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<htmlxmlns="http://www.w3.org/1999/xhtml"><head><title>Concurrency__AbstractAddress (infer.Concurrency__AbstractAddress)</title><linkrel="stylesheet"href="../../odoc.css"/><metacharset="utf-8"/><metaname="generator"content="odoc 1.5.1"/><metaname="viewport"content="width=device-width,initial-scale=1.0"/><scriptsrc="../../highlight.pack.js"></script><script>hljs.initHighlightingOnLoad();</script></head><body><divclass="content"><header><nav><ahref="../index.html">Up</a>–<ahref="../index.html">infer</a>» Concurrency__AbstractAddress</nav><h1>Module <code>Concurrency__AbstractAddress</code></h1></header><divclass="spec module"id="module-F"><ahref="#module-F"class="anchor"></a><code><spanclass="keyword">module</span> F = Stdlib.Format</code></div><aside><p>Type meant to represent abstract addresses based on access paths. It currently distinguishes between paths</p><ul><li>rooted at formal parameters (these are identified by the parameter index and the path without the root variable, though that variable is kept for pretty printing);</li><li>rooted at global variables;</li><li>non access-path expressions representing class objects (java only).</li></ul><p>Notably, there are no addresses rooted at locals (because proving aliasing between those is difficult).</p><p>There are two notions of equality:</p><ul><li>Equality for comparing two addresses within the same thread/process/trace. Under this, identical globals and identical class objects compare equal. Parameter-rooted paths compare equal if their parameter indices, types and lists of accesses are equal.</li><li>Equality for comparing two addresses in two distinct threads/traces. Globals and class objects are compared in the same way, but parameter-rooted paths need only have equal access lists (ie <code>x.f.g == y.f.g</code>). This allows demonically aliasing parameters in *distinct* threads.</li></ul></aside><div><divclass="spec include"><divclass="doc"><detailsopen="open"><summary><spanclass="def"><code><spanclass="keyword">include</span><ahref="../IStdlib/PrettyPrintable/index.html#module-type-PrintableOrderedType">IStdlib.PrettyPrintable.PrintableOrderedType</a></code></span></summary><div><divclass="spec include"><divclass="doc"><detailsopen="open"><summary><spanclass="def"><code><spanclass="keyword">include</span><ahref="../IStdlib/index.html#module-IStd">IStdlib.IStd</a>.Caml.Set.OrderedType</code></span></summary><dl><dtclass="spec type"id="type-t"><ahref="#type-t"class="anchor"></a><code><spanclass="keyword">type</span> t</code></dt></dl><dl><dtclass="spec value"id="val-compare"><ahref="#val-compare"class="anchor"></a><code><spanclass="keyword">val</span> compare : <ahref="index.html#type-t">t</a><span>-></span><ahref="index.html#type-t">t</a><span>-></span> int</code></dt></dl></details></div></div></div><div><divclass="spec include"><divclass="doc"><detailsopen="open"><summary><spanclass="def"><code><spanclass="keyword">include</span><ahref="../IStdlib/PrettyPrintable/index.html#module-type-PrintableType">IStdlib.PrettyPrintable.PrintableType</a><spanclass="keyword">with</span><spanclass="keyword">type</span><ahref="../IStdlib/PrettyPrintable/module-type-PrintableType/index.html#type-t">t</a> := <ahref="index.html#type-t">t</a></code></span></summary><dl><dtclass="spec type"id="type-t"><ahref="#type-t"class="anchor"></a><code><spanclass="keyword">type</span> t</code></dt></dl><dl><dtclass="spec value"id="val-pp"><ahref="#val-pp"class="anchor"></a><code><spanclass="keyword">val</span> pp : <ahref="../IStdlib/PrettyPrintable/index.html#module-F">IStdlib.PrettyPrintable.F</a>.formatter <span>-></span><ahref="index.html#type-t">t</a><span>-></span> unit</code></dt></dl></details></div></div></div></details></div></div></div><dl><dtclass="spec value"id="val-describe"><ahref="#val-describe"class="anchor"></a><code><spanclass="keyword">val</span> describe : <ahref="index.html#module-F">F</a>.formatter <span>-></span><ahref="index.html#type-t">t</a><span>-></span> unit</code></dt><dd><p>human readable description</p></dd></dl><dl><dtclass="spec value"id="val-equal"><ahref="#val-equal"class="anchor"></a><code><spanclass="keyword">val</span> equal : <ahref="index.html#type-t">t</a><span>-></span><ahref="index.html#type-t">t</a><span>-></span> bool</code></dt><dtclass="spec value"id="val-equal_across_threads"><ahref="#val-equal_across_threads"class="anchor"></a><code><spanclass="keyword">val</span> equal_across_threads : <ahref="../IR/Tenv/index.html#type-t">IR.Tenv.t</a><span>-></span><ahref="index.html#type-t">t</a><span>-></span><ahref="index.html#type-t">t</a><span>-></span> bool</code></dt><dtclass="spec value"id="val-root_class"><ahref="#val-root_class"class="anchor"></a><code><spanclass="keyword">val</span> root_class : <ahref="index.html#type-t">t</a><span>-></span><span><ahref="../IR/Typ/index.html#type-name">IR.Typ.name</a> option</span></code></dt><dd><p>Class of the root variable of the expression representing the address</p></dd></dl><dl><dtclass="spec value"id="val-get_typ"><ahref="#val-get_typ"class="anchor"></a><code><spanclass="keyword">val</span> get_typ : <ahref="../IR/Tenv/index.html#type-t">IR.Tenv.t</a><span>-></span><ahref="index.html#type-t">t</a><span>-></span><span><ahref="../IR/Typ/index.html#type-t">IR.Typ.t</a> option</span></code></dt><dtclass="spec value"id="val-make"><ahref="#val-make"class="anchor"></a><code><spanclass="keyword">val</span> make : <ahref="../Absint/FormalMap/index.html#type-t">Absint.FormalMap.t</a><span>-></span><ahref="../Absint/HilExp/index.html#type-t">Absint.HilExp.t</a><span>-></span><span><ahref="index.html#type-t">t</a> option</span></code></dt><dd><p>convert an expression to a canonical form for an address</p></dd></dl><dl><dtclass="spec value"id="val-is_class_object"><ahref="#val-is_class_object"class="anchor"></a><code><spanclass="keyword">val</span> is_class_object : <ahref="index.html#type-t">t</a><span>-></span> bool</code></dt><dd><p>is the address a Java class object such as in <code>synchronized(MyClass.class){}</code> or <code>static synchronized void foo()</code></p></dd></dl><dl><dtclass="spec type"id="type-subst"><ahref="#type-subst"class="anchor"></a><code><spanclass="keyword">type</span> subst</code></dt><dd><p>A substitution from formal position indices to address options. <code>None</code> is used to for actuals that cannot be resolved to an address (eg local-rooted paths or arithmetic expressions).</p></dd></dl><dl><dtclass="spec value"id="val-pp_subst"><ahref="#val-pp_subst"class="anchor"></a><code><spanclass="keyword">val</span> pp_subst : <ahref="index.html#module-F">F</a>.formatter <span>-></span><ahref="index.html#type-subst">subst</a><span>-></span> unit</code></dt><dtclass="spec value"id="val-make_subst"><ahref="#val-make_subst"class="anchor"></a><code><spanclass="keyword">val</span> make_subst : <ahref="../Absint/FormalMap/index.html#type-t">Absint.FormalMap.t</a><span>-></span><span><ahref="../Absint/HilExp/index.html#type-t">Absint.HilExp.t</a> list</span><span>-></span><ahref="index.html#type-subst">subst</a></code></dt><dtclass="spec value"id="val-apply_subst"><ahref="#val-apply_subst"class="anchor"></a><code><spanclass="keyword">val</span> apply_subst : <ahref="index.html#type-subst">subst</a><span>-></span><ahref="index.html#type-t">t</a><span>-></span><span><ahref="index.html#type-t">t</a> option</span></code></dt></dl></div></body></html>
