PollFunc

typealias PollFunc = (ufds: PollFD, <Error class: unknown class>, timeout: Int) -> Int

Specifies the type of function passed to g_main_context_set_poll_func(). The semantics of the function should match those of the poll() system call.

param ufds an array of #GPollFD elements
param nfsd the number of elements in @ufds
param timeout the maximum time to wait for an event of the file descriptors. A negative value indicates an infinite timeout.
return the number of #GPollFD elements which have events or errors reported, or -1 if an error occurred.