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-rw-r--r--erts/emulator/test/nif_SUITE.erl168
1 files changed, 164 insertions, 4 deletions
diff --git a/erts/emulator/test/nif_SUITE.erl b/erts/emulator/test/nif_SUITE.erl
index 888bf582d8..f45cfa3e4a 100644
--- a/erts/emulator/test/nif_SUITE.erl
+++ b/erts/emulator/test/nif_SUITE.erl
@@ -30,7 +30,7 @@
fin_per_testcase/2, basic/1, reload/1, upgrade/1, heap_frag/1,
types/1, many_args/1, binaries/1, get_string/1, get_atom/1, api_macros/1,
from_array/1, iolist_as_binary/1, resource/1, resource_binary/1, resource_takeover/1,
- threading/1, send/1, send2/1, send_threaded/1, neg/1, is_checks/1,
+ threading/1, send/1, send2/1, send3/1, send_threaded/1, neg/1, is_checks/1,
get_length/1, make_atom/1, make_string/1]).
-export([many_args_100/100]).
@@ -51,7 +51,7 @@
all(suite) ->
[basic, reload, upgrade, heap_frag, types, many_args, binaries, get_string,
get_atom, api_macros, from_array, iolist_as_binary, resource, resource_binary,
- resource_takeover, threading, send, send2, send_threaded, neg, is_checks,
+ resource_takeover, threading, send, send2, send3, send_threaded, neg, is_checks,
get_length, make_atom, make_string].
%%init_per_testcase(_Case, Config) ->
@@ -916,7 +916,164 @@ forwarder(To, N) ->
other_term() ->
{fun(X,Y) -> X*Y end, make_ref()}.
-
+
+send3(doc) -> ["Message sending stress test"];
+send3(Config) when is_list(Config) ->
+ %% Let a number of processes send random message blobs between each other
+ %% using enif_send. Kill and spawn new ones randomly to keep a ~constant
+ %% number of workers running.
+ Seed = now(),
+ io:format("seed: ~p\n",[Seed]),
+ random:seed(Seed),
+ ets:new(nif_SUITE,[named_table,public]),
+ ?line true = ets:insert(nif_SUITE,{send3,0,0,0,0}),
+ timer:send_after(10000, timeout), % Run for 10 seconds
+ SpawnCnt = send3_controller(0, [], [], 20),
+ ?line [{_,Rcv,SndOk,SndFail,Balance}] = ets:lookup(nif_SUITE,send3),
+ io:format("spawns=~p received=~p, sent=~p send-failure=~p balance=~p\n",
+ [SpawnCnt,Rcv,SndOk,SndFail,Balance]),
+ ets:delete(nif_SUITE).
+
+send3_controller(SpawnCnt, [], _, infinity) ->
+ SpawnCnt;
+send3_controller(SpawnCnt0, Mons0, Pids0, Tick) ->
+ receive
+ timeout ->
+ io:format("Timeout. Sending 'halt' to ~p\n",[Pids0]),
+ lists:foreach(fun(P) -> P ! {halt,self()} end, Pids0),
+ lists:foreach(fun(P) -> receive {halted,P} -> ok end end, Pids0),
+ QTot = lists:foldl(fun(P,QSum) ->
+ {message_queue_len,QLen} =
+ erlang:process_info(P,message_queue_len),
+ QSum + QLen
+ end, 0, Pids0),
+ io:format("Total queue length ~p\n",[QTot]),
+ lists:foreach(fun(P) -> P ! die end, Pids0),
+ send3_controller(SpawnCnt0, Mons0, [], infinity);
+ {'DOWN', MonRef, process, _Pid, _} ->
+ Mons1 = lists:delete(MonRef, Mons0),
+ %%io:format("Got DOWN from ~p. Monitors left: ~p\n",[Pid,Mons1]),
+ send3_controller(SpawnCnt0, Mons1, Pids0, Tick)
+ after Tick ->
+ Max = 20,
+ N = length(Pids0),
+ PidN = random:uniform(Max),
+ %%io:format("N=~p PidN=~p Pids0=~p\n", [N,PidN,Pids0]),
+ case PidN > N of
+ true ->
+ {NewPid,Mon} = spawn_opt(fun send3_proc/0, [link,monitor]),
+ lists:foreach(fun(P) -> P ! {is_born,NewPid} end, Pids0),
+ ?line Balance = ets:lookup_element(nif_SUITE,send3,5),
+ Inject = (Balance =< 0),
+ case Inject of
+ true -> ok;
+ false -> ets:update_element(nif_SUITE,send3,{5,-1})
+ end,
+ NewPid ! {pids,Pids0,Inject},
+ send3_controller(SpawnCnt0+1, [Mon|Mons0], [NewPid|Pids0], Tick);
+ false ->
+ KillPid = lists:nth(PidN,Pids0),
+ KillPid ! die,
+ Pids1 = lists:delete(KillPid, Pids0),
+ lists:foreach(fun(P) -> P ! {is_dead,KillPid} end, Pids1),
+ send3_controller(SpawnCnt0, Mons0, Pids1, Tick)
+ end
+ end.
+
+send3_proc() ->
+ %%io:format("Process ~p spawned\n",[self()]),
+ send3_proc([self()], {0,0,0}, {1,2,3,4,5}).
+send3_proc(Pids0, Counters={Rcv,SndOk,SndFail}, State0) ->
+ %%io:format("~p: Pids0=~p", [self(), Pids0]),
+ %%timer:sleep(10),
+ receive
+ {pids, Pids1, Inject} ->
+ %%io:format("~p: got ~p Inject=~p\n", [self(), Pids1, Inject]),
+ ?line Pids0 = [self()],
+ Pids2 = [self() | Pids1],
+ case Inject of
+ true -> send3_proc_send(Pids2, Counters, State0);
+ false -> send3_proc(Pids2, Counters, State0)
+ end;
+ {is_born, Pid} ->
+ %%io:format("~p: is_born ~p, got ~p\n", [self(), Pid, Pids0]),
+ send3_proc([Pid | Pids0], Counters, State0);
+ {is_dead, Pid} ->
+ Pids1 = lists:delete(Pid,Pids0),
+ %%io:format("~p: is_dead ~p, got ~p\n", [self(), Pid, Pids1]),
+ send3_proc(Pids1, Counters, State0);
+ {blob, Blob0} ->
+ %%io:format("~p: blob ~p\n", [self(), Blob0]),
+ State1 = send3_new_state(State0, Blob0),
+ send3_proc_send(Pids0, {Rcv+1,SndOk,SndFail}, State1);
+ die ->
+ %%io:format("Process ~p terminating, stats = ~p\n",[self(),Counters]),
+ {message_queue_len,Dropped} = erlang:process_info(self(),message_queue_len),
+ _R = ets:update_counter(nif_SUITE,send3,
+ [{2,Rcv},{3,SndOk},{4,SndFail},{5,1-Dropped}]),
+ %%io:format("~p: dies R=~p\n", [self(), R]),
+ ok;
+ {halt,Papa} ->
+ Papa ! {halted,self()},
+ io:format("~p halted\n",[self()]),
+ receive die -> ok end,
+ io:format("~p dying\n",[self()])
+ end.
+
+send3_proc_send(Pids, {Rcv,SndOk,SndFail}, State0) ->
+ To = lists:nth(random:uniform(length(Pids)),Pids),
+ Blob = send3_make_blob(),
+ State1 = send3_new_state(State0,Blob),
+ case send3_send(To, Blob) of
+ true ->
+ send3_proc(Pids, {Rcv,SndOk+1,SndFail}, State1);
+ false ->
+ send3_proc(Pids, {Rcv,SndOk,SndFail+1}, State1)
+ end.
+
+
+send3_make_blob() ->
+ case random:uniform(20)-1 of
+ 0 -> {term,[]};
+ N ->
+ MsgEnv = alloc_msgenv(),
+ repeat(N bsr 1,
+ fun(_) -> grow_blob(MsgEnv,other_term(),random:uniform(1 bsl 20))
+ end, void),
+ case (N band 1) of
+ 0 -> {term,copy_blob(MsgEnv)};
+ 1 -> {msgenv,MsgEnv}
+ end
+ end.
+
+send3_send(Pid, Msg) ->
+ %% 90% enif_send and 10% normal bang
+ case random:uniform(10) of
+ 1 -> send3_send_bang(Pid,Msg);
+ _ -> send3_send_nif(Pid,Msg)
+ end.
+send3_send_nif(Pid, {term,Blob}) ->
+ %%io:format("~p send term nif\n",[self()]),
+ send_term(Pid, {blob, Blob}) =:= 1;
+send3_send_nif(Pid, {msgenv,MsgEnv}) ->
+ %%io:format("~p send blob nif\n",[self()]),
+ send3_blob(MsgEnv, Pid, blob) =:= 1.
+
+send3_send_bang(Pid, {term,Blob}) ->
+ %%io:format("~p send term bang\n",[self()]),
+ Pid ! {blob, Blob},
+ true;
+send3_send_bang(Pid, {msgenv,MsgEnv}) ->
+ %%io:format("~p send blob bang\n",[self()]),
+ Pid ! {blob, copy_blob(MsgEnv)},
+ true.
+
+send3_new_state(State, Blob) ->
+ case random:uniform(5+2) of
+ N when N =< 5-> setelement(N, State, Blob);
+ _ -> State % Don't store blob
+ end.
+
neg(doc) -> ["Negative testing of load_nif"];
neg(Config) when is_list(Config) ->
TmpMem = tmpmem(),
@@ -1070,10 +1227,13 @@ send_new_blob(_,_) -> ?nif_stub.
alloc_msgenv() -> ?nif_stub.
clear_msgenv(_) -> ?nif_stub.
grow_blob(_,_) -> ?nif_stub.
+grow_blob(_,_,_) -> ?nif_stub.
send_blob(_,_) -> ?nif_stub.
+send3_blob(_,_,_) -> ?nif_stub.
send_blob_thread(_,_,_) -> ?nif_stub.
join_send_thread(_) -> ?nif_stub.
-
+copy_blob(_) -> ?nif_stub.
+send_term(_,_) -> ?nif_stub.
nif_stub_error(Line) ->
exit({nif_not_loaded,module,?MODULE,line,Line}).
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-01 10:21:47 +0000