| <?xml version="1.0" encoding="UTF-8"?> |
| <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "xhtml1-transitional.dtd"> |
| <!-- saved from url=(0013)about:internet --> |
| <?xml-stylesheet type="text/xsl" href="mathml.xsl"?><html xmlns="http://www.w3.org/1999/xhtml" xmlns:pref="http://www.w3.org/2002/Math/preference" xmlns:xlink="http://www.w3.org/1999/xlink" pref:renderer="mathplayer-dl"> |
| <head> |
| <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> |
| <style xmlns="" type="text/css"> |
| /* This style sets a margin around the entire page */ |
| html, body { |
| margin: 10px; |
| } |
| |
| p { |
| font: normal 16px verdana, sans-serif; |
| margin: 0; |
| padding-bottom:12px; |
| } |
| |
| h1 { |
| font: bold 25px verdana, sans-serif; |
| margin-top: 0; |
| margin-bottom: 3px; |
| padding-top: 0; |
| padding-bottom: 0; |
| } |
| |
| h2 { |
| font: bold 19px verdana, sans-serif; |
| margin-top: 28px; |
| margin-bottom: 3px; |
| padding-top: 0; |
| padding-bottom: 0; |
| } |
| |
| h3 { |
| font: bold 19px verdana, sans-serif !important; |
| margin-top: 28px; |
| margin-bottom: 3px; |
| padding-top: 0; |
| padding-bottom: 0; |
| } |
| |
| li { |
| font: normal 16px verdana, sans-serif; |
| margin-top: 0; |
| margin-bottom: 18px; |
| padding-top: 0; |
| padding-bottom: 0; |
| } |
| |
| .pdparam { |
| font: italic 16px verdana, sans-serif; |
| } |
| |
| .term { |
| font: italic 16px verdana, sans-serif; |
| font-weight: normal; |
| } |
| |
| .type { |
| font: normal 16px verdana, sans-serif !important; |
| } |
| |
| .parameter { |
| font-style: italic; |
| } |
| |
| a:link, a:visited { |
| color: blue; |
| text-decoration: none; |
| font: normal 16px; |
| } |
| |
| a:hover { |
| background-color: #FFFF99; |
| font: normal 16px; |
| } |
| |
| div.funcsynopsis { |
| text-align: left; |
| background-color: #e6e6e6; |
| font: normal 16px verdana, sans-serif; |
| padding-top: 10px; |
| padding-bottom: 10px; |
| } |
| |
| div.funcsynopsis table { |
| border-collapse: separate; |
| font: normal 16px verdana, sans-serif; |
| } |
| |
| div.funcsynopsis td { |
| background-color: #e6e6e6; |
| border: 0 solid #000; |
| padding: 1px; |
| font: normal 16px verdana, sans-serif; |
| } |
| |
| div.refsect1 { |
| font-family: verdana, sans-serif; |
| font-size: 16px; |
| } |
| |
| code.constant { |
| font: normal 16px courier new, monospace !important; |
| } |
| |
| span.errorname { |
| font: normal 16px verdana, sans-serif !important; |
| } |
| |
| code.function { |
| font: bold 16px verdana, sans-serif !important; |
| } |
| |
| b.fsfunc { |
| font: bold 16px verdana, sans-serif !important; |
| } |
| |
| code.varname { |
| font: italic 16px verdana, sans-serif; |
| } |
| |
| code.replaceable { |
| font: italic 16px courier new, monospace; |
| } |
| |
| code.funcdef { |
| font: normal 16px verdana, sans-serif !important; |
| } |
| |
| .citerefentry { |
| font: normal 16px verdana, sans-serif !important; |
| } |
| |
| .parameter { |
| font-style: italic; |
| } |
| |
| code.fsfunc { |
| font: normal 16px verdana, sans-serif !important; |
| } |
| |
| /* PARAMETER: This style controls spacing between the terms in Parameter section */ |
| dt { |
| margin-top: 15px; |
| } |
| |
| /* TABLES: These styles apply to all tables OTHER than the Synopsis and Example tables */ |
| div.refsect1 table { |
| width: 100%; |
| margin-top: 10px; |
| background-color: #FFF; |
| border-collapse: collapse; |
| border-color: #000; |
| border-width: 1px; |
| font: normal 16px verdana, sans-serif; |
| } |
| |
| div.refsect1 th { |
| border-collapse: collapse; |
| border-color: #000; |
| border-width: 1px; |
| font: bold 16px verdana, sans-serif; |
| } |
| |
| div.refsect1 td { |
| background-color: #FFF; |
| padding: 5px; |
| vertical-align: text-top; |
| border-collapse: collapse; |
| border-color: #000; |
| border-width: 1px; |
| font: normal 16px verdana, sans-serif; |
| } |
| |
| div.refsect1 p{ |
| font: normal 16px verdana, sans-serif; |
| margin-top: 8px; |
| margin-bottom: 8px; |
| padding-top: 0; |
| padding-bottom: 0; |
| } |
| |
| |
| /* EXAMPLE: These styles apply only to the Example section */ |
| div.refsect2 { |
| font: normal 16px courier new, monospace !important; |
| } |
| |
| div.refsect2 table { |
| margin-top: 0; |
| background-color: #e6e6e6; |
| width: 100%; |
| border: 0 solid #000; |
| padding: 2px; |
| font: normal 16px courier new, monospace !important; |
| } |
| |
| div.refsect2 td { |
| background-color: #e6e6e6; |
| font: normal 16px courier new, monospace !important; |
| white-space:pre; |
| } |
| |
| /* COPYRIGHT: This style formats the text of the copyright statement at the bottom of the page */ |
| div.refsect3 { |
| font: normal 11px verdana, sans-serif; |
| margin-top: 50px; |
| margin-bottom: 20px; |
| padding-top: 0; |
| padding-bottom: 0; |
| } |
| |
| </style> |
| <title>Atomic Functions</title> |
| <meta name="generator" content="DocBook XSL Stylesheets V1.78.1" /> |
| <meta name="keywords" content="Atomic Functions" /> |
| </head> |
| <body> |
| <div class="refentry"> |
| <a id="id-1"></a> |
| <div class="titlepage"></div> |
| <div xmlns="" class="refnamediv"> |
| <h1>Atomic Functions</h1> |
| <p> |
| The atomic functions are shown below. |
| Click an item in the table below for details about that function. |
| </p> |
| </div> |
| <div class="refsect1"> |
| <a id="springboard"></a> |
| <h2></h2> |
| <div class="informaltable"> |
| <table border="1"> |
| <colgroup> |
| <col align="left" class="col1" /> |
| <col align="left" class="col2" /> |
| </colgroup> |
| <tbody> |
| <tr> |
| <td align="left"> |
| <a class="citerefentry" href="atomic_init.html"><span class="citerefentry"><span class="refentrytitle">atomic_init</span></span></a> |
| </td> |
| <td align="left"> |
| <a class="citerefentry" href="atomic_work_item_fence.html"><span class="citerefentry"><span class="refentrytitle">atomic_work_item_fence</span></span></a> |
| </td> |
| </tr> |
| <tr> |
| <td align="left"> |
| <a class="citerefentry" href="atomic_store.html"><span class="citerefentry"><span class="refentrytitle">atomic_store</span></span></a> |
| </td> |
| <td align="left"> |
| <a class="citerefentry" href="atomic_store.html"><span class="citerefentry"><span class="refentrytitle">atomic_store_explicit</span></span></a> |
| </td> |
| </tr> |
| <tr> |
| <td align="left"> |
| <a class="citerefentry" href="atomic_exchange.html"><span class="citerefentry"><span class="refentrytitle">atomic_exchange</span></span></a> |
| </td> |
| <td align="left"> |
| <a class="citerefentry" href="atomic_exchange.html"><span class="citerefentry"><span class="refentrytitle">atomic_exchange_explicit</span></span></a> |
| </td> |
| </tr> |
| <tr> |
| <td align="left"> |
| <a class="citerefentry" href="atomic_compare_exchange.html"><span class="citerefentry"><span class="refentrytitle">atomic_compare_exchange_strong</span></span></a> |
| </td> |
| <td align="left"> |
| <a class="citerefentry" href="atomic_compare_exchange.html"><span class="citerefentry"><span class="refentrytitle">atomic_compare_exchange_strong_explicit</span></span></a> |
| </td> |
| </tr> |
| <tr> |
| <td align="left"> |
| <a class="citerefentry" href="atomic_compare_exchange.html"><span class="citerefentry"><span class="refentrytitle">atomic_compare_exchange_weak</span></span></a> |
| </td> |
| <td align="left"> |
| <a class="citerefentry" href="atomic_compare_exchange.html"><span class="citerefentry"><span class="refentrytitle">atomic_compare_exchange_weak_explicit</span></span></a> |
| </td> |
| </tr> |
| <tr> |
| <td align="left"> |
| <a class="citerefentry" href="atomic_fetch_key.html"><span class="citerefentry"><span class="refentrytitle">atomic_fetch_key</span></span></a> |
| </td> |
| <td align="left"> |
| <a class="citerefentry" href="atomic_fetch_key.html"><span class="citerefentry"><span class="refentrytitle">atomic_fetch_key_explicit</span></span></a> |
| </td> |
| </tr> |
| <tr> |
| <td align="left"> |
| <a class="citerefentry" href="atomic_flag_test_and_set.html"><span class="citerefentry"><span class="refentrytitle">atomic_flag_test_and_set</span></span></a> |
| </td> |
| <td align="left"> |
| <a class="citerefentry" href="atomic_flag_test_and_set.html"><span class="citerefentry"><span class="refentrytitle">atomic_flag_test_and_set_explicit</span></span></a> |
| </td> |
| </tr> |
| <tr> |
| <td align="left"> |
| <a class="citerefentry" href="atomic_flag_clear.html"><span class="citerefentry"><span class="refentrytitle">atomic_flag_clear</span></span></a> |
| </td> |
| <td align="left"> |
| <a class="citerefentry" href="atomic_flag_clear.html"><span class="citerefentry"><span class="refentrytitle">atomic_flag_clear_explicit</span></span></a> |
| </td> |
| </tr> |
| </tbody> |
| </table> |
| </div> |
| <h4><a id="id-1.4.3"></a>64-bit Atomics</h4> |
| <p> |
| The optional extension |
| <a class="citerefentry" href="cl_khr_int64_base_atomics.html"><span class="citerefentry"><span class="refentrytitle">cl_khr_int64_base_atomics</span></span></a> |
| implements atomic operations on 64-bit signed |
| and unsigned integers to locations in <code class="code">__global</code> |
| and <code class="code">__local</code> memory. |
| </p> |
| <div class="informaltable"> |
| <table border="1"> |
| <colgroup> |
| <col align="left" class="col1" /> |
| <col align="left" class="col2" /> |
| </colgroup> |
| <tbody></tbody> |
| </table> |
| </div> |
| <p> |
| The <a class="citerefentry" href="cl_khr_int64_extended_atomics.html"><span class="citerefentry"><span class="refentrytitle">cl_khr_int64_extended_atomics</span></span></a> |
| extension enables additional atomic functions using types <span class="type">long</span> |
| and <span class="type">unsigned long</span>. An application that wants to use |
| this extension will need to include the <code class="code">#pragma OPENCL EXTENSION |
| <a class="citerefentry" href="cl_khr_int64_extended_atomics.html"><span class="citerefentry"><span class="refentrytitle">cl_khr_int64_extended_atomics</span></span></a> |
| : enable</code> in the OpenCL program source. |
| </p> |
| <div class="informaltable"> |
| <table border="1"> |
| <colgroup> |
| <col align="left" class="col1" /> |
| <col align="left" class="col2" /> |
| <col align="left" class="col3" /> |
| </colgroup> |
| <tbody></tbody> |
| </table> |
| </div> |
| </div> |
| <div class="refsect1"> |
| <a id="description"></a> |
| <h2>Description</h2> |
| <p> |
| As of OpenCL version 1.1, |
| <code class="code">cl_khr_global_int32_base_atomics</code>, |
| <code class="code">cl_khr_global_int32_extended_atomics</code>, |
| <code class="code">cl_khr_local_int32_base_atomics</code> and |
| <code class="code">cl_khr_local_int32_extended_atomics</code> |
| extensions are core features. The built-in atomic function names are changed to use the |
| <code class="code">atomic_ prefix</code> instead of <code class="code">atom_</code>. |
| </p> |
| <p> |
| The list of supported atomic type names are: |
| </p> |
| <div class="itemizedlist"> |
| <ul class="itemizedlist" style="list-style-type: disc; "> |
| <li class="listitem"> |
| <span class="type">atomic_int</span> |
| </li> |
| <li class="listitem"> |
| <span class="type">atomic_uint</span> |
| </li> |
| <li class="listitem"> |
| <span class="type">atomic_long</span> |
| </li> |
| <li class="listitem"> |
| <span class="type">atomic_ulong</span> |
| </li> |
| <li class="listitem"> |
| <span class="type">atomic_float</span> |
| </li> |
| <li class="listitem"> |
| <span class="type">atomic_double</span> |
| </li> |
| <li class="listitem"> |
| <span class="type">atomic_intptr_t</span> |
| </li> |
| <li class="listitem"> |
| <span class="type">atomic_uintptr_t</span> |
| </li> |
| <li class="listitem"> |
| <span class="type">atomic_size_t</span> |
| </li> |
| <li class="listitem"> |
| <span class="type">atomic_ptrdiff_t</span> |
| </li> |
| </ul> |
| </div> |
| <p> |
| The <span class="type">atomic_long</span> and <span class="type">atomic_ulong</span> types are supported if the |
| <a class="citerefentry" href="cl_khr_int64_base_atomics.html"><span class="citerefentry"><span class="refentrytitle">cl_khr_int64_base_atomics</span></span></a> and |
| <a class="citerefentry" href="cl_khr_int64_extended_atomics.html"><span class="citerefentry"><span class="refentrytitle">cl_khr_int64_extended_atomics</span></span></a> |
| extensions are supported. |
| </p> |
| <p> |
| The <span class="type">atomic_double</span> type is only supported if double precision is supported and the |
| <a class="citerefentry" href="cl_khr_int64_base_atomics.html"><span class="citerefentry"><span class="refentrytitle">cl_khr_int64_base_atomics</span></span></a> and |
| <a class="citerefentry" href="cl_khr_int64_extended_atomics.html"><span class="citerefentry"><span class="refentrytitle">cl_khr_int64_extended_atomics</span></span></a> |
| extensions are supported. |
| </p> |
| <p> |
| If the device address space is 64-bits, the data types |
| <span class="type">atomic_intptr_t</span>, <span class="type">atomic_uintptr_t</span>, |
| <span class="type">atomic_size_t</span> and <span class="type">atomic_ptrdiff_t</span> are supported if the |
| <a class="citerefentry" href="cl_khr_int64_base_atomics.html"><span class="citerefentry"><span class="refentrytitle">cl_khr_int64_base_atomics</span></span></a> and |
| <a class="citerefentry" href="cl_khr_int64_extended_atomics.html"><span class="citerefentry"><span class="refentrytitle">cl_khr_int64_extended_atomics</span></span></a> |
| extensions are supported. |
| </p> |
| <p> |
| Arguments to a kernel can be declared to be a pointer to the above atomic types or the |
| <span class="type">atomic_flag</span> type. |
| </p> |
| <p> |
| The representation of atomic integer, floating-point |
| and pointer types have the same size as their |
| corresponding regular types. The <span class="type">atomic_flag</span> |
| type must be implemented as a 32-bit integer. |
| </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=103" target="OpenCL Spec">OpenCL Specification</a> |
| </p> |
| </div> |
| <div class="refsect1"> |
| <a id="seealso"></a> |
| <h2>Also see</h2> |
| <p> |
| <a class="citerefentry" href="memory_order.html"><span class="citerefentry"><span class="refentrytitle">memory_order</span></span></a>, |
| <a class="citerefentry" href="memory_scope.html"><span class="citerefentry"><span class="refentrytitle">memory_scope</span></span></a>, |
| <a class="citerefentry" href="atomic_flag.html"><span class="citerefentry"><span class="refentrytitle">atomic_flag type</span></span></a> |
| </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 |
| 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. |
| </div> |
| </div> |
| </body> |
| </html> |
