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Remove the SH atomic implementation...

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... but keep SH-4a, which provides a more efficient implementation. The
implementation removed here was very similar to the code removed by
commit dc5388e79b71d796c1207681235cf007c39810bd.

Support for SH can be provided by qatomic_gcc.h, or re-added in the
future if absolutely necessary.

Change-Id: Ic38b57c9513fc9c3c99ba7e102780a3939b735b9
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
This commit is contained in:
Bradley T. Hughes 2012-02-10 12:18:41 +01:00 committed by Qt by Nokia
parent 48e48f2597
commit c4759d19f8
5 changed files with 0 additions and 409 deletions
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1
src/corelib/arch/arch.pri
View File

@ -26,7 +26,6 @@ integrity:HEADERS += arch/qatomic_integrity.h
arch/qatomic_mips.h \
arch/qatomic_s390.h \
arch/qatomic_x86_64.h \
arch/qatomic_sh.h \
arch/qatomic_sh4a.h \
arch/qatomic_gcc.h \
arch/qatomic_cxx11.h

2
src/corelib/arch/qatomic_arch.h
View File

@ -64,8 +64,6 @@ QT_BEGIN_HEADER
# include "QtCore/qatomic_s390.h"
#elif defined(QT_ARCH_SPARC)
# include "QtCore/qatomic_sparc.h"
#elif defined(QT_ARCH_SH)
# include "QtCore/qatomic_sh.h"
#elif defined(QT_ARCH_SH4A)
# include "QtCore/qatomic_sh4a.h"
#else

330
src/corelib/arch/qatomic_sh.h
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@ -1,330 +0,0 @@
/****************************************************************************
**
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/
**
** This file is part of the QtCore module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** This file may be used under the terms of the GNU Lesser General Public
** License version 2.1 as published by the Free Software Foundation and
** appearing in the file LICENSE.LGPL included in the packaging of this
** file. Please review the following information to ensure the GNU Lesser
** General Public License version 2.1 requirements will be met:
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU General
** Public License version 3.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of this
** file. Please review the following information to ensure the GNU General
** Public License version 3.0 requirements will be met:
** http://www.gnu.org/copyleft/gpl.html.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QATOMIC_SH_H
#define QATOMIC_SH_H
QT_BEGIN_HEADER
QT_BEGIN_NAMESPACE
#define Q_ATOMIC_INT_REFERENCE_COUNTING_IS_NOT_NATIVE
inline bool QBasicAtomicInt::isReferenceCountingNative()
{ return false; }
inline bool QBasicAtomicInt::isReferenceCountingWaitFree()
{ return false; }
#define Q_ATOMIC_INT_TEST_AND_SET_IS_NOT_NATIVE
inline bool QBasicAtomicInt::isTestAndSetNative()
{ return false; }
inline bool QBasicAtomicInt::isTestAndSetWaitFree()
{ return false; }
#define Q_ATOMIC_INT_FETCH_AND_STORE_IS_NOT_NATIVE
inline bool QBasicAtomicInt::isFetchAndStoreNative()
{ return false; }
inline bool QBasicAtomicInt::isFetchAndStoreWaitFree()
{ return false; }
#define Q_ATOMIC_INT_FETCH_AND_ADD_IS_NOT_NATIVE
inline bool QBasicAtomicInt::isFetchAndAddNative()
{ return false; }
inline bool QBasicAtomicInt::isFetchAndAddWaitFree()
{ return false; }
#define Q_ATOMIC_POINTER_TEST_AND_SET_IS_NOT_NATIVE
template <typename T>
Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::isTestAndSetNative()
{ return false; }
template <typename T>
Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::isTestAndSetWaitFree()
{ return false; }
#define Q_ATOMIC_POINTER_FETCH_AND_STORE_IS_NOT_NATIVE
template <typename T>
Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::isFetchAndStoreNative()
{ return false; }
template <typename T>
Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::isFetchAndStoreWaitFree()
{ return false; }
#define Q_ATOMIC_POINTER_FETCH_AND_ADD_IS_NOT_NATIVE
template <typename T>
Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::isFetchAndAddNative()
{ return false; }
template <typename T>
Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::isFetchAndAddWaitFree()
{ return false; }
extern Q_CORE_EXPORT volatile char qt_atomic_lock;
Q_CORE_EXPORT void qt_atomic_yield(int *count);
inline int qt_atomic_tasb(volatile char *ptr)
{
register int ret;
asm volatile("tas.b @%2\n"
"movt %0"
: "=&r"(ret), "=m"(*ptr)
: "r"(ptr)
: "cc", "memory");
return ret;
}
// Reference counting
inline bool QBasicAtomicInt::ref()
{
int count = 0;
while (qt_atomic_tasb(&qt_atomic_lock) == 0)
qt_atomic_yield(&count);
int originalValue = _q_value++;
qt_atomic_lock = 0;
return originalValue != -1;
}
inline bool QBasicAtomicInt::deref()
{
int count = 0;
while (qt_atomic_tasb(&qt_atomic_lock) == 0)
qt_atomic_yield(&count);
int originalValue = _q_value--;
qt_atomic_lock = 0;
return originalValue != 1;
}
// Test and set for integers
inline bool QBasicAtomicInt::testAndSetOrdered(int expectedValue, int newValue)
{
bool returnValue = false;
int count = 0;
while (qt_atomic_tasb(&qt_atomic_lock) == 0)
qt_atomic_yield(&count);
if (_q_value == expectedValue) {
_q_value = newValue;
returnValue = true;
}
qt_atomic_lock = 0;
return returnValue;
}
inline bool QBasicAtomicInt::testAndSetRelaxed(int expectedValue, int newValue)
{
return testAndSetOrdered(expectedValue, newValue);
}
inline bool QBasicAtomicInt::testAndSetAcquire(int expectedValue, int newValue)
{
return testAndSetOrdered(expectedValue, newValue);
}
inline bool QBasicAtomicInt::testAndSetRelease(int expectedValue, int newValue)
{
return testAndSetOrdered(expectedValue, newValue);
}
// Fetch and store for integers
inline int QBasicAtomicInt::fetchAndStoreOrdered(int newValue)
{
int count = 0;
while (qt_atomic_tasb(&qt_atomic_lock) == 0)
qt_atomic_yield(&count);
int originalValue = _q_value;
_q_value = newValue;
qt_atomic_lock = 0;
return originalValue;
}
inline int QBasicAtomicInt::fetchAndStoreRelaxed(int newValue)
{
return fetchAndStoreOrdered(newValue);
}
inline int QBasicAtomicInt::fetchAndStoreAcquire(int newValue)
{
return fetchAndStoreOrdered(newValue);
}
inline int QBasicAtomicInt::fetchAndStoreRelease(int newValue)
{
return fetchAndStoreOrdered(newValue);
}
// Fetch and add for integers
inline int QBasicAtomicInt::fetchAndAddOrdered(int valueToAdd)
{
int count = 0;
while (qt_atomic_tasb(&qt_atomic_lock) == 0)
qt_atomic_yield(&count);
int originalValue = _q_value;
_q_value += valueToAdd;
qt_atomic_lock = 0;
return originalValue;
}
inline int QBasicAtomicInt::fetchAndAddRelaxed(int valueToAdd)
{
return fetchAndAddOrdered(valueToAdd);
}
inline int QBasicAtomicInt::fetchAndAddAcquire(int valueToAdd)
{
return fetchAndAddOrdered(valueToAdd);
}
inline int QBasicAtomicInt::fetchAndAddRelease(int valueToAdd)
{
return fetchAndAddOrdered(valueToAdd);
}
// Test and set for pointers
template <typename T>
Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::testAndSetOrdered(T *expectedValue, T *newValue)
{
bool returnValue = false;
int count = 0;
while (qt_atomic_tasb(&qt_atomic_lock) == 0)
qt_atomic_yield(&count);
if (_q_value == expectedValue) {
_q_value = newValue;
returnValue = true;
}
qt_atomic_lock = 0;
return returnValue;
}
template <typename T>
Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::testAndSetRelaxed(T *expectedValue, T *newValue)
{
return testAndSetOrdered(expectedValue, newValue);
}
template <typename T>
Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::testAndSetAcquire(T *expectedValue, T *newValue)
{
return testAndSetOrdered(expectedValue, newValue);
}
template <typename T>
Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::testAndSetRelease(T *expectedValue, T *newValue)
{
return testAndSetOrdered(expectedValue, newValue);
}
// Fetch and store for pointers
template <typename T>
Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndStoreOrdered(T *newValue)
{
int count = 0;
while (qt_atomic_tasb(&qt_atomic_lock) == 0)
qt_atomic_yield(&count);
T *originalValue = _q_value;
_q_value = newValue;
qt_atomic_lock = 0;
return originalValue;
}
template <typename T>
Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndStoreRelaxed(T *newValue)
{
return fetchAndStoreOrdered(newValue);
}
template <typename T>
Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndStoreAcquire(T *newValue)
{
return fetchAndStoreOrdered(newValue);
}
template <typename T>
Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndStoreRelease(T *newValue)
{
return fetchAndStoreOrdered(newValue);
}
// Fetch and add for pointers
template <typename T>
Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndAddOrdered(qptrdiff valueToAdd)
{
int count = 0;
while (qt_atomic_tasb(&qt_atomic_lock) == 0)
qt_atomic_yield(&count);
T *originalValue = (_q_value);
_q_value += valueToAdd;
qt_atomic_lock = 0;
return originalValue;
}
template <typename T>
Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndAddRelaxed(qptrdiff valueToAdd)
{
return fetchAndAddOrdered(valueToAdd);
}
template <typename T>
Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndAddAcquire(qptrdiff valueToAdd)
{
return fetchAndAddOrdered(valueToAdd);
}
template <typename T>
Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndAddRelease(qptrdiff valueToAdd)
{
return fetchAndAddOrdered(valueToAdd);
}
QT_END_NAMESPACE
QT_END_HEADER
#endif // QATOMIC_SH_H

4
src/corelib/arch/sh/arch.pri
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@ -1,4 +0,0 @@
#
# SH (Renesas SuperH) architecture
#
SOURCES += $$QT_ARCH_CPP/qatomic_sh.cpp

72
src/corelib/arch/sh/qatomic_sh.cpp
View File

@ -1,72 +0,0 @@
/****************************************************************************
**
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/
**
** This file is part of the QtCore module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** This file may be used under the terms of the GNU Lesser General Public
** License version 2.1 as published by the Free Software Foundation and
** appearing in the file LICENSE.LGPL included in the packaging of this
** file. Please review the following information to ensure the GNU Lesser
** General Public License version 2.1 requirements will be met:
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU General
** Public License version 3.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of this
** file. Please review the following information to ensure the GNU General
** Public License version 3.0 requirements will be met:
** http://www.gnu.org/copyleft/gpl.html.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include <QtCore/qglobal.h>
#include <unistd.h>
#ifdef _POSIX_PRIORITY_SCHEDULING
# include <sched.h>
#endif
#include <time.h>
QT_BEGIN_NAMESPACE
QT_USE_NAMESPACE
Q_CORE_EXPORT volatile char qt_atomic_lock = 0;
Q_CORE_EXPORT void qt_atomic_yield(int *count)
{
#ifdef _POSIX_PRIORITY_SCHEDULING
if((*count)++ < 50) {
sched_yield();
} else
#endif
{
struct timespec tm;
tm.tv_sec = 0;
tm.tv_nsec = 2000001;
nanosleep(&tm, NULL);
*count = 0;
}
}
QT_END_NAMESPACE