The Design and Implementation of IPCMechanism in Mach Operating System

Aim To design the home -made embedded real time operating system COSIX V2.O/RT developing platform,the Mach operating system interprocess communication mech- anism based on object-oriented technique was analyzed. Methods Not only being the trans-mission channel,but also being the abstract of all the entity in the Mach operating system.ports play the most important role in Mach IPC(interprocess communication).Ports were de-vided into 4 types: system ports, privileged ports user ports and kernel ports.All these ports'creation,run and kill processes and the message transmission in IPC were analyzed.ResultsMach IPC has been widely used in Client/Server run environment.Packing and unpacking inmessage transmission must restrict the run efficiency of IPC Conclusion To enhance IPC runefficiency and at the same time enhance the operating system's run efficiency,some of thesystem calls should be rewritten and implemented with trapped mode in kernel.In the end the aim of designing real time operating system is achieved.