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/* <!-- copyright */
/*
* aria2 - The high speed download utility
*
* Copyright (C) 2012 Tatsuhiro Tsujikawa
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* In addition, as a special exception, the copyright holders give
* permission to link the code of portions of this program with the
* OpenSSL library under certain conditions as described in each
* individual source file, and distribute linked combinations
* including the two.
* You must obey the GNU General Public License in all respects
* for all of the code used other than OpenSSL. If you modify
* file(s) with this exception, you may extend this exception to your
* version of the file(s), but you are not obligated to do so. If you
* do not wish to do so, delete this exception statement from your
* version. If you delete this exception statement from all source
* files in the program, then also delete it here.
*/
/* copyright --> */
#include "SharedHandle.h"
namespace aria2 {
SharedCount::SharedCount():refCount_(new RefCount()) {}
SharedCount::SharedCount(const SharedCount& s):refCount_(s.refCount_)
{
refCount_->addRefCount();
}
SharedCount::~SharedCount()
{
refCount_->releaseRefCount();
if(refCount_->getWeakRefCount() == 0) {
delete refCount_;
}
}
bool SharedCount::reassign(const SharedCount& s)
{
s.refCount_->addRefCount();
refCount_->releaseRefCount();
if(refCount_->getWeakRefCount() == 0) {
delete refCount_;
refCount_ = s.refCount_;
return true;
}
size_t thisCount = refCount_->getStrongRefCount();
refCount_ = s.refCount_;
return thisCount == 0;
}
void SharedCount::swap(SharedCount& r)
{
std::swap(refCount_, r.refCount_);
}
WeakCount::WeakCount(const WeakRef& t):refCount_(new RefCount(t)) {}
WeakCount::WeakCount(const StrongRef& t):refCount_(new RefCount()) {}
WeakCount::WeakCount(const WeakCount& w):refCount_(w.refCount_)
{
refCount_->addWeakRefCount();
}
WeakCount::WeakCount(const SharedCount& s):refCount_(s.refCount_)
{
refCount_->addWeakRefCount();
}
WeakCount::~WeakCount()
{
refCount_->releaseWeakRefCount();
if(refCount_->getWeakRefCount() == 0) {
delete refCount_;
}
}
bool WeakCount::reassign(const SharedCount& s)
{
s.refCount_->addWeakRefCount();
refCount_->releaseWeakRefCount();
if(refCount_->getWeakRefCount() == 0) {
delete refCount_;
refCount_ = s.refCount_;
return true;
}
refCount_ = s.refCount_;
return false;
}
bool WeakCount::reassign(const WeakCount& s)
{
s.refCount_->addWeakRefCount();
refCount_->releaseWeakRefCount();
if(refCount_->getWeakRefCount() == 0) {
delete refCount_;
refCount_ = s.refCount_;
return true;
}
refCount_ = s.refCount_;
return false;
}
} // namespace aria2
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