JPS63265326A - Memory area managing system for high-level language library - Google Patents

Abstract

PURPOSE:To omit the memory acquiring and opening processes within a library and to reduce the memory capacity by deciding successively the memory capacities requested by each high-level language library and acquiring and opening automatically a desired memory area. CONSTITUTION:A language processor is started by a starting means 5 and carries out a source program 8. An acquiring means 3 is first started and the memory sizes within a working area of an executing routine are supplied from a memory acquiring data memory means 6. Thus a memory 7 is acquired based on the memory size and the head address of the memory 7 is stored in the means 6. A high-level language library acquires the head address out of the means 6 and uses the memory 7. Finally the executing routine which performs the final processing is called and an opening means 4 is started. The head address and the memory size are supplied from the means 6 in the working area of the executing routine. Then the memory 7 is opened and the operation is returned to the means 5. In such a way, a memory area of the high-level language library is managed.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to memory area management for a high-level language library that manages the acquisition and release of a memory area used by a high-level language library created in a reentrant format in an information processing device. Regarding the method.

[Conventional technology]

Conventionally, high-level language libraries are not always referenced in user programs, so memory management for high-level language libraries created in reentrant format involves acquiring and using the required memory area within each individual library. The linker allocated memory needed during linking that was released later.

[Problem that the invention seeks to solve]

In the conventional memory area management method described above, memory is acquired and released each time an individual high-level language library is cited, or memory is allocated for the library to use as a work area during linking, so the former If , memory acquisition.

There are drawbacks such as an increase in release processing time, memory acquisition, the trouble of incorporating the release process into each library, and an increase in the capacity of the library. In the latter case, the disadvantage is that memory is acquired even though the library is not referenced.

[Means for solving problems]

The memory area management method of the high-level language library of the present invention is as follows:
In a memory area management method for a high-level language library, which has a memory control mechanism, is equipped with a compiler-type language processing processor, and manages a memory area based on memory acquisition data that indicates the name of the high-level language library and the memory size used in advance, the language identification means for identifying whether or not a source program input after startup of the processing processor quotes a high-level language library; a registration means for registering the memory acquisition data of the high-level language library identified by the identification means; A memory acquisition data storage means for storing the memory acquisition data by a means, and a memory area required by the high-level language library is first read out from the memory acquisition data stored in the memory acquisition data storage means upon execution of the source program. an acquisition means for acquiring the memory area in the memory before being stored in the high-level language library; and a release means for releasing the memory area acquired by the acquisition means after the processing of the last high-level language library is completed as the source program is executed. have.

〔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 this embodiment, identification means 1. Registration means 2゜Acquisition means 3.
゛Opening means 4. Starting means 5. Memory acquisition data storage means 6. It consists of a memory 7 and a source program 8.

FIGS. 2 to 5 are flowcharts illustrating the operation of each part.

Next, the operation of the present invention will be explained. First, the user starts the language processing process, Tsusa, from the starting means 5. The language processor reads the source program 8 and operates the identification means 1 after parsing the syntax. The identification means 1 obtains an external symbol name from the symbol table generated after syntax analysis (step 1.1), and obtains a memory indicating the name of a high-level library registered in advance in the language processor and the memory size to be used. Search the data to identify whether the external symbol name matches the name of the high-level language library (step 12), and if it does, obtain the memory size in the memory acquisition data where the library name exists. (Step 13), the registration means 2 is activated. In this way, all external symbols are identified as to whether they are high-level language library names or not, and the process returns to the activation means 1. The registration means 2 compares whether the memory size obtained from the memory acquisition data is larger than the memory size of the memory acquisition data storage means 6 secured by the language processor in the Japanese music area of the runtime routine (step 21); Only when the memory size obtained from the memory acquisition data is large, the memory acquisition data storage means 6 uses this value.
The memory size of is updated (step 22), and the process returns to the identification means 1.

Next, the source program is executed from the starting means 5, and the acquisition means 3 is started by executing the first execution routine. The acquisition means 3 inputs the memory size in the work area of the runtime routine from the memory acquisition data storage means 6 (step 31), and acquires the memory 7 according to this memory size. The address is stored in the memory acquired data storage means 6 (step 33) and the process is ended. The high-level language library obtains the start address in the memory acquisition data storage means 6 and uses the memory 7. Finally, a runtime routine for final processing is called and the opening means 4 are activated. The release means 4 inputs the start address and memory size from the memory acquisition data storage means 6 in the work area of the execution routine (step 41), releases the memory 7 (step 42), and returns to the activation means 5. In this way, the memory area of the high-level language library is managed.

In the embodiment, the memory acquisition data storage means and the memory are shown separately, but it goes without saying that they may be arranged on the same memory.

〔Effect of the invention〕

As explained above, the present invention sequentially determines the amount of memory required by each high-level language library cited in a source program, and automatically acquires and releases the required memory area. This has the following effects.

l) Memory acquisition and release processing within the library becomes unnecessary, reducing the capacity of the library. 2) Processing time is improved because memory is not acquired or released within each library during execution. 3) Since memory is acquired only when the library is cited, memory can be used effectively.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of a memory area management system for a high-level language library of the present invention, FIG. 2 is a flowchart of the identification means 1 shown in FIG. 1, and FIG. 4 is a flowchart of the acquisition means 3 of FIG. 1, and FIG. 5 is a flowchart of the release means 4 of FIG. 1. 1... Identification means, 2... Registration means, 3... Acquisition means, Agent Patent Attorney Uchihara (shi') 1st TEJ 3rd Hand 4

Claims (1)

[Claims] In a memory area management method for a high-level language library, which has a memory control mechanism, is equipped with a compiler-type language processing processor, and manages a memory area based on memory acquisition data that indicates the name of the high-level language library and the memory size used in advance, the language identification means for identifying whether or not a source program input after startup of the processing processor quotes a high-level language library; a registration means for registering the memory acquisition data of the high-level language library identified by the identification means; A memory acquisition data storage means for storing the memory acquisition data by a means, and a memory area required by the high-level language library is first read out from the memory acquisition data stored in the memory acquisition data storage means upon execution of the source program. acquisition means for acquiring the memory area before the high-level language library is called; and release means for releasing the memory area acquired by the acquisition means after the processing of the last high-level language library is completed as the source program is executed. A memory area management method for a high-level language library.