From 80757f9491c72ee262a5910e0b3b02e95b1e5f2a Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Bj=C3=B6rn=20Gustavsson?= Date: Fri, 4 Dec 2015 12:15:40 +0100 Subject: Use 'rand' instead of the obsolete 'random' module In most cases, we don't have to seed the random number generator, as the rand:uniform/1 takes care about that itself. --- lib/kernel/src/global.erl | 20 +++++++------------- 1 file changed, 7 insertions(+), 13 deletions(-) (limited to 'lib/kernel') diff --git a/lib/kernel/src/global.erl b/lib/kernel/src/global.erl index dcabeb5e49..0c73ead7c5 100644 --- a/lib/kernel/src/global.erl +++ b/lib/kernel/src/global.erl @@ -2068,23 +2068,17 @@ get_known() -> gen_server:call(global_name_server, get_known, infinity). random_sleep(Times) -> - case (Times rem 10) of - 0 -> erase(random_seed); - _ -> ok - end, - case get(random_seed) of - undefined -> - _ = random:seed(erlang:phash2([erlang:node()]), - erlang:monotonic_time(), - erlang:unique_integer()), - ok; - _ -> ok - end, + _ = case Times rem 10 of + 0 -> + _ = rand:seed(exsplus); + _ -> + ok + end, %% First time 1/4 seconds, then doubling each time up to 8 seconds max. Tmax = if Times > 5 -> 8000; true -> ((1 bsl Times) * 1000) div 8 end, - T = random:uniform(Tmax), + T = rand:uniform(Tmax), ?trace({random_sleep, {me,self()}, {times,Times}, {t,T}, {tmax,Tmax}}), receive after T -> ok end. -- cgit v1.2.3 From 51f1e296e7d8709df6324f78e365446a22201cf1 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Bj=C3=B6rn=20Gustavsson?= Date: Thu, 10 Dec 2015 14:57:40 +0100 Subject: kernel test: Replace 'random' with 'rand' --- lib/kernel/test/file_name_SUITE.erl | 6 +++--- lib/kernel/test/gen_tcp_echo_SUITE.erl | 9 +-------- lib/kernel/test/global_SUITE.erl | 2 +- lib/kernel/test/inet_SUITE.erl | 3 +-- lib/kernel/test/inet_res_SUITE.erl | 2 +- lib/kernel/test/zlib_SUITE.erl | 6 +++--- 6 files changed, 10 insertions(+), 18 deletions(-) (limited to 'lib/kernel') diff --git a/lib/kernel/test/file_name_SUITE.erl b/lib/kernel/test/file_name_SUITE.erl index 32006d893e..4c422c9e0a 100644 --- a/lib/kernel/test/file_name_SUITE.erl +++ b/lib/kernel/test/file_name_SUITE.erl @@ -159,7 +159,7 @@ normalize(suite) -> normalize(doc) -> ["Check that filename normalization works"]; normalize(Config) when is_list(Config) -> - random:seed({1290,431421,830412}), + rand:seed(exsplus, {1290,431421,830412}), try ?line UniMode = file:native_name_encoding() =/= latin1, if @@ -845,7 +845,7 @@ conv(L) -> rand_comp_decomp(Max) -> - N = random:uniform(Max), + N = rand:uniform(Max), L = [ rand_decomp() || _ <- lists:seq(1,N) ], LC = [ A || {A,_} <- L], LD = lists:flatten([B || {_,B} <- L]), @@ -855,7 +855,7 @@ rand_comp_decomp(Max) -> rand_decomp() -> BT = bigtup(), SZ = tuple_size(BT), - element(random:uniform(SZ),BT). + element(rand:uniform(SZ),BT). bigtup() -> {{192,[65,768]}, {200,[69,768]}, diff --git a/lib/kernel/test/gen_tcp_echo_SUITE.erl b/lib/kernel/test/gen_tcp_echo_SUITE.erl index 6dcb21758b..b5ed16ec34 100644 --- a/lib/kernel/test/gen_tcp_echo_SUITE.erl +++ b/lib/kernel/test/gen_tcp_echo_SUITE.erl @@ -442,14 +442,7 @@ random_char(Chars) -> lists:nth(uniform(length(Chars)), Chars). uniform(N) -> - case get(random_seed) of - undefined -> - {X, Y, Z} = time(), - random:seed(X, Y, Z); - _ -> - ok - end, - random:uniform(N). + rand:uniform(N). put_int32(X, big, List) -> [ (X bsr 24) band 16#ff, diff --git a/lib/kernel/test/global_SUITE.erl b/lib/kernel/test/global_SUITE.erl index 73ee86eba4..c0e24e17fe 100644 --- a/lib/kernel/test/global_SUITE.erl +++ b/lib/kernel/test/global_SUITE.erl @@ -2931,7 +2931,7 @@ sync_until(LogFile) -> timer:sleep(Time). shuffle(L) -> - [E || {_, E} <- lists:keysort(1, [{random:uniform(), E} || E <- L])]. + [E || {_, E} <- lists:keysort(1, [{rand:uniform(), E} || E <- L])]. sync_0(suite) -> []; sync_0(doc) -> diff --git a/lib/kernel/test/inet_SUITE.erl b/lib/kernel/test/inet_SUITE.erl index 5ba06bb032..d64a52fc2c 100644 --- a/lib/kernel/test/inet_SUITE.erl +++ b/lib/kernel/test/inet_SUITE.erl @@ -868,7 +868,6 @@ gethostnative_control_2(Seq, Interval, Delay, Cnt, N, Hosts) -> ?line Lookupers = [spawn_link( fun () -> - random:seed(), lookup_loop(Hosts, Delay, Tag, Parent, Cnt, Hosts) end) || _ <- lists:seq(1, N)], @@ -929,7 +928,7 @@ lookup_loop([H|Hs], Delay, Tag, Parent, Cnt, Hosts) -> Parent ! {Tag,Error} end, receive - after random:uniform(Delay) -> + after rand:uniform(Delay) -> lookup_loop(Hs, Delay, Tag, Parent, Cnt-1, Hosts) end. diff --git a/lib/kernel/test/inet_res_SUITE.erl b/lib/kernel/test/inet_res_SUITE.erl index ace4ccb8bd..6e575c2f95 100644 --- a/lib/kernel/test/inet_res_SUITE.erl +++ b/lib/kernel/test/inet_res_SUITE.erl @@ -120,7 +120,7 @@ ns_init(ZoneDir, PrivDir, DataDir) -> {unix,_} -> PortNum = case {os:type(),os:version()} of {{unix,solaris},{M,V,_}} when M =< 5, V < 10 -> - 11895 + random:uniform(100); + 11895 + rand:uniform(100); _ -> {ok,S} = gen_udp:open(0, [{reuseaddr,true}]), {ok,PNum} = inet:port(S), diff --git a/lib/kernel/test/zlib_SUITE.erl b/lib/kernel/test/zlib_SUITE.erl index 6aaa024a82..77fdabe73c 100644 --- a/lib/kernel/test/zlib_SUITE.erl +++ b/lib/kernel/test/zlib_SUITE.erl @@ -912,7 +912,7 @@ smp(Config) -> FnAList = lists:map(fun(F) -> {F,?MODULE:F({get_arg,Config})} end, Funcs), - Pids = [spawn_link(?MODULE, worker, [random:uniform(9999), + Pids = [spawn_link(?MODULE, worker, [rand:uniform(9999), list_to_tuple(FnAList), self()]) || _ <- lists:seq(1,NumOfProcs)], @@ -925,7 +925,7 @@ smp(Config) -> worker(Seed, FnATpl, Parent) -> io:format("smp worker ~p, seed=~p~n",[self(),Seed]), - random:seed(Seed,Seed,Seed), + rand:seed(exsplus, {Seed,Seed,Seed}), worker_loop(100, FnATpl), Parent ! self(). @@ -933,7 +933,7 @@ worker_loop(0, _FnATpl) -> large_deflate_do(), % the time consuming one as finale ok; worker_loop(N, FnATpl) -> - {F,A} = element(random:uniform(size(FnATpl)),FnATpl), + {F,A} = element(rand:uniform(tuple_size(FnATpl)), FnATpl), ?MODULE:F(A), worker_loop(N-1, FnATpl). -- cgit v1.2.3