diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/remoteCounter.ml | 52 | ||||
| -rw-r--r-- | lib/remoteCounter.mli | 31 |
2 files changed, 0 insertions, 83 deletions
diff --git a/lib/remoteCounter.ml b/lib/remoteCounter.ml deleted file mode 100644 index 9ea751eef9..0000000000 --- a/lib/remoteCounter.ml +++ /dev/null @@ -1,52 +0,0 @@ -(************************************************************************) -(* * The Coq Proof Assistant / The Coq Development Team *) -(* v * Copyright INRIA, CNRS and contributors *) -(* <O___,, * (see version control and CREDITS file for authors & dates) *) -(* \VV/ **************************************************************) -(* // * This file is distributed under the terms of the *) -(* * GNU Lesser General Public License Version 2.1 *) -(* * (see LICENSE file for the text of the license) *) -(************************************************************************) - -type 'a getter = unit -> 'a -type 'a installer = ('a getter) -> unit - -type remote_counters_status = (string * Obj.t) list - -let counters : remote_counters_status ref = ref [] - -let (!!) x = !(!x) - -let new_counter ~name a ~incr ~build = - assert(not (List.mem_assoc name !counters)); - let data = ref (ref a) in - counters := (name, Obj.repr data) :: !counters; - let m = Mutex.create () in - let mk_thsafe_local_getter f () = - (* - slaves must use a remote counter getter, not this one! *) - (* - in the main process there is a race condition between slave - managers (that are threads) and the main thread, hence the mutex *) - if Flags.async_proofs_is_worker () then - CErrors.anomaly(Pp.str"Slave processes must install remote counters."); - let x = CThread.with_lock m ~scope:f in - build x in - let mk_thsafe_remote_getter f () = - CThread.with_lock m ~scope:f in - let getter = ref(mk_thsafe_local_getter (fun () -> !data := incr !!data; !!data)) in - let installer f = - if not (Flags.async_proofs_is_worker ()) then - CErrors.anomaly(Pp.str"Only slave processes can install a remote counter."); - getter := mk_thsafe_remote_getter f in - (fun () -> !getter ()), installer - -let backup () = !counters - -let snapshot () = - List.map (fun (n,v) -> n, Obj.repr (ref (ref !!(Obj.obj v)))) !counters - -let restore l = - List.iter (fun (name, data) -> - assert(List.mem_assoc name !counters); - let dataref = Obj.obj (List.assoc name !counters) in - !dataref := !!(Obj.obj data)) - l diff --git a/lib/remoteCounter.mli b/lib/remoteCounter.mli deleted file mode 100644 index 42d1f8a8d1..0000000000 --- a/lib/remoteCounter.mli +++ /dev/null @@ -1,31 +0,0 @@ -(************************************************************************) -(* * The Coq Proof Assistant / The Coq Development Team *) -(* v * Copyright INRIA, CNRS and contributors *) -(* <O___,, * (see version control and CREDITS file for authors & dates) *) -(* \VV/ **************************************************************) -(* // * This file is distributed under the terms of the *) -(* * GNU Lesser General Public License Version 2.1 *) -(* * (see LICENSE file for the text of the license) *) -(************************************************************************) - -(* Remote counters are *global* counters for fresh ids. In the master/slave - * scenario, the slave installs a getter that asks the master for a fresh - * value. In the scenario of a slave that runs after the death of the master - * on some marshalled data, a backup of all counters status should be taken and - * restored to avoid reusing ids. - * Counters cannot be created by threads, they must be created once and forall - * as toplevel module declarations. *) - - -type 'a getter = unit -> 'a -type 'a installer = ('a getter) -> unit - -val new_counter : name:string -> - 'a -> incr:('a -> 'a) -> build:('a -> 'b) -> 'b getter * 'b installer - -type remote_counters_status -val backup : unit -> remote_counters_status -(* like backup but makes a copy so that further increment does not alter - * the snapshot *) -val snapshot : unit -> remote_counters_status -val restore : remote_counters_status -> unit |