RSX handler for transferring large blocks of data between tasks
Thomas Kozlowski, Michael A. Oothoudt, D. Daniels · OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information) · 1979
A pseudo-device handler was written which allows the transfer of up to 64K byte blocks of data between tasks. The basic mechanism is as follows: one task issues a read QIO which references another task to which the data are to be sent. This second task issues a write QIO referencing the first task. The handler resolves the two QIO's may be issued in any sequence and with any separation in time. Such a handler is useful in an environment in which it is important to conserve active page registers and virtual address space.