--- old/src/hotspot/share/runtime/biasedLocking.cpp	2019-08-27 14:06:31.871557648 +0200
+++ new/src/hotspot/share/runtime/biasedLocking.cpp	2019-08-27 14:06:31.576547429 +0200
@@ -726,6 +726,27 @@
   assert(!obj->mark().has_bias_pattern(), "must not be biased");
 }
 
+void BiasedLocking::revoke_own_locks(Handle obj, TRAPS) {
+  markWord mark = obj->mark();
+
+  if (!mark.has_bias_pattern()) {
+    return;
+  }
+
+  Klass *k = obj->klass();
+  markWord prototype_header = k->prototype_header();
+  assert(mark.biased_locker() == THREAD &&
+         prototype_header.bias_epoch() == mark.bias_epoch(), "Revoke failed, unhandled biased lock state");
+  ResourceMark rm;
+  log_info(biasedlocking)("Revoking bias by walking my own stack:");
+  EventBiasedLockSelfRevocation event;
+  BiasedLocking::walk_stack_and_revoke(obj(), (JavaThread*) THREAD);
+  ((JavaThread*) THREAD)->set_cached_monitor_info(NULL);
+  assert(!obj->mark().has_bias_pattern(), "invariant");
+  if (event.should_commit()) {
+    post_self_revocation_event(&event, k);
+  }
+}
 
 void BiasedLocking::revoke(Handle obj, TRAPS) {
   assert(!SafepointSynchronize::is_at_safepoint(), "must not be called while at safepoint");