Mercurial > octave
view libgui/graphics/Logger.cc @ 31246:43a6be589387
doc: New documentation for memoization techniques (bug #60860)
vectorize.texi: New section on memoization
octave.texi: List new section
author | Arun Giridhar <arungiridhar@gmail.com> |
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date | Thu, 29 Sep 2022 20:31:52 -0400 |
parents | 48ef5fabe9b7 |
children | c6d54dd31a7e |
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//////////////////////////////////////////////////////////////////////// // // Copyright (C) 2011-2022 The Octave Project Developers // // See the file COPYRIGHT.md in the top-level directory of this // distribution or <https://octave.org/copyright/>. // // This file is part of Octave. // // Octave is free software: you can redistribute it and/or modify it // under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // // Octave is distributed in the hope that it will be useful, but // WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // // You should have received a copy of the GNU General Public License // along with Octave; see the file COPYING. If not, see // <https://www.gnu.org/licenses/>. // //////////////////////////////////////////////////////////////////////// #if defined (HAVE_CONFIG_H) # include "config.h" #endif #include <cstdio> #include <QMutex> #include <QMutexLocker> #include <QProcessEnvironment> #include "Logger.h" namespace octave { Logger *Logger::s_instance = nullptr; QMutex *Logger::s_mutex = nullptr; Logger::Logger (void) : m_debugEnabled (false) { QProcessEnvironment pe (QProcessEnvironment::systemEnvironment ()); if (pe.value ("QTHANDLES_DEBUG", "0") != "0") m_debugEnabled = true; } Logger::~Logger (void) { } Logger * Logger::instance (void) { if (! s_instance) { s_instance = new Logger (); s_mutex = new QMutex (); } return s_instance; } #define STATIC_LOGGER(fcn) \ void Logger::fcn (const char *fmt, ...) \ { \ QMutexLocker lock (s_mutex); \ va_list vl; \ va_start (vl, fmt); \ instance ()->fcn ## V (fmt, vl); \ va_end (vl); \ } STATIC_LOGGER (debug) void Logger::debugV (const char *fmt, va_list arg) { if (m_debugEnabled) { vfprintf (stderr, fmt, arg); fprintf (stderr, "\n"); } } }