/* Copyright (C) 2014 J.F.Dockes
* This program 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 2 of the License, or
* (at your option) any later version.
*
* This program 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 this program; if not, write to the
* Free Software Foundation, Inc.,
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
/* Copyright (C) 2006-2016 J.F.Dockes
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301 USA
*/
#ifndef _LOG_H_X_INCLUDED_
#define _LOG_H_X_INCLUDED_
#include <string.h>
#include <fstream>
#include <iostream>
#include <string>
#include <mutex>
#ifndef LOGGER_THREADSAFE
#define LOGGER_THREADSAFE 1
#endif
#if LOGGER_THREADSAFE
#include <mutex>
#endif
// Can't use the symbolic Logger::LLXX names in preproc. 6 is LLDEB1
#ifndef LOGGER_STATICVERBOSITY
#define LOGGER_STATICVERBOSITY 5
#endif
class Logger {
public:
/** Initialize logging to file name. Use "stderr" for stderr
output. Creates the singleton logger object */
static Logger *getTheLog(const std::string& fn);
bool reopen(const std::string& fn);
std::ostream& getstream() {
return m_tocerr ? std::cerr : m_stream;
}
enum LogLevel {LLNON=0, LLFAT=1, LLERR=2, LLINF=3, LLDEB=4,
LLDEB0=5, LLDEB1=6, LLDEB2=7};
void setLogLevel(LogLevel level) {
m_loglevel = level;
}
int getloglevel() {
return m_loglevel;
}
#if LOGGER_THREADSAFE
std::recursive_mutex& getmutex() {
return m_mutex;
}
#endif
private:
bool m_tocerr;
int m_loglevel;
std::string m_fn;
std::ofstream m_stream;
#if LOGGER_THREADSAFE
std::recursive_mutex m_mutex;
#endif
Logger(const std::string& fn);
Logger(const Logger &);
Logger& operator=(const Logger &);
};
#define LOGGER_PRT (Logger::getTheLog("")->getstream())
#if LOGGER_THREADSAFE
#define LOGGER_LOCK \
std::unique_lock<std::recursive_mutex> lock(Logger::getTheLog("")->getmutex())
#else
#define LOGGER_LOCK
#endif
#ifndef LOGGER_LOCAL_LOGINC
#define LOGGER_LOCAL_LOGINC 0
#endif
#define LOGGER_LEVEL (Logger::getTheLog("")->getloglevel() + \
LOGGER_LOCAL_LOGINC)
#define LOGGER_DOLOG(L,X) LOGGER_PRT << ":" << L << ":" << \
__FILE__ << ":" << __LINE__ << "::" << X \
<< std::flush
#if LOGGER_STATICVERBOSITY >= 7
#define LOGDEB2(X) { \
if (LOGGER_LEVEL >= Logger::LLDEB2) { \
LOGGER_LOCK; \
LOGGER_DOLOG(Logger::LLDEB2, X); \
} \
}
#else
#define LOGDEB2(X)
#endif
#if LOGGER_STATICVERBOSITY >= 6
#define LOGDEB1(X) { \
if (LOGGER_LEVEL >= Logger::LLDEB1) { \
LOGGER_LOCK; \
LOGGER_DOLOG(Logger::LLDEB1, X); \
} \
}
#else
#define LOGDEB1(X)
#endif
#if LOGGER_STATICVERBOSITY >= 5
#define LOGDEB0(X) { \
if (LOGGER_LEVEL >= Logger::LLDEB0) { \
LOGGER_LOCK; \
LOGGER_DOLOG(Logger::LLDEB0, X); \
} \
}
#else
#define LOGDEB0(X)
#endif
#if LOGGER_STATICVERBOSITY >= 4
#define LOGDEB(X) { \
if (LOGGER_LEVEL >= Logger::LLDEB) { \
LOGGER_LOCK; \
LOGGER_DOLOG(Logger::LLDEB, X); \
} \
}
#else
#define LOGDEB(X)
#endif
#if LOGGER_STATICVERBOSITY >= 3
#define LOGINF(X) { \
if (LOGGER_LEVEL >= Logger::LLINF) { \
LOGGER_LOCK; \
LOGGER_DOLOG(Logger::LLINF, X); \
} \
}
#else
#define LOGINF(X)
#endif
#define LOGINFO LOGINF
#if LOGGER_STATICVERBOSITY >= 2
#define LOGERR(X) { \
if (LOGGER_LEVEL >= Logger::LLERR) { \
LOGGER_LOCK; \
LOGGER_DOLOG(Logger::LLERR, X); \
} \
}
#else
#define LOGERR(X)
#endif
#if LOGGER_STATICVERBOSITY >= 1
#define LOGFAT(X) { \
if (LOGGER_LEVEL >= Logger::LLFAT) { \
LOGGER_LOCK; \
LOGGER_DOLOG(Logger::LLFAT, X); \
} \
}
#else
#define LOGFAT(X)
#endif
#define LOGFATAL LOGFAT
#if (_POSIX_C_SOURCE >= 200112L) && ! _GNU_SOURCE
#define LOGSYSERR(who, what, arg) { \
char buf[200]; buf[0] = 0; strerror_r(errno, buf, 200); \
LOGERR(who << ": " << what << "(" << arg << "): errno " << errno << \
": " << buf << std::endl); \
}
#else
#define LOGSYSERR(who, what, arg) { \
char buf[200]; buf[0] = 0; \
LOGERR(who << ": " << what << "(" << arg << "): errno " << errno << \
": " << strerror_r(errno, buf, 200) << std::endl); \
}
#endif
#endif /* _LOG_H_X_INCLUDED_ */