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