diff options
Diffstat (limited to 'erts/emulator/test/nif_SUITE.erl')
| -rw-r--r-- | erts/emulator/test/nif_SUITE.erl | 173 |
1 files changed, 171 insertions, 2 deletions
diff --git a/erts/emulator/test/nif_SUITE.erl b/erts/emulator/test/nif_SUITE.erl index bcea9e3539..05c250125d 100644 --- a/erts/emulator/test/nif_SUITE.erl +++ b/erts/emulator/test/nif_SUITE.erl @@ -59,7 +59,9 @@ nif_snprintf/1, nif_internal_hash/1, nif_internal_hash_salted/1, - nif_phash2/1 + nif_phash2/1, + nif_whereis/1, nif_whereis_parallel/1, + nif_whereis_threaded/1, nif_whereis_proxy/1 ]). -export([many_args_100/100]). @@ -96,7 +98,8 @@ all() -> nif_snprintf, nif_internal_hash, nif_internal_hash_salted, - nif_phash2]. + nif_phash2, + nif_whereis, nif_whereis_parallel, nif_whereis_threaded]. groups() -> [{G, [], api_repeaters()} || G <- api_groups()] @@ -134,6 +137,11 @@ init_per_testcase(hipe, Config) -> undefined -> {skip, "HiPE is disabled"}; _ -> Config end; +init_per_testcase(nif_whereis_threaded, Config) -> + case erlang:system_info(threads) of + true -> Config; + false -> {skip, "No thread support"} + end; init_per_testcase(select, Config) -> case os:type() of {win32,_} -> @@ -2791,6 +2799,161 @@ random_pid() -> Processes = erlang:processes(), lists:nth(rand:uniform(length(Processes)), Processes). +%% Test enif_whereis_... + +nif_whereis(Config) when is_list(Config) -> + ensure_lib_loaded(Config), + + RegName = nif_whereis_test_thing, + undefined = erlang:whereis(RegName), + false = whereis_term(pid, RegName), + + Mgr = self(), + Ref = make_ref(), + ProcMsg = {Ref, ?LINE}, + PortMsg = ?MODULE_STRING " whereis hello\n", + + {Pid, Mon} = spawn_monitor(?MODULE, nif_whereis_proxy, [Ref]), + true = register(RegName, Pid), + Pid = erlang:whereis(RegName), + Pid = whereis_term(pid, RegName), + false = whereis_term(port, RegName), + false = whereis_term(pid, [RegName]), + + ok = whereis_send(pid, RegName, {forward, Mgr, ProcMsg}), + ok = receive ProcMsg -> ok end, + + Pid ! {Ref, quit}, + ok = receive {'DOWN', Mon, process, Pid, normal} -> ok end, + undefined = erlang:whereis(RegName), + false = whereis_term(pid, RegName), + + Port = open_port({spawn, echo_drv}, [eof]), + true = register(RegName, Port), + Port = erlang:whereis(RegName), + Port = whereis_term(port, RegName), + false = whereis_term(pid, RegName), + false = whereis_term(port, [RegName]), + + ok = whereis_send(port, RegName, PortMsg), + ok = receive {Port, {data, PortMsg}} -> ok end, + + port_close(Port), + undefined = erlang:whereis(RegName), + false = whereis_term(port, RegName), + ok. + +nif_whereis_parallel(Config) when is_list(Config) -> + ensure_lib_loaded(Config), + + %% try to be at least a little asymetric + NProcs = trunc(3.7 * erlang:system_info(schedulers)), + NSeq = lists:seq(1, NProcs), + Names = [list_to_atom("nif_whereis_proc_" ++ integer_to_list(N)) + || N <- NSeq], + Mgr = self(), + Ref = make_ref(), + + NotReg = fun(Name) -> + erlang:whereis(Name) == undefined + end, + PidReg = fun({Name, Pid, _Mon}) -> + erlang:whereis(Name) == Pid andalso whereis_term(pid, Name) == Pid + end, + RecvDown = fun({_Name, Pid, Mon}) -> + receive {'DOWN', Mon, process, Pid, normal} -> true + after 1500 -> false end + end, + RecvNum = fun(N) -> + receive {N, Ref} -> true + after 1500 -> false end + end, + + true = lists:all(NotReg, Names), + + %% {Name, Pid, Mon} + Procs = lists:map( + fun(N) -> + Name = lists:nth(N, Names), + Prev = lists:nth((if N == 1 -> NProcs; true -> (N - 1) end), Names), + Next = lists:nth((if N == NProcs -> 1; true -> (N + 1) end), Names), + {Pid, Mon} = spawn_monitor( + ?MODULE, nif_whereis_proxy, [{N, Ref, Mgr, [Prev, Next]}]), + true = register(Name, Pid), + {Name, Pid, Mon} + end, NSeq), + + true = lists:all(PidReg, Procs), + + %% tell them all to 'fire' as fast as we can + [P ! {Ref, send_proc} || {_, P, _} <- Procs], + + %% each gets forwarded through two processes + true = lists:all(RecvNum, NSeq), + true = lists:all(RecvNum, NSeq), + + %% tell them all to 'quit' by name + [N ! {Ref, quit} || {N, _, _} <- Procs], + true = lists:all(RecvDown, Procs), + true = lists:all(NotReg, Names), + ok. + +nif_whereis_threaded(Config) when is_list(Config) -> + ensure_lib_loaded(Config), + + RegName = nif_whereis_test_threaded, + undefined = erlang:whereis(RegName), + + Ref = make_ref(), + {Pid, Mon} = spawn_monitor(?MODULE, nif_whereis_proxy, [Ref]), + true = register(RegName, Pid), + + {ok, ProcThr} = whereis_thd_lookup(pid, RegName), + {ok, Pid} = whereis_thd_result(ProcThr), + + Pid ! {Ref, quit}, + ok = receive {'DOWN', Mon, process, Pid, normal} -> ok end, + + Port = open_port({spawn, echo_drv}, [eof]), + true = register(RegName, Port), + + {ok, PortThr} = whereis_thd_lookup(port, RegName), + {ok, Port} = whereis_thd_result(PortThr), + + port_close(Port), + ok. + +%% exported to be spawned by MFA by whereis tests +nif_whereis_proxy({N, Ref, Mgr, Targets} = Args) -> + receive + {forward, To, Data} -> + To ! Data, + nif_whereis_proxy(Args); + {Ref, quit} -> + ok; + {Ref, send_port} -> + Msg = ?MODULE_STRING " whereis " ++ integer_to_list(N) ++ "\n", + lists:foreach( + fun(T) -> + ok = whereis_send(port, T, Msg) + end, Targets), + nif_whereis_proxy(Args); + {Ref, send_proc} -> + lists:foreach( + fun(T) -> + ok = whereis_send(pid, T, {forward, Mgr, {N, Ref}}) + end, Targets), + nif_whereis_proxy(Args) + end; +nif_whereis_proxy(Ref) -> + receive + {forward, To, Data} -> + To ! Data, + nif_whereis_proxy(Ref); + {Ref, quit} -> + ok + end. + %% The NIFs: lib_version() -> undefined. call_history() -> ?nif_stub. @@ -2866,6 +3029,12 @@ demonitor_process_nif(_,_) -> ?nif_stub. compare_monitors_nif(_,_) -> ?nif_stub. monitor_frenzy_nif(_,_,_,_) -> ?nif_stub. +%% whereis +whereis_send(_Type,_Name,_Msg) -> ?nif_stub. +whereis_term(_Type,_Name) -> ?nif_stub. +whereis_thd_lookup(_Type,_Name) -> ?nif_stub. +whereis_thd_result(_Thd) -> ?nif_stub. + %% maps is_map_nif(_) -> ?nif_stub. get_map_size_nif(_) -> ?nif_stub. |