nanonext (version 0.5.4)

unresolved: Query if an Aio is Unresolved

Description

Query whether an Aio or Aio value remains unresolved. Unlike call_aio, this function does not wait for completion.

Usage

unresolved(aio)

Value

Logical TRUE or FALSE.

Arguments

aio

An Aio (object of class 'sendAio' or 'recvAio'), or Aio value stored in $result, $raw or $data as the case may be.

Details

Returns TRUE for unresolved Aios or Aio values, FALSE otherwise. Suitable for use in control flow statements such as while or if.

Note: querying resolution may cause a previously unresolved Aio to resolve.

Examples

s1 <- socket("pair", listen = "inproc://nanonext")
aio <- send_aio(s1, "test", timeout = 100)

while (unresolved(aio)) {
  # do stuff before checking resolution again
  cat("unresolved\n")
  s2 <- socket("pair", dial = "inproc://nanonext")
  Sys.sleep(0.01)
}

unresolved(aio)

close(s1)
close(s2)