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Copyright © 2011 MLstate
This file is part of OPA.
OPA is free software: you can redistribute it and/or modify it under the
terms of the GNU Affero General Public License, version 3, as published by
the Free Software Foundation.
OPA 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 Affero General Public License for
more details.
You should have received a copy of the GNU Affero General Public License
along with OPA. If not, see <>.
@author Louis Gesbert
open Cps.Ops
module F (Bk: Badop.S) = struct
type database = Bk.database
type transaction = Bk.transaction
type revision = Bk.revision
let transactions = ref 0
let reads = ref 0
let writes = ref 0
let commits = ref 0
let aborts = ref 0
let time_start = ref 0.
let open_database options k =
time_start := Unix.gettimeofday ();
Bk.open_database options @> k
let close_database db k =
let time_running = Unix.gettimeofday () -. !time_start in
Printf.eprintf "Database statistics:\n";
Printf.eprintf "Time running: %.2f seconds\n" time_running;
Printf.eprintf "Transactions: %d started / %d commited / %d aborted / %d discarded\n"
!transactions !commits !aborts (!transactions - !commits - !aborts);
Printf.eprintf "Operations total: %d writes / %d reads\n" !writes !reads;
Printf.eprintf "Operations per transaction: %.2f writes / %.2f reads\n"
(float_of_int !writes /. float_of_int !transactions) (float_of_int !reads /. float_of_int !transactions);
Printf.eprintf "Per second: %.2f transactions / %.2f writes / %.2f reads\n"
(float_of_int !transactions /. time_running)
(float_of_int !writes /. time_running) (float_of_int !reads /. time_running);
Bk.close_database db @> k
let status db k = Bk.status db @> fun st -> Badop.Layer("Stat", st) |> k
module Tr = struct
let start db errk k = incr transactions; Bk.Tr.start db errk @> k
let start_at_revision db rev errk k = incr transactions; Bk.Tr.start_at_revision db rev errk @> k
let prepare tr k = Bk.Tr.prepare tr @> k
let commit tr k = incr commits; Bk.Tr.commit tr @> k
let abort tr k = incr aborts; Bk.Tr.abort tr @> k
type 'which read_op = 'which Bk.read_op
type 'which write_op = 'which Bk.write_op
let read tr path read_op k = incr reads; tr path read_op @> k
let write tr path write_op k = incr writes; Bk.write tr path write_op @> k
let write_list tr path_write_op_list k =
writes := !writes + List.length path_write_op_list;
Bk.write_list tr path_write_op_list @> k
let node_properties db config k = Bk.node_properties db config @> k
module Debug = struct
let revision_to_string = Bk.Debug.revision_to_string
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