gnu.classpath

Class VMStackWalker

java.lang.Object

gnu.classpath.VMStackWalker

public final class VMStackWalker
extends Object

This is a cheap stack browser. Better would be something like the Jikes RVM StackBrowser class.

This is our interface to GNU Classpath. We quote the official Classpath Javadoc here, as part of clearly describing the interface. Never the less, look at the source code of the GNU Class (classpath/vm/reference/gnu/classpath/VMStackWalker.java) for the latest description of what these methods should do. NOTE: we do not quote any JavaDoc that would cause JavaDoc warnings to be emitted in JDK8.

Constructor Summary

Constructors

Constructor and Description
VMStackWalker()

Method Summary

Modifier and Type	Method and Description
static ClassLoader	firstNonNullClassLoader() Walk up the stack and return the first non-null class loader.
static Class<?>	getCallingClass()
static Class<?>	getCallingClass(int skip)
static ClassLoader	getCallingClassLoader()
static Class<?>[]	getClassContext() Classpath's Javadoc for this method says: Get a list of all the classes currently executing methods on the Java stack.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

VMStackWalker

public VMStackWalker()

Method Detail

firstNonNullClassLoader

public static ClassLoader firstNonNullClassLoader()

Walk up the stack and return the first non-null class loader. If there aren't any non-null class loaders on the stack, return null.

Returns:

the first non-null classloader on stack or null

getClassContext

public static Class<?>[] getClassContext()

Classpath's Javadoc for this method says:

Get a list of all the classes currently executing methods on the Java stack. getClassContext()[0] is the class associated with the currently executing method, i.e., the method that called VMStackWalker.getClassContext() (possibly through reflection). So you may need to pop off these stack frames from the top of the stack:

• VMStackWalker.getClassContext()
• Method.invoke()

Returns:

an array of the declaring classes of each stack frame

getCallingClass

public static Class<?> getCallingClass()

getCallingClass

public static Class<?> getCallingClass(int skip)

getCallingClassLoader

public static ClassLoader getCallingClassLoader()