Generic wrapper scheme

A method of testing target code using a generic wrapper function that performs a changed behavior, the generic wrapper function called by plural functions in the target code, the method comprising:

• receiving target code as input;
• identifying functions in the target code;
• receiving an association of a generic wrapper function with at least two of the functions in the target code, wherein the generic wrapper function comprises a first behavior associated with a first one of the at least two functions and a second behavior associated with a second one of the at least two functions;
• creating instrumented code comprising inserting code into the target code;
• and
• executing the instrumented code, wherein
• during execution, upon a call to one of the at least two functions, the inserted code directs execution to the generic wrapper function, and wherein the generic wrapper function determines which of the first behavior and the second behavior to execute based on a parameter property identified in one or more descriptor data structures of the at least two functions.

A computer system comprising:

• a central processing unit coupled to memory;
• plural programs comprising:
• a target code;
• an instrumentation program comprising:
• instructions for identifying functions in the target code;
• instructions for associating plural identified functions with a selected generic wrapper function, wherein the genetic wrapper function comprises a first behavior associated with a first one of the plural identified functions and a second behavior associated with a second one of the plural identified functions;
• instructions for producing instrumented code comprising a call to the selected generic wrapper function from each identified function,
• wherein the call comprises a descriptor describing a context of the call and a function identifier;
• and
• instructions for executing the instrumented code and the generic wrapper function, wherein the generic wrapper function determines which of the first behavior and the second behavior to execute based on the function identifier.

A computer readable medium comprising:

• a data structure comprising:
• a parameter descriptor describing a parameter of an instrumented function;
• a data type descriptor describing the data type of the parameter;
• a function descriptor associating the parameter descriptor with the instrumented function;
• and
• instructions configured to cause a computer to provide the data structure to a generic wrapper function to determine a changed behavior to implement for the instrumented function based at least in part on the function descriptor in the data structure or the parameter descriptor in the data structure, wherein the generic wrapper function comprises a first behavior associated with the instrumented function and a second behavior associated with another function.