src/hotspot/cpu/aarch64/spin_wait_aarch64.hpp

*** 17,11 ***
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   *
   * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
   * or visit www.oracle.com if you need additional information or have any
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-  *
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  #ifndef CPU_AARCH64_SPIN_WAIT_AARCH64_HPP
  #define CPU_AARCH64_SPIN_WAIT_AARCH64_HPP
  
--- 17,10 ---

*** 29,20 ***
  public:
    enum Inst {
      NONE = -1,
      NOP,
      ISB,
!     YIELD
    };
  
  private:
    Inst _inst;
    int _count;
  
  public:
!   SpinWait(Inst inst = NONE, int count = 0) : _inst(inst), _count(count) {}
  
    Inst inst() const { return _inst; }
    int inst_count() const { return _count; }
  };
  
  #endif // CPU_AARCH64_SPIN_WAIT_AARCH64_HPP
--- 28,26 ---
  public:
    enum Inst {
      NONE = -1,
      NOP,
      ISB,
!     YIELD,
+     SB
    };
  
  private:
    Inst _inst;
    int _count;
  
+   Inst from_name(const char *name);
+ 
  public:
!   SpinWait(Inst inst = NONE, int count = 0) : _inst(inst), _count(inst == NONE ? 0 : count) {}
+   SpinWait(const char *name, int count) : SpinWait(from_name(name), count) {}
  
    Inst inst() const { return _inst; }
    int inst_count() const { return _count; }
+ 
+   static bool supports(const char *name);
  };
  
  #endif // CPU_AARCH64_SPIN_WAIT_AARCH64_HPP