llfixedbuffer.cpp
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上传日期:2021-03-01
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- /**
- * @file llfixedbuffer.cpp
- *
- * $LicenseInfo:firstyear=2001&license=viewergpl$
- *
- * Copyright (c) 2001-2010, Linden Research, Inc.
- *
- * Second Life Viewer Source Code
- * The source code in this file ("Source Code") is provided by Linden Lab
- * to you under the terms of the GNU General Public License, version 2.0
- * ("GPL"), unless you have obtained a separate licensing agreement
- * ("Other License"), formally executed by you and Linden Lab. Terms of
- * the GPL can be found in doc/GPL-license.txt in this distribution, or
- * online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
- *
- * There are special exceptions to the terms and conditions of the GPL as
- * it is applied to this Source Code. View the full text of the exception
- * in the file doc/FLOSS-exception.txt in this software distribution, or
- * online at
- * http://secondlifegrid.net/programs/open_source/licensing/flossexception
- *
- * By copying, modifying or distributing this software, you acknowledge
- * that you have read and understood your obligations described above,
- * and agree to abide by those obligations.
- *
- * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
- * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
- * COMPLETENESS OR PERFORMANCE.
- * $/LicenseInfo$
- */
- #include "linden_common.h"
- #include "llfixedbuffer.h"
- ////////////////////////////////////////////////////////////////////////////
- LLFixedBuffer::LLFixedBuffer(const U32 max_lines)
- : LLLineBuffer(),
- mMaxLines(max_lines),
- mMutex(NULL)
- {
- mTimer.reset();
- }
- LLFixedBuffer::~LLFixedBuffer()
- {
- clear();
- }
- void LLFixedBuffer::clear()
- {
- mMutex.lock() ;
- mLines.clear();
- mAddTimes.clear();
- mLineLengths.clear();
- mMutex.unlock() ;
- mTimer.reset();
- }
- void LLFixedBuffer::addLine(const std::string& utf8line)
- {
- LLWString wstring = utf8str_to_wstring(utf8line);
- addWLine(wstring);
- }
- void LLFixedBuffer::addWLine(const LLWString& line)
- {
- if (line.empty())
- {
- return;
- }
- removeExtraLines();
- mMutex.lock() ;
- mLines.push_back(line);
- mLineLengths.push_back((S32)line.length());
- mAddTimes.push_back(mTimer.getElapsedTimeF32());
- mMutex.unlock() ;
- }
- void LLFixedBuffer::setMaxLines(S32 max_lines)
- {
- mMaxLines = max_lines;
- removeExtraLines();
- }
- void LLFixedBuffer::removeExtraLines()
- {
- mMutex.lock() ;
- while ((S32)mLines.size() > llmax((S32)0, (S32)(mMaxLines - 1)))
- {
- mLines.pop_front();
- mAddTimes.pop_front();
- mLineLengths.pop_front();
- }
- mMutex.unlock() ;
- }