unikernel/duniverse/ocaml-caqti/caqti/lib-platform-unix/system_sig.ml

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+(* Copyright (C) 2022--2023  Petter A. Urkedal <paurkedal@gmail.com>
+ *
+ * This library is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or (at your
+ * option) any later version, with the LGPL-3.0 Linking Exception.
+ *
+ * This library is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
+ * License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * and the LGPL-3.0 Linking Exception along with this library.  If not, see
+ * <http://www.gnu.org/licenses/> and <https://spdx.org>, respectively.
+ *)
+
+module type S = sig
+  type 'a fiber
+  type stdenv
+
+  module Unix : sig
+    type file_descr
+    val wrap_fd : (file_descr -> 'a fiber) -> Unix.file_descr -> 'a fiber
+    val poll :
+      stdenv: stdenv ->
+      ?read: bool -> ?write: bool -> ?timeout: float ->
+      file_descr -> (bool * bool * bool) fiber
+  end
+
+  module Preemptive : sig
+    val detach : ('a -> 'b) -> 'a -> 'b fiber
+    val run_in_main : (unit -> 'a fiber) -> 'a
+  end
+
+end