query

Description:

public int query (int max_priority, out int timeout_, PollFD[] fds)

Determines information necessary to poll this main loop.

You should be careful to pass the resulting fds array and its length fds.length as-is when calling [ method@GLib.MainContext.check], as this function relies on assumptions made when the array is filled.

You must have successfully acquired the context with [method@GLib.MainContext.acquire] before you may call this function.

Parameters:

this	a main context (if `NULL`, the global-default main context will be used)
max_priority	maximum priority source to check
timeout_	location to store timeout to be used in polling
fds	location to store [struct@GLib.PollFD] records that need to be polled
n_fds	length of `fds`

Returns:

the number of records actually stored in fds, or, if more than fds.length records need to be stored, the number of records that need to be stored