src/share/vm/utilities/accessFlags.hpp

rev 6875 : 8056240: Investigate increased GC remark time after class unloading changes in CRM Fuse
Reviewed-by: mgerdin, coleenp, bdelsart

*** 168,177 ****
--- 168,178 ----
    void set_queued_for_compilation()    { atomic_set_bits(JVM_ACC_QUEUED); }
    void clear_queued_for_compilation()  { atomic_clear_bits(JVM_ACC_QUEUED); }
  
    // Atomic update of flags
    void atomic_set_bits(jint bits);
+   bool atomic_set_one_bit(jint bit);
    void atomic_clear_bits(jint bits);
  
   private:
    friend class Method;
    friend class Klass;
*** 228,243 ****
    void set_field_has_generic_signature()
                                         {
                                           atomic_set_bits(JVM_ACC_FIELD_HAS_GENERIC_SIGNATURE);
                                         }
  
!   void set_on_stack(const bool value)
                                         {
                                           if (value) {
!                                            atomic_set_bits(JVM_ACC_ON_STACK);
                                           } else {
                                             atomic_clear_bits(JVM_ACC_ON_STACK);
                                           }
                                         }
    // Conversion
    jshort as_short() const              { return (jshort)_flags; }
    jint   as_int() const                { return _flags; }
--- 229,245 ----
    void set_field_has_generic_signature()
                                         {
                                           atomic_set_bits(JVM_ACC_FIELD_HAS_GENERIC_SIGNATURE);
                                         }
  
!   bool set_on_stack(const bool value)
                                         {
                                           if (value) {
!                                            return atomic_set_one_bit(JVM_ACC_ON_STACK);
                                           } else {
                                             atomic_clear_bits(JVM_ACC_ON_STACK);
+                                            return true; // Ignored
                                           }
                                         }
    // Conversion
    jshort as_short() const              { return (jshort)_flags; }
    jint   as_int() const                { return _flags; }