mirror of
https://github.com/NAStools/zerotierone.git
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101 lines
1.9 KiB
C++
101 lines
1.9 KiB
C++
/*
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* ZeroTier One - Network Virtualization Everywhere
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* Copyright (C) 2011-2016 ZeroTier, Inc. https://www.zerotier.com/
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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 3 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, see <http://www.gnu.org/licenses/>.
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*/
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#include "Constants.hpp"
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#include "DeferredPackets.hpp"
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#include "IncomingPacket.hpp"
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#include "RuntimeEnvironment.hpp"
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#include "Node.hpp"
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namespace ZeroTier {
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DeferredPackets::DeferredPackets(const RuntimeEnvironment *renv) :
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RR(renv),
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_waiting(0),
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_die(false)
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{
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}
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DeferredPackets::~DeferredPackets()
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{
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_q_m.lock();
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_die = true;
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_q_m.unlock();
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for(;;) {
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_q_s.post();
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_q_m.lock();
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if (_waiting <= 0) {
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_q_m.unlock();
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break;
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} else {
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_q_m.unlock();
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}
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}
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}
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bool DeferredPackets::enqueue(IncomingPacket *pkt)
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{
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{
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Mutex::Lock _l(_q_m);
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if (_q.size() >= ZT_DEFFEREDPACKETS_MAX)
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return false;
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_q.push_back(*pkt);
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}
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_q_s.post();
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return true;
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}
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int DeferredPackets::process()
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{
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std::list<IncomingPacket> pkt;
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_q_m.lock();
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if (_die) {
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_q_m.unlock();
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return -1;
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}
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while (_q.empty()) {
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++_waiting;
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_q_m.unlock();
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_q_s.wait();
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_q_m.lock();
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--_waiting;
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if (_die) {
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_q_m.unlock();
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return -1;
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}
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}
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// Move item from _q list to a dummy list here to avoid copying packet
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pkt.splice(pkt.end(),_q,_q.begin());
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_q_m.unlock();
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try {
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pkt.front().tryDecode(RR,true);
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} catch ( ... ) {} // drop invalids
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return 1;
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}
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} // namespace ZeroTier
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