aboutsummaryrefslogtreecommitdiffstats
path: root/lib/inets/src/inets_app/inets_time_compat.erl
diff options
context:
space:
mode:
Diffstat (limited to 'lib/inets/src/inets_app/inets_time_compat.erl')
-rw-r--r--lib/inets/src/inets_app/inets_time_compat.erl72
1 files changed, 72 insertions, 0 deletions
diff --git a/lib/inets/src/inets_app/inets_time_compat.erl b/lib/inets/src/inets_app/inets_time_compat.erl
new file mode 100644
index 0000000000..475f0685dc
--- /dev/null
+++ b/lib/inets/src/inets_app/inets_time_compat.erl
@@ -0,0 +1,72 @@
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2015-2015. All Rights Reserved.
+%%
+%% Licensed under the Apache License, Version 2.0 (the "License");
+%% you may not use this file except in compliance with the License.
+%% You may obtain a copy of the License at
+%%
+%% http://www.apache.org/licenses/LICENSE-2.0
+%%
+%% Unless required by applicable law or agreed to in writing, software
+%% distributed under the License is distributed on an "AS IS" BASIS,
+%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+%% See the License for the specific language governing permissions and
+%% limitations under the License.
+%%
+%% %CopyrightEnd%
+%%
+
+%% This module is created to be able to execute on ERTS versions both
+%% earlier and later than 7.0.
+
+-module(inets_time_compat).
+
+%% We don't want warnings about the use of erlang:now/0 in
+%% this module.
+-compile(nowarn_deprecated_function).
+
+-export([monotonic_time/0,
+ timestamp/0,
+ unique_integer/0,
+ unique_integer/1]).
+
+monotonic_time() ->
+ try
+ erlang:monotonic_time()
+ catch
+ error:undef ->
+ %% Use Erlang system time as monotonic time
+ erlang_system_time_fallback()
+ end.
+
+timestamp() ->
+ try
+ erlang:timestamp()
+ catch
+ error:undef ->
+ erlang:now()
+ end.
+
+unique_integer() ->
+ try
+ erlang:unique_integer()
+ catch
+ error:undef ->
+ erlang_system_time_fallback()
+ end.
+
+unique_integer(Modifiers) ->
+ try
+ erlang:unique_integer(Modifiers)
+ catch
+ error:badarg ->
+ erlang:error(badarg, [Modifiers]);
+ error:undef ->
+ erlang_system_time_fallback()
+ end.
+
+erlang_system_time_fallback() ->
+ {MS, S, US} = erlang:now(),
+ (MS*1000000+S)*1000000+US.