src/share/vm/runtime/vm_version.hpp

rev 10271 : 8147844: new method j.l.Runtime.onSpinWait() and the corresponding x86 hotspot instrinsic
Summary: adds c1 & c2 x86 intrinsics for j.l.Runtime.onSpinWait() that utilize the PAUSE instruction
Reviewed-by: iveresov, kvn, vlivanov
Contributed-by: Ivan Krylov <ivan@azul.com>, Yuri Gaevsky <ygaevsky@azul.com>

*** 160,169 ****
--- 160,172 ----
    // command line.
    static unsigned int parallel_worker_threads();
    // Calculates and returns the number of parallel threads.  May
    // be VM version specific.
    static unsigned int calc_parallel_worker_threads();
+ 
+   // Does this CPU support spin wait instruction?
+   static bool supports_on_spin_wait() { return false; }
  };
  
  #ifdef TARGET_ARCH_x86
  # include "vm_version_x86.hpp"
  #endif