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-rw-r--r--lib/kernel/src/auth.erl4
-rw-r--r--lib/kernel/src/dist_util.erl6
-rw-r--r--lib/kernel/src/global.erl18
-rw-r--r--lib/kernel/src/inet_db.erl3
-rw-r--r--lib/kernel/src/inet_res.erl14
-rw-r--r--lib/kernel/src/kernel.app.src2
-rw-r--r--lib/kernel/src/os.erl14
-rw-r--r--lib/kernel/src/pg2.erl11
8 files changed, 47 insertions, 25 deletions
diff --git a/lib/kernel/src/auth.erl b/lib/kernel/src/auth.erl
index eda35147d3..dbc486bee1 100644
--- a/lib/kernel/src/auth.erl
+++ b/lib/kernel/src/auth.erl
@@ -370,8 +370,8 @@ check_cookie1([], Result) ->
%% Creates a new, random cookie.
create_cookie(Name) ->
- {_, S1, S2} = now(),
- Seed = S2*10000+S1,
+ Seed = abs(erlang:monotonic_time()
+ bxor erlang:unique_integer()),
Cookie = random_cookie(20, Seed, []),
case file:open(Name, [write, raw]) of
{ok, File} ->
diff --git a/lib/kernel/src/dist_util.erl b/lib/kernel/src/dist_util.erl
index b127fe2e33..6b510bd0c3 100644
--- a/lib/kernel/src/dist_util.erl
+++ b/lib/kernel/src/dist_util.erl
@@ -298,7 +298,7 @@ shutdown(_Module, _Line, _Data, Reason) ->
exit(Reason).
%% Use this line to debug connection.
%% Set net_kernel verbose = 1 as well.
-%% exit({Reason, ?MODULE, _Line, _Data, erlang:now()}).
+%% exit({Reason, ?MODULE, _Line, _Data, erlang:timestamp()}).
flush_down() ->
@@ -373,7 +373,9 @@ gen_digest(Challenge, Cookie) when is_integer(Challenge), is_atom(Cookie) ->
%% gen_challenge() returns a "random" number
%% ---------------------------------------------------------------
gen_challenge() ->
- {A,B,C} = erlang:now(),
+ A = erlang:phash2([erlang:node()]),
+ B = erlang:monotonic_time(),
+ C = erlang:unique_integer(),
{D,_} = erlang:statistics(reductions),
{E,_} = erlang:statistics(runtime),
{F,_} = erlang:statistics(wall_clock),
diff --git a/lib/kernel/src/global.erl b/lib/kernel/src/global.erl
index 0a4edea452..6c36d417a2 100644
--- a/lib/kernel/src/global.erl
+++ b/lib/kernel/src/global.erl
@@ -881,11 +881,12 @@ handle_info({nodeup, Node}, S0) when S0#state.connect_all ->
false ->
resend_pre_connect(Node),
- %% now() is used as a tag to separate different synch sessions
+ %% erlang:unique_integer([monotonic]) is used as a tag to
+ %% separate different synch sessions
%% from each others. Global could be confused at bursty nodeups
%% because it couldn't separate the messages between the different
%% synch sessions started by a nodeup.
- MyTag = now(),
+ MyTag = erlang:unique_integer([monotonic]),
put({sync_tag_my, Node}, MyTag),
?trace({sending_nodeup_to_locker, {node,Node},{mytag,MyTag}}),
S1#state.the_locker ! {nodeup, Node, MyTag},
@@ -1772,8 +1773,8 @@ update_locker_known(Upd, S) ->
S#multi{known = Known, the_boss = TheBoss}.
random_element(L) ->
- {A,B,C} = now(),
- E = (A+B+C) rem length(L),
+ E = abs(erlang:monotonic_time()
+ bxor erlang:unique_integer()) rem length(L),
lists:nth(E+1, L).
exclude_known(Others, Known) ->
@@ -2072,9 +2073,10 @@ random_sleep(Times) ->
end,
case get(random_seed) of
undefined ->
- {A1, A2, A3} = now(),
- _ = random:seed(A1, A2, A3 + erlang:phash(node(), 100000)),
- ok;
+ _ = random:seed(erlang:phash2([erlang:node()]),
+ erlang:monotonic_time(),
+ erlang:unique_integer()),
+ ok;
_ -> ok
end,
%% First time 1/4 seconds, then doubling each time up to 8 seconds max.
@@ -2106,7 +2108,7 @@ trace_message(S, M, X) ->
S#state{trace = [trace_message(M, X) | S#state.trace]}.
trace_message(M, X) ->
- {node(), now(), M, nodes(), X}.
+ {node(), erlang:timestamp(), M, nodes(), X}.
%%-----------------------------------------------------------------
%% Each sync process corresponds to one call to sync. Each such
diff --git a/lib/kernel/src/inet_db.erl b/lib/kernel/src/inet_db.erl
index 2ebdc0f554..abe207295f 100644
--- a/lib/kernel/src/inet_db.erl
+++ b/lib/kernel/src/inet_db.erl
@@ -1372,8 +1372,7 @@ cache_rr(_Db, Cache, RR) ->
ets:insert(Cache, RR).
times() ->
- {Mega,Secs,_} = erlang:now(),
- Mega*1000000 + Secs.
+ erlang:monotonic_time(1).
%% lookup and remove old entries
diff --git a/lib/kernel/src/inet_res.erl b/lib/kernel/src/inet_res.erl
index 6037da1d22..410128a16a 100644
--- a/lib/kernel/src/inet_res.erl
+++ b/lib/kernel/src/inet_res.erl
@@ -715,10 +715,10 @@ udp_send(#sock{inet=I}, {A,B,C,D}=IP, Port, Buffer)
udp_recv(#sock{inet6=I}, {A,B,C,D,E,F,G,H}=IP, Port, Timeout, Decode)
when ?ip6(A,B,C,D,E,F,G,H), ?port(Port) ->
- do_udp_recv(I, IP, Port, Timeout, Decode, erlang:now(), Timeout);
+ do_udp_recv(I, IP, Port, Timeout, Decode, time_now(), Timeout);
udp_recv(#sock{inet=I}, {A,B,C,D}=IP, Port, Timeout, Decode)
when ?ip(A,B,C,D), ?port(Port) ->
- do_udp_recv(I, IP, Port, Timeout, Decode, erlang:now(), Timeout).
+ do_udp_recv(I, IP, Port, Timeout, Decode, time_now(), Timeout).
do_udp_recv(_I, _IP, _Port, 0, _Decode, _Start, _T) ->
timeout;
@@ -742,7 +742,7 @@ do_udp_recv(I, IP, Port, Timeout, Decode, Start, T) ->
NewTimeout = erlang:max(0, Timeout - 50),
do_udp_recv(I, IP, Port, NewTimeout, Decode, Start, T);
false ->
- Now = erlang:now(),
+ Now = time_now(),
NewT = erlang:max(0, Timeout - now_ms(Now, Start)),
do_udp_recv(I, IP, Port, Timeout, Decode, Start, NewT);
Result ->
@@ -1057,5 +1057,9 @@ dns_msg(Msg) ->
end.
-compile({inline, [now_ms/2]}).
-now_ms({Meg1,Sec1,Mic1}, {Meg0,Sec0,Mic0}) ->
- ((Meg1-Meg0)*1000000 + (Sec1-Sec0))*1000 + ((Mic1-Mic0) div 1000).
+now_ms(Int1, Int0) ->
+ Int1 - Int0.
+
+-compile({inline, [time_now/0]}).
+time_now() ->
+ erlang:monotonic_time(1000).
diff --git a/lib/kernel/src/kernel.app.src b/lib/kernel/src/kernel.app.src
index 9f6c0f4624..0cb10791d7 100644
--- a/lib/kernel/src/kernel.app.src
+++ b/lib/kernel/src/kernel.app.src
@@ -115,6 +115,6 @@
{applications, []},
{env, [{error_logger, tty}]},
{mod, {kernel, []}},
- {runtime_dependencies, ["erts-6.1.2", "stdlib-2.0", "sasl-2.4"]}
+ {runtime_dependencies, ["erts-7.0", "stdlib-2.0", "sasl-2.4"]}
]
}.
diff --git a/lib/kernel/src/os.erl b/lib/kernel/src/os.erl
index 7468a06f3c..3647545777 100644
--- a/lib/kernel/src/os.erl
+++ b/lib/kernel/src/os.erl
@@ -26,7 +26,8 @@
%%% BIFs
--export([getenv/0, getenv/1, getenv/2, getpid/0, putenv/2, timestamp/0, unsetenv/1]).
+-export([getenv/0, getenv/1, getenv/2, getpid/0, putenv/2, system_time/0, system_time/1,
+ timestamp/0, unsetenv/1]).
-spec getenv() -> [string()].
@@ -65,6 +66,17 @@ getpid() ->
putenv(_, _) ->
erlang:nif_error(undef).
+-spec system_time() -> integer().
+
+system_time() ->
+ erlang:nif_error(undef).
+
+-spec system_time(Unit) -> integer() when
+ Unit :: erlang:time_unit().
+
+system_time(_Unit) ->
+ erlang:nif_error(undef).
+
-spec timestamp() -> Timestamp when
Timestamp :: erlang:timestamp().
diff --git a/lib/kernel/src/pg2.erl b/lib/kernel/src/pg2.erl
index b562d4ffd2..70d7a75671 100644
--- a/lib/kernel/src/pg2.erl
+++ b/lib/kernel/src/pg2.erl
@@ -140,19 +140,22 @@ get_closest_pid(Name) ->
[Pid] ->
Pid;
[] ->
- {_,_,X} = erlang:now(),
case get_members(Name) of
[] -> {error, {no_process, Name}};
Members ->
- lists:nth((X rem length(Members))+1, Members)
+ random_element(Members)
end;
Members when is_list(Members) ->
- {_,_,X} = erlang:now(),
- lists:nth((X rem length(Members))+1, Members);
+ random_element(Members);
Else ->
Else
end.
+random_element(List) ->
+ X = abs(erlang:monotonic_time()
+ bxor erlang:unique_integer()),
+ lists:nth((X rem length(List)) + 1, List).
+
%%%
%%% Callback functions from gen_server
%%%
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-11 13:54:28 +0000