// Note: this Javadoc is copied from javax.management.Descriptor
// due to 6369229.
@Override
public synchronized int hashCode() {
final int size = descriptorMap.size();
// descriptorMap is sorted with a comparator that ignores cases.
//
return Util.hashCode(
descriptorMap.keySet().toArray(new String[size]),
descriptorMap.values().toArray(new Object[size]));
}
static String[] getLibraryPath(Object userData) {
final Map<Object, Object> m = Util.cast((userData instanceof Map) ? userData : null);
final String tag = "JvmRuntime.getLibraryPath";
// If the list is in the cache, simply return it.
//
if (m != null) {
final String[] cached = (String[]) m.get(tag);
if (cached != null) return cached;
}
final String[] args = splitPath(getRuntimeMXBean().getLibraryPath());
if (m != null) m.put(tag, args);
return args;
}
static String[] getInputArguments(Object userData) {
final Map<Object, Object> m = Util.cast((userData instanceof Map) ? userData : null);
final String tag = "JvmRuntime.getInputArguments";
// If the list is in the cache, simply return it.
//
if (m != null) {
final String[] cached = (String[]) m.get(tag);
if (cached != null) return cached;
}
final List<String> l = getRuntimeMXBean().getInputArguments();
final String[] args = l.toArray(new String[0]);
if (m != null) m.put(tag, args);
return args;
}
/**
* Returns a {@link ClassLoaderRepository} based on the class loader returned by {@link
* #getDefaultClassLoader()}.
*
* @return a {@link ClassLoaderRepository} that contains a single class loader, returned by {@link
* #getDefaultClassLoader()}.
*/
public ClassLoaderRepository getClassLoaderRepository() {
// We return a new ClassLoaderRepository each time this method is
// called. This is by design, because there's no guarantee that
// getDefaultClassLoader() will always return the same class loader.
return Util.getSingleClassLoaderRepository(getDefaultClassLoader());
}
/**
* This method is called each time an IOException is raised when trying to forward an operation to
* the underlying MBeanServerConnection, as a result of calling {@link
* #getMBeanServerConnection()} or as a result of invoking the operation on the returned
* connection. Since the methods in {@link MBeanServer} are not declared to throw {@code
* IOException}, this method must return a {@code RuntimeException} to be thrown instead.
* Typically, the original {@code IOException} will be in the {@linkplain Throwable#getCause()
* cause chain} of the {@code RuntimeException}.
*
* <p>Subclasses may redefine this method if they need to perform any specific handling of
* IOException (logging etc...).
*
* @param x The raised IOException.
* @param method The name of the method in which the exception was raised. This is one of the
* methods of the MBeanServer interface.
* @return A RuntimeException that should be thrown by the caller. In this default implementation,
* this is a {@link RuntimeException} wrapping <var>x</var>.
*/
protected RuntimeException wrapIOException(IOException x, String method) {
return Util.newRuntimeIOException(x);
}
