Merge "Fix class unloading with the CC collector."

1 files changed, 5 insertions, 0 deletions

diff --git a/runtime/java_vm_ext.h b/runtime/java_vm_ext.h
index c1fbdc0389..618f6faad5 100644
--- a/runtime/java_vm_ext.h
+++ b/runtime/java_vm_ext.h
@@ -149,6 +149,11 @@ class JavaVMExt : public JavaVM {
       SHARED_REQUIRES(Locks::mutator_lock_)
       REQUIRES(!weak_globals_lock_);
 
+  // Checks if the weak global ref has been cleared by the GC without decode (read barrier.)
+  bool IsWeakGlobalCleared(Thread* self, IndirectRef ref)
+      SHARED_REQUIRES(Locks::mutator_lock_)
+      REQUIRES(!weak_globals_lock_);
+
   Mutex& WeakGlobalsLock() RETURN_CAPABILITY(weak_globals_lock_) {
     return weak_globals_lock_;
   }