Add more standard structural redefinition entrypoints

Add structural redefinition extension function and event that mirror
the 'RedefineClasses' function and 'ClassFileLoadHook' event. The new
extension function is called
'com.android.art.class.structurally_redefine_classes' and the new
extension event is called
'com.android.art.class.structural_dex_file_load_hook'.

These extensions are the preferred way to use structural redefinition.
Like the standard 'RedefineClasses' multiple classes may be redefined
at a time.

The structural_dex_file_load_hook is triggered prior to the
can_retransform_classes ClassFileLoadHook. It is triggered on all
classes, even ones that cannot be structurally changed by
class-loading, class redefinition or by calling the RetransformClasses
function.

Calling 'structurally_redefine_classes' with new definitions that do
not require structural changes will fall back to non-structural
redefinition.

Test: ./test.py --host
Bug: 134162467
Change-Id: If4810930470c5c6509cf6db779910006e114b39f

1 files changed, 2 insertions, 0 deletions

diff --git a/openjdkjvmti/transform.h b/openjdkjvmti/transform.h
index 40c7267ad1..a58b50ea10 100644
--- a/openjdkjvmti/transform.h
+++ b/openjdkjvmti/transform.h
@@ -39,6 +39,7 @@
 
 #include "art_jvmti.h"
 #include "ti_class_definition.h"
+#include "ti_redefine.h"
 
 namespace openjdkjvmti {
 
@@ -56,6 +57,7 @@ class Transformer {
       art::Thread* self,
       /*in-out*/ArtClassDefinition* def);
 
+  template<RedefinitionType kType>
   static void RetransformClassesDirect(
       art::Thread* self,
       /*in-out*/std::vector<ArtClassDefinition>* definitions);