Method of detaching and re-attaching components of a computing process

• US 7,003,770 B1
• Filed: 02/22/1999
• Issued: 02/21/2006
• Est. Priority Date: 12/16/1998
• Status: Expired due to Fees

• Current Assignee: Kent Ridge Digital Labs
• Original Assignee: Kent Ridge Digital Labs
• Inventors: Ngair, Teow Hin, Pang, Hwee Hwa
• Primary Examiner(s): LAO, SUE X
• Application Number:
  US09/857,171
• Time in Patent Office: 2,556 Days
• Field of Search: 719/314, 719/313, 718/102, 718/108, 718/100, 718/106, 709/202, 709/201
• US Class Current: 718/100
• CPC Class Codes: G06F 9/4843 by program, e.g. task dispatcher, supervisor, operating system
• CPC Class Codes: G06F 9/4862 the task being a mobile agent, i.e. specifically designed to migrate

Abstract

A method removes a part of a computing process comprising items of data, program code and executing states. The process splits into a first process and a second sub-process. The second sub-process includes a portion of the program code and/or a portion of the execution state of the computing process not required by the first process.

Claims

1. A computer implemented method for removing a part of a computing process comprising items of data, program code and executing states, the method comprising:

splitting said computing process into a first process and a second sub-process, the second sub-process comprising a portion of the program code and/or a portion of the execution states of said computing process not required by said first process; and

forming a construct which stores said second sub-process, while said first process retains the process identity of said computing process,

wherein said second sub-process is a suspended process comprising data, program code and execution states of said computing process temporarily not required by said first process, and

wherein said first process is able to re-acquire data, program codes and execution states from said suspended process as and when required by said first process.

2. A computer implemented method as claimed in claim 1 wherein said sub-process further comprises items of data of said computing process.

3. A computer implemented method as claimed in claim 1 wherein said construct is formed by a construct operation that suspends all active threads of said computing process and creates a new sub-process comprising at least some of the data and/or program modules and/or execution state of said computing process, and stores said sub-process in a data area of said computing process.

4. A computer implemented method as claimed in claim 3 wherein said construct comprises only data, program modules and execution state falling within lists that are passed to said construct operation.

5. A computer implemented method as claimed in claim 1 wherein said construct is provided with an authorizing signature.

6. A computer implemented method as claimed in claim 1 wherein said construct is sent to a memory storage device.

7. A computer implemented method as claimed in claim 1 wherein said first process re-acquires data, program code and execution states from said suspended process falling within specified ranges.

8. A computer implemented method as claimed in claim 1 wherein said second sub-process comprises data, program code and execution states specific to a given user of a computing means, and wherein said second sub-process is formed to temporarily store said data, program code and execution states while said user is absent from said computing means.

9. A computer implemented method as claimed in claim 1 wherein after said first process finishes executing data, program code and execution states from said first process are added to said second sub-process and said second sub-process is reactivated.

10. A computer implemented method as claimed in claim 9 wherein said first process discards extraneous data, program codes and execution states acquired subsequent to the formation of said first process and said second sub-process prior to adding the program code and execution states from said first process to said second sub-process.

11. A computer implemented method as claimed in claim 1 wherein a construct is formed for storing said second sub-process, while said first process is run in place of said computing process.

12. A computer implemented method as claimed in claim 11 wherein said construct is formed by a construct operation that suspends all active threads of said computing process and creates a new sub-process comprising at least some of the data and/or program modules and/or execution state of said computing process, and stores said sub-process in a data area of said first process.

13. A computer implemented method as claimed in claim 12 wherein said construct comprises only data, program modules and execution state falling within lists that are passed to said construct operation.

14. A computer implemented method as claimed in claim 11 wherein said construct is provided with an authorizing signature.

15. A computer implemented method as claimed in claim 11 wherein said construct is sent to a memory storage device.

16. A computer implemented method as claimed in claim 1 wherein said first process re-acquires data, program code and execution states from said suspended process falling within specified ranges.

17. A computer implemented method as claimed in claim 11 wherein said second sub-process comprises data, program code and execution states specific to a given user of a computing means, and wherein said second sub-process is formed to temporarily store said data, program code and execution states while said user is absent from said computing means.

18. A computer implemented method as claimed in claim 11 wherein after said first process finishes executing data, program code and execution states from said first process are added to said second sub-process and said second sub-process is reactivated.

19. A computer implemented method as claimed in claim 18 wherein said first process discards extraneous data, program codes and execution states acquired subsequent to the formation of said first process and said second sub-process prior to adding the program code and execution states from said first process to said second sub-process.

20. A computer implemented method for removing a part of a computing process comprising items of data, program code and executing states, the method comprising

splitting said computing process into a first process and a second sub-process, the second sub-process comprising a portion of the program code and/or a portion of the execution states of said computing process not required by said first process;

forming a construct which stores said second sub-process, while said first process retains the process identity of said computing process;

after said first process finishes executing data, adding program code and execution states from said first process to said second sub-process and reactivating said second sub-process; and

discarding by said first process extraneous data, program codes and execution states acquired subsequent to the formation of said first process and said second sub-process prior to adding the program code and execution states from said first process to said second sub-process.

21. A computer implemented method for removing a part of a computing process comprising items of data, program code and executing states, the method comprising:

splitting said computing process into a first process and a second sub-process, the second sub-process comprising a portion of the program code and/or a portion of the execution states of said computing process not required by said first process; and

forming a construct which stores said second sub-process, while said first process is run in place of said computing process,

wherein said second sub-process is a suspended process comprising data, program code and execution states of said computing process temporarily not required by said first process, and

wherein said first process is able to re-acquire data, program codes and execution states from said suspended process as and when required by said first process.

22. A computer implemented method for removing a part of a computing process comprising items of data, program code and executing states, the method comprising:

splitting said computing process into a first process and a second sub-process, the second sub-process comprising a portion of the program code and/or a portion of the execution states of said computing process not required by said first process;

forming a construct which stores said second sub-process, while said first process is run in place of said computing process;

after said first process finishes executing data, adding program code and execution states from said first process to said second sub-process and reactivating said second sub-process; and

discarding by said first process extraneous data, program codes and execution states acquired subsequent to the formation of said first process and said second sub-process prior to adding the program code and execution states from said first process to said second sub-process.