Embedded Systems Design, 2nd Edition

Real-time operating systems 263

Local procedure call (LPC)

This is responsible for co-ordinating system calls from an

application and the WIN32 subsystem. Depending on the type of

call and to some extent its memory needs, it is possible for

applications to be routed directly to the local procedure call (LPC)

without going through the WIN32 subsystem.

The kernel

The kernel is responsible for ensuring the correct operation

of all the processes that are running within the system. It provides

the synchronisation and scheduling that the system needs. Syn-

chronisation support takes the form of allowing threads to wait

until a specific resource is available such ...