Who uses RTSJ?
#rtsj
RTSJ was firstly implemented by TimeSys. This implementation (i.e., a RTSJ-compliant VM and a RTSJ reference implementation) supports all versions of Linux. Later, Aicas GmbH provided a different RTSJ implementation in their JamaicaVM, supporting a wide range of real-time operating systems, such as Linux, VxWorks and QNX. In addition, there are also other virtual machines which are compliant with RTSJ, e.g., jRate, OVM and Aero JVM.
Among these VMs, JamaicaVM provides hard real-time guarantees and is the mostly adopted VM for executing RTSJ applications. Currently, JamaicaVM supports RTSJ V1.0.2 and is working towards RTSJ 2.0 implementation based on Java 8.
https://eprints.whiterose.ac.uk/159681/1/TECS_From_Java_to_Real_Time_Java_A_Model_Driven_Methodology.pdf
