| <html lang="en"> |
| <head> |
| <title>Unregistering Code - Debugging with GDB</title> |
| <meta http-equiv="Content-Type" content="text/html"> |
| <meta name="description" content="Debugging with GDB"> |
| <meta name="generator" content="makeinfo 4.13"> |
| <link title="Top" rel="start" href="index.html#Top"> |
| <link rel="up" href="JIT-Interface.html#JIT-Interface" title="JIT Interface"> |
| <link rel="prev" href="Registering-Code.html#Registering-Code" title="Registering Code"> |
| <link href="http://www.gnu.org/software/texinfo/" rel="generator-home" title="Texinfo Homepage"> |
| <!-- |
| Copyright (C) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, |
| 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 |
| 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 ``Free Software'' and ``Free Software Needs |
| Free Documentation'', with the Front-Cover Texts being ``A GNU Manual,'' |
| and with the Back-Cover Texts as in (a) below. |
| |
| (a) The FSF's Back-Cover Text is: ``You are free to copy and modify |
| this GNU Manual. Buying copies from GNU Press supports the FSF in |
| developing GNU and promoting software freedom.''--> |
| <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> |
| <link rel="stylesheet" type="text/css" href="../cs.css"> |
| </head> |
| <body> |
| <div class="node"> |
| <a name="Unregistering-Code"></a> |
| <p> |
| Previous: <a rel="previous" accesskey="p" href="Registering-Code.html#Registering-Code">Registering Code</a>, |
| Up: <a rel="up" accesskey="u" href="JIT-Interface.html#JIT-Interface">JIT Interface</a> |
| <hr> |
| </div> |
| |
| <h3 class="section">29.3 Unregistering Code</h3> |
| |
| <p>If code is freed, then the JIT should use the following protocol: |
| |
| <ul> |
| <li>Remove the code entry corresponding to the code from the linked list. |
| |
| <li>Point the <code>relevant_entry</code> field of the descriptor at the code entry. |
| |
| <li>Set <code>action_flag</code> to <code>JIT_UNREGISTER</code> and call |
| <code>__jit_debug_register_code</code>. |
| </ul> |
| |
| <p>If the JIT frees or recompiles code without unregistering it, then <span class="sc">gdb</span> |
| and the JIT will leak the memory used for the associated symbol files. |
| |
| </body></html> |
| |
