What is this OS about?

Phantom is, basically, a virtual machine (VM) working in a huge persistent virtual memory. Part of the VM classes (some classes, called ‘internal’) are implemented in kernel, giving VM code access to low level kernel services. Persistent virtual memory is completely orthogonal to object space and VM (no relation between, for example, object boundary and virtual memory page, etc.) and is implemented so that abrupt computer failure or loss of power leaves system in coherent state. On the application code (VM bytecode) level OS shutdown (either manual or caused by failure) is not even ‘seen’ - applications and their data are ‘never die’, they continue their work after the next OS boot up as if no shutdown ever happened.

Read in full here:

http://phantomos.org/

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