third_party/protobuf: Update to HEAD (83d681ee2c)

third_party/protobuf/src/google/protobuf/stubs/atomicops_internals_generic_gcc.h

Index: third_party/protobuf/src/google/protobuf/stubs/atomicops_internals_generic_gcc.h
diff --git a/third_party/protobuf/src/google/protobuf/stubs/atomicops_internals_generic_gcc.h b/third_party/protobuf/src/google/protobuf/stubs/atomicops_internals_generic_gcc.h
index a0116a60ee796b3300bb412ecbe613ab9b307779..0b0b06ce6cf92be8d69b97730595008c19ff84ef 100644
--- a/third_party/protobuf/src/google/protobuf/stubs/atomicops_internals_generic_gcc.h
+++ b/third_party/protobuf/src/google/protobuf/stubs/atomicops_internals_generic_gcc.h
@@ -38,7 +38,7 @@ namespace internal {
 inline Atomic32 NoBarrier_CompareAndSwap(volatile Atomic32* ptr,
                                          Atomic32 old_value,
                                          Atomic32 new_value) {
-  __atomic_compare_exchange_n(ptr, &old_value, new_value, true,
+  __atomic_compare_exchange_n(ptr, &old_value, new_value, false,
                               __ATOMIC_RELAXED, __ATOMIC_RELAXED);
   return old_value;
 }
@@ -61,7 +61,7 @@ inline Atomic32 Barrier_AtomicIncrement(volatile Atomic32* ptr,
 inline Atomic32 Acquire_CompareAndSwap(volatile Atomic32* ptr,
                                        Atomic32 old_value,
                                        Atomic32 new_value) {
-  __atomic_compare_exchange_n(ptr, &old_value, new_value, true,
+  __atomic_compare_exchange_n(ptr, &old_value, new_value, false,
                               __ATOMIC_ACQUIRE, __ATOMIC_ACQUIRE);
   return old_value;
 }
@@ -69,7 +69,7 @@ inline Atomic32 Acquire_CompareAndSwap(volatile Atomic32* ptr,
 inline Atomic32 Release_CompareAndSwap(volatile Atomic32* ptr,
                                        Atomic32 old_value,
                                        Atomic32 new_value) {
-  __atomic_compare_exchange_n(ptr, &old_value, new_value, true,
+  __atomic_compare_exchange_n(ptr, &old_value, new_value, false,
                               __ATOMIC_RELEASE, __ATOMIC_ACQUIRE);
   return old_value;
 }
@@ -78,7 +78,7 @@ inline void NoBarrier_Store(volatile Atomic32* ptr, Atomic32 value) {
   __atomic_store_n(ptr, value, __ATOMIC_RELAXED);
 }
 
-inline void MemoryBarrier() {
+inline void MemoryBarrierInternal() {
   __sync_synchronize();
 }
 
@@ -115,7 +115,7 @@ inline Atomic64 Acquire_Load(volatile const Atomic64* ptr) {
 inline Atomic64 Acquire_CompareAndSwap(volatile Atomic64* ptr,
                                        Atomic64 old_value,
                                        Atomic64 new_value) {
-  __atomic_compare_exchange_n(ptr, &old_value, new_value, true,
+  __atomic_compare_exchange_n(ptr, &old_value, new_value, false,
                               __ATOMIC_ACQUIRE, __ATOMIC_ACQUIRE);
   return old_value;
 }
@@ -123,11 +123,29 @@ inline Atomic64 Acquire_CompareAndSwap(volatile Atomic64* ptr,
 inline Atomic64 NoBarrier_CompareAndSwap(volatile Atomic64* ptr,
                                          Atomic64 old_value,
                                          Atomic64 new_value) {
-  __atomic_compare_exchange_n(ptr, &old_value, new_value, true,
+  __atomic_compare_exchange_n(ptr, &old_value, new_value, false,
                               __ATOMIC_RELAXED, __ATOMIC_RELAXED);
   return old_value;
 }
 
+inline Atomic64 NoBarrier_AtomicIncrement(volatile Atomic64* ptr,
+                                          Atomic64 increment) {
+  return __atomic_add_fetch(ptr, increment, __ATOMIC_RELAXED);
+}
+
+inline void NoBarrier_Store(volatile Atomic64* ptr, Atomic64 value) {
+  __atomic_store_n(ptr, value, __ATOMIC_RELAXED);
+}
+
+inline Atomic64 NoBarrier_AtomicExchange(volatile Atomic64* ptr,
+                                         Atomic64 new_value) {
+  return __atomic_exchange_n(ptr, new_value, __ATOMIC_RELAXED);
+}
+
+inline Atomic64 NoBarrier_Load(volatile const Atomic64* ptr) {
+  return __atomic_load_n(ptr, __ATOMIC_RELAXED);
+}
+
 #endif // defined(__LP64__)
 
 }  // namespace internal