<main><divclass="width-limiter"><navclass="sub"><formclass="search-form"><span></span><divid="sidebar-button"tabindex="-1"><ahref="../../tracing_core/all.html"title="show sidebar"></a></div><inputclass="search-input"name="search"aria-label="Run search in the documentation"autocomplete="off"spellcheck="false"placeholder="Click or press ‘S’ to search, ‘?’ for more options…"type="search"><divid="help-button"tabindex="-1"><ahref="../../help.html"title="help">?</a></div><divid="settings-menu"tabindex="-1"><ahref="../../settings.html"title="settings"><imgwidth="22"height="22"alt="Change settings"src="../../static.files/wheel-7b819b6101059cd0.svg"></a></div></form></nav><sectionid="main-content"class="content"><divclass="main-heading"><h1>Function <ahref="../index.html">tracing_core</a>::<wbr><ahref="index.html">callsite</a>::<wbr><aclass="fn"href="#">rebuild_interest_cache</a><buttonid="copy-path"title="Copy item path to clipboard"><imgsrc="../../static.files/clipboard-7571035ce49a181d.svg"width="19"height="18"alt="Copy item path"></button></h1><spanclass="out-of-band"><aclass="src"href="../../src/tracing_core/callsite.rs.html#223-225">source</a> · <buttonid="toggle-all-docs"title="collapse all docs">[<span>−</span>]</button></span></div><preclass="rust item-decl"><code>pub fn rebuild_interest_cache()</code></pre><detailsclass="toggle top-doc"open><summaryclass="hideme"><span>Expand description</span></summary><divclass="docblock"><p>Clear and reregister interest on every <ahref="../trait.Callsite.html"title="trait tracing_core::Callsite"><code>Callsite</code></a></p>
<p>This function is intended for runtime reconfiguration of filters on traces
when the filter recalculation is much less frequent than trace events are.
The alternative is to have the <ahref="../trait.Subscriber.html"title="trait tracing_core::Subscriber"><code>Subscriber</code></a> that supports runtime
reconfiguration of filters always return <ahref="../subscriber/struct.Interest.html#method.sometimes"title="associated function tracing_core::subscriber::Interest::sometimes"><code>Interest::sometimes()</code></a> so that
<ahref="../trait.Subscriber.html#tymethod.enabled"title="trait tracing_core::Subscriber"><code>enabled</code></a> is evaluated for every event.</p>
<p>This function will also re-compute the global maximum level as determined by
the <ahref="../trait.Subscriber.html#method.max_level_hint"title="method tracing_core::Subscriber::max_level_hint"><code>max_level_hint</code></a> method. If a <ahref="../trait.Subscriber.html"title="trait tracing_core::Subscriber"><code>Subscriber</code></a>
implementation changes the value returned by its <code>max_level_hint</code>
implementation at runtime, then it <strong>must</strong> call this function after that
value changes, in order for the change to be reflected.</p>
<p>See the <ahref="index.html#rebuilding-cached-interest"title="mod tracing_core::callsite">documentation on callsite interest caching</a> for
additional information on this function’s usage.</p>
