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<html xmlns="http://www.w3.org/1999/xhtml"><head><title>Trace_thread_local_storage (trace.Trace_thread_local_storage)</title><meta charset="utf-8"/><link rel="stylesheet" href="../../_odoc-theme/odoc.css"/><meta name="generator" content="odoc 3.1.0"/><meta name="viewport" content="width=device-width,initial-scale=1.0"/><script src="../../highlight.pack.js"></script><script>hljs.initHighlightingOnLoad();</script></head><body class="odoc"><nav class="odoc-nav"><a href="../index.html">Up</a> – <a href="../../index.html">Index</a> » <a href="../index.html">trace</a> » Trace_thread_local_storage</nav><header class="odoc-preamble"><h1>Module <code><span>Trace_thread_local_storage</span></code></h1><p>use <code>thread-local-storage</code> to store ambient spans.</p><p>This doesn't work with cooperative concurrency (Eio, Lwt, etc) but is fine in a threaded context.</p><ul class="at-tags"><li class="since"><span class="at-tag">since</span> 0.12</li></ul></header><div class="odoc-content"><div class="odoc-spec"><div class="spec value anchored" id="val-k_span"><a href="#val-k_span" class="anchor"></a><code><span><span class="keyword">val</span> k_span : <span><a href="../Trace_core/index.html#type-span">Trace_core.span</a> <a href="../../thread-local-storage/Thread_local_storage/index.html#type-t">Thread_local_storage.t</a></span></span></code></div><div class="spec-doc"><p>Key to access the current span</p></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-provider"><a href="#val-provider" class="anchor"></a><code><span><span class="keyword">val</span> provider : <a href="../Trace_core/Ambient_span_provider/index.html#type-t">Trace_core.Ambient_span_provider.t</a></span></code></div><div class="spec-doc"><p>Provider that uses <code>Thread_local_storage</code> to store the current ambient span. This works well when concurrency is based on thread, or if there is no concurrency.</p></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-setup"><a href="#val-setup" class="anchor"></a><code><span><span class="keyword">val</span> setup : <span>unit <span class="arrow">-></span></span> unit</span></code></div><div class="spec-doc"><p>Install the provider</p></div></div></div></body></html>
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