Adding functionality to existing code at exits
First Claim
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1. A method implemented on one or more machines for modifying existing object code, the method comprising:
- adding exit code to said existing object code, said existing object code includes a method; and
adding a new entry in an exceptions data store for said existing object code, said new entry points to said exit code, said adding a new entry includes adding said new entry for said method, said new entry indicates a range of indices corresponding to said method, said new entry includes a reference to said exit code and said new entry indicates that said new entry pertains to multiple types of exceptions.
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Abstract
New code is added to existing object code in order to add new functionality. For example, a call to start a profiler function can be added at the beginning of a Java method and a call to stop the profiler function can be added at the exits of the Java method. A method may have many different exits. To insure that the profiler process is stopped regardless of which exit is performed, the byte code and exception table are modified.
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Citations
41 Claims
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1. A method implemented on one or more machines for modifying existing object code, the method comprising:
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adding exit code to said existing object code, said existing object code includes a method; and adding a new entry in an exceptions data store for said existing object code, said new entry points to said exit code, said adding a new entry includes adding said new entry for said method, said new entry indicates a range of indices corresponding to said method, said new entry includes a reference to said exit code and said new entry indicates that said new entry pertains to multiple types of exceptions. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. One or more processor readable hardware storage devices having processor readable code embodied thereon, said processor readable code for programming one or more processors to perform a method comprising:
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adding exit code to existing object code, said existing object code includes a method, and adding a new entry in an exceptions data store pointing to said exit code, said adding a new entry includes adding said new entry for said method, said new entry indicates a range of indices corresponding to said method, said new entry includes a reference to said exit code and said new entry indicates that said new entry pertains to multiple types of exceptions. - View Dependent Claims (22, 23, 24, 25, 26)
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27. A method implemented on one or more machines for adding functionality to existing object code, the method comprising:
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adding new exit functionality to said existing object code, said existing object code includes a method; creating a grouping of all or a portion of said existing object code by modifying said existing object code; and associating said grouping of said existing object code with at least a portion of said new exit functionality that is to be performed if an exception occurs during execution of said grouping of said existing object code, said associating includes adding a new entry into an exceptions data store for said method, said new entry indicates a range of indices corresponding to said method, said new entry includes a reference to said new exit functionality and said new entry indicates that said new entry pertains to multiple types of exceptions. - View Dependent Claims (28, 29, 30, 31, 32, 33, 34, 35)
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36. One or more processor readable hardware storage devices having processor readable code embodied thereon, said processor readable code for programming one or more processors to perform a method comprising:
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adding new exit functionality to existing object code, said existing object code includes a method; creating a grouping of all or part of said existing object code by modifying said existing object code; and associating said new exit functionality as a clean up process for said all or part of said existing object code grouped together, said associating includes adding a new entry into an exceptions data store for said method, said new entry indicates a range of indices corresponding to said original byte code, said new entry includes a reference to said new exit functionality and said new entry indicates that said new entry pertains to multiple types of exceptions. - View Dependent Claims (37, 38, 39)
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40. An apparatus, comprising:
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one or more storage devices; and one or more processors in communication with said one or more storage devices, said one or more processors programmed to perform a method comprising; accessing existing object code, said existing object code includes a method; adding try and finally functionality to said existing object code by modifying said existing object code; and adding a new entry in an exceptions data store for said existing object code, said new entry points to said try and finally functionality, said adding a new entry includes adding said new entry for said method, said new entry indicates a range of indices corresponding to said method, said new entry includes a reference to said try and finally functionality and said new entry indicates that said new entry pertains to multiple types of exceptions. - View Dependent Claims (41)
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Specification