atomicops_internals_atomicword_compat.h revision ba5b9a6411cb1792fd21f0a078d7a25cd1ceec16
15821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Protocol Buffers - Google's data interchange format 25821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Copyright 2012 Google Inc. All rights reserved. 35821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// http://code.google.com/p/protobuf/ 45821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// 55821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Redistribution and use in source and binary forms, with or without 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// modification, are permitted provided that the following conditions are 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// met: 82a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// 95821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// * Redistributions of source code must retain the above copyright 105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// notice, this list of conditions and the following disclaimer. 115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// * Redistributions in binary form must reproduce the above 125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// copyright notice, this list of conditions and the following disclaimer 135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// in the documentation and/or other materials provided with the 145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// distribution. 155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// * Neither the name of Google Inc. nor the names of its 165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// contributors may be used to endorse or promote products derived from 172a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// this software without specific prior written permission. 185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// 195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 302a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// This file is an internal atomic implementation, use atomicops.h instead. 325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifndef GOOGLE_PROTOBUF_ATOMICOPS_INTERNALS_ATOMICWORD_COMPAT_H_ 345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define GOOGLE_PROTOBUF_ATOMICOPS_INTERNALS_ATOMICWORD_COMPAT_H_ 355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// AtomicWord is a synonym for intptr_t, and Atomic32 is a synonym for int32, 375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// which in turn means int. On some LP32 platforms, intptr_t is an int, but 385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// on others, it's a long. When AtomicWord and Atomic32 are based on different 395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// fundamental types, their pointers are incompatible. 405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// 415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// This file defines function overloads to allow both AtomicWord and Atomic32 425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// data to be used with this interface. 435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// 445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// On LP64 platforms, AtomicWord and Atomic64 are both always long, 455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// so this problem doesn't occur. 465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if !defined(GOOGLE_PROTOBUF_HOST_ARCH_64_BIT) 485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace google { 505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace protobuf { 515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace internal { 525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 532a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)inline AtomicWord NoBarrier_CompareAndSwap(volatile AtomicWord* ptr, 545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) AtomicWord old_value, 555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) AtomicWord new_value) { 565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return NoBarrier_CompareAndSwap( 575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) reinterpret_cast<volatile Atomic32*>(ptr), old_value, new_value); 585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)inline AtomicWord NoBarrier_AtomicExchange(volatile AtomicWord* ptr, 615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) AtomicWord new_value) { 625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return NoBarrier_AtomicExchange( 635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) reinterpret_cast<volatile Atomic32*>(ptr), new_value); 645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 662a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)inline AtomicWord NoBarrier_AtomicIncrement(volatile AtomicWord* ptr, 672a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) AtomicWord increment) { 685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return NoBarrier_AtomicIncrement( 695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) reinterpret_cast<volatile Atomic32*>(ptr), increment); 705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)inline AtomicWord Barrier_AtomicIncrement(volatile AtomicWord* ptr, 735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) AtomicWord increment) { 745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return Barrier_AtomicIncrement( 755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) reinterpret_cast<volatile Atomic32*>(ptr), increment); 765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)inline AtomicWord Acquire_CompareAndSwap(volatile AtomicWord* ptr, 795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) AtomicWord old_value, 805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) AtomicWord new_value) { 815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return Acquire_CompareAndSwap( 825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) reinterpret_cast<volatile Atomic32*>(ptr), old_value, new_value); 835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)inline AtomicWord Release_CompareAndSwap(volatile AtomicWord* ptr, 865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) AtomicWord old_value, 872a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) AtomicWord new_value) { 882a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return Release_CompareAndSwap( 892a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) reinterpret_cast<volatile Atomic32*>(ptr), old_value, new_value); 905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)inline void NoBarrier_Store(volatile AtomicWord *ptr, AtomicWord value) { 935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) NoBarrier_Store(reinterpret_cast<volatile Atomic32*>(ptr), value); 945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)inline void Acquire_Store(volatile AtomicWord* ptr, AtomicWord value) { 975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return Acquire_Store(reinterpret_cast<volatile Atomic32*>(ptr), value); 985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)inline void Release_Store(volatile AtomicWord* ptr, AtomicWord value) { 1012a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return Release_Store(reinterpret_cast<volatile Atomic32*>(ptr), value); 1022a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} 1032a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 1045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)inline AtomicWord NoBarrier_Load(volatile const AtomicWord *ptr) { 1055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return NoBarrier_Load(reinterpret_cast<volatile const Atomic32*>(ptr)); 1065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)inline AtomicWord Acquire_Load(volatile const AtomicWord* ptr) { 1092a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return Acquire_Load(reinterpret_cast<volatile const Atomic32*>(ptr)); 1102a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} 1112a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 1125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)inline AtomicWord Release_Load(volatile const AtomicWord* ptr) { 1135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return Release_Load(reinterpret_cast<volatile const Atomic32*>(ptr)); 1145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1162a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} // namespace internal 1172a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} // namespace protobuf 1185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace google 1195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif // !defined(GOOGLE_PROTOBUF_HOST_ARCH_64_BIT) 1215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif // GOOGLE_PROTOBUF_ATOMICOPS_INTERNALS_ATOMICWORD_COMPAT_H_ 1235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)