System, method, and article of manufacture for dynamically profiling memory transfers in a program

A computer program product for recording memory transfers required by an executing application, comprising the steps of:

• (a) computer code for dividing a memory of a system hosting an application into micropages;
• (b) computer code for maintaining a memory map of the application which records which functions have valid copies of micropages;
• (c) computer code for checking the map to determine which functions have a valid copy of the data when a current function reads for a micropage;
• (d) computer code for recording a transfer of the data from another function to the current function if the current function does not have a valid copy of the data;
• (e) computer code for updating the map to reflect that the current function has a valid copy of the micropage if the data is transferred from another function;
• (f) computer code for recording a write to a micropage;
• (g) computer code for updating the map to reflect that the current function has the only valid copy of a micropage when a write to the micropage occurs;
• and
• (h) computer code for outputting a report of data transfers among the functions.

A system for recording memory transfers required by an executing application, comprising the steps of:

• (a) logic for dividing a memory of a system hosting an application into micropages;
• (b) logic for maintaining a memory map of the application which records which functions have valid copies of micropages;
• (c) logic for checking the map to determine which functions have a valid copy of the data when a current function reads for a micropage;
• (d) logic for recording a transfer of the data from another function to the current function if the current function does not have a valid copy of the data;
• (e) logic for updating the map to reflect that the current function has a valid copy of the micropage if the data is transferred from another function;
• (f) logic for recording a write to a micropage;
• (g) logic for updating the map to reflect that the current function has the only valid copy of a micropage when a write to the micropage occurs;
• and
• (h) logic for outputting a report of data transfers among the functions.