/*
* Copyright (c) 1999, 2019, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*
*/
#ifndef OS_CPU_SOLARIS_X86_ATOMIC_SOLARIS_X86_HPP
#define OS_CPU_SOLARIS_X86_ATOMIC_SOLARIS_X86_HPP
// For Sun Studio - implementation is in solaris_x86_64.il.
extern "C" {
int32_t _Atomic_add(int32_t add_value, volatile int32_t* dest);
int64_t _Atomic_add_long(int64_t add_value, volatile int64_t* dest);
int32_t _Atomic_xchg(int32_t exchange_value, volatile int32_t* dest);
int8_t _Atomic_cmpxchg_byte(int8_t exchange_value, volatile int8_t* dest,
int8_t compare_value);
int32_t _Atomic_cmpxchg(int32_t exchange_value, volatile int32_t* dest,
int32_t compare_value);
int64_t _Atomic_cmpxchg_long(int64_t exchange_value, volatile int64_t* dest,
int64_t compare_value);
}
template<size_t byte_size>
struct Atomic::PlatformAdd
: Atomic::AddAndFetch<Atomic::PlatformAdd<byte_size> >
{
template<typename D, typename I>
D add_and_fetch(D volatile* dest, I add_value, atomic_memory_order order) const;
};
// Not using add_using_helper; see comment for cmpxchg.
template<>
template<typename D, typename I>
inline D Atomic::PlatformAdd<4>::add_and_fetch(D volatile* dest, I add_value,
atomic_memory_order order) const {
STATIC_ASSERT(4 == sizeof(I));
STATIC_ASSERT(4 == sizeof(D));
return PrimitiveConversions::cast<D>(
_Atomic_add(PrimitiveConversions::cast<int32_t>(add_value),
reinterpret_cast<int32_t volatile*>(dest)));
}
// Not using add_using_helper; see comment for cmpxchg.
template<>
template<typename D, typename I>
inline D Atomic::PlatformAdd<8>::add_and_fetch(D volatile* dest, I add_value,
atomic_memory_order order) const {
STATIC_ASSERT(8 == sizeof(I));
STATIC_ASSERT(8 == sizeof(D));
return PrimitiveConversions::cast<D>(
_Atomic_add_long(PrimitiveConversions::cast<int64_t>(add_value),
reinterpret_cast<int64_t volatile*>(dest)));
}
template<>
template<typename T>
inline T Atomic::PlatformXchg<4>::operator()(T volatile* dest,
T exchange_value,
atomic_memory_order order) const {
STATIC_ASSERT(4 == sizeof(T));
return PrimitiveConversions::cast<T>(
_Atomic_xchg(PrimitiveConversions::cast<int32_t>(exchange_value),
reinterpret_cast<int32_t volatile*>(dest)));
}
extern "C" int64_t _Atomic_xchg_long(int64_t exchange_value, volatile int64_t* dest);
template<>
template<typename T>
inline T Atomic::PlatformXchg<8>::operator()(T volatile* dest,
T exchange_value,
atomic_memory_order order) const {
STATIC_ASSERT(8 == sizeof(T));
return PrimitiveConversions::cast<T>(
_Atomic_xchg_long(PrimitiveConversions::cast<int64_t>(exchange_value),
reinterpret_cast<int64_t volatile*>(dest)));
}
// Not using cmpxchg_using_helper here, because some configurations of
// Solaris compiler don't deal well with passing a "defined in .il"
// function as an argument. We *should* switch to using gcc-style
// inline assembly, but attempting to do so with Studio 12.4 ran into
// segfaults.
template<>
template<typename T>
inline T Atomic::PlatformCmpxchg<1>::operator()(T volatile* dest,
T compare_value,
T exchange_value,
atomic_memory_order order) const {
STATIC_ASSERT(1 == sizeof(T));
return PrimitiveConversions::cast<T>(
_Atomic_cmpxchg_byte(PrimitiveConversions::cast<int8_t>(exchange_value),
reinterpret_cast<int8_t volatile*>(dest),
PrimitiveConversions::cast<int8_t>(compare_value)));
}
template<>
template<typename T>
inline T Atomic::PlatformCmpxchg<4>::operator()(T volatile* dest,
T compare_value,
T exchange_value,
atomic_memory_order order) const {
STATIC_ASSERT(4 == sizeof(T));
return PrimitiveConversions::cast<T>(
_Atomic_cmpxchg(PrimitiveConversions::cast<int32_t>(exchange_value),
reinterpret_cast<int32_t volatile*>(dest),
PrimitiveConversions::cast<int32_t>(compare_value)));
}
template<>
template<typename T>
/**代码未完, 请加载全部代码(NowJava.com).**/