src/os_cpu/solaris_sparc/vm/atomic_solaris_sparc.hpp

rev 13452 : imported patch Atomic_cmpxchg
rev 13453 : imported patch Atomic_add
rev 13454 : [mq]: Atomic_add_v2

*** 60,85 ****
  // omits the instruction set check.
  
  extern "C" jint     _Atomic_swap32(jint     exchange_value, volatile jint*     dest);
  extern "C" intptr_t _Atomic_swap64(intptr_t exchange_value, volatile intptr_t* dest);
  
! extern "C" jint     _Atomic_add32(jint     inc,       volatile jint*     dest);
! extern "C" intptr_t _Atomic_add64(intptr_t add_value, volatile intptr_t* dest);
! 
! 
! inline jint     Atomic::add     (jint    add_value, volatile jint*     dest) {
!   return _Atomic_add32(add_value, dest);
! }
! 
! inline intptr_t Atomic::add_ptr(intptr_t add_value, volatile intptr_t* dest) {
!   return _Atomic_add64(add_value, dest);
! }
! 
! inline void*    Atomic::add_ptr(intptr_t add_value, volatile void*     dest) {
!   return (void*)add_ptr((intptr_t)add_value, (volatile intptr_t*)dest);
! }
  
  
  inline jint     Atomic::xchg    (jint     exchange_value, volatile jint*     dest) {
    return _Atomic_swap32(exchange_value, dest);
  }
  
--- 60,87 ----
  // omits the instruction set check.
  
  extern "C" jint     _Atomic_swap32(jint     exchange_value, volatile jint*     dest);
  extern "C" intptr_t _Atomic_swap64(intptr_t exchange_value, volatile intptr_t* dest);
  
! // Implement ADD using a CAS loop.
! template<size_t byte_size>
! struct Atomic::PlatformAdd VALUE_OBJ_CLASS_SPEC {
!   template<typename I, typename D>
!   inline D operator()(I add_value, D volatile* dest) const {
!     D old_value = *dest;
!     while (true) {
!       D new_value = old_value + add_value;
!       D result = cmpxchg(new_value, dest, old_value);
!       if (result == old_value) break;
!       old_value = result;
!     }
!     return old_value + add_value;
!   }
! };
  
+ template<>
+ struct Atomic::PlatformAdd<2>: Atomic::AddShortUsingInt {};
  
  inline jint     Atomic::xchg    (jint     exchange_value, volatile jint*     dest) {
    return _Atomic_swap32(exchange_value, dest);
  }