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.\" ========================================================================

.\"

.IX Title "GC-ANALYZE 1"

.TH GC-ANALYZE 1 "2010-07-31" "gcc-4.5.1" "GNU"

.\" For nroff, turn off justification.  Always turn off hyphenation; it makes

.\" way too many mistakes in technical documents.

.if n .ad l

.nh

.SH "NAME"

gc\-analyze \- Analyze Garbage Collector (GC) memory dumps

.SH "SYNOPSIS"

.IX Header "SYNOPSIS"

\&\fBgc-analyze\fR [\fB\s-1OPTION\s0\fR] ... [\fIfile\fR]

.SH "DESCRIPTION"

.IX Header "DESCRIPTION"

\&\fBgc-analyze\fR prints an analysis of a \s-1GC\s0 memory dump to

standard out.

.PP

The memory dumps may be created by calling

\&\f(CW\*(C`gnu.gcj.util.GCInfo.enumerate(String namePrefix)\*(C'\fR from java

code.  A memory dump will be created on an out of memory condition if

\&\f(CW\*(C`gnu.gcj.util.GCInfo.setOOMDump(String namePrefix)\*(C'\fR is called

before the out of memory occurs.

.PP

Running this program will create two files: \fITestDump001\fR and

\&\fITestDump001.bytes\fR.

.PP

.Vb 2

\&        import gnu.gcj.util.*;

\&        import java.util.*;

\&

\&        public class GCDumpTest

\&        {

\&            static public void main(String args[])

\&            {

\&                ArrayList l = new ArrayList(1000);

\&

\&                for (int i = 1; i < 1500; i++) {

\&                    l.add("This is string #" + i);

\&                }

\&                GCInfo.enumerate("TestDump");

\&            }

\&        }

.Ve

.PP

The memory dump may then be displayed by running:

.PP

.Vb 1

\&        gc\-analyze \-v TestDump001

.Ve

.SH "OPTIONS"

.IX Header "OPTIONS"

.IP "\fB\-\-verbose\fR" 4

.IX Item "--verbose"

.PD 0

.IP "\fB\-v\fR" 4

.IX Item "-v"

.PD

Verbose output.

.IP "\fB\-p\fR \fItool-prefix\fR" 4

.IX Item "-p tool-prefix"

Prefix added to the names of the \fBnm\fR and \fBreadelf\fR commands.

.IP "\fB\-d\fR \fIdirectory\fR" 4

.IX Item "-d directory"

Directory that contains the executable and shared libraries used when

the dump was generated.

.IP "\fB\-\-help\fR" 4

.IX Item "--help"

Print a help message, then exit.

.IP "\fB\-\-version\fR" 4

.IX Item "--version"

Print version information, then exit.

.SH "SEE ALSO"

.IX Header "SEE ALSO"

.SH "COPYRIGHT"

.IX Header "COPYRIGHT"

Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc.

.PP

Permission is granted to copy, distribute and/or modify this document

under the terms of the \s-1GNU\s0 Free Documentation License, Version 1.2 or

any later version published by the Free Software Foundation; with no

Invariant Sections, 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

man page \fIgfdl\fR\|(7).

.PP

(a) The \s-1FSF\s0's Front-Cover Text is:

.PP

.Vb 1

\&     A GNU Manual

.Ve

.PP

(b) The \s-1FSF\s0's Back-Cover Text is:

.PP

.Vb 3

\&     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.

.Ve