JVMTI PopFrame support

Implement support for the JVMTI can_pop_frames capability. This works
by marking shadow-frames with a bit that forces it to be popped or an
instruction to be retried. When a PopFrame is requested the plugin
will deoptimize the targeted thread and force the interpreter to deal
with the frame pop. If the can_pop_frames capability is enabled the
runtime will be forced to handle all exceptions through the
interpreter. This is required to support PopFrame during some
exception events.

Test: ./test.py --host
Test: ./art/tools/run-libjdwp-tests.sh --mode=host
Bug: 73255278
Bug: 111357976
Change-Id: I62d6b1f4ff387c794ba45093c3d6773aaf642067

1 files changed, 5 insertions, 0 deletions

diff --git a/openjdkjvmti/ti_stack.h b/openjdkjvmti/ti_stack.h
index b41fa4bf5a..55c4269086 100644
--- a/openjdkjvmti/ti_stack.h
+++ b/openjdkjvmti/ti_stack.h
@@ -81,6 +81,8 @@ class StackUtil {
                                         jobject** owned_monitors_ptr);
 
   static jvmtiError NotifyFramePop(jvmtiEnv* env, jthread thread, jint depth);
+
+  static jvmtiError PopFrame(jvmtiEnv* env, jthread thread);
 };
 
 struct FindFrameAtDepthVisitor : art::StackVisitor {
@@ -110,6 +112,9 @@ struct FindFrameAtDepthVisitor : art::StackVisitor {
     }
   }
 
+  art::ShadowFrame* GetOrCreateShadowFrame(/*out*/bool* created_frame)
+      REQUIRES_SHARED(art::Locks::mutator_lock_);
+
  private:
   bool found_frame_;
   size_t cnt_;