Ghost network state machine - design

Kernel:
internal:
	select bitsets
	hash of all links by object, hence all machines in the network
	run method
	timeout system

links out:
	trigger can_read (for each registered FD)
	trigger can_write (for each registered FD) - might be redirected to error or null

	for each registered signal: signal

links in:
	struct register_fd {
	       int fd,	   
	       trigger* can_read,
	       trigger* can_write
	}
	    register: register a FD

	struct register_signal {
	       
	}

Read:

links in:
	trigger can_read
links out:
	trigger eof
	trigger error
	buffer data

none 


Merge:

useful "or" for triggers