at the time of executing the program, securing respective areas in the main storage device in accordance with the sizes. CONSTITUTION:The sizes of respective data storing areas 2a to 2c necessary for the execution of the program are determined from program data stored in the program data storing area 2d of the main storage device 2 and added to the program data to form a program file 1. At the time of executing the file 1, the areas 2a to 2c are secured in the device 2 based upon respective data area sizes 1a to 1c. Since only the area sizes to be practically used are secured, the main storage can be effectively used.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to an interpreted language processor;
Especially regarding memory management methods.

[Conventional technology]

Conventionally, in this type of memory management method, the size of each data storage area on the main memory is determined by a default value fixedly held by the interpreter when starting an interpreter language processor (hereinafter abbreviated as interpreter), or After starting the interpreter, the size of each data storage area is uniquely determined by executing a command to set the size of each data storage area.

[Problem to be solved by the invention]

The memory management method in the conventional interpreted language processing processor described above fixedly determines the size of each data storage area in the main memory regardless of the program being executed. There is a drawback that an area larger than the storage area size is secured on the main memory as an area for the interpretive language processor.

[Means to solve the problem]

The memory management method in the interpretive language processor of the present invention includes means for holding in each program file the size of each data storage area on the main storage device that stores each data necessary for executing the program; and means for securing each area on the main storage device according to the size of each data storage area held in the program file when the program is executed.

〔Example〕

Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a block diagram showing one embodiment of the present invention. In FIG. 1, the interpreted language processor determines the size of each data storage area 2a, 2b, and 2c required when executing a block diagram from the program data stored in the program data storage area 2d on the main memory 2. . For example, if there are 5 kilobytes of string constants and 40 string variables in program data, the interpreter processor will have a string data storage area size of 5 kilobytes.
kilobytes + ((maximum value of strings that can be assigned to string variables specified by the interpreter processor 1 *
It is determined to be 401 kilobytes. The interpreter type language processing processor has each data storage area 2a, 2b, 2.
The size of c is added to the program data and created in program file 1.

Furthermore, when executing the program file 1, the interpreter type language processing processor determines whether the program file 1 holds each data area size, and if it holds each data area size, each data area size la , lb1.1c, each data storage area 2a on the main storage device 2.

Secure 2b and 2c.

〔Effect of the invention〕

As explained above, the present invention maintains the size of each data area on the main storage device necessary for program execution for each program file, and stores each data area on the main storage device according to this size when the program is executed. This has the effect of ensuring only the area size that will actually be used and making it possible to use the main storage device effectively.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing one embodiment of the present invention. 1...Program file, la...Data area size, 1b...Data area size, 1c...Data area size, 1d...Program data, 2...Main storage device, 2a... Data storage area, 2b...Data storage area, 2C...Data storage area, 2d...Program data storage area.

Claims (1)

[Claims] In the memory management method of an interpreted language processing processor, there is a means for retaining the size of each data storage area on the main memory device that stores each data necessary for program execution for each program file, and a method for storing each data storage area in the program file when the program is executed. 1. A memory management system in an interpretive language processing processor, comprising means for securing each area on a main storage device according to the size of each data storage area held in a file.