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<html><title>Programming Ruby: The Pragmatic Programmer's Guide</title><head><meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"><STYLE TYPE="text/css"><!--
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</STYLE><table bgcolor="#a03030" cellpadding="3" border="0" cellspacing="0"><tr><td colspan="3"><table bgcolor="#902020" cellpadding="20"><tr><td><h1 class="header">Programming Ruby</h1><h3 class="subheader">The Pragmatic Programmer's Guide</h3></td></tr></table></td></tr><tr><td width="33%" align="left"><a class="subheader" href="ref_m_filetest.html">Previous <</a></td><td width="33%" align="center" valign="middle"><a class="subheader" href="builtins.html">Contents ^</a><br></td><td width="33%" align="right"><a class="subheader" href="ref_m_kernel.html">Next ></a><br></td></tr></table></head><body bgcolor="white">
<!--
Copyright (c) 2001 by Addison Wesley Longman. This
material may be distributed only subject to the terms and
conditions set forth in the Open Publication License, v1.0 or
later (the latest version is presently available at
http://www.opencontent.org/openpub/).
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<table><tr><td height="20"><img src="dot.gif" width="1" height="20"></td></tr></table><table border="0" width="100%" bgcolor="660066" cellpadding="10"><tr><td valign="center"><font color="white" size="7">module GC</font></td></tr></table><p></p><H3>Index:</H3><a href="#disable">disable</a> <a href="#enable">enable</a> <a href="#start">start</a> <a href="#garbage_collect"><i>garbage_collect</i></a> <p></p><hr>
<P></P>
The <code>GC</code> module provides an interface to Ruby's mark and sweep garbage
collection mechanism.
Some of the underlying methods are also
available via the <code>ObjectSpace</code> module, described
beginning on page 434.
<P></P>
<table border="0" width="100%" cellpadding="10"><tr><td valign="center" colspan="2" bgcolor="990066"><font color="white" size="6">class methods
</font></td></tr><tr><td valign="center" bgcolor="#ff9999"><font size="4"><a name="disable"><b>disable</b></a></font></td><td bgcolor="#ffaaaa">
GC.disable -> <code>true</code> or <code>false</code>
</td></tr><td></td><td>
<P></P>
Disables garbage collection, returning <code>true</code> if garbage
collection was already disabled.
<P></P>
<table bgcolor="#fff0f0" cellspacing="0" border="0" cellpadding="3" width="500">
<tr>
<td valign="top"><code>GC.disable</code></td>
<td valign="top"></td>
<td valign="top"><code>false</code></td>
</tr>
<tr>
<td valign="top"><code>GC.disable</code></td>
<td valign="top"></td>
<td valign="top"><code>true</code></td>
</tr>
</table>
<P></P>
<P></P>
</td><tr><td valign="center" bgcolor="#ff9999"><font size="4"><a name="enable"><b>enable</b></a></font></td><td bgcolor="#ffaaaa">
GC.enable -> <code>true</code> or <code>false</code>
</td></tr><td></td><td>
<P></P>
Enables garbage collection, returning <code>true</code> if garbage
collection was disabled.
<P></P>
<table bgcolor="#fff0f0" cellspacing="0" border="0" cellpadding="3" width="500">
<tr>
<td valign="top"><code>GC.disable</code></td>
<td valign="top"></td>
<td valign="top"><code>false</code></td>
</tr>
<tr>
<td valign="top"><code>GC.enable</code></td>
<td valign="top"></td>
<td valign="top"><code>true</code></td>
</tr>
<tr>
<td valign="top"><code>GC.enable</code></td>
<td valign="top"></td>
<td valign="top"><code>false</code></td>
</tr>
</table>
<P></P>
<P></P>
</td><tr><td valign="center" bgcolor="#ff9999"><font size="4"><a name="start"><b>start</b></a></font></td><td bgcolor="#ffaaaa">
GC.start -> <code>nil</code>
</td></tr><td></td><td>
<P></P>
Initiates garbage collection, unless manually disabled.
<P></P>
<table bgcolor="#fff0f0" cellspacing="0" border="0" cellpadding="3" width="500">
<tr>
<td valign="top"><code>GC.start</code></td>
<td valign="top"></td>
<td valign="top"><code>nil</code></td>
</tr>
</table>
<P></P>
<P></P>
</td></table>
<P></P>
<table border="0" width="100%" cellpadding="10"><tr><td valign="center" colspan="2" bgcolor="990066"><font color="white" size="6">instance methods
</font></td></tr><tr><td valign="center" bgcolor="#ff9999"><font size="4"><a name="garbage_collect"><b>garbage_collect</b></a></font></td><td bgcolor="#ffaaaa">
garbage_collect -> <code>nil</code>
</td></tr><td></td><td>
<P></P>
Equivalent to <a href="ref_m_gc.html#start"><code>GC::start</code></a>.
<P></P>
<table bgcolor="#fff0f0" cellspacing="0" border="0" cellpadding="3" width="500">
<tr>
<td colspan="3" valign="top"><code>include GC</code></td>
</tr>
<tr>
<td valign="top"><code>garbage_collect</code></td>
<td valign="top"></td>
<td valign="top"><code>nil</code></td>
</tr>
</table>
<P></P>
<P></P>
</td></table>
<P></P>
<p></p><hr><table bgcolor="#a03030" cellpadding="10" border="0" cellspacing="0"><tr><td width="33%" align="left"><a class="subheader" href="ref_m_filetest.html">Previous <</a></td><td width="33%" align="center" valign="middle"><a class="subheader" href="builtins.html">Contents ^</a><br></td><td width="33%" align="right"><a class="subheader" href="ref_m_kernel.html">Next ></a><br></td></tr></table><p></p><font size="-1">Extracted from the book "Programming Ruby -
The Pragmatic Programmer's Guide"</font><br><font size="-3">
Copyright
©
2000 Addison Wesley Longman, Inc. Released under the terms of the
<a href="http://www.opencontent.org/openpub/">Open Publication License</a> V1.0.
<br>
This reference is available for
<a href="http://www.pragmaticprogrammer.com/ruby/downloads/book.html">download</a>.
</font></body></html>
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