// Copyright 2014 Google Inc. All rights reserved.
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// https://developers.google.com/protocol-buffers/
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following disclaimer
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// in the documentation and/or other materials provided with the
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// distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived from
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// this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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// This file is an internal atomic implementation, use atomicops.h instead.
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#ifndef GOOGLE_PROTOBUF_ATOMICOPS_INTERNALS_SPARC_GCC_H_
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#define GOOGLE_PROTOBUF_ATOMICOPS_INTERNALS_SPARC_GCC_H_
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#include <atomic.h>
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namespace google {
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namespace protobuf {
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namespace internal {
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inline Atomic32 NoBarrier_CompareAndSwap(volatile Atomic32* ptr,
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Atomic32 old_value,
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Atomic32 new_value) {
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return (Atomic32)atomic_cas_32((volatile uint32_t*)ptr, (uint32_t)old_value, (uint32_t)new_value);
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}
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inline Atomic32 NoBarrier_AtomicExchange(volatile Atomic32* ptr,
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Atomic32 new_value) {
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return (Atomic32)atomic_swap_32((volatile uint32_t*)ptr, (uint32_t)new_value);
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}
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inline Atomic32 NoBarrier_AtomicIncrement(volatile Atomic32* ptr,
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Atomic32 increment) {
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return (Atomic32)atomic_add_32_nv((volatile uint32_t*)ptr, (uint32_t)increment);
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}
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inline void MemoryBarrierInternal(void) {
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membar_producer();
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membar_consumer();
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}
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inline Atomic32 Barrier_AtomicIncrement(volatile Atomic32* ptr,
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Atomic32 increment) {
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MemoryBarrierInternal();
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Atomic32 ret = NoBarrier_AtomicIncrement(ptr, increment);
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MemoryBarrierInternal();
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return ret;
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}
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inline Atomic32 Acquire_CompareAndSwap(volatile Atomic32* ptr,
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Atomic32 old_value,
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Atomic32 new_value) {
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Atomic32 ret = NoBarrier_CompareAndSwap(ptr, old_value, new_value);
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MemoryBarrierInternal();
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return ret;
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}
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inline Atomic32 Release_CompareAndSwap(volatile Atomic32* ptr,
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Atomic32 old_value,
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Atomic32 new_value) {
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MemoryBarrierInternal();
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return NoBarrier_CompareAndSwap(ptr, old_value, new_value);
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}
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inline void NoBarrier_Store(volatile Atomic32* ptr, Atomic32 value) {
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*ptr = value;
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}
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inline void Acquire_Store(volatile Atomic32* ptr, Atomic32 value) {
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*ptr = value;
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membar_producer();
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}
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inline void Release_Store(volatile Atomic32* ptr, Atomic32 value) {
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membar_consumer();
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*ptr = value;
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}
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inline Atomic32 NoBarrier_Load(volatile const Atomic32* ptr) {
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return *ptr;
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}
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inline Atomic32 Acquire_Load(volatile const Atomic32* ptr) {
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Atomic32 val = *ptr;
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membar_consumer();
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return val;
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}
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inline Atomic32 Release_Load(volatile const Atomic32* ptr) {
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membar_producer();
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return *ptr;
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}
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#ifdef GOOGLE_PROTOBUF_ARCH_64_BIT
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inline Atomic64 NoBarrier_CompareAndSwap(volatile Atomic64* ptr,
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Atomic64 old_value,
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Atomic64 new_value) {
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return atomic_cas_64((volatile uint64_t*)ptr, (uint64_t)old_value, (uint64_t)new_value);
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}
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inline Atomic64 NoBarrier_AtomicExchange(volatile Atomic64* ptr, Atomic64 new_value) {
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return atomic_swap_64((volatile uint64_t*)ptr, (uint64_t)new_value);
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}
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inline Atomic64 NoBarrier_AtomicIncrement(volatile Atomic64* ptr, Atomic64 increment) {
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return atomic_add_64_nv((volatile uint64_t*)ptr, increment);
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}
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inline Atomic64 Barrier_AtomicIncrement(volatile Atomic64* ptr, Atomic64 increment) {
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MemoryBarrierInternal();
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Atomic64 ret = atomic_add_64_nv((volatile uint64_t*)ptr, increment);
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MemoryBarrierInternal();
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return ret;
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}
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inline Atomic64 Acquire_CompareAndSwap(volatile Atomic64* ptr,
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Atomic64 old_value,
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Atomic64 new_value) {
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Atomic64 ret = NoBarrier_CompareAndSwap(ptr, old_value, new_value);
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MemoryBarrierInternal();
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return ret;
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}
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inline Atomic64 Release_CompareAndSwap(volatile Atomic64* ptr,
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Atomic64 old_value,
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Atomic64 new_value) {
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MemoryBarrierInternal();
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return NoBarrier_CompareAndSwap(ptr, old_value, new_value);
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}
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inline void NoBarrier_Store(volatile Atomic64* ptr, Atomic64 value) {
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*ptr = value;
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}
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inline void Acquire_Store(volatile Atomic64* ptr, Atomic64 value) {
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*ptr = value;
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membar_producer();
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}
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inline void Release_Store(volatile Atomic64* ptr, Atomic64 value) {
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membar_consumer();
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*ptr = value;
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}
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inline Atomic64 NoBarrier_Load(volatile const Atomic64* ptr) {
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return *ptr;
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}
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inline Atomic64 Acquire_Load(volatile const Atomic64* ptr) {
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Atomic64 ret = *ptr;
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membar_consumer();
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return ret;
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}
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inline Atomic64 Release_Load(volatile const Atomic64* ptr) {
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membar_producer();
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return *ptr;
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}
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#endif
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} // namespace internal
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} // namespace protobuf
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} // namespace google
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#endif // GOOGLE_PROTOBUF_ATOMICOPS_INTERNALS_SPARC_GCC_H_
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