105 lines
2.1 KiB
C++
105 lines
2.1 KiB
C++
/*
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Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef ATOMIC_INCLUDED
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#define ATOMIC_INCLUDED
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#include "my_global.h"
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#include "my_atomic.h"
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namespace my_boost{
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template<typename TType> class atomic
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{
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public:
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atomic()
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{}
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atomic(const TType& value)
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{
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this->store(value);
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}
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TType load() const
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{
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return (TType)my_atomic_load64((volatile int64*)&m_value);
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}
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void store(TType value)
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{
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my_atomic_store64(&m_value, value);
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}
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bool compare_exchange_strong(TType& expected, TType destination)
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{
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int64 u64_expected= expected;
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bool res= my_atomic_cas64(&m_value, &u64_expected, destination);
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expected= u64_expected;
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return res;
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}
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TType operator ++()
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{
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return *this += 1;
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}
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TType operator ++(int)
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{
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return (TType)my_atomic_add64(&m_value, 1);
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}
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TType operator --()
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{
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return *this -= 1;
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}
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TType operator --(int)
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{
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return my_atomic_add64(&m_value, -1);
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}
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TType operator +=(TType value)
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{
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return my_atomic_add64(&m_value, value) + value;
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}
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TType operator -=(TType value)
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{
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return this->fetch_sub(value) - value;
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}
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TType fetch_sub(TType value)
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{
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return (TType)my_atomic_add64(&m_value, -(signed)value);
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}
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operator TType() const
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{
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return this->load();
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}
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void join();
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private:
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volatile int64 m_value;
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};
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typedef atomic<uint32> atomic_uint32_t;
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typedef atomic<int64> atomic_int64_t;
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typedef atomic<uint64> atomic_uint64_t;
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typedef atomic<bool> atomic_bool;
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}
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#endif
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