Supporting multiple late binding objects with the same identifier

• US 7,246,361 B1
• Filed: 03/20/2003
• Issued: 07/17/2007
• Est. Priority Date: 03/20/2003
• Status: Expired due to Fees

• Current Assignee: Intuit, Inc.
• Original Assignee: Intuit, Inc.
• Inventors: Davidson, Harold R., Scalora, Michael, Smith, Steven
• Primary Examiner(s): Thomson; William
• Assistant Examiner(s): Ho; Andy
• Application Number:
  US10/394,384
• Time in Patent Office: 1,580 Days
• Field of Search: 719/331, 719/332
• US Class Current: 719/332
• CPC Class Codes: G06F 9/45516 Runtime code conversion or optimisation

Abstract

Support is provided for multiple late binding objects with a same identifier, in an operating environment that only supports registration of a single late binding object with the same identifier. Each of a plurality of processes is associated with one of a plurality of late binding objects, such that at least two processes are each associated with a separate late binding object having the same identifier. Responsive to one of the plurality of processes attempting to access a late binding object by its identifier, a determination is made as to which late binding object is associated with the process. The associated late binding object is made available to the process.

Claims

1. In an operating environment that only supports a single late binding object with a same identifier, a computer implemented method for supporting multiple late binding objects with the same identifier, the method comprising:

associating each of a plurality of processes with one of a plurality of late binding objects, such that at least two of the processes are each associated with separate late binding objects having the same identifier;

responsive to one of the processes attempting to access a late binding object by its identifier, determining which late binding object is associated with the process; and

making the associated late binding object available to the process;

wherein associating each of a plurality of processes with one of a plurality of late binding objects having a same identifier further comprises creating a separate object table for each process, each object table containing at least an identifier and a location of each late binding associated with the process.

2. The method of claim 1 further comprising:

executing a late binding object instantiation routine that is not a component of the operating environment;

determining, by the late binding object instantiation routine, which process attempted to access the late binding object;

determining, by the late binding object instantiation routine, which late binding object is associated with the process; and

making the associated late binding object available to the process by the late binding object instantiation routine.

3. The method of claim 1, further comprising:

intercepting a call to a late binding object instantiation routine that is a component of the operating environment, the call being a request by a process to access a late binding object by its identifier;

responsive to intercepting the call, executing a system call wrapper; and

determining, by the system call wrapper, whether the intercepted call is one for which multiple late binding objects with the same identifier are supported.

4. The method of claim 3 further comprising:

responsive to determining that the intercepted call is one for which multiple late binding objects with the same identifier are supported, performing the operations of;

executing a late binding object instantiation routine that is not a component of the operating environment;

determining, by the late binding object instantiation routine, which process attempted to access the late binding object;

determining, by the late binding object instantiation routine, which late binding object is associated with the process; and

making the associated late binding object available to the process by the late binding object instantiation routine.

5. The method of claim 3 further comprising:

responsive to determining that the intercepted call is one for which multiple late binding objects with the same identifier are not supported, returning control to the intercepted operating environment late binding object instantiation routine.

6. The method of claim 1, further comprising:

registering a proxy late binding object with the operating environment, such that a process attempting to access a late binding object by its identifier calls the proxy late binding object;

determining, by the proxy late binding object, which process attempted to access the late binding object;

determining, by the proxy late binding object, which late binding object is associated with the process; and

making the associated late binding object available to the process by the proxy late binding object.

7. The method of claim 1, wherein associating each of a plurality of processes with one of a plurality of late binding objects having a same identifier further comprises:

creating a global object table containing, for each process of the plurality, at least an identifier and location of each late binding object associated with the process.

8. The method of claims 1, 2, 4 or 6 wherein making the associated late binding available to the process further comprises:

executing a protocol used by the operating environment in order to access the late binding object.

9. The method of claim 8, further comprising:

loading a dynamic link library in which the late binding object resides; and

using a published entry point to negotiate instantiation of the late binding object.

10. The method of claim 1, 2, 4 or 6 wherein determining which late binding object is associated with the process further comprises:

accessing an object table associated with the process, the object table containing at least an identifier and location of each late binding object associated with the process.

11. The method of claim 1, 2, 4 or 6 wherein determining which late binding object is associated with the process further comprises:

accessing a global object table containing, for each process of the plurality, at least an identifier and location of each late binding object associated with the process.

12. The method of claim 2 or 4 wherein associating each of a plurality of processes with one of a plurality of late binding objects having a same identifier further comprises:

maintaining, by the late binding object instantiation routine, for each process of the plurality, at least an identifier and location of each late binding object associated with the process.

13. The method of claim 2, 4 or 6 wherein determining which process attempted to access the late binding object further comprises:

utilizing operating system services to determine which process is active.

14. The method of claim 1 or 7 wherein the location of each late binding object associated with the process further comprises:

a relative reference from the process to a dynamic link library in which the late binding object resides.

15. A computer program product for supporting multiple late binding objects with a same identifier in an operating environment that only supports a single late binding object with the same identifier, the computer program product comprising:

program code for associating each of a plurality of processes with one of a plurality of late binding objects, such that at least two of the processes are each associated with separate late binding objects having the same identifier;

program code for determining which late binding object is associated with a process, responsive to one of the processes attempting to access a late binding object by its identifier;

program code for making the associated late binding object available to the process;

program code for creating a separate object table for each process, each object table containing at least an identifier and a location of each late binding associated with the process; and

a computer readable medium on which the program codes are stored.

16. The computer program product of claim 15 further comprising:

program code comprising a late binding object instantiation routine that is not a component of the operating environment, comprising the program code for determining which late binding object is associated with the process responsive to one of the processes attempting to access a late binding object by its identifier, the program code for making the associated late binding object available to the process, and program code for determining which process attempted to access the late binding object; and

program code for executing the late binding object instantiation routine.

17. The computer program product of claim 15 further comprising:

program code for intercepting a call to a late binding object instantiation routine that is a component of the operating environment, the call being a request by a process to access a late binding object by its identifier;

program code for executing a system call wrapper, responsive to intercepting the call; and

program code comprising a system call wrapper, comprising program code for determining whether the intercepted call is one for which multiple late binding objects with the same identifier are supported.

18. The computer program product of claim 17 wherein the program code comprising the system call wrapper further comprises:

program code for, responsive to determining that the intercepted call is one for which multiple late binding objects with the same identifier are supported, executing a late binding object instantiation routine that is not a component of the operating environment; and

wherein the computer program product further comprises;

program code comprising the late binding object instantiation routine that is not a component of the operating environment, comprising the program code for determining which late binding object is associated with the process responsive to one of the processes attempting to access a late binding object by its identifier, the program code for making the associated late binding object available to the process, and program code for determining which process attempted to access the late binding object.

19. The computer program product of claim 17 wherein the program code comprising the system call wrapper further comprises:

program code for, responsive to determining that the intercepted call is one for which multiple late binding objects with the same identifier are not supported, returning control to the intercepted operating environment late binding object instantiation routine.

20. The computer program product of claim 15, further comprising:

program code for registering a proxy late binding object with the operating environment, such that a process attempting to access a late binding object by its identifier calls the proxy late binding object; and

program code comprising the proxy late binding object, comprising the program code for determining which late binding object is associated with the process responsive to one of the processes attempting to access a late binding object by its identifier, the program code for making the associated late binding object available to the process, and program code for determining which process attempted to access the late binding object.

21. The computer program product of claim 15, further comprising:

program code for creating a global object table containing, for each process of the plurality, at least an identifier and location of each late binding object associated with the process.

22. A computer system for supporting multiple late binding objects with a same identifier in an operating environment that only supports a single late binding object with the same identifier, the computer system having a memory comprising:

a software portion for associating each of a plurality of processes with one of a plurality of late binding objects, such that at least two of the processes are each associated with separate late binding objects having the same identifier;

a software portion for determining which late binding object is associated with a process, responsive to one of the processes attempting to access a late binding object by its identifier;

a software portion for creating a separate object table for each process, each object table containing at least an identifier and a location of each late binding associated with the process; and

a software portion for making the associated late binding object available to the process.

23. The computer system of claim 22 further comprising:

a software portion comprising a late binding object instantiation routine that is not a component of the operating environment, comprising the software portion for determining which late binding object is associated with the process responsive to one of the processes attempting to access a late binding object by its identifier, the software portion for making the associated late binding object available to the process, and a software portion for determining which process attempted to access the late binding object; and

a software portion for executing the late binding object instantiation routine.

24. The computer system of claim 22 further comprising:

a software portion for intercepting a call to a late binding object instantiation routine that is a component of the operating environment, the call being a request by a process to access a late binding object by its identifier;

a software portion for executing a system call wrapper, responsive to intercepting the call; and

a software portion comprising a system call wrapper, comprising a software portion for determining whether the intercepted call is one for which multiple late binding objects with the same identifier are supported.

25. The computer system of claim 24 wherein the software portion comprising the system call wrapper further comprises:

a software portion for, responsive to determining that the intercepted call is one for which multiple late binding objects with the same identifier are supported, executing a late binding object instantiation routine that is not a component of the operating environment; and

wherein the computer system further comprises;

a software portion comprising the late binding object instantiation routine that is not a component of the operating environment, comprising the software portion for determining which late binding object is associated with the process responsive to one of the processes attempting to access a late binding object by its identifier, the software portion for making the associated late binding object available to the process, and a software portion for determining which process attempted to access the late binding object.

26. The computer system of claim 24 wherein the software portion comprising the system call wrapper further comprises:

a software portion for, responsive to determining that the intercepted call is one for which multiple late binding objects with the same identifier are not supported, returning control to the intercepted operating environment late binding object instantiation routine.

27. The computer system of claim 22, further comprising:

a software portion for registering a proxy late binding object with the operating environment, such that a process attempting to access a late binding object by its identifier calls the proxy late binding object; and

a software portion comprising the proxy late binding object, comprising the software portion for determining which late binding object is associated with the process responsive to one of the processes attempting to access a late binding object by its identifier, the software portion for making the associated late binding object available to the process, and a software portion for determining which process attempted to access the late binding object.

28. The computer system of claim 22, further comprising:

a software portion for creating a global object table containing, for each process of the plurality, at least an identifier and location of each late binding object associated with the process.

29. In an operating environment that only supports a single late binding object with a same identifier, a computer implemented method for supporting multiple late binding objects with the same identifier, the method comprising:

associating each of a plurality of primary processes with one of a plurality of late binding objects, such that at least two of the primary processes are each associated with separate late binding objects having the same identifier;

responsive to an auxiliary process, associated with one of the primary processes, attempting to access a late binding object by its identifier and an indication of its associated primary process, determining which late binding object is associated with the primary process; and

making the late binding object associated with the primary process available to the auxiliary process;

wherein associating each of a plurality of primary processes with one of a plurality of late binding objects further comprises creating a separate object table for each primary process, each object table containing at least an identifier and a location of each late binding associated with the primary process.