(gcj-4.4.info)Invoking gc-analyze

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8 Invoking gc-analyze
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`gc-analyze' [`OPTION'] ... [FILE]

   `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
`TestDump001.bytes'.

     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);
             }
             GCInfo.enumerate("TestDump");
         }
     }

   The memory dump may then be displayed by running:

     gc-analyze -v TestDump001

`--verbose'
`-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.

`--help'
     Print a help message, then exit.

`--version'
     Print version information, then exit.