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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.