GC-ANALYZE(1)                        GNU                       GC-ANALYZE(1)

NAME         top

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

SYNOPSIS         top

       gc-analyze [OPTION] ... [file]

DESCRIPTION         top

       gc-analyze prints an analysis of a GC memory dump to standard out.

       The memory dumps may be created by calling
       "gnu.gcj.util.GCInfo.enumerate(String namePrefix)" from java code.  A
       memory dump will be created on an out of memory condition if
       "gnu.gcj.util.GCInfo.setOOMDump(String namePrefix)" is called before
       the out of memory occurs.

       Running this program will create two files: TestDump001 and

               import gnu.gcj.util.*;
               import java.util.*;

               public class GCDumpTest
                   static public void main(String args[])
                       ArrayList<String> l = new ArrayList<String>(1000);

                       for (int i = 1; i < 1500; i++) {
                           l.add("This is string #" + i);

       The memory dump may then be displayed by running:

               gc-analyze -v TestDump001

OPTIONS         top

       -v  Verbose output.

       -p tool-prefix
           Prefix added to the names of the nm and readelf commands.

       -d directory
           Directory that contains the executable and shared libraries used
           when the dump was generated.

           Print a help message, then exit.

           Print version information, then exit.

SEE ALSO         top

COPYRIGHT         top

       Copyright (c) 2001-2016 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 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 gfdl(7).

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

            A GNU Manual

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

            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.

COLOPHON         top

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gcc-6.3.0                        2016-12-21                    GC-ANALYZE(1)