From 16a2717d25096fcbd07b252e775b66b6fbb6d2bd Mon Sep 17 00:00:00 2001
From: gareuselesinge
Date: Tue, 20 Aug 2013 12:43:42 +0000
Subject: Universe counters on slaves are in sync with master

Simple framework for remote counters.  The slaves ask
the master for a fresh value.  On the master the thread
manager answers with a bunch of fresh values (so that further
requests can be immediately satisfied).
Remote counters are guarded with a mutex on the master,
because all slave managers as well as the master thread
can access the counter at the same time.

I know the name sucks.  These counters are remote for the slaves,
and local for the master.  I'm open to suggestions...

git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@16713 85f007b7-540e-0410-9357-904b9bb8a0f7
---
 kernel/univ.ml  | 4 +++-
 kernel/univ.mli | 1 +
 2 files changed, 4 insertions(+), 1 deletion(-)

(limited to 'kernel')

diff --git a/kernel/univ.ml b/kernel/univ.ml
index e6752bb9eb..ce9d9c4192 100644
--- a/kernel/univ.ml
+++ b/kernel/univ.ml
@@ -851,7 +851,9 @@ let fresh_level =
   let n = ref 0 in
   fun () -> incr n; UniverseLevel.Level (!n, Names.DirPath.empty)
 
-let fresh_local_univ () = Atom (fresh_level ())
+let fresh_local_univ, set_remote_fresh_local_univ =
+  RemoteCounter.new_counter 0 ~incr:((+) 1)
+    ~build:(fun n -> Atom (UniverseLevel.Level (n, Names.DirPath.empty)))
 
 (* Miscellaneous functions to remove or test local univ assumed to
    occur only in the le constraints *)
diff --git a/kernel/univ.mli b/kernel/univ.mli
index 6b64ca8e47..7511769c41 100644
--- a/kernel/univ.mli
+++ b/kernel/univ.mli
@@ -129,6 +129,7 @@ val sort_universes : universes -> universes
 (** {6 Support for sort-polymorphic inductive types } *)
 
 val fresh_local_univ : unit -> universe
+val set_remote_fresh_local_univ : universe RemoteCounter.installer
 
 val solve_constraints_system : universe option array -> universe array ->
   universe array
-- 
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