sdk/2.1/docs/man/atomic_flag.xml

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<refentry>
    <refentryinfo>
        <keywordset>
            <keyword>atomic_flag</keyword>
        </keywordset>
    </refentryinfo>

    <refmeta>
        <refentrytitle>atomic_flag</refentrytitle>

        <refmiscinfo>
            <copyright>
                <year>2007-2013</year>
                <holder>The Khronos Group Inc.
 Permission is hereby granted, free of charge, to any person obtaining a
copy of this software and/or associated documentation files (the
"Materials"), to deal in the Materials without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Materials, and to
permit persons to whom the Materials are furnished to do so, subject to
the condition that this copyright notice and permission notice shall be included
in all copies or substantial portions of the Materials.</holder>
            </copyright>
        </refmiscinfo>
        <manvolnum>3</manvolnum>
    </refmeta>

<!-- ================================ SYNOPSIS -->

    <refnamediv id="atomic_flag">
        <refname>atomic_flag</refname>

        <refpurpose>
            The atomic_flag type provides the classic test-and-set functionality.
        </refpurpose>
    </refnamediv>

    <!-- ALTERNATIVE SYNTAX SYNOPSIS (NON-FUNCTION) -->

    <refsect2 id="synopsis">
        <title>
        </title>

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                        <entry>
atomic_flag
                        </entry>
                    </row>
                </tbody>
            </tgroup>
        </informaltable>
    </refsect2>

<!-- ================================ DESCRIPTION  -->

    <refsect1 id="description"><title>Description</title>
        <para>
            The <function>atomic_flag</function> type provides the 
            classic test-and-set functionality. It has two states, set 
            (value is non-zero) and clear (value is 0). Operations 
            on an object of type <function>atomic_flag</function> shall 
            be lock free.
        </para>

        <para>
            The macro <constant>ATOMIC_FLAG_INIT</constant> may be 
            used to initialize an <function>atomic_flag</function> to the clear 
            state. An <function>atomic_flag</function> that is not 
            explicitly initialized with <constant>ATOMIC_FLAG_INIT</constant> is 
            initially in an indeterminate state.
        </para>

        <para>
            This macro can only be used for atomic objects that are 
            declared in program scope in the global 
            address space with the <function>atomic_flag</function> type.
        </para>

    </refsect1>

<!-- ================================ NOTES 

    <refsect1 id="notes"><title>Notes</title>
        <para>
        </para>

    </refsect1>
-->

<!-- ================================ EXAMPLE  -->

    <refsect2 id="example1">
        <title>
            Example
        </title>

        <para>
        </para>

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                        <entry>
global atomic_flag guard = ATOMIC_FLAG_INIT;
                        </entry>
                    </row>
                </tbody>
            </tgroup>
        </informaltable>
    </refsect2>


<!-- ================================ SPECIFICATION  -->
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            <olink uri="atomic_flag">OpenCL Specification</olink>
        </para>
    </refsect1>

<!-- ================================ ALSO SEE  -->
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    <refsect1 id="seealso"><title>Also see</title>
        <para>
            <citerefentry href="atomicFunctions"><refentrytitle>Atomic Functions</refentrytitle></citerefentry>
        </para>
    </refsect1>


<!-- ============================== COPYRIGHT -->
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<!-- 16-Dec-2013, rev. 19 -->
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