Abstract: In embodiments of the invention, modules or other application components of a software application are instrumented. That is, monitoring code is inserted into application components that forms the software application. The inserted instructions, for example, can cause data such as execution times, call return times, resources used, or other performance metrics to be recorded for that application component and optionally reported. Advantageously, embodiments of the invention enable features of the instrumentation to be turned OFF (i.e., deactivated) where the performance of systems executing the instrumented software is outside of predetermined operational limits.

Abstract: An improved method and apparatus for transferring data in a CD-ROM system. The CD-ROM system includes a buffer manager for identifying the capacity of a buffer memory used to store data from a disc. The buffer manager controls the transfer of data into and out of the buffer memory. Each time a sector of data is transferred from a disc into the buffer memory, a counter is incremented to track the amount of data in the buffer memory. If the counter equals the capacity of the buffer memory, the transfer of data from the disc is halted. Further transfer of data is not allowed until buffer memory is available.