Thread-safe portable management interface

• US 7,206,843 B1
• Filed: 04/21/2000
• Issued: 04/17/2007
• Est. Priority Date: 04/21/2000
• Status: Expired due to Term

• Current Assignee: Oracle America, Inc. (Oracle Corporation)
• Original Assignee: Sun Microsystems Incorporated (Oracle Corporation)
• Inventors: Angal, Rajeev, Allavarpu, Sai V., Bhalerao, Anand J.
• Primary Examiner(s): BULLOCK JR, LEWIS ALEXANDER
• Application Number:
  US09/553,971
• Time in Patent Office: 2,552 Days
• Field of Search: 709/100, 709/101, 709223-226, 718100-108, 718/1, 719310-332
• US Class Current: 709/226
• CPC Class Codes: H04L 41/00 Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
• CPC Class Codes: H04L 41/0226 Mapping or translating multiple network management protocols
• CPC Class Codes: H04L 41/0233 Object-oriented techniques, for representation of network management data, e.g. common object request broker architecture [CORBA]
• CPC Class Codes: H04L 41/046 comprising network management agents or mobile agents therefor
• CPC Class Codes: H04L 41/052 using standardised network management architectures, e.g. telecommunication management network [TMN] or unified network management architecture [UNMA]

Abstract

A system and method for using a management interface such as Portable Management Interface (PMI) in a thread-safe and efficient manner. A secondary scheduler receives PMI management requests from multi-threaded manager applications in a thread-safe manner, such as through a lock. The secondary scheduler monitors the flow of PMI-related requests into PMI to ensure that, at any point in time, only one management request (e.g., callback function) is running on the PMI thread. When a request in the secondary queue is ready for scheduling with the primary scheduler, the secondary scheduler then accesses the primary scheduler in a thread-safe manner, such as through a lock, to send the request to the primary scheduler. The management requests are dispatched from the primary scheduler and executed on managed objects though a Management Information Server. The performance and efficiency of the manager applications is enhanced by increasing the responsiveness of interaction between the manager applications and the schedulers. The performance of the management interface is enhanced by eliminating the need for polling-based scheduling solutions.

Claims

1. A thread-safe scheduler system, comprising:

at least one processor; and

memory coupled to the at least one processor, wherein the memory is configured to store program instructions executable by the at least one processor to implement;

a primary scheduler which is executable to schedule requests for networked data resources; and

a secondary scheduler, wherein the secondary scheduler is executable to receive a plurality of requests from a multi-threaded application in a thread-safe manner and send the requests received from the multi-threaded application to the primary scheduler in a thread-safe manner;

wherein the requests comprise callback functions, and wherein the callback functions are executable to send responses to the requests to the multi-threaded application.

2. The system of claim 1, wherein the primary scheduler is single-threaded.

3. The system of claim 1, wherein the secondary scheduler is multi-threaded.

4. The system of claim 1, wherein the secondary scheduler is executable to receive the plurality of requests from the multi-threaded application through a lock in a thread-safe manner.

5. The system of claim 1, wherein the primary scheduler is executable to receive the plurality of requests from the secondary scheduler through a lock in a thread-safe manner.

6. The system of claim 1, wherein the resources comprise a management information server, wherein the requests received from the multi-threaded application comprise management requests, and wherein the multi-threaded application comprises a multi-threaded manager application.

7. The system of claim 1, wherein the program instructions are executable by the at least one processor to further implement:

a management information server coupled to the primary scheduler through a management interface, wherein the primary scheduler is operable to send the requests from the secondary scheduler to one or more managed objects through the management information server.

8. The system of claim 7, wherein the managed objects comprise one or more objects corresponding to a telephone network.

9. The system of claim 7, wherein the managed objects comprise an object corresponding to a telecommunications device.

10. The system of claim 7, wherein the management interface comprises Portable Management Interface (PMI), wherein PMI is single-threaded, and wherein PMI comprises a plurality of functions which are operable to carry out the requests.

11. The system of claim 1, wherein the primary scheduler comprises a primary queue which is operable to hold pending requests and responses to the requests.

12. The system of claim 1, wherein the secondary scheduler comprises a secondary queue which is operable to hold pending requests.

13. The system of claim 1, wherein the program instructions are executable by the at least one processor to further implement:

a communication pipe between the primary scheduler and secondary scheduler, wherein the secondary scheduler uses the communication pipe to wake the primary scheduler prior to sending one of the requests to the primary scheduler.

14. A thread-safe method for using a management interface for management of a plurality of managed objects on a network, the method comprising:

receiving a plurality of management requests from a multi-threaded manager application into a secondary scheduler in a thread-safe manner;

scheduling the plurality of management requests in a secondary queue in the secondary scheduler after receiving the management requests from the manager application;

sending the management requests from the secondary scheduler to a primary scheduler in a thread-safe manner;

scheduling the management requests in a primary queue in the primary scheduler, wherein each of the management requests comprises a corresponding callback function; and

executing the management requests on the managed objects after scheduling the management requests in the primary queue.

15. The method of claim 14, wherein executing the management requests on the managed objects further comprises sending the management requests to a management information server coupled to the managed objects.

16. The method of claim 14, further comprising:

receiving a response to one of the management requests from one of the managed objects after executing that management requests on one of the managed objects; and

executing the corresponding callback function for that management request to send the response to the multi-threaded manager application.

17. The method of claim 16, further comprising:

enqueueing the response in the primary queue after receiving the response from one of the managed objects;

finding the callback function corresponding to the response after enqueuing the response; and

dequeueing the response from the primary queue before executing the corresponding callback function to send the response to the multi-threaded manager application.

18. The method of claim 14, wherein the management interface comprises Portable Management Interface (PMI), wherein PMI is single-threaded, and wherein PMI comprises a plurality of functions which are operable to execute the management requests.

19. The method of claim 14, wherein the managed objects comprise one or more objects corresponding to a telephone network.

20. The method of claim 14, wherein the managed objects comprise an object corresponding to a telecommunications device.

21. The method of claim 14, wherein the receiving the plurality of management requests from the multi-threaded manager application into the secondary scheduler in the thread-safe manner comprises receiving the plurality of management requests through a thread-safe lock.

22. The method of claim 14, wherein sending the management requests to the primary scheduler in the thread-safe manner comprises dispatching the management requests through a thread-safe lock.

23. The method of claim 14, wherein the primary scheduler is executed in a single thread associated with the management interface, and wherein the secondary scheduler is executed in at least one different thread.

24. The method of claim 14, wherein the secondary scheduler is multi-threaded.

25. A tangible, computer-readable storage medium comprising program instructions, wherein the program instructions are computer-executable to implement:

receiving a plurality of management requests from a multi-threaded manager application into a secondary scheduler in a thread-safe manner;

scheduling the plurality of management requests in a secondary queue in the secondary scheduler after receiving the management requests from the manager application;

sending the management requests from the secondary scheduler to a primary scheduler in a thread-safe manner;

scheduling the management requests in a primary queue in the primary scheduler, wherein each of the management requests comprises a corresponding callback function; and

executing the management requests on the managed objects after scheduling the management requests in the primary queue.

26. The tangible, computer-readable medium of claim 25, wherein executing the management requests on the managed objects further comprises sending the management requests to a management information server coupled to the managed objects.

27. The tangible, computer-readable medium of claim 25, wherein the program instructions are further executable to implement:

receiving a response to one of the management requests from one of the managed objects after executing that management request on one of the managed objects; and

executing the corresponding callback function for that management request to send the response to the multi-threaded manager application.

28. The tangible, computer-readable medium of claim 27, wherein the program instructions are further executable to implement:

enqueueing the response in the primary queue after receiving the response from one of the managed objects;

finding the callback function corresponding to the response after enqueuing the response; and

dequeueing the response from the primary queue before executing the corresponding callback function to send the response to the multi-threaded manager application.

29. The tangible, computer-readable medium of claim 25, wherein the management interface comprises Portable Management Interface (PMI), wherein PMI is single-threaded, and wherein PMI comprises a plurality of functions which are operable to execute the management requests.

30. The tangible, computer-readable medium of claim 25, wherein the managed objects comprise one or more objects corresponding to a telephone network.

31. The tangible, computer-readable medium of claim 25, wherein the managed objects comprise an object corresponding to a telecommunications device.

32. The tangible, computer-readable medium of claim 25, wherein the receiving the plurality of management requests from the multi-threaded manager application into the secondary scheduler in the thread-safe manner comprises receiving the plurality of management requests through a thread-safe lock.

33. The tangible, computer-readable medium of claim 25, wherein sending the management requests to the primary scheduler in the thread-safe manner comprises dispatching the management requests through a thread-safe lock.

34. The tangible, computer-readable medium of claim 25, wherein the primary scheduler is executed in a single thread associated with the management interface, and wherein the secondary scheduler is executed in at least one different thread.

35. The tangible, computer-readable medium of claim 25, wherein the secondary scheduler is multi-threaded.