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<task id="GUID-AC9E8926-9BC8-5D46-91CA-139C89D04F32" xml:lang="en"><title>Enabling

Graceful Shutdown</title><shortdesc>Enabling graceful shutdown of a component is to determine whether

the System State Manager (SSM) has to undergo staged shutdown or existing

shutdown server mechanism must be used for device shutdown. </shortdesc><prolog><metadata><keywords/></metadata></prolog><taskbody>

<context><p>Shutdown is to stop a server interface. Shutdown server handles

the shutdown of a device. It provides a notification mechanism for applications

before the shutdown occurs so that the shutdown occurs gracefully. </p><p>Follow

the procedure given below to enable or disable the graceful shutdown in either

of the following ways by using patchable constant, <codeph>KSsmGracefulShutdown</codeph>:</p></context>

<steps id="GUID-FC23F168-F28C-5C18-8768-D1DF6CF453E7">

<step id="GUID-97CFA2CC-92D6-5CF8-B016-D2F5879F0573"><cmd/>

<info>To enable support on the Emulator: </info>

<substeps id="GUID-1395E506-B90A-580D-B9FB-234136BB7A32">

<substep id="GUID-B3E0E655-7B10-572F-A327-5F10101CD655"><cmd/>

<info>Add the following line to the <filepath>epoc.ini</filepath> file. </info>

<stepxmp><codeblock id="GUID-2AAE8C53-910B-5517-B818-35CF55B899F9" xml:space="preserve">patchdata_ssmcmn_dll_KSsmGracefulShutdown 0xFFFFFFFF</codeblock> </stepxmp>

<info>By default, the patchable constant <xref href="GUID-DCA333AA-942D-359F-90B4-901CC57833C3.dita"><apiname>KSsmGracefulShutdown</apiname></xref> is

set to <codeph>0</codeph>. This means that shutdown will not be graceful. </info>

</substep>

</substeps>

</step>

<step id="GUID-D307B7BE-9B94-59A7-8029-B188F426A19C"><cmd/>

<info>To enable support at ROM build time: </info>

<substeps id="GUID-B010F808-F2C1-5791-9AA0-6605A262BE58">

<substep id="GUID-2C6E92E2-7411-5F11-BCFE-48E2B8094C08"><cmd/>

<info>Configure the Base Shutdown server mechanism or the SSMA graceful shutdown

mechanism at ROM build time using a patchable constant <xref href="GUID-DCA333AA-942D-359F-90B4-901CC57833C3.dita"><apiname>KSsmGracefulShutdown</apiname></xref>. </info>

<info>The value of <xref href="GUID-DCA333AA-942D-359F-90B4-901CC57833C3.dita"><apiname>KSsmGracefulShutdown</apiname></xref> determines whether

the System State Manager (SSM) staged shutdown or Base Shutdown server mechanism

must be used for device shutdown. The default value for <xref href="GUID-DCA333AA-942D-359F-90B4-901CC57833C3.dita"><apiname>KSsmGracefulShutdown</apiname></xref> is <codeph>0x0</codeph>.

If the device shutdown is to be done through SSM staged shutdown, this value

must be set to <codeph>0xFFFFFFFF</codeph>. </info>

</substep>

<substep id="GUID-4A78026C-2EFF-5713-AE6D-677FCE8F69C5"><cmd/>

<info>To patch these values, add a line to an <filepath>iby</filepath> or <filepath>oby</filepath> file

that is included in the ROM being built using the following format: </info>

<stepxmp><codeblock id="GUID-B2ED2D65-683C-54C5-B12A-A8B59C250149" xml:space="preserve">patchdata &lt;dll&gt; @ &lt;symbol&gt; &lt;newvalue&gt;</codeblock></stepxmp>

<stepxmp><codeblock id="GUID-C89889BB-E1BD-5B60-A6F5-A2D050B74274" xml:space="preserve">patchdata ssmcmn.dll @ KSsmGracefulShutdown 0xFFFFFFFF</codeblock> </stepxmp>

</substep>

</substeps>

</step>

</steps>

<result><p>The component is shutdown gracefully in either of the following

ways by using patchable constant. </p> </result>

</taskbody><related-links>

<link href="GUID-4E5B1276-07D1-562A-8EE8-21DDE78D2CE5.dita"><linktext>System State

Management Policy</linktext></link>

<link href="GUID-9E0C9BB5-2AFC-54E4-B3A3-F3559E73FF03.dita"><linktext>Component

Shutdown Aware</linktext></link>