Data storage system having common software environment

摘要

Described are techniques for facilitating communication between code modules. A first code module is provided that makes at least one call using an application programming interface. The application programming interface facilitates communication between the first code module and a target code module and provides support for performing the at least one call from a first execution mode associated with the first code module and a second execution mode associated with the target code module. The application programming interface provides support for user space to user space communication, user space to kernel space communication, kernel space to kernel space communication, and kernel to user space communication. The first execution mode of the first code module and said second execution mode of the target code module are determined. A communication path is established between the code modules in accordance with the first and second execution modes.