System and method for management of characterized resources

• US 7,685,597 B1
• Filed: 02/20/2004
• Issued: 03/23/2010
• Est. Priority Date: 02/20/2004
• Status: Active Grant

• Current Assignee: Oracle America, Inc. (Oracle Corporation)
• Original Assignee: Sun Microsystems Incorporated (Oracle Corporation)
• Inventors: Skinner, Glenn C., Hahn, Stephen C., Czajkowski, Grzegorz J., Soper, Peter James, Bryce, Ciaran J.
• Primary Examiner(s): An; Meng-Ai
• Assistant Examiner(s): WAI, ERIC CHARLES
• Application Number:
  US10/783,625
• Time in Patent Office: 2,223 Days
• Field of Search: 718104-105, 707/9
• US Class Current: 718/100
• CPC Class Codes: G06F 2209/504 Resource capping
• CPC Class Codes: G06F 2209/508 Monitor
• CPC Class Codes: G06F 9/5016 the resource being the memory
• CPC Class Codes: Y02D 10/00 Energy efficient computing, e.g. low power processors, power management or thermal management

Abstract

Providing a resource domain structure allows flexible management of resources. With flexible management, computations, such as threads and processes, do not have to be related to be bound to the same resource domain. Since resource domains do not require the parent-child relationship, unrelated computations can bind each other to their resource domains. A data structure identifies a resource domain, the resource of the domain, and implementation of a resource management policy. The implementation of the resource management policy includes policy action, which when executed invoke policy imposing isolates. The resource domain data structure also indicates availability of usage of the resource.

Claims

1. A computer-readable storage medium storing program instructions computer-executable to perform operations comprising:

encoding a first association between a single computer resource and one or more resource management policies for the single computer resource;

encoding a second association between the single computer resource and one or more resource management policies for the single computer resource, wherein at least one of the one or more resource management policies associated with the single resource by the second encoding is different from the one or more policies associated with the single resource by the first encoding;

a policy imposing isolate installing in a first resource domain structure a set of one or more policy actions corresponding to the one or more resource management policies associated with the single resource by the first encoding;

binding one or more encapsulated computations that are consumers of the single resource to a single one of the first and second encodings; and

executing the one or more encapsulated computations in accordance with the one or more resource management policies for the single computer resource that are associated with the single computer resource by the single encoding that is bound to the one or more encapsulated computations.

2. The computer-readable storage medium of claim 1, wherein the encapsulated computations correspond to a collaborative application.

3. The computer-readable storage medium of claim 1, wherein an encapsulated computation does not share state with other encapsulated computations.

4. The computer-readable storage medium of claim 1, wherein said encoding the first association includes instantiating the first resource domain structure, wherein the first resource domain structure includes data indicating the single computer resource.

5. The computer-readable storage medium of claim 4, wherein said encoding further includes indicating the set of one or more policy actions for the single resource.

6. The computer-readable storage medium of claim 5, wherein the first resource domain structure also indicates a set of one or more triggers for the single resource, wherein the one or more triggers correspond to respective actions of the set of policy actions.

7. The computer-readable storage medium of claim 4, wherein the first resource domain structure also indicates that a reservation on the single resource has been established.

8. The computer-readable storage medium of claim 4, wherein said binding the one or more encapsulated computations to a single one of the first and second encodings comprises indicating in a registry each of the encapsulated computations and the single encoding.

9. The computer-readable storage medium of claim 5, wherein the program instructions are further executable to implement a dispenser retrieving the set of policy actions from the first resource domain structure and executing one or more of the policy actions to handle a resource request for the single resource, wherein the dispenser is an isolate that handles requests for the single resource.

10. The computer-readable storage medium of claim 1, wherein said binding the one or more encapsulated computations to a single one of the first and second encodings comprises indicating to each of the encapsulated computations the single encoding.

11. The computer-readable storage medium of claim 1, wherein the single computer resource comprises a physical computer resource or a logical computer resource.

18. The method of claim 1, wherein the bound isolates include the policy imposing isolate.

12. A computer-implemented method, comprising:

encoding a first association between a single computer resource and one or more resource management policies for the single computer resource;

encoding a second association between the single computer resource and one or more resource management policies for the single computer resource, wherein at least one of the one or more resource management policies associated with the single resource by the second encoding is different from the one or more policies associated with the single resource by the first encoding;

binding one or more isolates that are consumers of the single resource to a single one of the first and second encodings, wherein each isolate includes one or more encapsulated computations that do not share state with of other computations; and

executing the one or more isolates in accordance with the one or more resource management policies for the single computer resource that are associated with the single computer resource by the single encoding that is bound to the one or more isolates;

wherein each of the one or more resource management policies associated with the single computer resource by the encoding of the first association is defined by a policy imposing isolate that installs the resource management policy in the encoding of the first association.

13. The method of claim 12, wherein the encoding of the first association indicates the single computer resource.

14. The method of claim 13, wherein the encoding of the first association further indicates a set of one or more policy actions corresponding to the one or more resource management policies, wherein execution of the set of policy actions causes a policy decision to be generated for the single computer resource.

15. The method of claim 13, further comprising a dispenser isolate retrieving the set of policy actions from the encoding of the first association and executing one or more of the policy actions to invoke a policy imposing isolate.

16. The method of claim 13, wherein the encoding of the first association also indicates availability of the single computer resource.

17. The method of claim 13, wherein the encoding of the first association also indicates that a reservation on the single computer resource has been established.

19. The method of claim 12, further comprising indicating the encoding of the first association in a registry of resource management policy-computer resource association encodings.

20. The method of claim 12, further comprising characterizing the single computer resource with generic attributes, and wherein the generic attributes comprise disposable, revocable, reservable, and bounded.

21. The method of claim 12, wherein the one or more isolates correspond to a collaborative application.

22. A machine-readable storage medium storing two or more encodings of a data structure, each encoding of data structure comprising:

a first data field configured to store data indicating a same single computer resource;

a second data field configured to store data indicating one or more resource management policies for the single computer resource, wherein data stored in the second data field of one of the two or more encodings indicates at least one resource management policy for the single computer resource that is different from the one or more resource management policies for the single computer resource indicated by the data stored in the second data field of another one of the two or more encodings;

a third data field configured to store data indicating availability of the single computer resource; and

a fourth data field configured to store data indicating usage of the single computer resource by a set of one or more encapsulated computations bound to the data structure;

wherein the data stored in the first, second, third and fourth data fields of the two or more encodings is accessible by a computer for managing the single computer resource.

23. The storage medium of claim 22, wherein each encoding of the data structure further comprises a fifth data field configured to store data indicating an identifier to identify an association between the single computer resource indicated in the first data field and a resource management policy indicated in the second field.

24. The storage medium of claim 22, wherein the first data field is further configured to store data indicating attributes of the single computer resource.

25. The storage medium of claim 24, wherein the attributes of the single computer resource comprise:

disposable, revocable, reservable, and bounded.

26. The storage medium of claim 22, wherein each encoding of the data structure further comprises a fourth data field configured to store data indicating that a reservation of the single computer resource has been established.

27. A computer-readable storage medium storing program instructions computer-executable to perform operations comprising:

preventing binding of an encapsulated computation that is a consumer of one or more computer resources to two or more resource domain structures that indicate the same computer resource, wherein each of the resource domain structures represents an association between the computer resource and one or more resource management policies, and wherein at least one of the one or more resource management policies associated with the computer resource by a first one of the resource domain structures is different from the one or more policies associated with the computer resource by a second one of the resource domain structures;

allowing binding of an encapsulated computation that is a consumer of one or more computer resources to two or more resource domain structures that indicate different computer resources; and

executing the bound encapsulated computation in accordance with the one or more resource management policies associated with the computer resource by the resource domain structure bound to the encapsulated computation;

wherein each of the resource domain structures identifies its resource domain and indicates a respective computer resource and one or more associated resource management policies.

28. The computer-readable storage medium of claim 27, wherein each of the resource domain structures indicates generic attributes of the respective computer resource, wherein the generic attributes comprise one or more of disposable, revocable, reservable, and bounded.

29. The computer-readable storage medium of claim 27, wherein each of the resource domain structures indicates usage of the respective computer resource.

30. The computer-readable storage medium of claim 27, wherein each of the resource domain structures indicates whether a reservation has been established on the respective computer resource.

31. A computer-readable storage medium comprising program instructions computer-executable to implement:

instantiating two or more instances of a resource domain according to a resource domain class definition, wherein the resource domain class definition provides for associating a single computer resource with one or more resource management policies and for binding one or more isolates to the instance, and wherein each of the two or more resource domain instances associates a same computer resource with a different set of one or more resource management policies for the same computer resource;

binding a set of one or more isolates to one of the two or more resource domain instances, wherein each of the isolates includes a set of one or more encapsulated computations that do not share state with other isolates; and

executing the set of one or more bound isolates in accordance with the one or more resource management policies associated with the same computer resource by the one of the two or more resource domain instances that is bound to the set of one or more isolates;

wherein each of the one or more resource management policies associated with the single computer resource is defined by a policy imposing isolate that installs the resource management policy in one or more of the resource domain instances.

32. The computer-readable storage medium of claim 31, wherein the resource domain class definition provides a routine for determining current usage corresponding to an instance of the resource domain class.

33. The computer-readable storage medium of claim 31, wherein the program instructions are further executable to implement one or more routines for unconsuming computer resources.

34. The computer-readable storage medium of claim 31, wherein the program instructions are further executable to implement one or more routines for attempting to consume a given amount of a computer resource, with the possibility of success or failure.

35. The computer-readable storage medium of claim 31, wherein the program instructions are further executable to implement one or more routines for indicating computations bound to each of the two or more resource domain class instances.

36. The computer-readable storage medium of claim 31, wherein the program instructions are further executable to implement regulating association of computations with instances of the resource domain class.

37. The computer-readable storage medium of claim 31, wherein the program instructions are further executable to implement associating resource domain class instances with dispensers that handle resource requests separately from implementation of the single computer resource indicated in each resource domain class instance.

38. An apparatus, comprising:

a memory;

means for representing a first association between a single computer resource and one or more resource management policies for the single computer resource;

means for representing a second association between the single computer resource and one or more resource management policies for the single computer resource, wherein at least one of the one or more resource management policies associated with the single computer resource by the second representation is different from the one or more policies associated with the single resource by the first representation;

means for installing in a first resource domain structure one or more policy actions corresponding to the one or more resource management policies associated with the single computer resource by the first representation;

means for binding one or more isolates that are consumers of the single computer resource to a single one of the first and second representations of the association of the single computer resource and the one or more resource management policies, wherein an isolate includes a set of one or more computations that do not share state with other computations; and

means for executing the one or more isolates in accordance with the one or more resource management policies for the single computer resource that are associated with the single computer resource by the single representation that is bound to the one or more isolates.

39. The apparatus of claim 38, wherein the one or more policy actions provide policy decisions to computer resource requests.

40. The apparatus of claim 39, wherein the one or more resource management policies comprise triggers that gate execution of policy actions.

41. The apparatus of claim 38, further comprising means for indicating usage of the single computer resource.