Instead of relying on DEBUG_DEV for most debugging commands, which is
limiting, let's condition them to expert mode. Only one ("debug dev exec")
remains conditionned to DEBUG_DEV because it can have a security implication
on the system. The commands are not listed unless "expert-mode on" was first
entered on the CLI :
> expert-mode on
> help
debug dev close <fd> : close this file descriptor
debug dev delay [ms] : sleep this long
debug dev exec [cmd] ... : show this command's output
debug dev exit [code] : immediately exit the process
debug dev hex <addr> [len]: dump a memory area
debug dev log [msg] ... : send this msg to global logs
debug dev loop [ms] : loop this long
debug dev panic : immediately trigger a panic
debug dev stream ... : show/manipulate stream flags
debug dev tkill [thr] [sig] : send signal to thread
> debug dev stream
Usage: debug dev stream { <obj> <op> <value> | wake }*
<obj> = {strm | strm.f | sif.f | sif.s | sif.x | sib.f | sib.s | sib.x |
txn.f | req.f | req.r | req.w | res.f | res.r | res.w}
<op> = {'' (show) | '=' (assign) | '^' (xor) | '+' (or) | '-' (andnot)}
<value> = 'now' | 64-bit dec/hex integer (0x prefix supported)
'wake' wakes the stream asssigned to 'strm' (default: current)
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