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

Nested Class Summary

static class

JvmOptionBag.Duck

Method Summary

boolean	contains(String option)
List<String>	getJvmOptions()
String	getStartingWith(String start)
int	getXmsMegs() see #getXmxMegs
int	getXmxMegs() It's observed that many a time we need the value of max heap size.
void	setJvmOptions(List<String> options)

Methods inherited from interface org.jvnet.hk2.config.ConfigBeanProxy

createChild, deepCopy, getParent, getParent

Method Detail

getJvmOptions

List<String> getJvmOptions()

setJvmOptions

void setJvmOptions(List<String> options)
                   throws PropertyVetoException

Throws:

PropertyVetoException

getXmxMegs

@DuckTyped
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.

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

@DuckTyped
int getXmsMegs()

see #getXmxMegs

Returns:

integer specifying -Xms in megabytes, or -1

contains

@DuckTyped
boolean contains(String option)

getStartingWith

@DuckTyped
String getStartingWith(String start)