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-rw-r--r--erts/doc/src/erlang.xml42
1 files changed, 33 insertions, 9 deletions
diff --git a/erts/doc/src/erlang.xml b/erts/doc/src/erlang.xml
index 8c01d77721..fbe7b36163 100644
--- a/erts/doc/src/erlang.xml
+++ b/erts/doc/src/erlang.xml
@@ -4,7 +4,7 @@
<erlref>
<header>
<copyright>
- <year>1996</year><year>2011</year>
+ <year>1996</year><year>2012</year>
<holder>Ericsson AB. All Rights Reserved.</holder>
</copyright>
<legalnotice>
@@ -215,9 +215,9 @@
representation of <c>Atom</c>. If <c>Encoding</c>
is <c>latin1</c>, there will be one byte for each character
in the text representation. If <c>Encoding</c> is <c>utf8</c> or
- <c>unicode</c>, the characters will encoded using UTF-8
+ <c>unicode</c>, the characters will be encoded using UTF-8
(meaning that characters from 16#80 up to 0xFF will be
- encode in two bytes).</p>
+ encoded in two bytes).</p>
<note><p>Currently, <c>atom_to_binary(Atom, latin1)</c> can
never fail because the text representation of an atom can only contain
@@ -268,7 +268,7 @@
<p>If <c>PosLen</c> in any way references outside the binary, a <c>badarg</c> exception is raised.</p>
- <p><c>Start</c> is zero-based, i.e:</p>
+ <p><c>Start</c> is zero-based, i.e.:</p>
<code>
1> Bin = &lt;&lt;1,2,3&gt;&gt;
2> binary_part(Bin,{0,2}).
@@ -773,9 +773,9 @@ false</pre>
turned off, nothing happens.</p>
<p>Once <c>demonitor(MonitorRef)</c> has returned it is
guaranteed that no <c>{'DOWN', MonitorRef, _, _, _}</c> message
- due to the monitor will be placed in the callers message queue
+ due to the monitor will be placed in the caller's message queue
in the future. A <c>{'DOWN', MonitorRef, _, _, _}</c> message
- might have been placed in the callers message queue prior to
+ might have been placed in the caller's message queue prior to
the call, though. Therefore, in most cases, it is advisable
to remove such a <c>'DOWN'</c> message from the message queue
after monitoring has been stopped.
@@ -818,7 +818,7 @@ false</pre>
<tag><c>flush</c></tag>
<item>
<p>Remove (one) <c>{_, MonitorRef, _, _, _}</c> message,
- if there is one, from the callers message queue after
+ if there is one, from the caller's message queue after
monitoring has been stopped.</p>
<p>Calling <c>demonitor(MonitorRef, [flush])</c>
is equivalent to the following, but more efficient:</p>
@@ -847,7 +847,7 @@ false</pre>
<item><p>The monitor was not found and could not be removed.
This probably because someone already has placed a
<c>'DOWN'</c> message corresponding to this monitor
- in the callers message queue.
+ in the caller's message queue.
</p>
</item>
</taglist>
@@ -4933,6 +4933,21 @@ true</pre>
threads in the Erlang run-time system and may therefore be greater
than the wall-clock time.</p>
</item>
+ <tag><marker id="statistics_scheduler_wall_time"><c>scheduler_wall_time</c></marker></tag>
+ <item>
+ <p>Returns
+ <c>[{Scheduler_Id, Scheduler_Worked_Time, Scheduler_Total_Time}]</c>, time lapses are since the
+ the system flag <seealso marker="#system_flag_scheduler_wall_time">scheduler_wall_time</seealso>
+ was set to true.
+ Returns <c>undefined</c> if the system flag <seealso marker="#system_flag_scheduler_wall_time">
+ scheduler_wall_time</seealso> is set to false.
+ </p>
+ <p>The list of scheduler information is unsorted and may come in different order
+ between calls. The time unit is undefined and may be changed and should only be used
+ to calculate relative utilization.
+ </p>
+ </item>
+
<tag><c>wall_clock</c></tag>
<item>
<p>Returns
@@ -5305,6 +5320,14 @@ true</pre>
flags.
</p>
</item>
+ <tag><marker id="system_flag_scheduler_wall_time"><c>erlang:system_flag(scheduler_wall_time, Boolean)</c></marker></tag>
+ <item>
+ <p>Turns on/off scheduler wall time measurements. </p>
+ <p>For more information see,
+ <seealso marker="#statistics_scheduler_wall_time">erlang:statistics(scheduler_wall_time)</seealso>.
+ </p>
+ </item>
+
<tag><marker id="system_flag_schedulers_online"><c>erlang:system_flag(schedulers_online, SchedulersOnline)</c></marker></tag>
<item>
<p>Sets the amount of schedulers online. Valid range is
@@ -5316,6 +5339,7 @@ true</pre>
<seealso marker="#system_info_schedulers_online">erlang:system_info(schedulers_online)</seealso>.
</p>
</item>
+
<tag><c>erlang:system_flag(trace_control_word, TCW)</c></tag>
<item>
<p>Sets the value of the node's trace control word to
@@ -7090,7 +7114,7 @@ true</pre>
<c>Id</c> has no effect on the caller in the future (unless
the link is setup again). If caller is trapping exits, an
<c>{'EXIT', Id, _}</c> message due to the link might have
- been placed in the callers message queue prior to the call,
+ been placed in the caller's message queue prior to the call,
though. Note, the <c>{'EXIT', Id, _}</c> message can be the
result of the link, but can also be the result of <c>Id</c>
calling <c>exit/2</c>. Therefore, it <em>may</em> be