Package com.sun.enterprise.config.serverbeans

Interface JvmOptionBag

All Superinterfaces:
org.jvnet.hk2.config.ConfigBeanProxy
All Known Subinterfaces:
JavaConfig, Profiler
public interface JvmOptionBag extends org.jvnet.hk2.config.ConfigBeanProxy
Factored out the list of jvm-options from at least two other interfaces that have them: java-config and profiler.

Similar to PropertyBag.

  • Method Details

    • getJvmOptions

      List<String> getJvmOptions()

    • setJvmOptions

      void setJvmOptions(List<String> options) throws PropertyVetoException
      Throws:
      PropertyVetoException

    • getXmxMegs

      default int getXmxMegs()
      It's observed that many a time we need the value of max heap size. This is useful when deciding if a user is misconfiguring the JVM by specifying -Xmx that is smaller than -Xms. Sun's JVM for example, bails out with Incompatible minimum and maximum heap sizes specified when that happens. It's generally better to do some basic validations in those cases and that's when this method may be useful.

      Note: It does not take defaults into account. Also, I have tested that server does not start with a heap that is less than 1m, so I think I don't have to worry about -Xmx that is specified to be less than 1 MB. Again, there is lots and lots of platform dependent code here, so this check should be minimal. Again, I am doing this kind of check here because while testing, I was able to get into a situation where -Xmx is configured smaller than -Xms and the server won't start. The user then must edit the domain.xml by hand!

      Returns:
      an integer specifying the actual max heap memory (-Xmx) configured. If it's specified as -Xmx2g, then 2*1024 i.e. 2048 is returned. Returns -1 if no -Xmx is specified.

    • getXmsMegs

      default int getXmsMegs()
      See #getXmxMegs.
      Returns:
      integer specifying -Xms in megabytes, or -1

    • contains

      default boolean contains(String option)

    • getStartingWith

      default String getStartingWith(String start)

    • toMeg

      static int toMeg(String whole, String which)