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<h1 class='fqn'><span class='in-band'>Struct <a href='../../index.html'>bitflags</a>::<wbr><a href='../index.html'>__core</a>::<wbr><a href='index.html'>sync</a>::<wbr><a class='struct' href=''>StaticRwLock</a></span><span class='out-of-band'><span id='render-detail'>
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</span><a id='src-10427' class='srclink' href='https://doc.rust-lang.org/nightly/std/sync/rwlock/struct.StaticRwLock.html?gotosrc=10427' title='goto source code'>[src]</a></span></h1>
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<pre class='rust struct'>pub struct StaticRwLock {
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// some fields omitted
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}</pre><div class='stability'><em class='stab unstable'>Unstable (<code>static_rwlock</code>)<p>: may be merged with RwLock in the future</p>
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</em></div><div class='docblock'><p>Structure representing a statically allocated RwLock.</p>
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<p>This structure is intended to be used inside of a <code>static</code> and will provide
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automatic global access as well as lazy initialization. The internal
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resources of this RwLock, however, must be manually deallocated.</p>
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<h1 id='examples' class='section-header'><a href='#examples'>Examples</a></h1>
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<pre class='rust rust-example-rendered'>
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<span class='attribute'>#<span class='op'>!</span>[<span class='ident'>feature</span>(<span class='ident'>static_rwlock</span>)]</span>
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<span class='kw'>use</span> <span class='ident'>std</span>::<span class='ident'>sync</span>::{<span class='ident'>StaticRwLock</span>, <span class='ident'>RW_LOCK_INIT</span>};
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<span class='kw'>static</span> <span class='ident'>LOCK</span>: <span class='ident'>StaticRwLock</span> <span class='op'>=</span> <span class='ident'>RW_LOCK_INIT</span>;
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{
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<span class='kw'>let</span> <span class='ident'>_g</span> <span class='op'>=</span> <span class='ident'>LOCK</span>.<span class='ident'>read</span>().<span class='ident'>unwrap</span>();
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<span class='comment'>// ... shared read access</span>
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}
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{
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<span class='kw'>let</span> <span class='ident'>_g</span> <span class='op'>=</span> <span class='ident'>LOCK</span>.<span class='ident'>write</span>().<span class='ident'>unwrap</span>();
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<span class='comment'>// ... exclusive write access</span>
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}
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<span class='kw'>unsafe</span> { <span class='ident'>LOCK</span>.<span class='ident'>destroy</span>() } <span class='comment'>// free all resources</span></pre>
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