diff -r 155b084cf384 -r 05ff6e27de45 src/hotspot/share/runtime/sharedRuntime.cpp
--- a/src/hotspot/share/runtime/sharedRuntime.cpp	Mon Aug 12 08:48:47 2019 +0200
+++ b/src/hotspot/share/runtime/sharedRuntime.cpp	Mon Aug 12 10:02:25 2019 +0200
@@ -2849,11 +2849,17 @@
 void AdapterHandlerLibrary::create_native_wrapper(const methodHandle& method) {
   ResourceMark rm;
   nmethod* nm = NULL;
+  address critical_entry = NULL;
 
   assert(method->is_native(), "must be native");
   assert(method->is_method_handle_intrinsic() ||
          method->has_native_function(), "must have something valid to call!");
 
+  if (CriticalJNINatives && !method->is_method_handle_intrinsic()) {
+    // We perform the I/O with transition to native before acquiring AdapterHandlerLibrary_lock.
+    critical_entry = NativeLookup::lookup_critical_entry(method);
+  }
+
   {
     // Perform the work while holding the lock, but perform any printing outside the lock
     MutexLocker mu(AdapterHandlerLibrary_lock);
@@ -2898,7 +2904,7 @@
       int comp_args_on_stack = SharedRuntime::java_calling_convention(sig_bt, regs, total_args_passed, is_outgoing);
 
       // Generate the compiled-to-native wrapper code
-      nm = SharedRuntime::generate_native_wrapper(&_masm, method, compile_id, sig_bt, regs, ret_type);
+      nm = SharedRuntime::generate_native_wrapper(&_masm, method, compile_id, sig_bt, regs, ret_type, critical_entry);
 
       if (nm != NULL) {
         method->set_code(method, nm);