81 lines
2 KiB
Erlang
81 lines
2 KiB
Erlang
%% -------------------------------------------------------------------
|
|
%%
|
|
%% bdberl: Port Driver Thrash tests
|
|
%% Copyright (c) 2008 The Hive. All rights reserved.
|
|
%%
|
|
%% -------------------------------------------------------------------
|
|
-module(thrash_SUITE).
|
|
|
|
-compile(export_all).
|
|
|
|
all() ->
|
|
[test_thrash].
|
|
|
|
-define(PROCS, 10).
|
|
|
|
test_thrash(_Config) ->
|
|
%% Spin up 15 processes (async thread pool is 10)
|
|
start_procs(?PROCS),
|
|
wait_for_finish(?PROCS).
|
|
|
|
start_procs(0) ->
|
|
ok;
|
|
start_procs(Count) ->
|
|
spawn_link(?MODULE, thrash_run, [self()]),
|
|
start_procs(Count-1).
|
|
|
|
wait_for_finish(0) ->
|
|
ok;
|
|
wait_for_finish(Count) ->
|
|
receive
|
|
{finished, Pid} ->
|
|
io:format("~p is done; ~p remaining.\n", [Pid, Count-1]),
|
|
wait_for_finish(Count-1)
|
|
end.
|
|
|
|
thrash_run(Owner) ->
|
|
%% Seed the RNG
|
|
{A1, A2, A3} = now(),
|
|
random:seed(A1, A2, A3),
|
|
|
|
%% Open up a port and database
|
|
{ok, 0} = bdberl:open("thrash", btree),
|
|
|
|
%% Start thrashing
|
|
thrash_incr_loop(Owner, 1000).
|
|
|
|
thrash_incr_loop(Owner, 0) ->
|
|
Owner ! {finished, self()};
|
|
thrash_incr_loop(Owner, Count) ->
|
|
ct:print("~p\n", [Count]),
|
|
%% Choose random key
|
|
Key = random:uniform(1200),
|
|
|
|
%% Start a txn that will read the current value of the key and increment by 1
|
|
F = fun() ->
|
|
case bdberl:get(0, Key, [rmw]) of
|
|
not_found ->
|
|
Value = 0;
|
|
|
|
{ok, Value} ->
|
|
Value
|
|
end,
|
|
ok = bdberl:put(0, Key, Value)
|
|
end,
|
|
ok = do_txn(F, 0),
|
|
thrash_incr_loop(Owner, Count-1).
|
|
|
|
do_txn(F, Count) ->
|
|
case bdberl:txn_begin() of
|
|
ok ->
|
|
case catch(F()) of
|
|
{'EXIT', _Reason} ->
|
|
io:format("Txn attempt ~p failed; retrying", [Count]),
|
|
do_txn(F, Count+1);
|
|
_Other ->
|
|
ok = bdberl:txn_commit()
|
|
end;
|
|
{error, _Reason} ->
|
|
do_txn(F, Count+1)
|
|
end.
|