82 lines
3.7 KiB
HTML
82 lines
3.7 KiB
HTML
<html lang="en">
|
|
<head>
|
|
<title>Hash Tables - Untitled</title>
|
|
<meta http-equiv="Content-Type" content="text/html">
|
|
<meta name="description" content="Untitled">
|
|
<meta name="generator" content="makeinfo 4.7">
|
|
<link title="Top" rel="start" href="index.html#Top">
|
|
<link rel="up" href="BFD-front-end.html#BFD-front-end" title="BFD front end">
|
|
<link rel="prev" href="Linker-Functions.html#Linker-Functions" title="Linker Functions">
|
|
<link href="http://www.gnu.org/software/texinfo/" rel="generator-home" title="Texinfo Homepage">
|
|
<!--
|
|
This file documents the BFD library.
|
|
|
|
Copyright (C) 1991, 2000, 2001, 2003, 2006, 2007 Free Software Foundation, Inc.
|
|
|
|
Permission is granted to copy, distribute and/or modify this document
|
|
under the terms of the GNU Free Documentation License, Version 1.1 or
|
|
any later version published by the Free Software Foundation; with the
|
|
Invariant Sections being ``GNU General Public License'' and ``Funding
|
|
Free Software'', the Front-Cover texts being (a) (see below), and with
|
|
the Back-Cover Texts being (b) (see below). A copy of the license is
|
|
included in the section entitled ``GNU Free Documentation License''.
|
|
|
|
(a) The FSF's Front-Cover Text is:
|
|
|
|
A GNU Manual
|
|
|
|
(b) The FSF's Back-Cover Text is:
|
|
|
|
You have freedom to copy and modify this GNU Manual, like GNU
|
|
software. Copies published by the Free Software Foundation raise
|
|
funds for GNU development.-->
|
|
<meta http-equiv="Content-Style-Type" content="text/css">
|
|
<style type="text/css"><!--
|
|
pre.display { font-family:inherit }
|
|
pre.format { font-family:inherit }
|
|
pre.smalldisplay { font-family:inherit; font-size:smaller }
|
|
pre.smallformat { font-family:inherit; font-size:smaller }
|
|
pre.smallexample { font-size:smaller }
|
|
pre.smalllisp { font-size:smaller }
|
|
span.sc { font-variant:small-caps }
|
|
span.roman { font-family: serif; font-weight: normal; }
|
|
--></style>
|
|
</head>
|
|
<body>
|
|
<div class="node">
|
|
<p>
|
|
<a name="Hash-Tables"></a>Previous: <a rel="previous" accesskey="p" href="Linker-Functions.html#Linker-Functions">Linker Functions</a>,
|
|
Up: <a rel="up" accesskey="u" href="BFD-front-end.html#BFD-front-end">BFD front end</a>
|
|
<hr><br>
|
|
</div>
|
|
|
|
<h3 class="section">2.18 Hash Tables</h3>
|
|
|
|
<p><a name="index-Hash-tables-1381"></a>BFD provides a simple set of hash table functions. Routines
|
|
are provided to initialize a hash table, to free a hash table,
|
|
to look up a string in a hash table and optionally create an
|
|
entry for it, and to traverse a hash table. There is
|
|
currently no routine to delete an string from a hash table.
|
|
|
|
<p>The basic hash table does not permit any data to be stored
|
|
with a string. However, a hash table is designed to present a
|
|
base class from which other types of hash tables may be
|
|
derived. These derived types may store additional information
|
|
with the string. Hash tables were implemented in this way,
|
|
rather than simply providing a data pointer in a hash table
|
|
entry, because they were designed for use by the linker back
|
|
ends. The linker may create thousands of hash table entries,
|
|
and the overhead of allocating private data and storing and
|
|
following pointers becomes noticeable.
|
|
|
|
<p>The basic hash table code is in <code>hash.c</code>.
|
|
|
|
<ul class="menu">
|
|
<li><a accesskey="1" href="Creating-and-Freeing-a-Hash-Table.html#Creating-and-Freeing-a-Hash-Table">Creating and Freeing a Hash Table</a>
|
|
<li><a accesskey="2" href="Looking-Up-or-Entering-a-String.html#Looking-Up-or-Entering-a-String">Looking Up or Entering a String</a>
|
|
<li><a accesskey="3" href="Traversing-a-Hash-Table.html#Traversing-a-Hash-Table">Traversing a Hash Table</a>
|
|
<li><a accesskey="4" href="Deriving-a-New-Hash-Table-Type.html#Deriving-a-New-Hash-Table-Type">Deriving a New Hash Table Type</a>
|
|
</ul>
|
|
|
|
</body></html>
|
|
|