atomicops_internals_tsan.h

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// Protocol Buffers - Google's data interchange format
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// This file is an internal atomic implementation for compiler-based
// ThreadSanitizer (http://clang.llvm.org/docs/ThreadSanitizer.html).
// Use atomicops.h instead.

#ifndef GOOGLE_PROTOBUF_ATOMICOPS_INTERNALS_TSAN_H_
#define GOOGLE_PROTOBUF_ATOMICOPS_INTERNALS_TSAN_H_

#define ATOMICOPS_COMPILER_BARRIER() __asm__ __volatile__("" : : : "memory")

#include <sanitizer/tsan_interface_atomic.h>

namespace google {
namespace protobuf {
namespace internal {

inline Atomic32 NoBarrier_CompareAndSwap(volatile Atomic32 *ptr,
 Atomic32 old_value,
 Atomic32 new_value) {
 Atomic32 cmp = old_value;
 __tsan_atomic32_compare_exchange_strong(ptr, &cmp, new_value,
 __tsan_memory_order_relaxed, __tsan_memory_order_relaxed);
 return cmp;
}

inline Atomic32 NoBarrier_AtomicExchange(volatile Atomic32 *ptr,
 Atomic32 new_value) {
 return __tsan_atomic32_exchange(ptr, new_value,
 __tsan_memory_order_relaxed);
}

inline Atomic32 Acquire_AtomicExchange(volatile Atomic32 *ptr,
 Atomic32 new_value) {
 return __tsan_atomic32_exchange(ptr, new_value,
 __tsan_memory_order_acquire);
}

inline Atomic32 Release_AtomicExchange(volatile Atomic32 *ptr,
 Atomic32 new_value) {
 return __tsan_atomic32_exchange(ptr, new_value,
 __tsan_memory_order_release);
}

inline Atomic32 NoBarrier_AtomicIncrement(volatile Atomic32 *ptr,
 Atomic32 increment) {
 return increment + __tsan_atomic32_fetch_add(ptr, increment,
 __tsan_memory_order_relaxed);
}

inline Atomic32 Barrier_AtomicIncrement(volatile Atomic32 *ptr,
 Atomic32 increment) {
 return increment + __tsan_atomic32_fetch_add(ptr, increment,
 __tsan_memory_order_acq_rel);
}

inline Atomic32 Acquire_CompareAndSwap(volatile Atomic32 *ptr,
 Atomic32 old_value,
 Atomic32 new_value) {
 Atomic32 cmp = old_value;
 __tsan_atomic32_compare_exchange_strong(ptr, &cmp, new_value,
 __tsan_memory_order_acquire, __tsan_memory_order_acquire);
 return cmp;
}

inline Atomic32 Release_CompareAndSwap(volatile Atomic32 *ptr,
 Atomic32 old_value,
 Atomic32 new_value) {
 Atomic32 cmp = old_value;
 __tsan_atomic32_compare_exchange_strong(ptr, &cmp, new_value,
 __tsan_memory_order_release, __tsan_memory_order_relaxed);
 return cmp;
}

inline void NoBarrier_Store(volatile Atomic32 *ptr, Atomic32 value) {
 __tsan_atomic32_store(ptr, value, __tsan_memory_order_relaxed);
}

inline void Acquire_Store(volatile Atomic32 *ptr, Atomic32 value) {
 __tsan_atomic32_store(ptr, value, __tsan_memory_order_relaxed);
 __tsan_atomic_thread_fence(__tsan_memory_order_seq_cst);
}

inline void Release_Store(volatile Atomic32 *ptr, Atomic32 value) {
 __tsan_atomic32_store(ptr, value, __tsan_memory_order_release);
}

inline Atomic32 NoBarrier_Load(volatile const Atomic32 *ptr) {
 return __tsan_atomic32_load(ptr, __tsan_memory_order_relaxed);
}

inline Atomic32 Acquire_Load(volatile const Atomic32 *ptr) {
 return __tsan_atomic32_load(ptr, __tsan_memory_order_acquire);
}

inline Atomic32 Release_Load(volatile const Atomic32 *ptr) {
 __tsan_atomic_thread_fence(__tsan_memory_order_seq_cst);
 return __tsan_atomic32_load(ptr, __tsan_memory_order_relaxed);
}

inline Atomic64 NoBarrier_CompareAndSwap(volatile Atomic64 *ptr,
 Atomic64 old_value,
 Atomic64 new_value) {
 Atomic64 cmp = old_value;
 __tsan_atomic64_compare_exchange_strong(ptr, &cmp, new_value,
 __tsan_memory_order_relaxed, __tsan_memory_order_relaxed);
 return cmp;
}

inline Atomic64 NoBarrier_AtomicExchange(volatile Atomic64 *ptr,
 Atomic64 new_value) {
 return __tsan_atomic64_exchange(ptr, new_value, __tsan_memory_order_relaxed);
}

inline Atomic64 Acquire_AtomicExchange(volatile Atomic64 *ptr,
 Atomic64 new_value) {
 return __tsan_atomic64_exchange(ptr, new_value, __tsan_memory_order_acquire);
}

inline Atomic64 Release_AtomicExchange(volatile Atomic64 *ptr,
 Atomic64 new_value) {
 return __tsan_atomic64_exchange(ptr, new_value, __tsan_memory_order_release);
}

inline Atomic64 NoBarrier_AtomicIncrement(volatile Atomic64 *ptr,
 Atomic64 increment) {
 return increment + __tsan_atomic64_fetch_add(ptr, increment,
 __tsan_memory_order_relaxed);
}

inline Atomic64 Barrier_AtomicIncrement(volatile Atomic64 *ptr,
 Atomic64 increment) {
 return increment + __tsan_atomic64_fetch_add(ptr, increment,
 __tsan_memory_order_acq_rel);
}

inline void NoBarrier_Store(volatile Atomic64 *ptr, Atomic64 value) {
 __tsan_atomic64_store(ptr, value, __tsan_memory_order_relaxed);
}

inline void Acquire_Store(volatile Atomic64 *ptr, Atomic64 value) {
 __tsan_atomic64_store(ptr, value, __tsan_memory_order_relaxed);
 __tsan_atomic_thread_fence(__tsan_memory_order_seq_cst);
}

inline void Release_Store(volatile Atomic64 *ptr, Atomic64 value) {
 __tsan_atomic64_store(ptr, value, __tsan_memory_order_release);
}

inline Atomic64 NoBarrier_Load(volatile const Atomic64 *ptr) {
 return __tsan_atomic64_load(ptr, __tsan_memory_order_relaxed);
}

inline Atomic64 Acquire_Load(volatile const Atomic64 *ptr) {
 return __tsan_atomic64_load(ptr, __tsan_memory_order_acquire);
}

inline Atomic64 Release_Load(volatile const Atomic64 *ptr) {
 __tsan_atomic_thread_fence(__tsan_memory_order_seq_cst);
 return __tsan_atomic64_load(ptr, __tsan_memory_order_relaxed);
}

inline Atomic64 Acquire_CompareAndSwap(volatile Atomic64 *ptr,
 Atomic64 old_value,
 Atomic64 new_value) {
 Atomic64 cmp = old_value;
 __tsan_atomic64_compare_exchange_strong(ptr, &cmp, new_value,
 __tsan_memory_order_acquire, __tsan_memory_order_acquire);
 return cmp;
}

inline Atomic64 Release_CompareAndSwap(volatile Atomic64 *ptr,
 Atomic64 old_value,
 Atomic64 new_value) {
 Atomic64 cmp = old_value;
 __tsan_atomic64_compare_exchange_strong(ptr, &cmp, new_value,
 __tsan_memory_order_release, __tsan_memory_order_relaxed);
 return cmp;
}

inline void MemoryBarrier() {
 __tsan_atomic_thread_fence(__tsan_memory_order_seq_cst);
}

} // namespace internal
} // namespace protobuf
} // namespace google

#undef ATOMICOPS_COMPILER_BARRIER

#endif // GOOGLE_PROTOBUF_ATOMICOPS_INTERNALS_TSAN_H_