| /*************************************************************************** |
| * |
| * _atomic.h - definitions of inline functions for atomic operations |
| * |
| * This is an internal header file used to implement the C++ Standard |
| * Library. It should never be #included directly by a program. |
| * |
| * $Id$ |
| * |
| *************************************************************************** |
| * |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed |
| * with this work for additional information regarding copyright |
| * ownership. The ASF licenses this file to you under the Apache |
| * License, Version 2.0 (the "License"); you may not use this file |
| * except in compliance with the License. You may obtain a copy of |
| * the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or |
| * implied. See the License for the specific language governing |
| * permissions and limitations under the License. |
| * |
| * Copyright 1994-2008 Rogue Wave Software, Inc. |
| * |
| **************************************************************************/ |
| |
| #ifndef _RWSTD_RW_ATOMIC_H_INCLUDED |
| #define _RWSTD_RW_ATOMIC_H_INCLUDED |
| |
| |
| #if __GNUG__ >= 3 |
| # pragma GCC system_header |
| #endif // gcc >= 3 |
| |
| |
| #ifndef _RWSTD_RW_DEFS_H_INCLUDED |
| # include <rw/_defs.h> |
| #endif // _RWSTD_RW_DEFS_H_INCLUDED |
| |
| |
| #ifdef _RWSTD_REENTRANT |
| |
| # if defined (_RWSTD_NO_ATOMIC_OPS) |
| // do nothing |
| # elif defined (__DECCXX) |
| # include <rw/_atomic-deccxx.h> |
| # elif defined (__sparc) && (defined (__SUNPRO_CC) || defined (__GNUG__)) |
| # include <rw/_atomic-sparc.h> |
| # elif defined (_AIX43) && defined (__IBMCPP__) |
| # include <rw/_atomic-xlc.h> |
| # elif defined (__sgi) && defined (__host_mips) |
| # include <rw/_atomic-mipspro.h> |
| # elif defined (_PA_RISC2_0) |
| # include <rw/_atomic-parisc.h> |
| # elif defined (__GNUG__) && (__GNUC__ * 100 + __GNUC_MINOR__ >= 401) \ |
| && (defined (__i486__) || defined (__x86_64) || defined (__ia64)) \ |
| && !defined (__INTEL_COMPILER) \ |
| || (defined (__INTEL_COMPILER) && defined (__ia64)) |
| # include <rw/_atomic-sync.h> |
| # elif defined (__i386__) && (defined (__GNUG__) \ |
| || defined (__INTEL_COMPILER)) || defined (_M_IX86) |
| # include <rw/_atomic-x86.h> |
| # elif defined (__ia64) || defined (__x86_64) || defined (_M_X64) |
| # include <rw/_atomic-x64.h> |
| # else |
| # define _RWSTD_NO_ATOMIC_OPS |
| # endif |
| |
| # ifndef _RWSTD_NO_ATOMIC_OPS |
| |
| /********************** generic bool functions ************************/ |
| |
| # ifndef _RWSTD_NO_BOOL |
| |
| # if _RWSTD_BOOL_SIZE == _RWSTD_CHAR_SIZE \ |
| && !defined (_RWSTD_NO_CHAR_ATOMIC_OPS) |
| # define _RWSTD_BOOL_TYPE char |
| # elif _RWSTD_BOOL_SIZE == _RWSTD_SHORT_SIZE \ |
| && !defined (_RWSTD_NO_SHORT_ATOMIC_OPS) |
| # define _RWSTD_BOOL_TYPE short |
| # elif _RWSTD_BOOL_SIZE == _RWSTD_INT_SIZE \ |
| && !defined (_RWSTD_NO_INT_ATOMIC_OPS) |
| # define _RWSTD_BOOL_TYPE int |
| # endif |
| |
| # ifdef _RWSTD_BOOL_TYPE |
| |
| _RWSTD_NAMESPACE (__rw) { |
| |
| inline bool |
| __rw_atomic_exchange (bool &__x, bool __y, bool) |
| { |
| return 0 != __rw_atomic_exchange ( |
| _RWSTD_REINTERPRET_CAST (_RWSTD_BOOL_TYPE&, __x), |
| _RWSTD_STATIC_CAST (_RWSTD_BOOL_TYPE, __y), |
| false); |
| } |
| |
| } // namespace __rw |
| |
| # undef _RWSTD_BOOL_TYPE |
| # endif // _RWSTD_BOOL_TYPE |
| |
| # endif // _RWSTD_NO_BOOL |
| |
| |
| /********************** generic long functions ************************/ |
| |
| # if _RWSTD_LONG_SIZE == _RWSTD_INT_SIZE \ |
| && defined (_RWSTD_NO_LONG_ATOMIC_OPS) \ |
| && !defined (_RWSTD_NO_INT_ATOMIC_OPS) |
| |
| # undef _RWSTD_NO_LONG_ATOMIC_OPS |
| |
| # if 6 == _RWSTD_HP_aCC_MAJOR |
| // suppress HP aCC 64 bit migration remark: conversion from |
| // "long *" to "int *" may cause target of pointers to have |
| // a different size |
| # pragma diag_suppress 4230 |
| # endif // HP aCC 6 |
| |
| _RWSTD_NAMESPACE (__rw) { |
| |
| inline long |
| __rw_atomic_preincrement (long &__x, bool) |
| { |
| return __rw_atomic_preincrement (_RWSTD_REINTERPRET_CAST (int&, __x), |
| false); |
| } |
| |
| inline unsigned long |
| __rw_atomic_preincrement (unsigned long &__x, bool) |
| { |
| return __rw_atomic_preincrement (_RWSTD_REINTERPRET_CAST (int&, __x), |
| false); |
| } |
| |
| inline long |
| __rw_atomic_predecrement (long &__x, bool) |
| { |
| return __rw_atomic_predecrement (_RWSTD_REINTERPRET_CAST (int&, __x), |
| false); |
| } |
| |
| inline unsigned long |
| __rw_atomic_predecrement (unsigned long &__x, bool) |
| { |
| return __rw_atomic_predecrement (_RWSTD_REINTERPRET_CAST (int&, __x), |
| false); |
| } |
| |
| inline long |
| __rw_atomic_exchange (long &__x, long __y, bool) |
| { |
| return __rw_atomic_exchange (_RWSTD_REINTERPRET_CAST (int&, __x), |
| _RWSTD_STATIC_CAST (int, __y), |
| false); |
| } |
| |
| inline unsigned long |
| __rw_atomic_exchange (unsigned long &__x, |
| unsigned long __y, bool) |
| { |
| return __rw_atomic_exchange (_RWSTD_REINTERPRET_CAST (int&, __x), |
| _RWSTD_STATIC_CAST (int, __y), |
| false); |
| } |
| |
| } // namespace __rw |
| |
| # if 6 == _RWSTD_HP_aCC_MAJOR |
| # pragma diag_default 4230 |
| # endif // HP aCC 6 |
| |
| # endif // _RWSTD_LONG_SIZE == _RWSTD_INT_SIZE |
| |
| |
| /********************** generic long long functions *******************/ |
| |
| # if defined (_RWSTD_LONG_LONG) \ |
| && _RWSTD_LLONG_SIZE == _RWSTD_LONG_SIZE \ |
| && defined (_RWSTD_NO_LLONG_ATOMIC_OPS) \ |
| && !defined (_RWSTD_NO_LONG_ATOMIC_OPS) |
| |
| # undef _RWSTD_NO_LLONG_ATOMIC_OPS |
| |
| _RWSTD_NAMESPACE (__rw) { |
| |
| inline _RWSTD_LONG_LONG |
| __rw_atomic_preincrement (_RWSTD_LONG_LONG &__x, bool) |
| { |
| return __rw_atomic_preincrement (_RWSTD_REINTERPRET_CAST (long&, __x), |
| false); |
| } |
| |
| inline unsigned _RWSTD_LONG_LONG |
| __rw_atomic_preincrement (unsigned _RWSTD_LONG_LONG &__x, bool) |
| { |
| return __rw_atomic_preincrement (_RWSTD_REINTERPRET_CAST (long&, __x), |
| false); |
| } |
| |
| inline _RWSTD_LONG_LONG |
| __rw_atomic_predecrement (_RWSTD_LONG_LONG &__x, bool) |
| { |
| return __rw_atomic_predecrement (_RWSTD_REINTERPRET_CAST (long&, __x), |
| false); |
| } |
| |
| inline unsigned _RWSTD_LONG_LONG |
| __rw_atomic_predecrement (unsigned _RWSTD_LONG_LONG &__x, bool) |
| { |
| return __rw_atomic_predecrement (_RWSTD_REINTERPRET_CAST (long&, __x), |
| false); |
| } |
| |
| inline _RWSTD_LONG_LONG |
| __rw_atomic_exchange (_RWSTD_LONG_LONG &__x, _RWSTD_LONG_LONG __y, bool) |
| { |
| return __rw_atomic_exchange (_RWSTD_REINTERPRET_CAST (long&, __x), |
| _RWSTD_STATIC_CAST (long, __y), |
| false); |
| } |
| |
| inline unsigned _RWSTD_LONG_LONG |
| __rw_atomic_exchange (unsigned _RWSTD_LONG_LONG &__x, |
| unsigned _RWSTD_LONG_LONG __y, bool) |
| { |
| return __rw_atomic_exchange (_RWSTD_REINTERPRET_CAST (long&, __x), |
| _RWSTD_STATIC_CAST (long, __y), |
| false); |
| } |
| |
| } // namespace __rw |
| |
| # endif // _RWSTD_LONG_LONG && _RWSTD_LLONG_SIZE == _RWSTD_LONG_SIZE |
| |
| # endif // _RWSTD_NO_ATOMIC_OPS |
| |
| #else // if !defined (_RWSTD_REENTRANT) |
| |
| _RWSTD_NAMESPACE (__rw) { |
| |
| // atomic in a single-threaded environment |
| template <class _TypeT, class _TypeU> |
| inline |
| _TypeT __rw_atomic_exchange (_TypeT &__t, const _TypeU &__u, bool) |
| { |
| _TypeT __tmp = __t; |
| __t = _TypeT (__u); |
| return __tmp; |
| } |
| |
| } // namespace __rw |
| |
| #endif // _RWSTD_REENTRANT |
| |
| |
| _RWSTD_NAMESPACE (__rw) { |
| |
| // available in all environments (ST and MT), used along with |
| // __rw_atomic_exchange<>() from conditional expressions in iostreams |
| template <class _TypeT, class _TypeU> |
| inline |
| _TypeT __rw_ordinary_exchange (_TypeT &__t, const _TypeU &__u) |
| { |
| _TypeT __tmp = __t; |
| __t = __u; |
| return __tmp; |
| } |
| |
| } // namespace __rw |
| |
| |
| #endif // _RWSTD_RW_ATOMIC_H_INCLUDED |
