R: Query if an Aio is Unresolved

unresolved

R Documentation

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)

Arguments

aio

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

Details

Suitable for use in control flow statements such as while or if.

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

Value

Logical TRUE if 'aio' is an unresolved Aio or Aio value, or FALSE otherwise.

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")
  msleep(20)
}

unresolved(aio)

close(s1)