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<a name="boost.compute.program_cache"></a><div class="titlepage"></div>
<span class="keyword">class</span> <a class="link" href="program_cache.html" title="Class program_cache">program_cache</a> <span class="special">:</span> <span class="keyword">private</span> <span class="identifier">noncopyable</span> <span class="special">{</span>
<span class="keyword">public</span><span class="special">:</span>
<span class="comment">// <a class="link" href="program_cache.html#boost.compute.program_cacheconstruct-copy-destruct">construct/copy/destruct</a></span>
- <a class="link" href="program_cache.html#idm46676579553552-bb"><span class="identifier">program_cache</span></a><span class="special">(</span><span class="identifier">size_t</span><span class="special">)</span><span class="special">;</span>
- <a class="link" href="program_cache.html#idm46676579551664-bb"><span class="special">~</span><span class="identifier">program_cache</span></a><span class="special">(</span><span class="special">)</span><span class="special">;</span>
+ <a class="link" href="program_cache.html#idm46009691517488-bb"><span class="identifier">program_cache</span></a><span class="special">(</span><span class="identifier">size_t</span><span class="special">)</span><span class="special">;</span>
+ <a class="link" href="program_cache.html#idm46009691515600-bb"><span class="special">~</span><span class="identifier">program_cache</span></a><span class="special">(</span><span class="special">)</span><span class="special">;</span>
- <span class="comment">// <a class="link" href="program_cache.html#idm46676579580752-bb">public member functions</a></span>
- <span class="identifier">size_t</span> <a class="link" href="program_cache.html#idm46676579580192-bb"><span class="identifier">size</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
- <span class="identifier">size_t</span> <a class="link" href="program_cache.html#idm46676579578736-bb"><span class="identifier">capacity</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
- <span class="keyword">void</span> <a class="link" href="program_cache.html#idm46676579577296-bb"><span class="identifier">clear</span></a><span class="special">(</span><span class="special">)</span><span class="special">;</span>
- <span class="identifier">boost</span><span class="special">::</span><span class="identifier">optional</span><span class="special"><</span> <span class="identifier">program</span> <span class="special">></span> <a class="link" href="program_cache.html#idm46676579576144-bb"><span class="identifier">get</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="special">&</span><span class="special">)</span><span class="special">;</span>
- <span class="identifier">boost</span><span class="special">::</span><span class="identifier">optional</span><span class="special"><</span> <span class="identifier">program</span> <span class="special">></span> <a class="link" href="program_cache.html#idm46676579573232-bb"><span class="identifier">get</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="special">&</span><span class="special">,</span> <span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="special">&</span><span class="special">)</span><span class="special">;</span>
- <span class="keyword">void</span> <a class="link" href="program_cache.html#idm46676579568736-bb"><span class="identifier">insert</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="special">&</span><span class="special">,</span> <span class="keyword">const</span> <span class="identifier">program</span> <span class="special">&</span><span class="special">)</span><span class="special">;</span>
- <span class="keyword">void</span> <a class="link" href="program_cache.html#idm46676579565328-bb"><span class="identifier">insert</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="special">&</span><span class="special">,</span> <span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="special">&</span><span class="special">,</span> <span class="keyword">const</span> <span class="identifier">program</span> <span class="special">&</span><span class="special">)</span><span class="special">;</span>
- <span class="identifier">program</span> <a class="link" href="program_cache.html#idm46676579560784-bb"><span class="identifier">get_or_build</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="special">&</span><span class="special">,</span> <span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="special">&</span><span class="special">,</span>
+ <span class="comment">// <a class="link" href="program_cache.html#idm46009691544688-bb">public member functions</a></span>
+ <span class="identifier">size_t</span> <a class="link" href="program_cache.html#idm46009691544128-bb"><span class="identifier">size</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
+ <span class="identifier">size_t</span> <a class="link" href="program_cache.html#idm46009691542672-bb"><span class="identifier">capacity</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
+ <span class="keyword">void</span> <a class="link" href="program_cache.html#idm46009691541232-bb"><span class="identifier">clear</span></a><span class="special">(</span><span class="special">)</span><span class="special">;</span>
+ <span class="identifier">boost</span><span class="special">::</span><span class="identifier">optional</span><span class="special"><</span> <span class="identifier">program</span> <span class="special">></span> <a class="link" href="program_cache.html#idm46009691540080-bb"><span class="identifier">get</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="special">&</span><span class="special">)</span><span class="special">;</span>
+ <span class="identifier">boost</span><span class="special">::</span><span class="identifier">optional</span><span class="special"><</span> <span class="identifier">program</span> <span class="special">></span> <a class="link" href="program_cache.html#idm46009691537168-bb"><span class="identifier">get</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="special">&</span><span class="special">,</span> <span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="special">&</span><span class="special">)</span><span class="special">;</span>
+ <span class="keyword">void</span> <a class="link" href="program_cache.html#idm46009691532672-bb"><span class="identifier">insert</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="special">&</span><span class="special">,</span> <span class="keyword">const</span> <span class="identifier">program</span> <span class="special">&</span><span class="special">)</span><span class="special">;</span>
+ <span class="keyword">void</span> <a class="link" href="program_cache.html#idm46009691529264-bb"><span class="identifier">insert</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="special">&</span><span class="special">,</span> <span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="special">&</span><span class="special">,</span> <span class="keyword">const</span> <span class="identifier">program</span> <span class="special">&</span><span class="special">)</span><span class="special">;</span>
+ <span class="identifier">program</span> <a class="link" href="program_cache.html#idm46009691524720-bb"><span class="identifier">get_or_build</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="special">&</span><span class="special">,</span> <span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="special">&</span><span class="special">,</span>
<span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="special">&</span><span class="special">,</span> <span class="keyword">const</span> <span class="identifier">context</span> <span class="special">&</span><span class="special">)</span><span class="special">;</span>
- <span class="comment">// <a class="link" href="program_cache.html#idm46676579551072-bb">public static functions</a></span>
- <span class="keyword">static</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">shared_ptr</span><span class="special"><</span> <a class="link" href="program_cache.html" title="Class program_cache">program_cache</a> <span class="special">></span> <a class="link" href="program_cache.html#idm46676579550512-bb"><span class="identifier">get_global_cache</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">context</span> <span class="special">&</span><span class="special">)</span><span class="special">;</span>
+ <span class="comment">// <a class="link" href="program_cache.html#idm46009691515008-bb">public static functions</a></span>
+ <span class="keyword">static</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">shared_ptr</span><span class="special"><</span> <a class="link" href="program_cache.html" title="Class program_cache">program_cache</a> <span class="special">></span> <a class="link" href="program_cache.html#idm46009691514448-bb"><span class="identifier">get_global_cache</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">context</span> <span class="special">&</span><span class="special">)</span><span class="special">;</span>
<span class="special">}</span><span class="special">;</span></pre></div>
<div class="refsect1">
-<a name="idm46094034010416"></a><h2>Description</h2>
+<a name="idm46113315123840"></a><h2>Description</h2>
<p>The <a class="link" href="program_cache.html" title="Class program_cache">program_cache</a> class stores program objects in a LRU cache.</p>
<p>This class can be used to help mitigate the overhead of OpenCL's run-time kernel compilation model. Commonly used programs can be stored persistently in the cache and only compiled once on their first use.</p>
<p>Program objects are stored and retreived based on a user-defined cache key along with the options used to build the program (if any).</p>
<p>
</p>
<div class="refsect2">
-<a name="idm46094033987184"></a><h3>
+<a name="idm46113315100704"></a><h3>
<a name="boost.compute.program_cacheconstruct-copy-destruct"></a><code class="computeroutput">program_cache</code>
public
construct/copy/destruct</h3>
<div class="orderedlist"><ol class="orderedlist" type="1">
<li class="listitem">
-<pre class="literallayout"><a name="idm46676579553552-bb"></a><span class="identifier">program_cache</span><span class="special">(</span><span class="identifier">size_t</span> capacity<span class="special">)</span><span class="special">;</span></pre>
+<pre class="literallayout"><a name="idm46009691517488-bb"></a><span class="identifier">program_cache</span><span class="special">(</span><span class="identifier">size_t</span> capacity<span class="special">)</span><span class="special">;</span></pre>
<p>Creates a new program cache with space for <code class="computeroutput">capacity</code> number of program objects. </p>
</li>
<li class="listitem">
-<pre class="literallayout"><a name="idm46676579551664-bb"></a><span class="special">~</span><span class="identifier">program_cache</span><span class="special">(</span><span class="special">)</span><span class="special">;</span></pre>Destroys the program cache. </li>
+<pre class="literallayout"><a name="idm46009691515600-bb"></a><span class="special">~</span><span class="identifier">program_cache</span><span class="special">(</span><span class="special">)</span><span class="special">;</span></pre>Destroys the program cache. </li>
</ol></div>
</div>
<div class="refsect2">
-<a name="idm46094033975264"></a><h3>
-<a name="idm46676579580752-bb"></a><code class="computeroutput">program_cache</code> public member functions</h3>
+<a name="idm46113315088720"></a><h3>
+<a name="idm46009691544688-bb"></a><code class="computeroutput">program_cache</code> public member functions</h3>
<div class="orderedlist"><ol class="orderedlist" type="1">
<li class="listitem">
-<pre class="literallayout"><span class="identifier">size_t</span> <a name="idm46676579580192-bb"></a><span class="identifier">size</span><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>Returns the number of program objects currently stored in the cache. </li>
+<pre class="literallayout"><span class="identifier">size_t</span> <a name="idm46009691544128-bb"></a><span class="identifier">size</span><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>Returns the number of program objects currently stored in the cache. </li>
<li class="listitem">
-<pre class="literallayout"><span class="identifier">size_t</span> <a name="idm46676579578736-bb"></a><span class="identifier">capacity</span><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>Returns the total capacity of the cache. </li>
+<pre class="literallayout"><span class="identifier">size_t</span> <a name="idm46009691542672-bb"></a><span class="identifier">capacity</span><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>Returns the total capacity of the cache. </li>
<li class="listitem">
-<pre class="literallayout"><span class="keyword">void</span> <a name="idm46676579577296-bb"></a><span class="identifier">clear</span><span class="special">(</span><span class="special">)</span><span class="special">;</span></pre>Clears the program cache. </li>
+<pre class="literallayout"><span class="keyword">void</span> <a name="idm46009691541232-bb"></a><span class="identifier">clear</span><span class="special">(</span><span class="special">)</span><span class="special">;</span></pre>Clears the program cache. </li>
<li class="listitem">
-<pre class="literallayout"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">optional</span><span class="special"><</span> <span class="identifier">program</span> <span class="special">></span> <a name="idm46676579576144-bb"></a><span class="identifier">get</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="special">&</span> key<span class="special">)</span><span class="special">;</span></pre>
+<pre class="literallayout"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">optional</span><span class="special"><</span> <span class="identifier">program</span> <span class="special">></span> <a name="idm46009691540080-bb"></a><span class="identifier">get</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="special">&</span> key<span class="special">)</span><span class="special">;</span></pre>
<p>Returns the program object with <code class="computeroutput">key</code>. Returns a null optional if no program with <code class="computeroutput">key</code> exists in the cache. </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">optional</span><span class="special"><</span> <span class="identifier">program</span> <span class="special">></span>
-<a name="idm46676579573232-bb"></a><span class="identifier">get</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="special">&</span> key<span class="special">,</span> <span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="special">&</span> options<span class="special">)</span><span class="special">;</span></pre>
+<a name="idm46009691537168-bb"></a><span class="identifier">get</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="special">&</span> key<span class="special">,</span> <span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="special">&</span> options<span class="special">)</span><span class="special">;</span></pre>
<p>Returns the program object with <code class="computeroutput">key</code> and <code class="computeroutput">options</code>. Returns a null optional if no program with <code class="computeroutput">key</code> and <code class="computeroutput">options</code> exists in the cache. </p>
</li>
<li class="listitem">
-<pre class="literallayout"><span class="keyword">void</span> <a name="idm46676579568736-bb"></a><span class="identifier">insert</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="special">&</span> key<span class="special">,</span> <span class="keyword">const</span> <span class="identifier">program</span> <span class="special">&</span> program<span class="special">)</span><span class="special">;</span></pre>Inserts <code class="computeroutput">program</code> into the cache with <code class="computeroutput">key</code>. </li>
+<pre class="literallayout"><span class="keyword">void</span> <a name="idm46009691532672-bb"></a><span class="identifier">insert</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="special">&</span> key<span class="special">,</span> <span class="keyword">const</span> <span class="identifier">program</span> <span class="special">&</span> program<span class="special">)</span><span class="special">;</span></pre>Inserts <code class="computeroutput">program</code> into the cache with <code class="computeroutput">key</code>. </li>
<li class="listitem">
-<pre class="literallayout"><span class="keyword">void</span> <a name="idm46676579565328-bb"></a><span class="identifier">insert</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="special">&</span> key<span class="special">,</span> <span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="special">&</span> options<span class="special">,</span>
+<pre class="literallayout"><span class="keyword">void</span> <a name="idm46009691529264-bb"></a><span class="identifier">insert</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="special">&</span> key<span class="special">,</span> <span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="special">&</span> options<span class="special">,</span>
<span class="keyword">const</span> <span class="identifier">program</span> <span class="special">&</span> program<span class="special">)</span><span class="special">;</span></pre>Inserts <code class="computeroutput">program</code> into the cache with <code class="computeroutput">key</code> and <code class="computeroutput">options</code>. </li>
<li class="listitem">
-<pre class="literallayout"><span class="identifier">program</span> <a name="idm46676579560784-bb"></a><span class="identifier">get_or_build</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="special">&</span> key<span class="special">,</span> <span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="special">&</span> options<span class="special">,</span>
+<pre class="literallayout"><span class="identifier">program</span> <a name="idm46009691524720-bb"></a><span class="identifier">get_or_build</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="special">&</span> key<span class="special">,</span> <span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="special">&</span> options<span class="special">,</span>
<span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span> <span class="special">&</span> source<span class="special">,</span> <span class="keyword">const</span> <span class="identifier">context</span> <span class="special">&</span> context<span class="special">)</span><span class="special">;</span></pre>
<p>Loads the program with <code class="computeroutput">key</code> from the cache if it exists. Otherwise builds a new program with <code class="computeroutput">source</code> and <code class="computeroutput">options</code>, stores it in the cache, and returns it.</p>
<p>This is a convenience function to simplify the common pattern of attempting to load a program from the cache and, if not present, building the program from source and storing it in the cache.</p>
</ol></div>
</div>
<div class="refsect2">
-<a name="idm46094033847872"></a><h3>
-<a name="idm46676579551072-bb"></a><code class="computeroutput">program_cache</code> public static functions</h3>
+<a name="idm46113314961504"></a><h3>
+<a name="idm46009691515008-bb"></a><code class="computeroutput">program_cache</code> public static functions</h3>
<div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem">
<pre class="literallayout"><span class="keyword">static</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">shared_ptr</span><span class="special"><</span> <a class="link" href="program_cache.html" title="Class program_cache">program_cache</a> <span class="special">></span>
-<a name="idm46676579550512-bb"></a><span class="identifier">get_global_cache</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">context</span> <span class="special">&</span> context<span class="special">)</span><span class="special">;</span></pre>
+<a name="idm46009691514448-bb"></a><span class="identifier">get_global_cache</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">context</span> <span class="special">&</span> context<span class="special">)</span><span class="special">;</span></pre>
<p>Returns the global program cache for <code class="computeroutput">context</code>.</p>
<p>This global cache is used internally by Boost.Compute to store compiled program objects used by its algorithms. All Boost.Compute programs are stored with a cache key beginning with <code class="computeroutput">"__boost"</code>. User programs should avoid using the same prefix in order to prevent collisions. </p>
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