src/hotspot/share/oops/markOop.hpp

rev 54621 : imported patch 8221734-v1

*** 175,184 ****
--- 175,193 ----
    }
    JavaThread* biased_locker() const {
      assert(has_bias_pattern(), "should not call this otherwise");
      return (JavaThread*) ((intptr_t) (mask_bits(value(), ~(biased_lock_mask_in_place | age_mask_in_place | epoch_mask_in_place))));
    }
+   bool biased_locker_is(JavaThread* thread) const {
+     if (!has_bias_pattern()) {
+       return false;
+     }
+     // If current thread is not the owner it can be unbiased at anytime.
+     JavaThread* jt = (JavaThread*) ((intptr_t) (mask_bits(value(), ~(biased_lock_mask_in_place | age_mask_in_place | epoch_mask_in_place))));
+     return jt == thread;
+   }
+ 
    // Indicates that the mark has the bias bit set but that it has not
    // yet been biased toward a particular thread
    bool is_biased_anonymously() const {
      return (has_bias_pattern() && (biased_locker() == NULL));
    }