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(************************************************************************)
(* v * The Coq Proof Assistant / The Coq Development Team *)
(* <O___,, * INRIA - CNRS - LIX - LRI - PPS - Copyright 1999-2015 *)
(* \VV/ **************************************************************)
(* // * This file is distributed under the terms of the *)
(* * GNU Lesser General Public License Version 2.1 *)
(************************************************************************)
open Util
open System
type state = Lib.frozen * Summary.frozen
let summary_of_state = snd
let freeze ~marshallable =
(Lib.freeze ~marshallable, Summary.freeze_summaries ~marshallable)
let unfreeze (fl,fs) =
Lib.unfreeze fl;
Summary.unfreeze_summaries fs
let (extern_state,intern_state) =
let ensure_suffix f = CUnix.make_suffix f ".coq" in
let (raw_extern, raw_intern) =
extern_intern Coq_config.state_magic_number in
(fun s ->
let s = ensure_suffix s in
raw_extern s (freeze ~marshallable:`Yes)),
(fun s ->
let s = ensure_suffix s in
let paths = Loadpath.get_paths () in
unfreeze (with_magic_number_check (raw_intern paths) s);
Library.overwrite_library_filenames s)
(* Rollback. *)
let with_state_protection f x =
let st = freeze ~marshallable:`No in
try
let a = f x in unfreeze st; a
with reraise ->
let reraise = Errors.push reraise in
(unfreeze st; iraise reraise)
let with_state_protection_on_exception = Future.transactify
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