nextstream retrieves the currently stored L'Ecuyer-CMRG RNG stream
for the specified compute profile and advances it to the next stream.
nextget retrieves the specified item from the specified compute
profile.
Arguments
- .compute
[default 'default'] character value for the compute profile to use (each compute profile has its own independent set of daemons).
- x
character value of item to retrieve. One of ‘n’ (number of dispatcher daemons), ‘pid’ (dispatcher process ID), ‘urls’ (URLs dispatcher is listening at) or ‘tls’ (the stored client TLS configuration for use by daemons).
Value
For nextstream: a length 7 integer vector, as given by
.Random.seed when the L'Ecuyer-CMRG RNG is in use (may be passed
directly to the ‘rs’ argument of daemon), or else
NULL if a stream has not yet been created.
For nextget: the requested item, or else NULL if not present.
Details
These functions are exported for use by packages extending mirai with
alternative launchers of daemon processes.
For nextstream: This function should be called for its return value
when required. The function also has the side effect of automatically
advancing the stream stored within the compute profile. This ensures that the
next recursive stream is returned when the function is called again.
Examples
if (interactive()) {
# Only run examples in interactive R sessions
daemons(1L)
nextstream()
nextstream()
nextget("pid")
nextget("urls")
daemons(0)
}