module Check_result:sig
..end
thread_safe_check t pre ~timeout
checks the file descriptors for their status and
returns when at least one is available, or the timeout
passes.
thread_safe_check
does not side effect t
. Unlike the rest of the functions in
this module, thread_safe_check
is thread safe.type
t
val sexp_of_t : t -> Sexplib.Sexp.t