Waits for up to
timeout microseconds for condition to become true on this.
If the condition is met, true is returned.
cancellable is cancelled before the condition is met, or if
timeout is reached before the condition is met, then
false is returned and throws is set appropriately (
g_io_error_cancelled or g_io_error_timed_out).
a IOCondition mask to wait for
the maximum time (in microseconds) to wait, 0 to not block, or -1 to block indefinitely
true if the condition was met, false otherwise