DATA PROCESSING SYSTEM AND OPERATING SYSTEM

• US 20080184243A1
• Filed: 01/07/2008
• Published: 07/31/2008
• Est. Priority Date: 01/31/2007
• Status: Active Grant

• Current Assignee: Renesas Electronics Corporation
• Original Assignee: NEC Electronics Corporation (Renesas Electronics Corporation)
• Inventors: Otsuki, Norimasa, Saito, Yasuhiko
• Granted Patent: US 8,219,992 B2
• Time in Patent Office: Days
• US Class Current: 718/102
• CPC Class Codes: G06F 9/547 Remote procedure calls [RPC]; Web services

Abstract

Management programs for concealing differences in hardware configuration and OS are operated and stayed resident every OS. A database manipulated by the management programs is prepared. The database defines correspondences between tasks for hardware control and software processing, which are processed under the control of the OSs and their attached OSs, over the OSs. When the corresponding management program detects a startup request of a task, the management program extracts an entry corresponding to the task from the database. If an attached OS owned by the extracted entry is its own OS, then the task is processed under the control of the corresponding OS. If the attached OS owned by the extracted entry is other OS, then the startup request is passed to a processor of the other OS, where the task is processed.

Claims

1. A data processing system using a plurality of OSs and a plurality of processors, comprising:

a database in which correspondences between tasks processed under the control of the OSs and their attached OSs are defined over the OSs; and

management programs operated every said OS,

wherein when a startup of the task is requested, the processor that executes one management program retrieves database entries corresponding to the task from the database,

wherein when an attached OS of the database entry selected by the retrieval is an attached OS of the one management program, the processor processes the task under the control of the corresponding attached OS, and

wherein when the attached OS of the selected database entry is an attached OS of another management program, the processor passes necessary information to a processor that executes said another management program and processes the task under the control of the attached OS of said another management program.

2. The data processing system according to claim 1, wherein the processor that executes the one management program is capable of interactive communication with the processor that executes said another management program.

3. The data processing system according to claim 2,

wherein the database entries respectively include areas which respectively store therein global task IDs for distinguishing a plurality of tasks of a plurality of OSs from one another respectively, global task names, attached OSs of the tasks, task IDs of the tasks allocated by the attached OSs, and execution statuses of the tasks, and

wherein the areas that store the task IDs and the task'"'"'s execution statuses therein respectively are areas rewritable by the management programs.

4. The data processing system according to claim 3, wherein each of the database entries further includes an area for storing therein task protection information which restricts a task execution environment.

5. The data processing system according to claim 4, wherein the database entries further include areas for storing therein buffer size information which define buffer sizes used in the interactive communication.

6. The data processing system according to claim 3, wherein the processor executes the corresponding management program under the OS started up in response to initialization instructions of the system thereby to set initialization of a variable area of the database, and each management task processed by its corresponding management program is defined as a resident task and resides in the corresponding processor operated under the OS.

7. The data processing system according to claim 6, wherein the management program operated every said OS updates variable areas of database entries to which the OS belongs.

8. The data processing system according to claim 3, wherein the global task names correspond to task names respectively, and said each processor that executes the management program retrieves the database with the task name as a retrieval key.

9. The data processing system according to claim 8,

wherein the database entries further have areas for storing priorities therein respectively, and

wherein the priorities designated at the priority storage areas are different between a plurality of database entries different in global task ID and identical in global task name.

10. The data processing system according to claim 9, wherein said each processor that executes the management program selects a database entry highest in priority, which is specified in priority storage areas, where operable tasks exist in plural form when the plural database entries are selected by the retrieval.

11. The data processing system according to claim 10, wherein among a plurality of tasks specified within database entries different in global task ID and identical in global task name, one task is defined as such a task that hardware-based processing that other task utilizes is substituted with processing based on software of the corresponding processor.

12. The data processing system according to claim 10, wherein one task and other task are different in attached OS among a plurality of tasks specified within database entries different in global task ID and identical in global task name.

13. The data processing system according to claim 2, wherein the processors are formed in a single chip.

14. The data processing system according to claim 2, wherein the processors are formed in a plurality of chips respectively.

15. A data processing system using a plurality of OSs and a plurality of processors, comprising:

a database in which correspondences between tasks processed under the control of the OSs and their attached OSs are defined over the OSs; and

management programs operated every said OS,

wherein the database entries respectively include areas which respectively store therein global task IDs for distinguishing a plurality of tasks of a plurality of OSs from one another respectively, global task names, attached OSs of the tasks, task IDs of the tasks allocated by the attached OSs, execution statuses of the tasks, and priorities of the tasks,

wherein among a plurality of tasks specified within database entries different in global task ID and identical in global task name, one task is defined as such a task that hardware-based processing that other task utilizes is substituted with processing based on software of the corresponding processor, and

wherein when a startup of the task is requested, the processor that executes one management program retrieves database entries corresponding to the task from the database, and

wherein when tasks of the database entries selected by the retrieval are said one task and said other task, the processor that executes the one management program processes a task highest in priority within operable tasks under the control of the corresponding attached OS.

16. The data processing system according to claim 15, wherein the global task names correspond to task names respectively, and said each processor that executes the management program retrieves the database with the task name as a retrieval key.

17. The data processing system according to claim 16, wherein the priorities designated at the priority storage areas are different between a plurality of database entries different in global task ID and identical in global task name.

18. A data processing system using a plurality of OSs and a plurality of processors, comprising:

a database in which correspondences between tasks processed under the control of the OSs and their attached OSs are defined over the OSs; and

management programs operated every said OS,

wherein the database entries respectively include areas which respectively store therein global task IDs for distinguishing a plurality of tasks of a plurality of OSs from one another respectively, global task names, attached OSs of the tasks, task IDs of the tasks allocated by the attached OSs, execution statuses of the tasks, and priorities of the tasks,

wherein among a plurality of tasks specified within database entries different in global task ID and identical in global task name, one task and other task are made different in attached OS,

wherein when a startup of the task is requested, the processor that executes one management program retrieves database entries corresponding to the task from the database, and

wherein when tasks of the database entries selected by the retrieval are said one task and said other task, the processor that executes the one management program processes a task highest in priority within operable tasks under the control of the corresponding attached OS.

19. The data processing system according to claim 18, wherein the global task names correspond to task names respectively, and said each processor that executes the management program retrieves the database with the task name as a retrieval key.

20. The data processing system according to claim 19, wherein the priorities designated at the priority storage areas are different between a plurality of database entries different in global task ID and identical in global task name.