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