Technical Utility: Query if an Aio is Unresolved

Query whether an Aio or list of Aios remains unresolved. This is an experimental technical utility version of unresolved not intended for ordinary use. Provides a method of querying the busy status of an Aio without altering its state in any way i.e. not attempting to retrieve the result or message.

Usage

.unresolved(x)

Arguments

x

an Aio or list of Aios (objects of class ‘sendAio’, ‘recvAio’ or ‘ncurlAio’).

Value

Logical TRUE if ‘aio’ is an unresolved Aio or else FALSE, or if ‘aio’ is a list, the integer number of unresolved Aios in the list.

Details

.unresolved() is not intended to be used for ‘recvAio’ returned by a signalling function, in which case unresolved must be used in all cases.