graham_k wrote:
Sorry to be such a n00b, but can someone please explain WikiPedia's statement
that "eCos (embedded configurable operating system) is an open source,
royalty-free, real-time operating system intended for embedded systems and
applications which need only one process with multiple threads"?
Why only one process? And presumably the thread are what I would think of as
processes in "normal" terminology?
You can say. More common word is task.
I guess that what I am asking here is whether this is just a matter of
semantics (what's a process? what's a thread?) or if there are some
technical restrictions ...
Sometimes it is, depends on OS' documentation terminology, traditionally
it all used to be processes.
Processes are supposed to be have their own address space and are
usually isolated (by means of MMU). On the other hand, threads share
common address space. Modern GP OSes such (Linux, etc) implement both -
a process can consist of more threads.
With this respect, since all eCos tasks share common address space they
are considered threads.
Thank you very much in advance for any clarification.
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