// Protocol Buffers - Google's data interchange format
// Copyright 2012 Google Inc. All rights reserved.
// http://code.google.com/p/protobuf/
//
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// 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.
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// contributors may be used to endorse or promote products derived from
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//
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// This file is an internal atomic implementation, use atomicops.h instead.
#ifndef GOOGLE_PROTOBUF_ATOMICOPS_INTERNALS_ATOMICWORD_COMPAT_H_
#define GOOGLE_PROTOBUF_ATOMICOPS_INTERNALS_ATOMICWORD_COMPAT_H_
// AtomicWord is a synonym for intptr_t, and Atomic32 is a synonym for int32,
// which in turn means int. On some LP32 platforms, intptr_t is an int, but
// on others, it's a long. When AtomicWord and Atomic32 are based on different
// fundamental types, their pointers are incompatible.
//
// This file defines function overloads to allow both AtomicWord and Atomic32
// data to be used with this interface.
//
// On LP64 platforms, AtomicWord and Atomic64 are both always long,
// so this problem doesn't occur.
#if !defined(GOOGLE_PROTOBUF_ARCH_64_BIT)
namespace google {
namespace protobuf {
namespace internal {
inline AtomicWord NoBarrier_CompareAndSwap(volatile AtomicWord* ptr,
AtomicWord old_value,
AtomicWord new_value) {
return NoBarrier_CompareAndSwap(
reinterpret_cast<volatile Atomic32*>(ptr), old_value, new_value);
}
inline AtomicWord NoBarrier_AtomicExchange(volatile AtomicWord* ptr,
AtomicWord new_value) {
return NoBarrier_AtomicExchange(
reinterpret_cast<volatile Atomic32*>(ptr), new_value);
}
inline AtomicWord NoBarrier_AtomicIncrement(volatile AtomicWord* ptr,
AtomicWord increment) {
return NoBarrier_AtomicIncrement(
reinterpret_cast<volatile Atomic32*>(ptr), increment);
}
inline AtomicWord Barrier_AtomicIncrement(volatile AtomicWord* ptr,
AtomicWord increment) {
return Barrier_AtomicIncrement(
reinterpret_cast<volatile Atomic32*>(ptr), increment);
}
inline AtomicWord Acquire_CompareAndSwap(volatile AtomicWord* ptr,
AtomicWord old_value,
AtomicWord new_value) {
return Acquire_CompareAndSwap(
reinterpret_cast<volatile Atomic32*>(ptr), old_value, new_value);
}
inline AtomicWord Release_CompareAndSwap(volatile AtomicWord* ptr,
AtomicWord old_value,
AtomicWord new_value) {
return Release_CompareAndSwap(
reinterpret_cast<volatile Atomic32*>(ptr), old_value, new_value);
}
inline void NoBarrier_Store(volatile AtomicWord *ptr, AtomicWord value) {
NoBarrier_Store(reinterpret_cast<volatile Atomic32*>(ptr), value);
}
inline void Acquire_Store(volatile AtomicWord* ptr, AtomicWord value) {
return Acquire_Store(reinterpret_cast<volatile Atomic32*>(ptr), value);
}
inline void Release_Store(volatile AtomicWord* ptr, AtomicWord value) {
return Release_Store(reinterpret_cast<volatile Atomic32*>(ptr), value);
}
inline AtomicWord NoBarrier_Load(volatile const AtomicWord *ptr) {
return NoBarrier_Load(reinterpret_cast<volatile const Atomic32*>(ptr));
}
inline AtomicWord Acquire_Load(volatile const AtomicWord* ptr) {
return Acquire_Load(reinterpret_cast<volatile const Atomic32*>(ptr));
}
inline AtomicWord Release_Load(volatile const AtomicWord* ptr) {
return Release_Load(reinterpret_cast<volatile const Atomic32*>(ptr));
}
} // namespace internal
} // namespace protobuf
} // namespace google
#endif // !defined(GOOGLE_PROTOBUF_ARCH_64_BIT)
#endif // GOOGLE_PROTOBUF_ATOMICOPS_INTERNALS_ATOMICWORD_COMPAT_H_