1 <?xml version="1.0" encoding="utf-8"?>

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    10 <!DOCTYPE concept

    11   PUBLIC "-//OASIS//DTD DITA Concept//EN" "concept.dtd">

    12 <concept id="GUID-C08CE95C-E1D4-5C43-93FB-21B6E86F4565" xml:lang="en"><title>About

    13 the types of services</title><shortdesc>Describes the asynchronous services used by a client program.</shortdesc><prolog><metadata><keywords/></metadata></prolog><conbody>

    14 <p>There are a variety of asynchronous services that a client program can

    15 utilise. The main types are: </p>

    16 <ul>

    17 <li id="GUID-31716F0B-9C79-5DF9-B249-9A1D00E15705"><p>service provided by

    18 the kernel</p> </li>

    19 <li id="GUID-EA18A7D2-EB48-5476-83CF-5621FCFD1EF7"><p>service provided by

    20 a server thread, running in user mode</p> </li>

    21 <li id="GUID-AC3B80B6-981B-5DBB-9521-A6B169DCEB6B"><p>service provided by

    22 a device driver</p> </li>

    23 <li id="GUID-A0F6BAB0-DE36-5CA4-B607-B03EB9EC1740"><p>service provided in

    24 the same thread</p> </li>

    25 </ul>

    26 </conbody></concept>