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<task id="GUID-8F8E3814-7ED6-4218-BEEF-741AE0E9366F" xml:lang="en"><title>Changing

the Priority</title><shortdesc>This section describes how an application (internal or third-party)

can change its priority by using OOM Monitor APIs.</shortdesc><prolog><metadata><keywords/></metadata></prolog><taskbody>

which is processing a task in the background can change its priority at runtime

to protect itself from being closed by the OOM Monitor. For example:</p><ul>

<li><p>Music Player playing music in the background</p></li>

<li><p>Download Manager downloading a file in the background</p></li>

</ul><p>If an application is processing a task for the user in the background,

the application is said to be <codeph>Busy</codeph> and the OOM Monitor must

not close a <codeph>Busy</codeph> application. An application can declare

itself to be <codeph>Busy</codeph> using <xref href="GUID-02D1911A-D2E5-3D28-9B05-75DA0A75DE73.dita#GUID-02D1911A-D2E5-3D28-9B05-75DA0A75DE73/GUID-420ECF8B-970A-381A-9035-DC1FCE8B566C"><apiname>ROomMonitorSession::SetOomPriority(EOomPriorityBusy)</apiname></xref> method.

When the application finishes its background job and becomes idle, it should

change its priority to <codeph>Normal</codeph>.</p></context>

session</cmd>

<info><codeblock xml:space="preserve">ROomMonitorSession ioomMonitorSession;

CleanUpClosePushL(ioomMonitorSession);

User::LeaveIfError(ioomMonitorSession.Connect());

</codeblock></info>

</step>

for the application to <codeph>Busy</codeph> before performing the background

task</cmd>

<info><codeblock xml:space="preserve">iOomMonitorSession.SetOomPriority(ROomMonitorSession::EOomPriorityBusy);

DoCriticalBackgroundProcessingL();

</codeblock></info>

</step>

<step id="GUID-33674FB1-56E4-46C6-B267-107A42FA3B57"><cmd>Set the priority

for the application to <codeph>Normal</codeph> after the task is completed.</cmd>

<info><codeblock xml:space="preserve">iOomMonitorSession.SetOomPriority(ROomMonitorSession::EOomPriorityNormal);

</codeblock></info>

</step>

<info><codeblock xml:space="preserve">iOomMonitorSession.Close();

</codeblock></info>

</step>

</steps>

</taskbody><related-links>

<link href="GUID-CE308C71-D8B2-43B3-97FD-B868285ED5FB.dita"><linktext>OOM Monitor

Priority</linktext></link>

<link href="GUID-39A8FBC9-5FD6-4F92-B71E-5C5438ECFD46.dita"><linktext>OOM Monitor

Overview</linktext></link>

<link href="GUID-88752800-83BD-4845-80A0-6B65D8D81924.dita"><linktext>OOM Monitor

Reference</linktext></link>

</related-links></task>