src/hotspot/os_cpu/solaris_sparc/atomic_solaris_sparc.hpp

rev 49898 : 8202080: Introduce ordering semantics for Atomic::add and other RMW atomics
Reviewed-by:

*** 29,39 ****
  
  // Implement ADD using a CAS loop.
  template<size_t byte_size>
  struct Atomic::PlatformAdd {
    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;
--- 29,39 ----
  
  // Implement ADD using a CAS loop.
  template<size_t byte_size>
  struct Atomic::PlatformAdd {
    template<typename I, typename D>
!   inline D operator()(I add_value, D volatile* dest, atomic_memory_order order) 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;
*** 44,54 ****
  };
  
  template<>
  template<typename T>
  inline T Atomic::PlatformXchg<4>::operator()(T exchange_value,
!                                              T volatile* dest) const {
    STATIC_ASSERT(4 == sizeof(T));
    __asm__ volatile (  "swap [%2],%0"
                      : "=r" (exchange_value)
                      : "0" (exchange_value), "r" (dest)
                      : "memory");
--- 44,55 ----
  };
  
  template<>
  template<typename T>
  inline T Atomic::PlatformXchg<4>::operator()(T exchange_value,
!                                              T volatile* dest,
!                                              atomic_memory_order order) const {
    STATIC_ASSERT(4 == sizeof(T));
    __asm__ volatile (  "swap [%2],%0"
                      : "=r" (exchange_value)
                      : "0" (exchange_value), "r" (dest)
                      : "memory");
*** 56,66 ****
  }
  
  template<>
  template<typename T>
  inline T Atomic::PlatformXchg<8>::operator()(T exchange_value,
!                                              T volatile* dest) const {
    STATIC_ASSERT(8 == sizeof(T));
    T old_value = *dest;
    while (true) {
      T result = cmpxchg(exchange_value, dest, old_value);
      if (result == old_value) break;
--- 57,68 ----
  }
  
  template<>
  template<typename T>
  inline T Atomic::PlatformXchg<8>::operator()(T exchange_value,
!                                              T volatile* dest,
!                                              atomic_memory_order order) const {
    STATIC_ASSERT(8 == sizeof(T));
    T old_value = *dest;
    while (true) {
      T result = cmpxchg(exchange_value, dest, old_value);
      if (result == old_value) break;
*** 76,86 ****
  template<>
  template<typename T>
  inline T Atomic::PlatformCmpxchg<4>::operator()(T exchange_value,
                                                  T volatile* dest,
                                                  T compare_value,
!                                                 cmpxchg_memory_order order) const {
    STATIC_ASSERT(4 == sizeof(T));
    T rv;
    __asm__ volatile(
      " cas    [%2], %3, %0"
      : "=r" (rv)
--- 78,88 ----
  template<>
  template<typename T>
  inline T Atomic::PlatformCmpxchg<4>::operator()(T exchange_value,
                                                  T volatile* dest,
                                                  T compare_value,
!                                                 atomic_memory_order order) const {
    STATIC_ASSERT(4 == sizeof(T));
    T rv;
    __asm__ volatile(
      " cas    [%2], %3, %0"
      : "=r" (rv)
*** 92,102 ****
  template<>
  template<typename T>
  inline T Atomic::PlatformCmpxchg<8>::operator()(T exchange_value,
                                                  T volatile* dest,
                                                  T compare_value,
!                                                 cmpxchg_memory_order order) const {
    STATIC_ASSERT(8 == sizeof(T));
    T rv;
    __asm__ volatile(
      " casx   [%2], %3, %0"
      : "=r" (rv)
--- 94,104 ----
  template<>
  template<typename T>
  inline T Atomic::PlatformCmpxchg<8>::operator()(T exchange_value,
                                                  T volatile* dest,
                                                  T compare_value,
!                                                 atomic_memory_order order) const {
    STATIC_ASSERT(8 == sizeof(T));
    T rv;
    __asm__ volatile(
      " casx   [%2], %3, %0"
      : "=r" (rv)