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authorChristopher Faulet <[email protected]>2011-09-14 17:49:38 +0200
committerHenrik Nord <[email protected]>2011-09-16 14:54:44 +0200
commit04731323678eff58f709b36f864d12aa08cfe6d9 (patch)
tree2c1646f7d690358e284296360d1da985a83228f8
parent42c581ddefd332fcadea696b5b2bedcdd575f14a (diff)
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Explain how dynamic child processes are stopped
-rw-r--r--lib/stdlib/doc/src/supervisor.xml4
-rw-r--r--system/doc/design_principles/sup_princ.xml4
2 files changed, 8 insertions, 0 deletions
diff --git a/lib/stdlib/doc/src/supervisor.xml b/lib/stdlib/doc/src/supervisor.xml
index b4e81aba1f..9cc9b69dd9 100644
--- a/lib/stdlib/doc/src/supervisor.xml
+++ b/lib/stdlib/doc/src/supervisor.xml
@@ -94,6 +94,10 @@
instead the child specification identifier is used,
<c>terminate_child/2</c> will return
<c>{error,simple_one_for_one}</c>.</p>
+ <p>Because a <c>simple_one_for_one</c> supervisor could have many
+ children, it shuts them all down at same time. So, order in which they
+ are stopped is not defined. For the same reason, it could have an
+ overhead with regards to the <c>Shutdown</c> strategy.</p>
</item>
</list>
<p>To prevent a supervisor from getting into an infinite loop of
diff --git a/system/doc/design_principles/sup_princ.xml b/system/doc/design_principles/sup_princ.xml
index 2748f21bbe..df0777559a 100644
--- a/system/doc/design_principles/sup_princ.xml
+++ b/system/doc/design_principles/sup_princ.xml
@@ -341,6 +341,10 @@ call:start_link(id1)</code>
supervisor:terminate_child(Sup, Pid)</code>
<p>where <c>Sup</c> is the pid, or name, of the supervisor and
<c>Pid</c> is the pid of the child.</p>
+ <p>Because a <c>simple_one_for_one</c> supervisor could have many children,
+ it shuts them all down at same time. So, order in which they are stopped is
+ not defined. For the same reason, it could have an overhead with regards to
+ the <c>Shutdown</c> strategy.</p>
</section>
<section>