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/*
Copyright (C) 2005-2009 Michel de Boer <michel@twinklephone.com>
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
*/
#ifndef _LOG_H
#define _LOG_H
#include <string>
#include <fstream>
#include "threads/mutex.h"
#include "threads/sema.h"
#include "threads/thread.h"
using namespace std;
#define LOG_FILENAME "twinkle.log"
// Severity of a log message
enum t_log_severity {
LOG_INFO,
LOG_WARNING,
LOG_CRITICAL,
LOG_DEBUG
};
// Message class
enum t_log_class {
LOG_NORMAL,
LOG_SIP,
LOG_STUN,
LOG_MEMORY
};
class t_log {
private:
/** Maximum length of a logged string (bytes) */
static const string::size_type MAX_LEN_LOG_STRING = 1024;
string log_filename;
ofstream *log_stream;
// Mutex for exclusive acces to the log file
t_mutex mtx_log;
// Indicates if logging is disabled
bool log_disabled;
bool log_report_disabled;
// Indicates if the user should be informed about log updates
bool inform_user;
// Indicates if new data for the log viewer is available
t_semaphore *sema_logview;
// Thread for updating the log viewer
t_thread *thr_logview;
// Move the current log file to the .old log file
bool move_current_to_old(void);
public:
t_log();
~t_log();
// Write a report with header and footer
void write_report(const string &report, const string &func_name); // normal, info
void write_report(const string &report, const string &func_name,
t_log_class log_class, t_log_severity severity = LOG_INFO);
// Write header
// This locks the mtx_log. So you must call write footer to release
// the log again!
void write_header(const string &func_name); // class normal, severity info
void write_header(const string &func_name, t_log_class log_class,
t_log_severity severity = LOG_INFO);
// Write footer
// This unlocks the mtx_log.
void write_footer(void);
// Write raw data
void write_raw(const string &raw);
void write_raw(int raw);
void write_raw(unsigned int raw);
void write_raw(unsigned short raw);
void write_raw(unsigned long raw);
void write_raw(long raw);
void write_bool(bool raw);
// Write end of line
void write_endl(void);
// Return the full path name of the log file
string get_filename(void) const;
// Enable/disable user informs on updates
void enable_inform_user(bool on);
// Block till log information is available for log viewer
void wait_for_log(void);
};
extern t_log *log_file;
#endif
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