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80 lines
2.6 KiB
C++
80 lines
2.6 KiB
C++
/*
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Copyright (c) 2007-2016 Contributors as noted in the AUTHORS file
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This file is part of libzmq, the ZeroMQ core engine in C++.
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libzmq is free software; you can redistribute it and/or modify it under
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the terms of the GNU Lesser General Public License (LGPL) as published
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by 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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As a special exception, the Contributors give you permission to link
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this library with independent modules to produce an executable,
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regardless of the license terms of these independent modules, and to
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copy and distribute the resulting executable under terms of your choice,
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provided that you also meet, for each linked independent module, the
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terms and conditions of the license of that module. An independent
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module is a module which is not derived from or based on this library.
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If you modify this library, you must extend this exception to your
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version of the library.
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libzmq is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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License for more details.
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You should have received a copy of the GNU Lesser 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 "precompiled.hpp"
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#include <stdlib.h>
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#include <string.h>
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#include "platform.hpp"
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#ifdef ZMQ_HAVE_WINDOWS
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#include "windows.hpp"
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#endif
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#include "raw_decoder.hpp"
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#include "err.hpp"
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zmq::raw_decoder_t::raw_decoder_t (size_t bufsize_) :
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allocator( bufsize_, 1 )
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{
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int rc = in_progress.init ();
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errno_assert (rc == 0);
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}
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zmq::raw_decoder_t::~raw_decoder_t ()
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{
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int rc = in_progress.close ();
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errno_assert (rc == 0);
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}
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void zmq::raw_decoder_t::get_buffer (unsigned char **data_, size_t *size_)
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{
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*data_ = allocator.allocate();
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*size_ = allocator.size();
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}
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int zmq::raw_decoder_t::decode (const uint8_t *data_, size_t size_,
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size_t &bytes_used_)
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{
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int rc = in_progress.init ((unsigned char*)data_, size_,
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shared_message_memory_allocator::call_dec_ref,
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allocator.buffer (),
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allocator.provide_content ());
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// if the buffer serves as memory for a zero-copy message, release it
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// and allocate a new buffer in get_buffer for the next decode
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if (in_progress.is_zcmsg ()) {
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allocator.advance_content();
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allocator.release();
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}
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errno_assert (rc != -1);
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bytes_used_ = size_;
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return 1;
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}
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