mirror of
https://github.com/pocoproject/poco.git
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d75e68c027
windows build only
213 lines
4.1 KiB
C++
213 lines
4.1 KiB
C++
//
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// AtomicCounter.cpp
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//
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// $Id: //poco/1.4/Foundation/src/AtomicCounter.cpp#2 $
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//
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// Library: Foundation
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// Package: Core
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// Module: AtomicCounter
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//
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// Copyright (c) 2009, Applied Informatics Software Engineering GmbH.
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// and Contributors.
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//
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// Permission is hereby granted, free of charge, to any person or organization
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// obtaining a copy of the software and accompanying documentation covered by
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// this license (the "Software") to use, reproduce, display, distribute,
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// execute, and transmit the Software, and to prepare derivative works of the
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// Software, and to permit third-parties to whom the Software is furnished to
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// do so, all subject to the following:
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//
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// The copyright notices in the Software and this entire statement, including
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// the above license grant, this restriction and the following disclaimer,
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// must be included in all copies of the Software, in whole or in part, and
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// all derivative works of the Software, unless such copies or derivative
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// works are solely in the form of machine-executable object code generated by
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// a source language processor.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
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// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
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// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
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// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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// DEALINGS IN THE SOFTWARE.
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//
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#include "Poco/AtomicCounter.h"
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namespace Poco {
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#if POCO_OS == POCO_OS_WINDOWS_NT
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//
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// Windows
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//
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AtomicCounter::AtomicCounter():
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_counter(0)
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{
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}
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AtomicCounter::AtomicCounter(AtomicCounter::ValueType initialValue):
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_counter(initialValue)
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{
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}
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AtomicCounter::AtomicCounter(const AtomicCounter& counter):
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_counter(counter.value())
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{
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}
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AtomicCounter::~AtomicCounter()
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{
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}
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AtomicCounter& AtomicCounter::operator = (const AtomicCounter& counter)
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{
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InterlockedExchange(&_counter, counter.value());
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return *this;
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}
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AtomicCounter& AtomicCounter::operator = (AtomicCounter::ValueType value)
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{
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InterlockedExchange(&_counter, value);
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return *this;
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}
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#elif POCO_OS == POCO_OS_MAC_OS_X
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//
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// Mac OS X
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//
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AtomicCounter::AtomicCounter():
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_counter(0)
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{
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}
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AtomicCounter::AtomicCounter(AtomicCounter::ValueType initialValue):
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_counter(initialValue)
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{
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}
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AtomicCounter::AtomicCounter(const AtomicCounter& counter):
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_counter(counter.value())
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{
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}
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AtomicCounter::~AtomicCounter()
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{
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}
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AtomicCounter& AtomicCounter::operator = (const AtomicCounter& counter)
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{
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_counter = counter.value();
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return *this;
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}
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AtomicCounter& AtomicCounter::operator = (AtomicCounter::ValueType value)
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{
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_counter = value;
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return *this;
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}
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#elif defined(POCO_HAVE_GCC_ATOMICS)
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//
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// GCC 4.1+ atomic builtins.
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//
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AtomicCounter::AtomicCounter():
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_counter(0)
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{
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}
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AtomicCounter::AtomicCounter(AtomicCounter::ValueType initialValue):
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_counter(initialValue)
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{
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}
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AtomicCounter::AtomicCounter(const AtomicCounter& counter):
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_counter(counter.value())
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{
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}
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AtomicCounter::~AtomicCounter()
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{
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}
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AtomicCounter& AtomicCounter::operator = (const AtomicCounter& counter)
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{
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__sync_lock_test_and_set(&_counter, counter.value());
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return *this;
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}
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AtomicCounter& AtomicCounter::operator = (AtomicCounter::ValueType value)
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{
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__sync_lock_test_and_set(&_counter, value);
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return *this;
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}
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#else
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//
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// Generic implementation based on FastMutex
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//
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AtomicCounter::AtomicCounter()
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{
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_counter.value = 0;
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}
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AtomicCounter::AtomicCounter(AtomicCounter::ValueType initialValue)
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{
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_counter.value = initialValue;
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}
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AtomicCounter::AtomicCounter(const AtomicCounter& counter)
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{
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_counter.value = counter.value();
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}
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AtomicCounter::~AtomicCounter()
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{
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}
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AtomicCounter& AtomicCounter::operator = (const AtomicCounter& counter)
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{
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FastMutex::ScopedLock lock(_counter.mutex);
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_counter.value = counter.value();
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return *this;
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}
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AtomicCounter& AtomicCounter::operator = (AtomicCounter::ValueType value)
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{
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FastMutex::ScopedLock lock(_counter.mutex);
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_counter.value = value;
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return *this;
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}
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#endif // POCO_OS
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} // namespace Poco
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