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Default to a single receive thread on Windows

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This works around a termination issue on Windows caused by the process
sometimes being unable to send a packet to itself to wake up a thread
stuck in a blocking read on a socket.

Signed-off-by: Erik Boasson <eb@ilities.com>
This commit is contained in:
Erik Boasson 2020-01-22 10:41:02 +01:00 • committed by eboasson
parent 263d8016b8
commit bb76798492
7 changed files with 75 additions and 34 deletions
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22
etc/cyclonedds.xsd
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@ -1013,14 +1013,24 @@ is: &amp;quot;-1&amp;quot;.&lt;/p&gt;</xs:documentation>
<xs:annotation>
<xs:documentation>
&lt;p&gt;This element controls whether all traffic is handled by a single
receive thread or whether multiple receive threads may be used to improve
latency. Currently multiple receive threads are only used for
connectionless transport (e.g., UDP) and ManySocketsMode not set to
single (the default).&lt;/p&gt;&lt;p&gt;The default value is: &amp;quot;true&amp;quot;.&lt;/p&gt;</xs:documentation>
receive thread (false) or whether multiple receive threads may be used to
improve latency (true). By default it is disabled on Windows because it
appears that one cannot count on being able to send packets to oneself,
which is necessary to stop the thread during shutdown. Currently multiple
receive threads are only used for connectionless transport (e.g., UDP)
and ManySocketsMode not set to single (the default).&lt;/p&gt;&lt;p&gt;The default
value is: &amp;quot;default&amp;quot;.&lt;/p&gt;</xs:documentation>
</xs:annotation>
<xs:complexType>
<xs:simpleContent>
<xs:extension base="xs:boolean">
<xs:restriction base="xs:anyType">
<xs:simpleType>
<xs:restriction base="xs:token">
<xs:enumeration value="false"/>
<xs:enumeration value="true"/>
<xs:enumeration value="default"/>
</xs:restriction>
</xs:simpleType>
<xs:attribute name="maxretries" type="xs:integer">
<xs:annotation>
<xs:documentation>
@ -1032,7 +1042,7 @@ attribute before aborting.&lt;/p&gt;&lt;p&gt;The default value is:
&amp;quot;4294967295&amp;quot;.&lt;/p&gt;</xs:documentation>
</xs:annotation>
</xs:attribute>
</xs:extension>
</xs:restriction>
</xs:simpleContent>
</xs:complexType>
</xs:element>