Abstract: An object code expansion program inserts new instructions and data between preexisting instructions and date of an object code file; offsets are modified to reflect new positions of the preexisting instructions and data. For each item of preexisting object code (instructions or data), the following steps are performed: making a new code block comprising any desired new instructions and the item, and storing it as new object code; tracking the location of the item and the new code block within the new object code; and tracking items that contain inter-item offsets. Then, each inter-item offset is updated using the new location of the item or new code block, as required. Finally, offsets in symbol tables and relocation structures are updated with the new location of the item.

Abstract: According to a computer-implemented approach for renting items to customers, customers specify what items to rent using item selection criteria separate from deciding when to receive the specified items. According to the approach, customers provide item selection criteria to a provider provides the items indicated by the item selection criteria to customer over a delivery channel. The provider may be either centralized or distributed depending upon the requirements of a particular application. A “Max Out” approach allows up to a specified number of items to be rented simultaneously to customers. A “Max Turns” approach allows up to a specified number of item exchanges to occur during a specified period of time. The “Max Out” and “Max Turns” approaches may be used together or separately with a variety of subscription methodologies.

Abstract: Systems and methods for remotely monitoring the execution of computer programs are provided. Monitoring instructions are added the computer program so that during execution of the program, data may be collected regarding the program execution. The collected data may be automatically sent to a remote system or site for analysis. The monitoring instructions create little or no performance impact on the client yet provide valuable information to the developer of the program. Additionally, the monitoring instructions may be changes during computer program development.

Abstract: Systems and methods for remotely monitoring the execution of computer programs are provided. Monitoring instructions are added the computer program so that during execution of the program, data may be collected regarding the program execution. The collected data may be automatically sent to a remote system or site for analysis. The monitoring instructions create little or no performance impact on the client yet provide valuable information to the developer of the program. Additionally, the monitoring instructions may be changes during computer program development.

Abstract: An object code expansion program inserts new instructions and data between preexisting instructions and data of an object code file; offsets are modified to reflect new positions of the preexisting instructions and data. For each item of preexisting object code (instructions or data), the following steps are performed: making a new code block comprising any desired new instructions and the item, and storing it as new object code; tracking the location of the item and the new code block within the new object code; and tracking items that contain inter-item offsets. Then, each inter-item offset is updated using the new location of the item or new code block, as required. Finally, offsets in symbol tables and relocation structures are updated with the new location of the item. This expansion program is used to add instructions to object code files of a second program, to monitor substantially all of the memory accesses of the second program.

Abstract: An object code expansion profiler equips a program for execution profiling by preprocessing the object code files of the program so as to add profiling monitoring code to the beginning of all or substantially all functions. The preprocessing includes, for each function, the steps of grouping the function's instructions into basic blocks, counting the number of cycles required to execute the instructions of the basic block, and inserting special monitoring code with the basic block. The special monitoring code is executed each time the basic block is executed, and updates the profiling information to reflect the number of cycles required to execute the basic block. Special handling is provided for profiling calls to the Operating System (OS). The resultant profiling information is converted into a call graph image most useful for human users.

Abstract: An object code expansion profiler equips a program for execution profiling by preprocessing the object code files of the program so as to add profiling monitoring code to the beginning of all or substantially all functions. The preprocessing includes, for each function, the steps of grouping the function's instructions into basic blocks, counting the number of cycles required to execute the instructions of the basic block, and inserting special monitoring code with the basic block. The special monitoring code is executed each time the basic block is executed, and updates the profiling information to reflect the number of cycles required to execute the basic block. Special handling is provided for profiling calls to the Operating System (OS). The resultant profiling information is converted into a call graph image most useful for human users.

Abstract: Systems and methods for remotely monitoring the execution of computer programs are provided. Monitoring instructions are added the computer program so that during execution of the program, data may be collected regarding the program execution. The collected data may be automatically sent to a remote system or site for analysis. The monitoring instructions create little or no performance impact on the client yet provide valuable information to the developer of the program. Additionally, the monitoring instructions may be changes during computer program development.

Abstract: An object code expansion program inserts new instructions and data between preexisting instructions and data of an object code file; offsets are modified to reflect new positions of the preexisting instructions and data. For each item of preexisting object code (instructions or data), the following steps are performed: making a new code block comprising any desired new instructions and the item, and storing it as new object code; tracking the location of the item and the new code block within the new object code; and tracking items that contain inter-item offsets. Then, each inter-item offset is updated using the new location of the item or new code block, as required. Finally, offsets in symbol tables and relocation structures are updated with the new location of the item.This expansion program is used to add instructions to object code files of a second program, to monitor substantially all of the memory accesses of the second program.

Abstract: An object code expansion program inserts new instructions and data between preexisting instructions and data of an object code file; offsets are modified to reflect new positions of the preexisting instructions and data. For each item of preexisting object code (instructions or data), the following steps are performed: making a new code block comprising any desired new instructions and the item, and storing it as new object code; tracking the location of the item and the new code block within the new object code; and tracking items that contain inter-item offsets. Then, each inter-item offset is updated using the new location of the item or new code block, as required. Finally, offsets in symbol tables and relocation structures are updated with the new location of the item. This expansion program is used to add instructions to object code files of a second program, to monitor substantially all of the memory accesses of the second program.

Abstract: An object code expansion program inserts new instructions and data between preexisting instructions and data of an object code file; offsets are modified to reflect new positions of the preexisting instructions and data. For each item of preexisting object code (instructions or data), the following steps are performed: making a new code block comprising any desired new instructions and the item, and storing it as new object code; tracking the location of the item and the new code block within the new object code; and tracking items that contain inter-item offsets. Then, each inter-item offset is updated using the new location of the item or new code block, as required. Finally, offsets in symbol tables and relocation structures are updated with the new location of the item.This expansion program is used to add instructions to object code files of a second program, to monitor substantially all of the memory accesses of the second program.

Abstract: An object code expansion program inserts new instructions and data between preexisting instructions and data of an object code file; offsets are modified to reflect new positions of the preexisting instructions and data. For each item of preexisting object code (instructions or data), the following steps are performed: making a new code block comprising any desired new instructions and the item, and storing it as new object code; tracking the location of the item and the new code block within the new object code; and tracking items that contain inter-item offsets. Then, each inter-item offset is updated using the new location of the item or new code block, as required. Finally, offsets in symbol tables and relocation structures are updated with the new location of the item.This expansion program is used to add instructions to object code files of a second program, to monitor substantially all of the memory accesses of the second program.