METHOD AND SYSTEM FOR PROCESSING MEMORY

• US 20160019031A1
• Filed: 07/17/2015
• Published: 01/21/2016
• Est. Priority Date: 07/18/2014
• Status: Active Grant

• Current Assignee: Mobai Company Limited, QURAM Co., Ltd.
• Original Assignee: FIngram Co., Ltd., QURAM Co., Ltd.
• Inventors: WEE, Young Cheul, YANG, Seong Jin
• Granted Patent: US 9,875,181 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G06F 12/0253 Garbage collection, i.e. reclamation of unreferenced memory
• CPC Class Codes: G06F 12/0269 Incremental or concurrent garbage collection, e.g. in real-time systems G06F12/0261 takes precedence
• CPC Class Codes: G06F 12/0276 Generational garbage collection
• CPC Class Codes: G06F 2212/1044 Space efficiency improvement
• CPC Class Codes: G06F 8/4441 Reducing the execution time required by the program code
• CPC Class Codes: G06F 9/45504 Abstract machines for programme code execution, e.g. Java virtual machine [JVM], interpreters, emulators
• CPC Class Codes: G06F 9/4856 resumption being on a different machine, e.g. task migration, virtual machine migration G06F9/5088 takes precedence

Abstract

A method and system for memory management is disclosed. The disclosed method and system can prevent performance degradation due to automatic garbage collection associated with memory allocation for image processing. An image processing program includes two program modules. The first program modules is composed with a first language supporting a garbage collection feature but does not have a direct memory access which may trigger the garbage collection feature. The second program module is composed with a second language lacking the garbage collection feature. The image processing program delegates memory allocation for image processing to the second program module to prevent unnecessary activation of the garbage collection feature.

Claims

1. A memory management method comprising:

requesting, at a first module corresponding to codes written in a first programming language, a second module corresponding to codes written in a second programming language for memory allocation; and

allocating, at the second module, a target memory portion in response to the request for memory allocation, and returning reference data indicating the allocated target memory portion to the first module, wherein

the first programming language is a programming language that carries out garbage collection in a case of memory allocation, and

the second programming language is a programming language that does not carry out garbage collection in the case of memory allocation.

2. The memory management method according to claim 1, further comprising:

requesting, at the first module, the second module to write data in the target memory portion indicated by the reference data by transferring the reference data to the second module; and

writing, at the second module, the data in the target memory portion indicated by the reference data in response to the request to write the data by the first module.

3. The memory management method according to claim 2, wherein allocating the target memory portion and returning the reference data indicating the allocated target memory portion to the first module comprises:

allocating, at the second module, the target memory portion in response to the request for memory allocation;

transforming a type of the reference data indicating the allocated target memory portion into an integer type; and

returning the reference data, the type of which is transformed into the integer type, to the first module.

4. The memory management method according to claim 3,

wherein requesting the second module to write the data in the target memory portion indicated by the reference data by transferring the reference data to the second module comprises requesting, at the first module, the second module to write the data in the target memory portion indicated by the reference data by transferring the reference data, the type of which is transformed into the integer type, to the second module, and

wherein writing the data in the target memory portion indicated by the reference data comprises:

transforming, at the second module, the type of the reference data, which is transformed into the integer type, into a pointer type; and

writing the data in the target memory portion indicated by the reference data, the type of which is transformed into the pointer type.

5. The memory management method according to claim 1, wherein the first programming language comprises Java, and the second programming language comprises a native language.

6. The memory management method according to claim 5, wherein requesting the second module for memory allocation uses a Java native interface.

7. The memory management method according to claim 1, wherein the data comprises image data.

8. A computer readable recording medium in which a program enabling the method as claimed in claim 1 to be carried out is recorded.

9. A memory management system comprising:

a processor; and

a memory storing a computer program that the processor executes,

wherein the computer program enables the memory management system to carry out the method as claimed in claim 1 when the computer program is executed by the processor.

10. A memory management system comprising:

a first module corresponding to codes written in a first programming language; and

a second module corresponding to codes written in a second programming language, wherein

the first module requests the second module for memory allocation,

the second module allocates a target memory portion in response to the request for memory allocation and returns reference data indicating the allocated target memory portion to the first module,

the first programming language is a programming language that carries out garbage collection in a case of memory allocation, and

the second programming language is a programming language that does not carry out garbage collection in the case of memory allocation.

11. The memory management system according to claim 10, wherein

the first module requests the second module to write data in the target memory portion indicated by the reference data by transferring the reference data to the second module, and

the second module writes the data in the target memory portion indicated by the reference data in response to the request to write the data by the first module.

12. The memory management system according to claim 11, wherein

the second module allocates the target memory portion in response to the request for memory allocation, transforms a type of the reference data indicating the allocated target memory portion into an integer type, and returns the reference data, the type of which is transformed into the integer type, to the first module,

the first module requests the second module to write the data in the target memory portion indicated by the reference data by transferring the reference data, the type of which is transformed into the integer type, to the second module, and

in response to the request to write the data by the first module, the second module transforms the type of the reference data, which is transformed into the integer type, into a pointer type, and writes the data in the target memory portion indicated by the reference data, the type of which is transformed into the pointer type.

13. The memory management system according to claim 10,

wherein the first programming language comprises Java, and the second programming language comprises a native language, and

wherein the first module requests the second module for memory allocation using a Java native interface.

14. A computer program stored in a recording medium comprising:

a first code part written in a first programming language; and

a second code part written in a second programming language, wherein

the first code part comprises codes requesting the second code part for memory allocation,

the second code part comprises codes allocating a target memory portion in response to the request for memory allocation and returning reference data indicating the allocated target memory portion,

the first programming language is a programming language that carries out garbage collection in a case of memory allocation, and

the second programming language is a programming language that does not carry out garbage collection in the case of memory allocation.

15. The computer program according to claim 14, wherein

the first code part further comprises codes requesting the second code part to write data in the target memory portion indicated by the reference data by transferring the reference data to the second code part, and

the second code part further comprises codes writing the data in the target memory portion indicated by the reference data in response to the request to write the data by the first code part.