217 

   217   methodHandle h_this(Thread::current(), this);

   218   Thread* myThread    = Thread::current();

   218   // Only GC uses the OopMapCache during thread stack root scanning

   219   methodHandle h_this(myThread, this);

   219   // any other uses generate an oopmap but do not save it in the cache.

   220 #if defined(ASSERT) && !INCLUDE_JVMCI

   220   if (Universe::heap()->is_gc_active()) {

   221   bool has_capability = myThread->is_VM_thread() ||

   221     method_holder()->mask_for(h_this, bci, mask);

   222                         myThread->is_ConcurrentGC_thread() ||

   222   } else {

   223                         myThread->is_GC_task_thread();

   223     OopMapCache::compute_one_oop_map(h_this, bci, mask);

   224 

   224   }

   225   if (!has_capability) {

   226     if (!VerifyStack && !VerifyLastFrame) {

   227       // verify stack calls this outside VM thread

   228       warning("oopmap should only be accessed by the "

   229               "VM, GC task or CMS threads (or during debugging)");

   230       InterpreterOopMap local_mask;

   231       method_holder()->mask_for(h_this, bci, &local_mask);

   232       local_mask.print();

   233     }

   234   }

   235 #endif

   236   method_holder()->mask_for(h_this, bci, mask);