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authorErlang/OTP <[email protected]>2015-08-13 12:34:03 +0200
committerErlang/OTP <[email protected]>2015-08-13 12:34:03 +0200
commit2c7132e3f6dc670a177aac804fe12702dbc9ed7d (patch)
treef684c2a7881b2fb3eb44312df3770432de01b86d /lib/diameter/src/base/diameter_lib.erl
parent0c21fb612b736f53dcc04face42bd106c50287ae (diff)
parent96d63dca845e18f86488db9d8dfb33eb76ad0467 (diff)
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Merge branch 'anders/diameter/17/time/OTP-12926' into maint-17
* anders/diameter/17/time/OTP-12926: Simplify time manipulation Remove use of monotonic time in pre-18 code Remove unnecessary redefinition of erlang:max/2
Diffstat (limited to 'lib/diameter/src/base/diameter_lib.erl')
-rw-r--r--lib/diameter/src/base/diameter_lib.erl101
1 files changed, 3 insertions, 98 deletions
diff --git a/lib/diameter/src/base/diameter_lib.erl b/lib/diameter/src/base/diameter_lib.erl
index b9b3e21788..26cc6137a2 100644
--- a/lib/diameter/src/base/diameter_lib.erl
+++ b/lib/diameter/src/base/diameter_lib.erl
@@ -18,18 +18,12 @@
%%
-module(diameter_lib).
--compile({no_auto_import, [now/0]}).
-export([info_report/2,
error_report/2,
warning_report/2,
- now/0,
- timestamp/1,
now_diff/1,
- micro_diff/1,
- micro_diff/2,
time/1,
- seed/0,
eval/1,
eval_name/1,
get_stacktrace/0,
@@ -98,49 +92,10 @@ fmt(T) ->
end.
%% ---------------------------------------------------------------------------
-%% # now/0
-%% ---------------------------------------------------------------------------
-
--type timestamp() :: {non_neg_integer(), 0..999999, 0..999999}.
--type now() :: integer() %% monotonic time
- | timestamp().
-
--spec now()
- -> now().
-
-%% Use monotonic time if it exists, fall back to erlang:now()
-%% otherwise.
-
-now() ->
- try
- erlang:monotonic_time()
- catch
- error: undef -> erlang:now()
- end.
-
-%% ---------------------------------------------------------------------------
-%% # timestamp/1
-%% ---------------------------------------------------------------------------
-
--spec timestamp(NowT :: now())
- -> timestamp().
-
-timestamp({_,_,_} = T) -> %% erlang:now()
- T;
-
-timestamp(MonoT) -> %% monotonic time
- MicroSecs = monotonic_to_microseconds(MonoT + erlang:time_offset()),
- Secs = MicroSecs div 1000000,
- {Secs div 1000000, Secs rem 1000000, MicroSecs rem 1000000}.
-
-monotonic_to_microseconds(MonoT) ->
- erlang:convert_time_unit(MonoT, native, micro_seconds).
-
-%% ---------------------------------------------------------------------------
%% # now_diff/1
%% ---------------------------------------------------------------------------
--spec now_diff(NowT :: now())
+-spec now_diff(NowT :: erlang:timestamp())
-> {Hours, Mins, Secs, MicroSecs}
when Hours :: non_neg_integer(),
Mins :: 0..59,
@@ -151,36 +106,7 @@ monotonic_to_microseconds(MonoT) ->
%% instead of as integer microseconds.
now_diff(Time) ->
- time(micro_diff(Time)).
-
-%% ---------------------------------------------------------------------------
-%% # micro_diff/1
-%% ---------------------------------------------------------------------------
-
--spec micro_diff(NowT :: now())
- -> MicroSecs
- when MicroSecs :: non_neg_integer().
-
-micro_diff({_,_,_} = T0) ->
- timer:now_diff(erlang:now(), T0);
-
-micro_diff(T0) -> %% monotonic time
- monotonic_to_microseconds(erlang:monotonic_time() - T0).
-
-%% ---------------------------------------------------------------------------
-%% # micro_diff/2
-%% ---------------------------------------------------------------------------
-
--spec micro_diff(T1 :: now(), T0 :: now())
- -> MicroSecs
- when MicroSecs :: non_neg_integer().
-
-micro_diff(T1, T0)
- when is_integer(T1), is_integer(T0) -> %% monotonic time
- monotonic_to_microseconds(T1 - T0);
-
-micro_diff(T1, T0) -> %% at least one erlang:now()
- timer:now_diff(timestamp(T1), timestamp(T0)).
+ time(timer:now_diff(now(), Time)).
%% ---------------------------------------------------------------------------
%% # time/1
@@ -190,7 +116,7 @@ micro_diff(T1, T0) -> %% at least one erlang:now()
-spec time(NowT | Diff)
-> {Hours, Mins, Secs, MicroSecs}
- when NowT :: timestamp(),
+ when NowT :: erlang:timestamp(),
Diff :: non_neg_integer(),
Hours :: non_neg_integer(),
Mins :: 0..59,
@@ -209,27 +135,6 @@ time(Micro) -> %% elapsed time
{H, M, S, Micro rem 1000000}.
%% ---------------------------------------------------------------------------
-%% # seed/0
-%% ---------------------------------------------------------------------------
-
--spec seed()
- -> {timestamp(), {integer(), integer(), integer()}}.
-
-%% Return an argument for random:seed/1.
-
-seed() ->
- T = now(),
- {timestamp(T), seed(T)}.
-
-%% seed/1
-
-seed({_,_,_} = T) ->
- T;
-
-seed(T) -> %% monotonic time
- {erlang:phash2(node()), T, erlang:unique_integer()}.
-
-%% ---------------------------------------------------------------------------
%% # eval/1
%%
%% Evaluate a function in various forms.