Wei Liu writes ("[RFC PATCH 4/8] libxl: wait up to 5s in libxl_console_exec for
xenconsoled"):
> Wait until the tty node is available before exec'ing xenconsole.
You shouldn't poll. We have a perfectly good xenstore watch
mechanism.
You could either:
(a) do something ad-hoc with poll(), the xenstore fd, etc.
(b) make libxl_console_exec by a weird special case which starts an AO
but always synchronously (ie, doesn't take an ao_how), and then use
the existing libxl__xswait and a callback.
Doing the latter would mean that you would already have done half (a
third?) of the work for a future libxl_console_get_fd function.
Ian.
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