Automatic client-server complier

• US 5,761,512 A
• Filed: 12/27/1995
• Issued: 06/02/1998
• Est. Priority Date: 12/27/1995
• Status: Expired due to Term

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Greenstein, Paul Gregory, Breslau, Franklin Charles, Rodell, John Ted
• Primary Examiner(s): Oberley, Alvin E.
• Assistant Examiner(s): ROSENHOLM, ROBERT STEPHEN
• Application Number:
  US08/579,460
• Time in Patent Office: 888 Days
• Field of Search: 395/703, 395/705
• US Class Current: 717/140
• CPC Class Codes: G06F 8/47 Retargetable compilers

Abstract

In an object-oriented computer system having multiple execution environments, a source code of a computer program is provided having multiple classes therein. The classes have affinities for execution environment type characteristics defined therewith. For each class, an execution environments is determined that satisfies the affinities of the class, and the class is compiled for the determined execution environment. As examples, affinities may include those directed toward processors, operating systems, user interfaces and software resources.

Claims

1. In a computing system, including a plurality of execution environments, a method of automatically compiling an object defined by a class, said method comprising:

(a) providing said object defined by said class to said computing system, said class having an affinity defined therewith or an affinity derived implicitly by said computing system, said affinity corresponding to an execution environment-type characteristic, which is a run-time property for execution;

(b) automatically determining, by the computing system, a subset of said plurality of execution environments satisfying said affinity;

(c) selecting an execution environment from said subset; and

(d) automatically compiling said object defined by said class for said selected execution environment.

2. The method of claim 1, further comprising providing said computing system with an affinity resource table, said affinity resource table including a plurality of affinity entries, each affinity entry of said plurality of affinity entries including an affinity value and at least one execution environment having said affinity value, and wherein said automatically determining comprises looking-up said affinity in said affinity values of said affinity resource table to determine said subset of said plurality of execution environments.

3. The method of claim 2, wherein said providing said object defined by said class further comprises providing said class having a plurality of affinities, and wherein said automatically determining further comprises looking up each affinity of said plurality of affinities in said affinity values of said affinity resource table, and said selecting comprises selecting said selected execution environment as a common execution environment to each subset of said execution environments satisfying each affinity value of said plurality of affinity values looked up within said affinity resource table.

4. The method of claim 3, wherein if multiple execution environments are common to each affinity value looked-up in said affinity resource table, said method further comprises randomly selecting one execution environment of said multiple execution environments common to each affinity value looked-up in said affinity resource table as said selected execution environment.

5. The method of claim 2, where said affinity comprises one of a processor type affinity, an operating system type affinity, a user interface type affinity, a printed output type affinity, and a database type affinity.

6. The method of claim 1, further comprising providing said computing system with a system environment table, said system environment table having a plurality of system entries, at least one system entry having an execution environment and at least one compilation parameter for said execution environment, and wherein said automatically compiling comprises looking-up said selected execution environment in said system environment table, and compiling said object defined by said class using said at least one compilation parameter corresponding to said selected execution environment within said system environment table.

7. The method of claim 6, wherein said at least one compilation parameter includes at least one of a processor type and an operating system.

8. The method of claim 7, wherein said automatically compiling further comprises setting a selectable target compiler for a target comprising said at least one of said processor type and said operating system and compiling said class using said selectable target compiler.

9. The method of claim 1, wherein said providing further comprises providing multiple objects, each defined by at least one class, a first class of said at least one class having an affinity, said affinity corresponding to an execution environment-type characteristic, and wherein said automatically determining further comprises, for each first class, automatically determining an execution environment of said plurality of execution environments satisfying the affinity of said first class, wherein a selected execution environment for said first class is determined, and wherein said automatically compiling further comprises, for each first class, automatically compiling said object defined by said first class for its selected execution environment.

10. The method of claim 9, wherein said automatically compiling comprises compiling at least two objects of said multiple objects for different execution environments.

11. The method of claim 1, wherein said computing system includes a visual development environment, and wherein said providing said class having said affinity includes said visual development environment presenting a first icon and a second icon to a user, said first icon corresponding to said class and said second icon corresponding to said affinity, said second icon being droppable by said user on said first icon to associate said affinity with said class.

12. In a computing system including a plurality of execution environments, a system used in automatically compiling an object defined by a class, said system, comprising:

means for providing said object defined by said class to said computing system, said class having an affinity defined therewith or affinity derived implicitly by said computing system, said affinity corresponding to an execution environment-type characteristic, which is a run-time property for execution;

means for automatically determining, by said computing system, a subset of said plurality of execution environments satisfying said affinity;

means for selecting execution environment from said subset; and

means for automatically compiling said object defined by said class for said selected execution environment.

13. The system of claim 12, further comprising means for providing said computing system with an affinity resource table, said affinity resource table including a plurality of affinity entries, each affinity entry of said plurality of affinity entries including an affinity value and at least one execution environment having said affinity value, and wherein said means for automatically determining comprises means for looking-up said affinity in said affinity values of said affinity resource table to determine said subset of said plurality of execution environments.

14. The system of claim 13, wherein said means for providing said object defined by said class further comprises means for providing said class having a plurality of affinities, and wherein said means for automatically determining further comprises means for looking up each affinity of said plurality of affinities in said affinity values of said affinity resource table, and said means for selecting comprises means for selecting said selected execution environment as a common execution environment to each subset of said execution environments satisfying each affinity value of said plurality of affinity values looked up within said affinity resource table.

15. The system of claim 14, wherein if multiple execution environments are common to each affinity value looked-up in said affinity resource table, said system further comprises means for randomly selecting one execution environment of said multiple execution environments common to each affinity value looked-up in said affinity resource table as said selected execution environment.

16. The system of claim 13, where said affinity comprises one of a processor type affinity, an operating system type affinity, a user interface type affinity, a printed output type affinity, and a database type affinity.

17. The system of claim 12, further comprising means for providing said computing system with a system environment table, said system environment table having a plurality of system entries, at least one system entry having an execution environment and at least one compilation parameter for said execution environment, and wherein said means for automatically compiling comprises means for looking-up said selected execution environment in said system environment table, and means for compiling said object defined by said class using said at least one compilation parameter corresponding to said selected execution environment within said system environment table.

18. The system of claim 17, wherein said at least one compilation parameter includes at least one of a processor type and an operating system.

19. The system of claim 18, wherein said means for automatically compiling further comprises means for setting a selectable target compiler for a target comprising said at least one of said processor type and said operating system and means for compiling said class using said selectable target compiler.

20. The system of claim 12, wherein said means for providing further comprises means for providing multiple objects, each defined by at least one class, a first class of said at least one class having an affinity, said affinity corresponding to an execution environment-type characteristic, and wherein said means for automatically determining further comprises, for each first class, means for automatically determining an execution environment of said plurality of execution environments satisfying the affinity of said first class, wherein a selected execution environment for said class is determined, and wherein said means for automatically compiling further comprises, for each first class, means for automatically compiling said object defined by said first class for its selected execution environment.

21. The system of claim 20, wherein said means for automatically compiling comprises means for compiling at least two objects of said multiple objects for different execution environments.

22. The system of claim 12, wherein said system includes a visual development environment, and means for said visual development environment providing a first icon and a second icon to a user, said first icon corresponding to said class and said second icon corresponding to said affinity, said second icon being droppable by said user on said first icon to associate said affinity with said class.