| // Copyright 2014 the V8 project authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| // This file is an internal atomic implementation, use atomicops.h instead. |
| |
| #ifndef V8_BASE_ATOMICOPS_INTERNALS_ATOMICWORD_COMPAT_H_ |
| #define V8_BASE_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(V8_HOST_ARCH_64_BIT) |
| |
| namespace v8 { |
| namespace base { |
| |
| 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 v8::base::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 v8::base::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 v8::base::Acquire_Store( |
| reinterpret_cast<volatile Atomic32*>(ptr), value); |
| } |
| |
| inline void Release_Store(volatile AtomicWord* ptr, AtomicWord value) { |
| return v8::base::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 v8::base::Acquire_Load( |
| reinterpret_cast<volatile const Atomic32*>(ptr)); |
| } |
| |
| inline AtomicWord Release_Load(volatile const AtomicWord* ptr) { |
| return v8::base::Release_Load( |
| reinterpret_cast<volatile const Atomic32*>(ptr)); |
| } |
| |
| } // namespace base |
| } // namespace v8 |
| |
| #endif // !defined(V8_HOST_ARCH_64_BIT) |
| |
| #endif // V8_BASE_ATOMICOPS_INTERNALS_ATOMICWORD_COMPAT_H_ |