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497 lines
16 KiB
497 lines
16 KiB
/****************************************************************************
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**
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** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
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** All rights reserved.
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** This file is part of the QtCore module of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** Commercial Usage
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** Licensees holding valid Qt Commercial licenses may use this file in
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** accordance with the Qt Commercial License Agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and Nokia.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU Lesser General Public License version 2.1 requirements
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Nokia gives you certain additional
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** rights. These rights are described in the Nokia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 3.0 as published by the Free Software
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** Foundation and appearing in the file LICENSE.GPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU General Public License version 3.0 requirements will be
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** met: http://www.gnu.org/copyleft/gpl.html.
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**
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** If you have questions regarding the use of this file, please contact
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** Nokia at qt-info@nokia.com.
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#ifndef QATOMIC_WINDOWS_H
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#define QATOMIC_WINDOWS_H
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#ifndef Q_CC_MSVC
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// Mingw and other GCC platforms get inline assembly
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# ifdef __i386__
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# include "QtCore/qatomic_i386.h"
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# else
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# include "QtCore/qatomic_x86_64.h"
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# endif
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#else // Q_CC_MSVC
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////////////////////////////////////////////////////////////////////////////////////////////////////
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#ifndef Q_OS_WINCE
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// use compiler intrinsics for all atomic functions
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# define QT_INTERLOCKED_PREFIX _
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# define QT_INTERLOCKED_PROTOTYPE __cdecl
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# define QT_INTERLOCKED_DECLARE_PROTOTYPES
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# define QT_INTERLOCKED_INTRINSIC
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#else // Q_OS_WINCE
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# if _WIN32_WCE < 0x600 && defined(_X86_)
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// For X86 Windows CE, include winbase.h to catch inline functions which
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// override the regular definitions inside of coredll.dll.
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// Though one could use the original version of Increment/Decrement, others are
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// not exported at all.
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# include <winbase.h>
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// It's safer to remove the volatile and let the compiler add it as needed.
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# define QT_INTERLOCKED_NO_VOLATILE
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# else // _WIN32_WCE >= 0x600 || !_X86_
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# define QT_INTERLOCKED_PROTOTYPE __cdecl
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# define QT_INTERLOCKED_DECLARE_PROTOTYPES
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# if _WIN32_WCE >= 0x600
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# if defined(_X86_)
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# define QT_INTERLOCKED_PREFIX _
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# define QT_INTERLOCKED_INTRINSIC
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# endif
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# else
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# define QT_INTERLOCKED_NO_VOLATILE
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# endif
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# endif // _WIN32_WCE >= 0x600 || !_X86_
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#endif // Q_OS_WINCE
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////////////////////////////////////////////////////////////////////////////////////////////////////
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// Prototype declaration
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#define QT_INTERLOCKED_CONCAT_I(prefix, suffix) \
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prefix ## suffix
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#define QT_INTERLOCKED_CONCAT(prefix, suffix) \
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QT_INTERLOCKED_CONCAT_I(prefix, suffix)
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// MSVC intrinsics prefix function names with an underscore. Also, if platform
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// SDK headers have been included, the Interlocked names may be defined as
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// macros.
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// To avoid double underscores, we paste the prefix with Interlocked first and
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// then the remainder of the function name.
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#define QT_INTERLOCKED_FUNCTION(name) \
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QT_INTERLOCKED_CONCAT( \
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QT_INTERLOCKED_CONCAT(QT_INTERLOCKED_PREFIX, Interlocked), name)
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#ifdef QT_INTERLOCKED_NO_VOLATILE
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# define QT_INTERLOCKED_VOLATILE
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# define QT_INTERLOCKED_REMOVE_VOLATILE(a) qt_interlocked_remove_volatile(a)
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#else
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# define QT_INTERLOCKED_VOLATILE volatile
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# define QT_INTERLOCKED_REMOVE_VOLATILE(a) a
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#endif
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#ifndef QT_INTERLOCKED_PREFIX
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#define QT_INTERLOCKED_PREFIX
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#endif
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#ifndef QT_INTERLOCKED_PROTOTYPE
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#define QT_INTERLOCKED_PROTOTYPE
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#endif
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#ifdef QT_INTERLOCKED_DECLARE_PROTOTYPES
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#undef QT_INTERLOCKED_DECLARE_PROTOTYPES
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extern "C" {
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long QT_INTERLOCKED_PROTOTYPE QT_INTERLOCKED_FUNCTION( Increment )(long QT_INTERLOCKED_VOLATILE *);
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long QT_INTERLOCKED_PROTOTYPE QT_INTERLOCKED_FUNCTION( Decrement )(long QT_INTERLOCKED_VOLATILE *);
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long QT_INTERLOCKED_PROTOTYPE QT_INTERLOCKED_FUNCTION( CompareExchange )(long QT_INTERLOCKED_VOLATILE *, long, long);
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long QT_INTERLOCKED_PROTOTYPE QT_INTERLOCKED_FUNCTION( Exchange )(long QT_INTERLOCKED_VOLATILE *, long);
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long QT_INTERLOCKED_PROTOTYPE QT_INTERLOCKED_FUNCTION( ExchangeAdd )(long QT_INTERLOCKED_VOLATILE *, long);
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# if !defined(Q_OS_WINCE) && !defined(__i386__) && !defined(_M_IX86)
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void * QT_INTERLOCKED_FUNCTION( CompareExchangePointer )(void * QT_INTERLOCKED_VOLATILE *, void *, void *);
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void * QT_INTERLOCKED_FUNCTION( ExchangePointer )(void * QT_INTERLOCKED_VOLATILE *, void *);
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__int64 QT_INTERLOCKED_FUNCTION( ExchangeAdd64 )(__int64 QT_INTERLOCKED_VOLATILE *, __int64);
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# endif
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}
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#endif // QT_INTERLOCKED_DECLARE_PROTOTYPES
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#undef QT_INTERLOCKED_PROTOTYPE
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////////////////////////////////////////////////////////////////////////////////////////////////////
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#ifdef QT_INTERLOCKED_INTRINSIC
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#undef QT_INTERLOCKED_INTRINSIC
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# pragma intrinsic (_InterlockedIncrement)
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# pragma intrinsic (_InterlockedDecrement)
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# pragma intrinsic (_InterlockedExchange)
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# pragma intrinsic (_InterlockedCompareExchange)
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# pragma intrinsic (_InterlockedExchangeAdd)
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# if !defined(Q_OS_WINCE) && !defined(_M_IX86)
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# pragma intrinsic (_InterlockedCompareExchangePointer)
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# pragma intrinsic (_InterlockedExchangePointer)
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# pragma intrinsic (_InterlockedExchangeAdd64)
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# endif
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#endif // QT_INTERLOCKED_INTRINSIC
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////////////////////////////////////////////////////////////////////////////////////////////////////
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// Interlocked* replacement macros
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#define QT_INTERLOCKED_INCREMENT(value) \
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QT_INTERLOCKED_FUNCTION( Increment )( \
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QT_INTERLOCKED_REMOVE_VOLATILE( value ) )
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#define QT_INTERLOCKED_DECREMENT(value) \
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QT_INTERLOCKED_FUNCTION( Decrement )( \
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QT_INTERLOCKED_REMOVE_VOLATILE( value ) )
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#define QT_INTERLOCKED_COMPARE_EXCHANGE(value, newValue, expectedValue) \
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QT_INTERLOCKED_FUNCTION( CompareExchange )( \
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QT_INTERLOCKED_REMOVE_VOLATILE( value ), \
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newValue, \
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expectedValue )
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#define QT_INTERLOCKED_EXCHANGE(value, newValue) \
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QT_INTERLOCKED_FUNCTION( Exchange )( \
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QT_INTERLOCKED_REMOVE_VOLATILE( value ), \
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newValue )
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#define QT_INTERLOCKED_EXCHANGE_ADD(value, valueToAdd) \
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QT_INTERLOCKED_FUNCTION( ExchangeAdd )( \
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QT_INTERLOCKED_REMOVE_VOLATILE( value ), \
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valueToAdd )
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#if defined(Q_OS_WINCE) || defined(__i386__) || defined(_M_IX86)
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# define QT_INTERLOCKED_COMPARE_EXCHANGE_POINTER(value, newValue, expectedValue) \
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reinterpret_cast<void *>( \
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QT_INTERLOCKED_FUNCTION( CompareExchange )( \
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QT_INTERLOCKED_REMOVE_VOLATILE( value ## _integral ), \
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(long)( newValue ), \
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(long)( expectedValue ) ))
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# define QT_INTERLOCKED_EXCHANGE_POINTER(value, newValue) \
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QT_INTERLOCKED_FUNCTION( Exchange )( \
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QT_INTERLOCKED_REMOVE_VOLATILE( value ## _integral ), \
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(quintptr)( newValue ) )
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# define QT_INTERLOCKED_EXCHANGE_ADD_POINTER(value, valueToAdd) \
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QT_INTERLOCKED_FUNCTION( ExchangeAdd )( \
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QT_INTERLOCKED_REMOVE_VOLATILE( value ## _integral ), \
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valueToAdd )
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#else // !defined(Q_OS_WINCE) && !defined(__i386__) && !defined(_M_IX86)
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# define QT_INTERLOCKED_COMPARE_EXCHANGE_POINTER(value, newValue, expectedValue) \
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QT_INTERLOCKED_FUNCTION( CompareExchangePointer )( \
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reinterpret_cast<void * QT_INTERLOCKED_VOLATILE *>( QT_INTERLOCKED_REMOVE_VOLATILE( value ) ), \
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newValue, \
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expectedValue )
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# define QT_INTERLOCKED_EXCHANGE_POINTER(value, newValue) \
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QT_INTERLOCKED_FUNCTION( ExchangePointer )( \
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reinterpret_cast<void * QT_INTERLOCKED_VOLATILE *>( QT_INTERLOCKED_REMOVE_VOLATILE( value ) ), \
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newValue )
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# define QT_INTERLOCKED_EXCHANGE_ADD_POINTER(value, valueToAdd) \
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QT_INTERLOCKED_FUNCTION( ExchangeAdd64 )( \
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QT_INTERLOCKED_REMOVE_VOLATILE( value ## _integral ), \
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valueToAdd )
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#endif // !defined(Q_OS_WINCE) && !defined(__i386__) && !defined(_M_IX86)
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////////////////////////////////////////////////////////////////////////////////////////////////////
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QT_BEGIN_HEADER
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QT_BEGIN_NAMESPACE
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#define Q_ATOMIC_INT_REFERENCE_COUNTING_IS_ALWAYS_NATIVE
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#define Q_ATOMIC_INT_REFERENCE_COUNTING_IS_WAIT_FREE
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inline bool QBasicAtomicInt::isReferenceCountingNative()
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{ return true; }
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inline bool QBasicAtomicInt::isReferenceCountingWaitFree()
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{ return true; }
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#define Q_ATOMIC_INT_TEST_AND_SET_IS_ALWAYS_NATIVE
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#define Q_ATOMIC_INT_TEST_AND_SET_IS_WAIT_FREE
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inline bool QBasicAtomicInt::isTestAndSetNative()
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{ return true; }
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inline bool QBasicAtomicInt::isTestAndSetWaitFree()
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{ return true; }
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#define Q_ATOMIC_INT_FETCH_AND_STORE_IS_ALWAYS_NATIVE
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#define Q_ATOMIC_INT_FETCH_AND_STORE_IS_WAIT_FREE
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inline bool QBasicAtomicInt::isFetchAndStoreNative()
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{ return true; }
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inline bool QBasicAtomicInt::isFetchAndStoreWaitFree()
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{ return true; }
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#define Q_ATOMIC_INT_FETCH_AND_ADD_IS_ALWAYS_NATIVE
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#define Q_ATOMIC_INT_FETCH_AND_ADD_IS_WAIT_FREE
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inline bool QBasicAtomicInt::isFetchAndAddNative()
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{ return true; }
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inline bool QBasicAtomicInt::isFetchAndAddWaitFree()
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{ return true; }
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#define Q_ATOMIC_POINTER_TEST_AND_SET_IS_ALWAYS_NATIVE
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#define Q_ATOMIC_POINTER_TEST_AND_SET_IS_WAIT_FREE
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template <typename T>
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Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::isTestAndSetNative()
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{ return true; }
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template <typename T>
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Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::isTestAndSetWaitFree()
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{ return true; }
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#define Q_ATOMIC_POINTER_FETCH_AND_STORE_IS_ALWAYS_NATIVE
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#define Q_ATOMIC_POINTER_FETCH_AND_STORE_IS_WAIT_FREE
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template <typename T>
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Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::isFetchAndStoreNative()
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{ return true; }
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template <typename T>
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Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::isFetchAndStoreWaitFree()
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{ return true; }
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#define Q_ATOMIC_POINTER_FETCH_AND_ADD_IS_ALWAYS_NATIVE
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#define Q_ATOMIC_POINTER_FETCH_AND_ADD_IS_WAIT_FREE
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template <typename T>
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Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::isFetchAndAddNative()
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{ return true; }
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template <typename T>
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Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::isFetchAndAddWaitFree()
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{ return true; }
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////////////////////////////////////////////////////////////////////////////////////////////////////
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#ifdef QT_INTERLOCKED_NO_VOLATILE
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template <class T>
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Q_INLINE_TEMPLATE T *qt_interlocked_remove_volatile(T volatile *t)
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{
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return const_cast<T *>(t);
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}
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#endif // !QT_INTERLOCKED_NO_VOLATILE
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////////////////////////////////////////////////////////////////////////////////////////////////////
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inline bool QBasicAtomicInt::ref()
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{
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return QT_INTERLOCKED_INCREMENT(&_q_value) != 0;
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}
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inline bool QBasicAtomicInt::deref()
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{
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return QT_INTERLOCKED_DECREMENT(&_q_value) != 0;
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}
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inline bool QBasicAtomicInt::testAndSetOrdered(int expectedValue, int newValue)
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{
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return QT_INTERLOCKED_COMPARE_EXCHANGE(&_q_value, newValue, expectedValue)
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== expectedValue;
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}
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inline int QBasicAtomicInt::fetchAndStoreOrdered(int newValue)
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{
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return QT_INTERLOCKED_EXCHANGE(&_q_value, newValue);
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}
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inline int QBasicAtomicInt::fetchAndAddOrdered(int valueToAdd)
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{
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return QT_INTERLOCKED_EXCHANGE_ADD(&_q_value, valueToAdd);
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}
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////////////////////////////////////////////////////////////////////////////////////////////////////
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template <typename T>
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Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::testAndSetOrdered(T *expectedValue, T *newValue)
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{
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return QT_INTERLOCKED_COMPARE_EXCHANGE_POINTER(&_q_value, newValue, expectedValue)
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== expectedValue;
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}
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template <typename T>
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Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndStoreOrdered(T* newValue)
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{
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return reinterpret_cast<T *>(
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QT_INTERLOCKED_EXCHANGE_POINTER(&_q_value, newValue));
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}
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template <typename T>
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Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndAddOrdered(qptrdiff valueToAdd)
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{
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return reinterpret_cast<T *>(
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QT_INTERLOCKED_EXCHANGE_ADD_POINTER(&_q_value, valueToAdd * sizeof(T)));
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}
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////////////////////////////////////////////////////////////////////////////////////////////////////
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inline bool QBasicAtomicInt::testAndSetRelaxed(int expectedValue, int newValue)
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{
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return testAndSetOrdered(expectedValue, newValue);
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}
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inline bool QBasicAtomicInt::testAndSetAcquire(int expectedValue, int newValue)
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{
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return testAndSetOrdered(expectedValue, newValue);
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}
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inline bool QBasicAtomicInt::testAndSetRelease(int expectedValue, int newValue)
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{
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return testAndSetOrdered(expectedValue, newValue);
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}
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inline int QBasicAtomicInt::fetchAndStoreRelaxed(int newValue)
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{
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return fetchAndStoreOrdered(newValue);
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}
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inline int QBasicAtomicInt::fetchAndStoreAcquire(int newValue)
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{
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return fetchAndStoreOrdered(newValue);
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}
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inline int QBasicAtomicInt::fetchAndStoreRelease(int newValue)
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{
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return fetchAndStoreOrdered(newValue);
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}
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inline int QBasicAtomicInt::fetchAndAddRelaxed(int valueToAdd)
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{
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return fetchAndAddOrdered(valueToAdd);
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}
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inline int QBasicAtomicInt::fetchAndAddAcquire(int valueToAdd)
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{
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return fetchAndAddOrdered(valueToAdd);
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}
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inline int QBasicAtomicInt::fetchAndAddRelease(int valueToAdd)
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{
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return fetchAndAddOrdered(valueToAdd);
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}
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////////////////////////////////////////////////////////////////////////////////////////////////////
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template <typename T>
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Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::testAndSetRelaxed(T *expectedValue, T *newValue)
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{
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return testAndSetOrdered(expectedValue, newValue);
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}
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template <typename T>
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Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::testAndSetAcquire(T *expectedValue, T *newValue)
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{
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return testAndSetOrdered(expectedValue, newValue);
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}
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template <typename T>
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Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::testAndSetRelease(T *expectedValue, T *newValue)
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{
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return testAndSetOrdered(expectedValue, newValue);
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}
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template <typename T>
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Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndStoreRelaxed(T *newValue)
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{
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return fetchAndStoreOrdered(newValue);
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}
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template <typename T>
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Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndStoreAcquire(T *newValue)
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{
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return fetchAndStoreOrdered(newValue);
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}
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template <typename T>
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Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndStoreRelease(T *newValue)
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{
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return fetchAndStoreOrdered(newValue);
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}
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template <typename T>
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Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndAddRelaxed(qptrdiff valueToAdd)
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{
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return fetchAndAddOrdered(valueToAdd);
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}
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template <typename T>
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Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndAddAcquire(qptrdiff valueToAdd)
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{
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return fetchAndAddOrdered(valueToAdd);
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}
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template <typename T>
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Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndAddRelease(qptrdiff valueToAdd)
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{
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return fetchAndAddOrdered(valueToAdd);
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}
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////////////////////////////////////////////////////////////////////////////////////////////////////
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// Cleanup
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#undef QT_INTERLOCKED_CONCAT_I
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#undef QT_INTERLOCKED_CONCAT
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#undef QT_INTERLOCKED_FUNCTION
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#undef QT_INTERLOCKED_PREFIX
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#undef QT_INTERLOCKED_NO_VOLATILE
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#undef QT_INTERLOCKED_VOLATILE
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#undef QT_INTERLOCKED_REMOVE_VOLATILE
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#undef QT_INTERLOCKED_INCREMENT
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#undef QT_INTERLOCKED_DECREMENT
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#undef QT_INTERLOCKED_COMPARE_EXCHANGE
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#undef QT_INTERLOCKED_EXCHANGE
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#undef QT_INTERLOCKED_EXCHANGE_ADD
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#undef QT_INTERLOCKED_COMPARE_EXCHANGE_POINTER
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#undef QT_INTERLOCKED_EXCHANGE_POINTER
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#undef QT_INTERLOCKED_EXCHANGE_ADD_POINTER
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QT_END_NAMESPACE
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QT_END_HEADER
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#endif // Q_CC_MSVC
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#endif // QATOMIC_WINDOWS_H
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