97 lines
2.3 KiB
C++
97 lines
2.3 KiB
C++
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/*
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; Project: Open Vehicle Monitor System
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; Date: 14th March 2017
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;
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; Changes:
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; 1.0 Initial release
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;
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; (C) 2011 Michael Stegen / Stegen Electronics
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; (C) 2011-2017 Mark Webb-Johnson
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; (C) 2011 Sonny Chen @ EPRO/DX
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;
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; Permission is hereby granted, free of charge, to any person obtaining a copy
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; of this software and associated documentation files (the "Software"), to deal
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; in the Software without restriction, including without limitation the rights
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; to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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; copies of the Software, and to permit persons to whom the Software is
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; furnished to do so, subject to the following conditions:
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;
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; The above copyright notice and this permission notice shall be included in
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; all copies or substantial portions of the Software.
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;
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; THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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; IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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; FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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; AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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; LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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; OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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; THE SOFTWARE.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <ovms_log.h>
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#include "log_buffers.h"
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LogBuffers::LogBuffers() : m_refcount(0)
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{
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}
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LogBuffers::~LogBuffers()
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{
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// Free all the buffers in the list.
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for (iterator itr = begin(); itr != end(); ++itr)
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{
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free(*itr);
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}
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}
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int LogBuffers::append(const char* fmt, va_list args)
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{
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char *buffer;
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int ret = vasprintf(&buffer, fmt, args);
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if (ret >= 0)
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append(buffer);
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return ret;
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}
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void LogBuffers::append(char* buffer)
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{
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if (empty())
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{
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push_front(buffer);
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}
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else
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{
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iterator before = begin(), after;
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while (true)
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{
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after = before;
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++after;
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if (after == end())
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break;
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before = after;
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}
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insert_after(before, buffer);
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}
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}
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void LogBuffers::set(int count)
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{
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m_refcount = count;
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}
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void LogBuffers::release()
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{
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int before = std::atomic_fetch_add(&m_refcount, -1);
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if (before == 1)
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delete this;
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}
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bool LogBuffers::last()
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{
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return m_refcount == 1;
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}
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