public synchronized boolean removeTransformer(ClassFileTransformer transformer) {
if (transformer == null) {
throw new NullPointerException("null passed as 'transformer' in removeTransformer");
}
TransformerManager mgr = findTransformerManager(transformer);
if (mgr != null) {
mgr.removeTransformer(transformer);
if (mgr.isRetransformable() && mgr.getTransformerCount() == 0) {
setHasRetransformableTransformers(mNativeAgent, false);
}
return true;
}
return false;
}
public synchronized void addTransformer(
ClassFileTransformer transformer, boolean canRetransform) {
if (transformer == null) {
throw new NullPointerException("null passed as 'transformer' in addTransformer");
}
if (canRetransform) {
if (!isRetransformClassesSupported()) {
throw new UnsupportedOperationException(
"adding retransformable transformers is not supported in this environment");
}
if (mRetransfomableTransformerManager == null) {
mRetransfomableTransformerManager = new TransformerManager(true);
}
mRetransfomableTransformerManager.addTransformer(transformer);
if (mRetransfomableTransformerManager.getTransformerCount() == 1) {
setHasRetransformableTransformers(mNativeAgent, true);
}
} else {
mTransformerManager.addTransformer(transformer);
}
}
