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</pre><pre class="rust ">
<span class="doccomment">//! An `OpenCL` platform identifier.</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! Documentation copied from [https://www.khronos.org/registry/cl/sdk/1.2/doc</span>
<span class="doccomment">//! s/man/xhtml/clGetPlatformInfo.html](https://www.khronos.org/registry/cl/sd</span>
<span class="doccomment">//! k/1.2/docs/man/xhtml/clGetPlatformInfo.html)</span>
<span class="kw">use</span> <span class="ident">std</span>;
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">ops</span>::{<span class="ident">Deref</span>, <span class="ident">DerefMut</span>};
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">str</span>::<span class="ident">SplitWhitespace</span>;
<span class="kw">use</span> <span class="ident">ffi</span>::<span class="ident">cl_platform_id</span>;
<span class="kw">use</span> <span class="ident">core</span>::{<span class="self">self</span>, <span class="ident">PlatformId</span> <span class="kw">as</span> <span class="ident">PlatformIdCore</span>, <span class="ident">PlatformInfo</span>, <span class="ident">PlatformInfoResult</span>, <span class="ident">ClPlatformIdPtr</span>};
<span class="kw">use</span> <span class="ident">core</span>::<span class="ident">error</span>::{<span class="prelude-ty">Result</span> <span class="kw">as</span> <span class="ident">OclCoreResult</span>};
<span class="kw">use</span> <span class="ident">error</span>::{<span class="prelude-ty">Result</span> <span class="kw">as</span> <span class="ident">OclResult</span>};
<span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Debug</span>, <span class="ident">Fail</span>)]</span>
<span class="kw">pub</span> <span class="kw">enum</span> <span class="ident">PlatformError</span> {
<span class="attribute">#[<span class="ident">fail</span>(<span class="ident">display</span> <span class="op">=</span> <span class="string">"No platforms found."</span>)]</span>
<span class="ident">NoPlatforms</span>,
}
<span class="doccomment">/// Extensions of a platform.</span>
<span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Debug</span>, <span class="ident">Clone</span>)]</span>
<span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">Extensions</span> {
<span class="ident">inner</span>: <span class="ident">String</span>,
}
<span class="kw">impl</span> <span class="ident">Extensions</span> {
<span class="doccomment">/// Iterate over platform extensions, split at whitespace.</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">iter</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="ident">SplitWhitespace</span> {
<span class="self">self</span>.<span class="ident">inner</span>.<span class="ident">split_whitespace</span>()
}
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">as_str</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="kw-2">&</span><span class="ident">str</span> {
<span class="kw-2">&</span><span class="self">self</span>.<span class="ident">inner</span>
}
}
<span class="doccomment">/// A platform identifier.</span>
<span class="doccomment">///</span>
<span class="attribute">#[<span class="ident">repr</span>(<span class="ident">C</span>)]</span>
<span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Clone</span>, <span class="ident">Copy</span>, <span class="ident">Debug</span>)]</span>
<span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">Platform</span>(<span class="ident">PlatformIdCore</span>);
<span class="kw">impl</span> <span class="ident">Platform</span> {
<span class="doccomment">/// Returns a list of all platforms avaliable on the host machine.</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">list</span>() <span class="op">-></span> <span class="ident">Vec</span><span class="op"><</span><span class="ident">Platform</span><span class="op">></span> {
<span class="kw">let</span> <span class="ident">list_core</span> <span class="op">=</span> <span class="ident">core</span>::<span class="ident">get_platform_ids</span>()
.<span class="ident">expect</span>(<span class="string">"Platform::list: Error retrieving platform list"</span>);
<span class="ident">list_core</span>.<span class="ident">into_iter</span>().<span class="ident">map</span>(<span class="ident">Platform</span>::<span class="ident">new</span>).<span class="ident">collect</span>()
}
<span class="doccomment">/// Returns the first available platform.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// This method differs from `Platform::default()` in two ways. First, it</span>
<span class="doccomment">/// ignores the `OCL_DEFAULT_PLATFORM_IDX` environment variable</span>
<span class="doccomment">/// (`Platform::default` always respects it). Second, this function will</span>
<span class="doccomment">/// not panic if no platforms are available but will instead return an</span>
<span class="doccomment">/// error.</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">first</span>() <span class="op">-></span> <span class="ident">OclResult</span><span class="op"><</span><span class="ident">Platform</span><span class="op">></span> {
<span class="ident">core</span>::<span class="ident">get_platform_ids</span>()<span class="question-mark">?</span>
.<span class="ident">first</span>()
.<span class="ident">map</span>(<span class="op">|</span><span class="kw-2">&</span><span class="ident">p</span><span class="op">|</span> <span class="ident">Platform</span>::<span class="ident">new</span>(<span class="ident">p</span>))
.<span class="ident">ok_or</span>(<span class="ident">PlatformError</span>::<span class="ident">NoPlatforms</span>.<span class="ident">into</span>())
}
<span class="doccomment">/// Creates a new `Platform` from a `PlatformIdCore`.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ## Safety</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Not meant to be called unless you know what you're doing.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Use list to get a list of platforms.</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">new</span>(<span class="ident">id_core</span>: <span class="ident">PlatformIdCore</span>) <span class="op">-></span> <span class="ident">Platform</span> {
<span class="ident">Platform</span>(<span class="ident">id_core</span>)
}
<span class="doccomment">/// Returns a list of `Platform`s from a list of `PlatformIdCore`s</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">list_from_core</span>(<span class="ident">platforms</span>: <span class="ident">Vec</span><span class="op"><</span><span class="ident">PlatformIdCore</span><span class="op">></span>) <span class="op">-></span> <span class="ident">Vec</span><span class="op"><</span><span class="ident">Platform</span><span class="op">></span> {
<span class="ident">platforms</span>.<span class="ident">into_iter</span>().<span class="ident">map</span>(<span class="ident">Platform</span>::<span class="ident">new</span>).<span class="ident">collect</span>()
}
<span class="doccomment">/// Returns info about the platform.</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">info</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">info_kind</span>: <span class="ident">PlatformInfo</span>) <span class="op">-></span> <span class="ident">OclCoreResult</span><span class="op"><</span><span class="ident">PlatformInfoResult</span><span class="op">></span> {
<span class="ident">core</span>::<span class="ident">get_platform_info</span>(<span class="kw-2">&</span><span class="self">self</span>.<span class="number">0</span>, <span class="ident">info_kind</span>)
}
<span class="doccomment">/// Returns the platform profile as a string.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Returns the profile name supported by the implementation. The profile</span>
<span class="doccomment">/// name returned can be one of the following strings:</span>
<span class="doccomment">///</span>
<span class="doccomment">/// * FULL_PROFILE - if the implementation supports the OpenCL</span>
<span class="doccomment">/// specification (functionality defined as part of the core</span>
<span class="doccomment">/// specification and does not require any extensions to be supported).</span>
<span class="doccomment">///</span>
<span class="doccomment">/// * EMBEDDED_PROFILE - if the implementation supports the OpenCL</span>
<span class="doccomment">/// embedded profile. The embedded profile is defined to be a subset for</span>
<span class="doccomment">/// each version of OpenCL.</span>
<span class="doccomment">///</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">profile</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="ident">OclCoreResult</span><span class="op"><</span><span class="ident">String</span><span class="op">></span> {
<span class="ident">core</span>::<span class="ident">get_platform_info</span>(<span class="kw-2">&</span><span class="self">self</span>.<span class="number">0</span>, <span class="ident">PlatformInfo</span>::<span class="ident">Profile</span>).<span class="ident">map</span>(<span class="op">|</span><span class="ident">r</span><span class="op">|</span> <span class="ident">r</span>.<span class="ident">into</span>())
}
<span class="doccomment">/// Returns the platform driver version as a string.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Returns the OpenCL version supported by the implementation. This</span>
<span class="doccomment">/// version string has the following format:</span>
<span class="doccomment">///</span>
<span class="doccomment">/// * OpenCL<space><major_version.minor_version><space><platform-specific</span>
<span class="doccomment">/// information></span>
<span class="doccomment">///</span>
<span class="doccomment">/// * The major_version.minor_version value returned will be '1.2'.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// * TODO: Convert this to new version system returning an `OpenclVersion`.</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">version</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="ident">OclCoreResult</span><span class="op"><</span><span class="ident">String</span><span class="op">></span> {
<span class="ident">core</span>::<span class="ident">get_platform_info</span>(<span class="kw-2">&</span><span class="self">self</span>.<span class="number">0</span>, <span class="ident">PlatformInfo</span>::<span class="ident">Version</span>).<span class="ident">map</span>(<span class="op">|</span><span class="ident">r</span><span class="op">|</span> <span class="ident">r</span>.<span class="ident">into</span>())
}
<span class="doccomment">/// Returns the platform name as a string.</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">name</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="ident">OclCoreResult</span><span class="op"><</span><span class="ident">String</span><span class="op">></span> {
<span class="ident">core</span>::<span class="ident">get_platform_info</span>(<span class="kw-2">&</span><span class="self">self</span>.<span class="number">0</span>, <span class="ident">PlatformInfo</span>::<span class="ident">Name</span>).<span class="ident">map</span>(<span class="op">|</span><span class="ident">r</span><span class="op">|</span> <span class="ident">r</span>.<span class="ident">into</span>())
}
<span class="doccomment">/// Returns the platform vendor as a string.</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">vendor</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="ident">OclCoreResult</span><span class="op"><</span><span class="ident">String</span><span class="op">></span> {
<span class="ident">core</span>::<span class="ident">get_platform_info</span>(<span class="kw-2">&</span><span class="self">self</span>.<span class="number">0</span>, <span class="ident">PlatformInfo</span>::<span class="ident">Vendor</span>).<span class="ident">map</span>(<span class="op">|</span><span class="ident">r</span><span class="op">|</span> <span class="ident">r</span>.<span class="ident">into</span>())
}
<span class="doccomment">/// Returns the list of platform extensions.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Extensions defined here must be supported by all devices associated</span>
<span class="doccomment">/// with this platform.</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">extensions</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="ident">OclCoreResult</span><span class="op"><</span><span class="ident">Extensions</span><span class="op">></span> {
<span class="kw">let</span> <span class="ident">extensions</span> <span class="op">=</span> <span class="ident">core</span>::<span class="ident">get_platform_info</span>(<span class="kw-2">&</span><span class="self">self</span>.<span class="number">0</span>, <span class="ident">PlatformInfo</span>::<span class="ident">Extensions</span>);
<span class="ident">extensions</span>.<span class="ident">map</span>(<span class="op">|</span><span class="ident">e</span><span class="op">|</span> <span class="ident">Extensions</span> { <span class="ident">inner</span>: <span class="ident">e</span>.<span class="ident">into</span>() })
}
<span class="doccomment">/// Returns a reference to the underlying `PlatformIdCore`.</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">as_core</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="kw-2">&</span><span class="ident">PlatformIdCore</span> {
<span class="kw-2">&</span><span class="self">self</span>.<span class="number">0</span>
}
<span class="kw">fn</span> <span class="ident">fmt_info</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">f</span>: <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">std</span>::<span class="ident">fmt</span>::<span class="ident">Formatter</span>) <span class="op">-></span> <span class="ident">std</span>::<span class="ident">fmt</span>::<span class="prelude-ty">Result</span> {
<span class="ident">f</span>.<span class="ident">debug_struct</span>(<span class="string">"Platform"</span>)
.<span class="ident">field</span>(<span class="string">"Profile"</span>, <span class="kw-2">&</span><span class="self">self</span>.<span class="ident">info</span>(<span class="ident">PlatformInfo</span>::<span class="ident">Profile</span>))
.<span class="ident">field</span>(<span class="string">"Version"</span>, <span class="kw-2">&</span><span class="self">self</span>.<span class="ident">info</span>(<span class="ident">PlatformInfo</span>::<span class="ident">Version</span>))
.<span class="ident">field</span>(<span class="string">"Name"</span>, <span class="kw-2">&</span><span class="self">self</span>.<span class="ident">info</span>(<span class="ident">PlatformInfo</span>::<span class="ident">Name</span>))
.<span class="ident">field</span>(<span class="string">"Vendor"</span>, <span class="kw-2">&</span><span class="self">self</span>.<span class="ident">info</span>(<span class="ident">PlatformInfo</span>::<span class="ident">Vendor</span>))
.<span class="ident">field</span>(<span class="string">"Extensions"</span>, <span class="kw-2">&</span><span class="self">self</span>.<span class="ident">info</span>(<span class="ident">PlatformInfo</span>::<span class="ident">Extensions</span>))
.<span class="ident">finish</span>()
}
}
<span class="kw">unsafe</span> <span class="kw">impl</span> <span class="ident">ClPlatformIdPtr</span> <span class="kw">for</span> <span class="ident">Platform</span> {
<span class="kw">fn</span> <span class="ident">as_ptr</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="ident">cl_platform_id</span> {
<span class="self">self</span>.<span class="number">0</span>.<span class="ident">as_ptr</span>()
}
}
<span class="comment">// unsafe impl<'a> ClPlatformIdPtr for &'a Platform {}</span>
<span class="kw">impl</span> <span class="ident">Default</span> <span class="kw">for</span> <span class="ident">Platform</span> {
<span class="doccomment">/// Returns the first (0th) platform available, or the platform specified</span>
<span class="doccomment">/// by the `OCL_DEFAULT_PLATFORM_IDX` environment variable if it is set.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ### Panics</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Panics upon any OpenCL API error.</span>
<span class="doccomment">///</span>
<span class="kw">fn</span> <span class="ident">default</span>() <span class="op">-></span> <span class="ident">Platform</span> {
<span class="kw">let</span> <span class="ident">dflt_plat_core</span> <span class="op">=</span> <span class="ident">core</span>::<span class="ident">default_platform</span>().<span class="ident">expect</span>(<span class="string">"Platform::default()"</span>);
<span class="ident">Platform</span>::<span class="ident">new</span>(<span class="ident">dflt_plat_core</span>)
}
}
<span class="kw">impl</span> <span class="ident">From</span><span class="op"><</span><span class="ident">PlatformIdCore</span><span class="op">></span> <span class="kw">for</span> <span class="ident">Platform</span> {
<span class="kw">fn</span> <span class="ident">from</span>(<span class="ident">core</span>: <span class="ident">PlatformIdCore</span>) <span class="op">-></span> <span class="ident">Platform</span> {
<span class="ident">Platform</span>(<span class="ident">core</span>)
}
}
<span class="kw">impl</span> <span class="ident">From</span><span class="op"><</span><span class="ident">Platform</span><span class="op">></span> <span class="kw">for</span> <span class="ident">String</span> {
<span class="kw">fn</span> <span class="ident">from</span>(<span class="ident">p</span>: <span class="ident">Platform</span>) <span class="op">-></span> <span class="ident">String</span> {
<span class="macro">format</span><span class="macro">!</span>(<span class="string">"{}"</span>, <span class="ident">p</span>)
}
}
<span class="kw">impl</span> <span class="ident">From</span><span class="op"><</span><span class="ident">Platform</span><span class="op">></span> <span class="kw">for</span> <span class="ident">PlatformIdCore</span> {
<span class="kw">fn</span> <span class="ident">from</span>(<span class="ident">p</span>: <span class="ident">Platform</span>) <span class="op">-></span> <span class="ident">PlatformIdCore</span> {
<span class="ident">p</span>.<span class="number">0</span>
}
}
<span class="kw">impl</span><span class="op"><</span><span class="lifetime">'a</span><span class="op">></span> <span class="ident">From</span><span class="op"><</span><span class="kw-2">&</span><span class="lifetime">'a</span> <span class="ident">Platform</span><span class="op">></span> <span class="kw">for</span> <span class="ident">PlatformIdCore</span> {
<span class="kw">fn</span> <span class="ident">from</span>(<span class="ident">p</span>: <span class="kw-2">&</span><span class="ident">Platform</span>) <span class="op">-></span> <span class="ident">PlatformIdCore</span> {
<span class="ident">p</span>.<span class="number">0</span>.<span class="ident">clone</span>()
}
}
<span class="kw">impl</span> <span class="ident">std</span>::<span class="ident">fmt</span>::<span class="ident">Display</span> <span class="kw">for</span> <span class="ident">Platform</span> {
<span class="kw">fn</span> <span class="ident">fmt</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">f</span>: <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">std</span>::<span class="ident">fmt</span>::<span class="ident">Formatter</span>) <span class="op">-></span> <span class="ident">std</span>::<span class="ident">fmt</span>::<span class="prelude-ty">Result</span> {
<span class="self">self</span>.<span class="ident">fmt_info</span>(<span class="ident">f</span>)
}
}
<span class="kw">impl</span> <span class="ident">Deref</span> <span class="kw">for</span> <span class="ident">Platform</span> {
<span class="kw">type</span> <span class="ident">Target</span> <span class="op">=</span> <span class="ident">PlatformIdCore</span>;
<span class="kw">fn</span> <span class="ident">deref</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="kw-2">&</span><span class="ident">PlatformIdCore</span> {
<span class="kw-2">&</span><span class="self">self</span>.<span class="number">0</span>
}
}
<span class="kw">impl</span> <span class="ident">DerefMut</span> <span class="kw">for</span> <span class="ident">Platform</span> {
<span class="kw">fn</span> <span class="ident">deref_mut</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>) <span class="op">-></span> <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">PlatformIdCore</span> {
<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>.<span class="number">0</span>
}
}
</pre>
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