From e492b43c3e4366e865e5f1c34d0834df2a91d490 Mon Sep 17 00:00:00 2001
From: Eiichi Tsukata <devel@etsukata.com>
Date: Wed, 23 Apr 2014 21:46:21 +0900
Subject: Add erlang:system_info(tolerant_timeofday)

Add erlang:system_info(tolerant_timeofday), an API to check whether
compensation for sudden changes of system time is enabled or not.
---
 erts/doc/src/erl.xml    | 5 ++++-
 erts/doc/src/erlang.xml | 7 +++++++
 2 files changed, 11 insertions(+), 1 deletion(-)

(limited to 'erts/doc')

diff --git a/erts/doc/src/erl.xml b/erts/doc/src/erl.xml
index 9724a1345a..f8f4d14436 100644
--- a/erts/doc/src/erl.xml
+++ b/erts/doc/src/erl.xml
@@ -495,7 +495,7 @@
           <c><![CDATA[werl]]></c>, not <c><![CDATA[erl]]></c> (<c><![CDATA[oldshell]]></c>). Note also that
           <c><![CDATA[Ctrl-Break]]></c> is used instead of <c><![CDATA[Ctrl-C]]></c> on Windows.</p>
       </item>
-      <tag><c><![CDATA[+c]]></c></tag>
+      <tag><marker id="+c"><c><![CDATA[+c]]></c></marker></tag>
       <item>
         <p>Disable compensation for sudden changes of system time.</p>
         <p>Normally, <c><![CDATA[erlang:now/0]]></c> will not immediately reflect
@@ -510,6 +510,9 @@
           reflect the current system time. Note that timers are based
           on <c><![CDATA[erlang:now/0]]></c>. If the system time jumps, timers
           then time out at the wrong time.</p>
+        <p><em>NOTE</em>: You can check whether the adjustment is enabled or
+          disabled by calling
+	  <seealso marker="erlang#system_info_tolerant_timeofday">erlang:system_info(tolerant_timeofday)</seealso>.</p>
       </item>
       <tag><c><![CDATA[+d]]></c></tag>
       <item>
diff --git a/erts/doc/src/erlang.xml b/erts/doc/src/erlang.xml
index e7e9b218f2..49cd0a8a52 100644
--- a/erts/doc/src/erlang.xml
+++ b/erts/doc/src/erlang.xml
@@ -6293,6 +6293,13 @@ ok
               (<seealso marker="erts:erl_driver#driver_async">driver_async()</seealso>)
               as an integer.</p>
           </item>
+          <tag><marker id="system_info_tolerant_timeofday"><c>tolerant_timeofday</c></marker></tag>
+          <item>
+            <p>Returns whether compensation for sudden changes of system
+              time is <c>enabled</c> or <c>disabled</c>.</p>
+            <p>See also <seealso marker="erts:erl#+c">+c</seealso>
+              command line flag.</p>
+          </item>
           <tag><c>trace_control_word</c></tag>
           <item>
             <p>Returns the value of the node's trace control word.
-- 
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