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| <title>ATOMIC_VAR_INIT</title> |
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| <a xmlns="http://www.w3.org/1999/xhtml" id="ATOMIC_VAR_INIT"></a> |
| <h1>ATOMIC_VAR_INIT</h1> |
| <p> |
| Expands to a token sequence suitable for initializing an atomic object. |
| </p> |
| </div> |
| <div class="refsect1"> |
| <a id="description"></a> |
| <h2>Description</h2> |
| <p> |
| The <code class="function">ATOMIC_VAR_INIT</code> macro is defined as: |
| </p> |
| <p> |
| </p> |
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| <code class="code"> #define ATOMIC_VAR_INIT(C value)</code> |
| </td> |
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| <p> |
| </p> |
| <p> |
| The <code class="function">ATOMIC_VAR_INIT</code> macro expands to a token sequence suitable for initializing an atomic |
| object of a type that is initialization-compatible with value. An atomic object with automatic |
| storage duration that is not explicitly initialized using <code class="function">ATOMIC_VAR_INIT</code> is initially in an |
| indeterminate state; however, the default (zero) initialization for objects with static storage |
| duration is guaranteed to produce a valid state. |
| </p> |
| <p> |
| This macro can only be used to initialize atomic |
| objects that are declared in program scope in the global |
| address space. |
| </p> |
| <p> |
| Concurrent access to the variable being initialized, even via an atomic operation, constitutes a |
| data-race. |
| </p> |
| </div> |
| <div class="refsect2"> |
| <a id="example1"></a> |
| <h3> |
| Examples |
| </h3> |
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| global atomic_int guide = ATOMIC_VAR_INIT(42); |
| </td> |
| </tr> |
| </tbody> |
| </table> |
| </div> |
| <p> |
| Concurrent access to the variable being initialized, even via an atomic operation, constitutes a |
| data-race. |
| </p> |
| </div> |
| <div class="refsect1"> |
| <a id="specification"></a> |
| <h2>Specification</h2> |
| <p> |
| <img src="pdficon_small1.gif" /> |
| |
| <a href="https://www.khronos.org/registry/cl/specs/opencl-2.1-openclc.pdf#page=104" target="OpenCL Spec">OpenCL Specification</a> |
| </p> |
| </div> |
| <div class="refsect1"> |
| <a id="seealso"></a> |
| <h2>Also see</h2> |
| <p> |
| </p> |
| </div> |
| <div xmlns="" class="refsect3" lang="en" xml:lang="en"><a xmlns="http://www.w3.org/1999/xhtml" id="Copyright"></a><h4 xmlns="http://www.w3.org/1999/xhtml"></h4><img xmlns="http://www.w3.org/1999/xhtml" src="KhronosLogo.jpg" /><p xmlns="http://www.w3.org/1999/xhtml"></p>Copyright © 2007-2015 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 |
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