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<html><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968"><title>function::speculation</title><meta name="generator" content="DocBook XSL Stylesheets V1.69.1"><link rel="start" href="index.html" title="SystemTap Tapset Reference Manual"><link rel="up" href="ch31.html" title="Chapter 31. Speculation"><link rel="prev" href="re575.html" title="function::speculate"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center"><span>function::speculation</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="re575.html">Prev</a> </td><th width="60%" align="center">Chapter 31. Speculation</th><td width="20%" align="right"> </td></tr></table><hr></div><div class="refentry" lang="en"><a name="API-speculation"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>function::speculation —
Allocate a new id for speculative output
</p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><pre class="programlisting">
speculation:long()
</pre></div><div class="refsect1" lang="en"><a name="idp13642240"></a><h2>Arguments</h2><p>
None
</p></div><div class="refsect1" lang="en"><a name="idp13643456"></a><h2>Description</h2><p>
</p><p>
The <code class="function">speculation</code> function is called when a new speculation buffer is needed.
It returns an id for the speculative output.
There can be multiple threads being speculated on concurrently.
This id is used by other speculation functions to keep the threads
separate.
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