/**
* This method must be provided by the vm vendor, as it is used by other provided class
* implementations. For example, java.io.ObjectInputStream.readObject() and
* java.io.ObjectInputStream.resolveProxyClass(). It is also useful for other classes, such as
* java.rmi.server.RMIClassLoader. Walk the stack and answer the most recent non-null and
* non-bootstrap ClassLoader on the stack of the calling thread. If no such ClassLoader is found,
* null is returned. Notes: 1) This method operates on the defining classes of methods on stack.
* NOT the classes of receivers.
*
* @return the first non-bootstrap ClassLoader on the stack
*/
public static final ClassLoader getNonBootstrapClassLoader() {
StackBrowser browser = new StackBrowser();
browser.init();
while (browser.hasMoreFrames()) {
ClassLoader cl = browser.getClassLoader();
if (cl != BootstrapClassLoader.getBootstrapClassLoader() && cl != null) {
return cl;
}
browser.up();
}
return null;
}
// TODO: Harmony
static Class<?>[] getStackClasses(int maxDepth, boolean stopAtPrivileged) {
StackBrowser browser = new StackBrowser();
if (maxDepth == -1) {
browser.init();
maxDepth = 0;
while (browser.hasMoreFrames()) {
maxDepth++;
browser.up();
}
}
if (maxDepth == 0) return new Class[0];
else if (maxDepth < 0) {
throw new Error("Unexpected negative call stack size" + maxDepth);
}
Class<?>[] result = new Class[maxDepth];
browser.init();
for (int i = 0; i < maxDepth; i++) {
result[i] = browser.getCurrentClass().getClassForType();
browser.up();
}
return result;
}