| // Copyright 2014 the V8 project authors. All rights reserved. |
| // 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 V8_ATOMICOPS_INTERNALS_ATOMICWORD_COMPAT_H_ |
| #define V8_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 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 v8::internal::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::internal::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::internal::Acquire_Store( |
| reinterpret_cast<volatile Atomic32*>(ptr), value); |
| } |
| |
| inline void Release_Store(volatile AtomicWord* ptr, AtomicWord value) { |
| return v8::internal::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::internal::Acquire_Load( |
| reinterpret_cast<volatile const Atomic32*>(ptr)); |
| } |
| |
| inline AtomicWord Release_Load(volatile const AtomicWord* ptr) { |
| return v8::internal::Release_Load( |
| reinterpret_cast<volatile const Atomic32*>(ptr)); |
| } |
| |
| } } // namespace v8::internal |
| |
| #endif // !defined(V8_HOST_ARCH_64_BIT) |
| |
| #endif // V8_ATOMICOPS_INTERNALS_ATOMICWORD_COMPAT_H_ |