You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
85 lines
4.1 KiB
HTML
85 lines
4.1 KiB
HTML
<html lang="en">
|
|
<head>
|
|
<title>Creating and Freeing a Hash Table - Untitled</title>
|
|
<meta http-equiv="Content-Type" content="text/html">
|
|
<meta name="description" content="Untitled">
|
|
<meta name="generator" content="makeinfo 4.13">
|
|
<link title="Top" rel="start" href="index.html#Top">
|
|
<link rel="up" href="Hash-Tables.html#Hash-Tables" title="Hash Tables">
|
|
<link rel="prev" href="Hash-Tables.html#Hash-Tables" title="Hash Tables">
|
|
<link rel="next" href="Looking-Up-or-Entering-a-String.html#Looking-Up-or-Entering-a-String" title="Looking Up or Entering a String">
|
|
<link href="http://www.gnu.org/software/texinfo/" rel="generator-home" title="Texinfo Homepage">
|
|
<!--
|
|
This file documents the BFD library.
|
|
|
|
Copyright (C) 1991-2015 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 1.3 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; }
|
|
span.sansserif { font-family:sans-serif; font-weight:normal; }
|
|
--></style>
|
|
</head>
|
|
<body>
|
|
<div class="node">
|
|
<a name="Creating-and-Freeing-a-Hash-Table"></a>
|
|
<p>
|
|
Next: <a rel="next" accesskey="n" href="Looking-Up-or-Entering-a-String.html#Looking-Up-or-Entering-a-String">Looking Up or Entering a String</a>,
|
|
Previous: <a rel="previous" accesskey="p" href="Hash-Tables.html#Hash-Tables">Hash Tables</a>,
|
|
Up: <a rel="up" accesskey="u" href="Hash-Tables.html#Hash-Tables">Hash Tables</a>
|
|
<hr>
|
|
</div>
|
|
|
|
<h4 class="subsection">2.18.1 Creating and freeing a hash table</h4>
|
|
|
|
<p><a name="index-bfd_005fhash_005ftable_005finit-2356"></a><a name="index-bfd_005fhash_005ftable_005finit_005fn-2357"></a>To create a hash table, create an instance of a <code>struct
|
|
bfd_hash_table</code> (defined in <code>bfd.h</code>) and call
|
|
<code>bfd_hash_table_init</code> (if you know approximately how many
|
|
entries you will need, the function <code>bfd_hash_table_init_n</code>,
|
|
which takes a <var>size</var> argument, may be used).
|
|
<code>bfd_hash_table_init</code> returns <code>FALSE</code> if some sort of
|
|
error occurs.
|
|
|
|
<p><a name="index-bfd_005fhash_005fnewfunc-2358"></a>The function <code>bfd_hash_table_init</code> take as an argument a
|
|
function to use to create new entries. For a basic hash
|
|
table, use the function <code>bfd_hash_newfunc</code>. See <a href="Deriving-a-New-Hash-Table-Type.html#Deriving-a-New-Hash-Table-Type">Deriving a New Hash Table Type</a>, for why you would want to use a
|
|
different value for this argument.
|
|
|
|
<p><a name="index-bfd_005fhash_005fallocate-2359"></a><code>bfd_hash_table_init</code> will create an objalloc which will be
|
|
used to allocate new entries. You may allocate memory on this
|
|
objalloc using <code>bfd_hash_allocate</code>.
|
|
|
|
<p><a name="index-bfd_005fhash_005ftable_005ffree-2360"></a>Use <code>bfd_hash_table_free</code> to free up all the memory that has
|
|
been allocated for a hash table. This will not free up the
|
|
<code>struct bfd_hash_table</code> itself, which you must provide.
|
|
|
|
<p><a name="index-bfd_005fhash_005fset_005fdefault_005fsize-2361"></a>Use <code>bfd_hash_set_default_size</code> to set the default size of
|
|
hash table to use.
|
|
|
|
</body></html>
|
|
|