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| author | Daniel Jacobowitz <drow@false.org> | 2006-02-06 22:14:31 +0000 |
|---|---|---|
| committer | Daniel Jacobowitz <drow@false.org> | 2006-02-06 22:14:31 +0000 |
| commit | c91d38aa7043aaf262d88fed5eeaaeee990db8c0 (patch) | |
| tree | fe0a718581307d14f72aa687fec78b2ee015668d /gdb/doc/gdbint.texinfo | |
| parent | 75eb734c5cf4c99438b48359bef717055af77e8c (diff) | |
| download | gdb-c91d38aa7043aaf262d88fed5eeaaeee990db8c0.zip gdb-c91d38aa7043aaf262d88fed5eeaaeee990db8c0.tar.gz gdb-c91d38aa7043aaf262d88fed5eeaaeee990db8c0.tar.bz2 | |
* gdbint.texinfo (Symbol Handling): Add a section
on memory management.
Diffstat (limited to 'gdb/doc/gdbint.texinfo')
| -rw-r--r-- | gdb/doc/gdbint.texinfo | 20 |
1 files changed, 18 insertions, 2 deletions
diff --git a/gdb/doc/gdbint.texinfo b/gdb/doc/gdbint.texinfo index b86b083..737d225 100644 --- a/gdb/doc/gdbint.texinfo +++ b/gdb/doc/gdbint.texinfo @@ -9,7 +9,7 @@ @ifinfo This file documents the internals of the GNU debugger @value{GDBN}. Copyright (C) 1990, 1991, 1992, 1993, 1994, 1996, 1998, 1999, 2000, 2001, - 2002, 2003, 2004, 2005 + 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc. Contributed by Cygnus Solutions. Written by John Gilmore. Second Edition by Stan Shebs. @@ -49,7 +49,7 @@ Free Documentation License''. @vskip 0pt plus 1filll Copyright @copyright{} 1990,1991,1992,1993,1994,1996,1998,1999,2000,2001, - 2002, 2003, 2004, 2005 Free Software Foundation, Inc. + 2002, 2003, 2004, 2005, 2006 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 @@ -1985,6 +1985,22 @@ will only ever be implemented by one object file format may be called directly. This interface should be described in a file @file{bfd/lib@var{xyz}.h}, which is included by @value{GDBN}. +@section Memory Management for Symbol Files + +Most memory associated with a loaded symbol file is stored on +its @code{objfile_obstack}. This includes symbols, types, +namespace data, and other information produced by the symbol readers. + +Because this data lives on the objfile's obstack, it is automatically +released when the objfile is unloaded or reloaded. Therefore one +objfile must not reference symbol or type data from another objfile; +they could be unloaded at different times. + +User convenience variables, et cetera, have associated types. Normally +these types live in the associated objfile. However, when the objfile +is unloaded, those types are deep copied to global memory, so that +the values of the user variables and history items are not lost. + @node Language Support |