tree fdc54a52ba79635a228b58fe2ad90c58442965b8
parent 82cc9601d657965d9bff7cc0a63a603df0e1eae5
author Alex Light <allight@google.com> 1557869618 -0700
committer Treehugger Robot <treehugger-gerrit@google.com> 1558060559 +0000

Add AddToDexClassloader JVMTI extension functions

It is useful for some agents to be able to add new classes into an
already existing classloader. This could be used to, for example,
handle new lambdas added during 'edit-and-continue' debugging. This
extension should eliminate the need for agents to reach into
class-loader internals.

These functions are:

'com.android.art.classloader.add_to_dex_class_loader' which has a
signature of jvmtiError(jvmtiEnv* env, jobject classloader, const
char* segment) and will add the given 'segment' file to the
dalvik.system.BaseDexClassLoader 'loader'.

'com.android.art.classloader.add_to_dex_class_loader_in_memory' which
has a signature of jvmtiError(jvmtiEnv* env, jobject classloader,
const unsigned char* dex, jint dex_size) and will add the dexfile
buffer 'dex' to the given dalvik.system.BaseDexClassLoader.

ClassLoaders that do not extend dalvik.system.BaseDexClassLoader are
not supported.

Test: ./test.py --host
Bug: 132699522
Bug: 132914283

Change-Id: I3740af4b3b06b9fa64be8ad94238256b7a43536a