mirror of
https://github.com/OpenVPN/openvpn3.git
synced 2024-09-20 12:12:15 +02:00
35ac9f6229
size_t and ssize_t.
97 lines
2.1 KiB
C++
97 lines
2.1 KiB
C++
// OpenVPN -- An application to securely tunnel IP networks
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// over a single port, with support for SSL/TLS-based
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// session authentication and key exchange,
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// packet encryption, packet authentication, and
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// packet compression.
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//
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// Copyright (C) 2012-2015 OpenVPN Technologies, Inc.
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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 Affero General Public License Version 3
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// as published by the Free Software Foundation.
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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 Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program in the COPYING file.
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// If not, see <http://www.gnu.org/licenses/>.
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// A queue of buffers, implemented as std::deque<BufferPtr>.
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#ifndef OPENVPN_BUFFER_MEMQ_H
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#define OPENVPN_BUFFER_MEMQ_H
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#include <deque>
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#include <openvpn/common/size.hpp>
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#include <openvpn/buffer/buffer.hpp>
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namespace openvpn {
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class MemQBase
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{
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public:
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MemQBase() : length(0) {}
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size_t size() const
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{
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return q.size();
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}
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bool empty() const
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{
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return q.empty();
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}
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size_t total_length() const { return length; }
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void clear()
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{
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while (!q.empty())
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q.pop_back();
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length = 0;
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}
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void write_buf(const BufferPtr& bp)
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{
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q.push_back(bp);
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length += bp->size();
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}
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BufferPtr read_buf()
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{
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BufferPtr ret = q.front();
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q.pop_front();
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length -= ret->size();
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return ret;
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}
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BufferPtr& peek()
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{
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return q.front();
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}
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void pop()
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{
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length -= q.front()->size();
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q.pop_front();
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}
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void resize(const size_t cap)
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{
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q.resize(cap);
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}
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protected:
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typedef std::deque<BufferPtr> q_type;
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size_t length;
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q_type q;
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};
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} // namespace openvpn
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#endif // OPENVPN_BUFFER_MEMQ_H
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