ChorusOS 4.0 Migration Guide

4.4 System Calls

The following system calls have been removed from the ChorusOS 4.0 operating system:

Table 4-1 Obsolete System Calls


Obsolete ChorusOS 3.2 System Call	Reason for removal	Equivalent ChorusOS 4.0 System Call
`actorPersistency()`, `actorPersistCap()`, `actorRestartCapability()`	The revised hot restart interface no longer relies on persistent actor support at kernel level.	None.
`rgnPhysMap()`	The ChorusOS 4.0 operating system does not support device memory on demand mapping in the user address space.	None.
`sysBench()`	Superseded.	This call has been superseded by the sysTimerStartFreerun(2K) and sysTimerReadCounter(2K)system calls.
`svProfHandler()`	Superseded.	This call has been superseded by the sysTimerStartPeriodic(2K) system call.
`svMaskAll()`, `svUnmask()`, `svUnmaskAll()`	Superseded.	The supervisor calls have been superseded by the imsIntrMask_f(9DKI) and imsIntrUnmask_f(9DKI) system calls.
`svSysIo()`	The system console driver is implemented by the external `dbgBsp` component.	None.