76 return result;
77 }
78
79 template<>
80 template<typename T>
81 inline T Atomic::PlatformXchg<8>::operator()(T volatile* dest,
82 T exchange_value,
83 atomic_memory_order order) const {
84 STATIC_ASSERT(8 == sizeof(T));
85 T result = __sync_lock_test_and_set (dest, exchange_value);
86 __sync_synchronize();
87 return result;
88 }
89
90 // No direct support for cmpxchg of bytes; emulate using int.
91 template<>
92 struct Atomic::PlatformCmpxchg<1> : Atomic::CmpxchgByteUsingInt {};
93
94 template<>
95 template<typename T>
96 inline T Atomic::PlatformCmpxchg<4>::operator()(T exchange_value,
97 T volatile* dest,
98 T compare_value,
99 atomic_memory_order order) const {
100 STATIC_ASSERT(4 == sizeof(T));
101 return __sync_val_compare_and_swap(dest, compare_value, exchange_value);
102 }
103
104 template<>
105 template<typename T>
106 inline T Atomic::PlatformCmpxchg<8>::operator()(T exchange_value,
107 T volatile* dest,
108 T compare_value,
109 atomic_memory_order order) const {
110 STATIC_ASSERT(8 == sizeof(T));
111 return __sync_val_compare_and_swap(dest, compare_value, exchange_value);
112 }
113
114 template<>
115 template<typename T>
116 inline T Atomic::PlatformLoad<8>::operator()(T const volatile* src) const {
117 STATIC_ASSERT(8 == sizeof(T));
118 volatile int64_t dest;
119 os::atomic_copy64(reinterpret_cast<const volatile int64_t*>(src), reinterpret_cast<volatile int64_t*>(&dest));
120 return PrimitiveConversions::cast<T>(dest);
121 }
122
123 template<>
124 template<typename T>
125 inline void Atomic::PlatformStore<8>::operator()(T volatile* dest,
126 T store_value) const {
127 STATIC_ASSERT(8 == sizeof(T));
128 os::atomic_copy64(reinterpret_cast<const volatile int64_t*>(&store_value), reinterpret_cast<volatile int64_t*>(dest));
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76 return result;
77 }
78
79 template<>
80 template<typename T>
81 inline T Atomic::PlatformXchg<8>::operator()(T volatile* dest,
82 T exchange_value,
83 atomic_memory_order order) const {
84 STATIC_ASSERT(8 == sizeof(T));
85 T result = __sync_lock_test_and_set (dest, exchange_value);
86 __sync_synchronize();
87 return result;
88 }
89
90 // No direct support for cmpxchg of bytes; emulate using int.
91 template<>
92 struct Atomic::PlatformCmpxchg<1> : Atomic::CmpxchgByteUsingInt {};
93
94 template<>
95 template<typename T>
96 inline T Atomic::PlatformCmpxchg<4>::operator()(T volatile* dest,
97 T compare_value,
98 T exchange_value,
99 atomic_memory_order order) const {
100 STATIC_ASSERT(4 == sizeof(T));
101 return __sync_val_compare_and_swap(dest, compare_value, exchange_value);
102 }
103
104 template<>
105 template<typename T>
106 inline T Atomic::PlatformCmpxchg<8>::operator()(T volatile* dest,
107 T compare_value,
108 T exchange_value,
109 atomic_memory_order order) const {
110 STATIC_ASSERT(8 == sizeof(T));
111 return __sync_val_compare_and_swap(dest, compare_value, exchange_value);
112 }
113
114 template<>
115 template<typename T>
116 inline T Atomic::PlatformLoad<8>::operator()(T const volatile* src) const {
117 STATIC_ASSERT(8 == sizeof(T));
118 volatile int64_t dest;
119 os::atomic_copy64(reinterpret_cast<const volatile int64_t*>(src), reinterpret_cast<volatile int64_t*>(&dest));
120 return PrimitiveConversions::cast<T>(dest);
121 }
122
123 template<>
124 template<typename T>
125 inline void Atomic::PlatformStore<8>::operator()(T volatile* dest,
126 T store_value) const {
127 STATIC_ASSERT(8 == sizeof(T));
128 os::atomic_copy64(reinterpret_cast<const volatile int64_t*>(&store_value), reinterpret_cast<volatile int64_t*>(dest));
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