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<concept id="GUID-E3F5ECD4-1531-53AA-A562-5C855C6AC0F2" xml:lang="en"><title>Patchable
Constants: KShtdwnTimeoutBase</title><prolog><metadata><keywords/></metadata></prolog><conbody>
<codeblock id="GUID-F46C908A-21F1-5BBD-B0E9-80B3341B4100" xml:space="preserve">EXPORT_C extern const TInt32 KShtdwnTimeoutBase = 1000000;</codeblock>
<table id="GUID-E71C35DC-D965-5B5E-805F-BF14E627F064">
<tgroup cols="2"><colspec colname="col0"/><colspec colname="col1"/>
<tbody>
<row>
<entry><p>Exported from: </p> </entry>
<entry><p> <filepath>shutdownsrv.dll</filepath>  </p> </entry>
</row>
<row>
<entry><p>Defined in: </p> </entry>
<entry><p> <filepath>                 .../os/devicesrv/resourcemgmt/powerandmemorynotificationservice/src/shutdownsrvpatchdata.cpp</filepath> </p> </entry>
</row>
<row>
<entry><p>Purpose: </p> </entry>
<entry><p>This constant represents the base timeout value in microseconds.
The shutdown server uses it and <codeph>KShtdwnTimeoutClient</codeph> to calculate
the shutdown timer. The timeout is calculated as </p> <codeblock id="GUID-292457F0-7737-5858-B7ED-110A688C8164" xml:space="preserve">KShtdwnTimeoutBase + KShtdwnTimeoutClient * numClients</codeblock> <p>where <codeph>numClients</codeph> is the number of connecting clients. </p> </entry>
</row>
</tbody>
</tgroup>
</table>
<p>If the timeout value is </p>
<ul>
<li id="GUID-BC380D3D-5752-5A9B-8D70-E3EF71530536"><p> <codeph>-1</codeph> the
timer is not used and the server will wait for all client registrations before
executing the shutdown, </p> </li>
<li id="GUID-0203BA82-3583-5161-849C-FB841BFBD041"><p> <codeph> 0</codeph> the
timer expires immediately and the server will execute the shutdown immediately
not waiting for any client re-registration, or </p> </li>
<li id="GUID-46425D37-F3A4-5ED2-A18A-8A0CD450D9D3"><p>greater than <codeph>0</codeph> the
server will wait a certain period of time for the client registrations and
execute the shutdown if the timer expires or all clients re-register. </p> </li>
</ul>
<p> <codeph>KShtdwnTimeoutBase</codeph> is an internal constant and should
not be directly modified. Device creators who wish to alter <codeph>KShtdwnTimeoutClient</codeph> and <codeph>KShtdwnTimeoutBase</codeph> should
define these ROM build-time macros in their product HRH or IBY files: </p>
<ul>
<li id="GUID-91D036C1-0B3F-5383-9CDE-13699A37113D"><p> <codeph>SYMBIAN_PWRCLI_PATCHDATA_KSHTDWNTIMEOUTBASE</codeph> with
value &gt;= -1, </p> </li>
<li id="GUID-FFA5DB88-B1D6-59B0-963C-9D1DE78108EC"><p> <codeph>SYMBIAN_PWRCLI_PATCHDATA_KSHTDWNTIMEOUTCLIENT</codeph> with
value &gt;= 0. </p> </li>
</ul>
<p>If values fall outside the specified ranges, the server panics with <codeph>KErrNotSupported</codeph>. </p>
</conbody></concept>