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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>Writing GLib Applications: GLib Reference Manual</title> <meta name="generator" content="DocBook XSL Stylesheets V1.79.1"> <link rel="home" href="index.html" title="GLib Reference Manual"> <link rel="up" href="glib.html" title="GLib Overview"> <link rel="prev" href="glib-cross-compiling.html" title="Cross-compiling the GLib package"> <link rel="next" href="glib-compiling.html" title="Compiling GLib Applications"> <meta name="generator" content="GTK-Doc V1.32 (XML mode)"> <link rel="stylesheet" href="style.css" type="text/css"> </head> <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"> <table class="navigation" id="top" width="100%" summary="Navigation header" cellpadding="2" cellspacing="5"><tr valign="middle"> <td width="100%" align="left" class="shortcuts"></td> <td><a accesskey="h" href="index.html"><img src="home.png" width="16" height="16" border="0" alt="Home"></a></td> <td><a accesskey="u" href="glib.html"><img src="up.png" width="16" height="16" border="0" alt="Up"></a></td> <td><a accesskey="p" href="glib-cross-compiling.html"><img src="left.png" width="16" height="16" border="0" alt="Prev"></a></td> <td><a accesskey="n" href="glib-compiling.html"><img src="right.png" width="16" height="16" border="0" alt="Next"></a></td> </tr></table> <div class="refentry"> <a name="glib-programming"></a><div class="titlepage"></div> <div class="refnamediv"><table width="100%"><tr> <td valign="top"> <h2><span class="refentrytitle">Writing GLib Applications</span></h2> <p>Writing GLib Applications — General considerations when programming with GLib </p> </td> <td class="gallery_image" valign="top" align="right"></td> </tr></table></div> <div class="refsect1"> <a name="id-1.2.5.3"></a><h2>Writing GLib Applications</h2> <div class="refsect2"> <a name="id-1.2.5.3.2"></a><h3>Threads</h3> <p> The general policy of GLib is that all functions are invisibly threadsafe with the exception of data structure manipulation functions, where, if you have two threads manipulating the <span class="emphasis"><em>same</em></span> data structure, they must use a lock to synchronize their operation. </p> <p> GLib creates a worker thread for its own purposes so GLib applications will always have at least 2 threads. </p> <p> See the sections on <a class="link" href="glib-Threads.html" title="Threads">threads</a> and <a class="link" href="glib-Thread-Pools.html" title="Thread Pools">threadpools</a> for GLib APIs that support multithreaded applications. </p> </div> <hr> <div class="refsect2"> <a name="id-1.2.5.3.3"></a><h3>Security</h3> <p> When writing code that runs with elevated privileges, it is important to follow some basic rules of secure programming. David Wheeler has an excellent book on this topic, <a class="ulink" href="http://www.dwheeler.com/secure-programs/Secure-Programs-HOWTO/index.html" target="_top">Secure Programming for Linux and Unix HOWTO</a>. </p> <p> When it comes to GLib and its associated libraries, GLib and GObject are generally fine to use in code that runs with elevated privileges; they don't load modules (executable code in shared objects) or run other programs 'behind your back'. GIO has to be used carefully in privileged programs, see the <a class="ulink" href="http://developer.gnome.org/gio/stable/ch02.html" target="_top">GIO documentation</a> for details. </p> </div> </div> </div> <div class="footer"> <hr>Generated by GTK-Doc V1.32</div> </body> </html>