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-rw-r--r--lib/kernel/doc/src/heart.xml63
1 files changed, 63 insertions, 0 deletions
diff --git a/lib/kernel/doc/src/heart.xml b/lib/kernel/doc/src/heart.xml
index b9fad17ce1..9da4773f2d 100644
--- a/lib/kernel/doc/src/heart.xml
+++ b/lib/kernel/doc/src/heart.xml
@@ -118,6 +118,13 @@
<p>In the following descriptions, all function fails with reason
<c>badarg</c> if <c>heart</c> is not started.</p>
</description>
+
+ <datatypes>
+ <datatype>
+ <name name="heart_option"/>
+ </datatype>
+ </datatypes>
+
<funcs>
<func>
<name name="set_cmd" arity="1"/>
@@ -154,6 +161,62 @@
the empty string will be returned.</p>
</desc>
</func>
+
+ <func>
+ <name name="set_callback" arity="2"/>
+ <fsummary>Set a validation callback</fsummary>
+ <desc>
+ <p> This validation callback will be executed before any heartbeat sent
+ to the port program. For the validation to succeed it needs to return
+ with the value <c>ok</c>.
+ </p>
+ <p> An exception within the callback will be treated as a validation failure. </p>
+ <p> The callback will be removed if the system reboots. </p>
+ </desc>
+ </func>
+ <func>
+ <name name="clear_callback" arity="0"/>
+ <fsummary>Clear the validation callback</fsummary>
+ <desc>
+ <p>Removes the validation callback call before heartbeats.</p>
+ </desc>
+ </func>
+ <func>
+ <name name="get_callback" arity="0"/>
+ <fsummary>Get the validation callback</fsummary>
+ <desc>
+ <p>Get the validation callback. If the callback is cleared, <c>none</c> will be returned.</p>
+ </desc>
+ </func>
+
+ <func>
+ <name name="set_options" arity="1"/>
+ <fsummary>Set a list of options</fsummary>
+ <desc>
+ <p> Valid options <c>set_options</c> are: </p>
+ <taglist>
+ <tag><c>check_schedulers</c></tag>
+ <item>
+ <p>If enabled, a signal will be sent to each scheduler to check its
+ responsiveness. The system check occurs before any heartbeat sent
+ to the port program. If any scheduler is not responsive enough the
+ heart program will not receive its heartbeat and thus eventually terminate the node.
+ </p>
+ </item>
+ </taglist>
+ <p> Returns with the value <c>ok</c> if the options are valid.</p>
+ </desc>
+ </func>
+ <func>
+ <name name="get_options" arity="0"/>
+ <fsummary>Get the temporary reboot command</fsummary>
+ <desc>
+ <p>Returns <c>{ok, Options}</c> where <c>Options</c> is a list of current options enabled for heart.
+ If the callback is cleared, <c>none</c> will be returned.</p>
+ </desc>
+ </func>
+
+
</funcs>
</erlref>