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/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */
/*
Sonic Visualiser
An audio file viewer and annotation editor.
Centre for Digital Music, Queen Mary, University of London.
This file copyright 2010-2011 Chris Cannam and QMUL.
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. See the file
COPYING included with this distribution for more information.
*/
#ifndef SV_DEBUG_H
#define SV_DEBUG_H
#include <QDebug>
#include <QTextStream>
#include <QElapsedTimer>
#include <QThread>
#include "RealTime.h"
#include <string>
#include <iostream>
#include <fstream>
class QString;
class QUrl;
QDebug &operator<<(QDebug &, const std::string &);
std::ostream &operator<<(std::ostream &, const QString &);
std::ostream &operator<<(std::ostream &, const QUrl &);
class SVDebug {
public:
SVDebug();
~SVDebug();
template <typename T>
SVDebug &operator<<(const T &t) {
if (m_silenced) return *this;
if (m_ok) {
if (m_eol) {
m_stream << m_prefix << "/"
<< (uint64_t)QThread::currentThreadId() << ":"
<< m_timer.elapsed() << ": ";
}
m_stream << t;
m_eol = false;
}
return *this;
}
SVDebug &operator<<(QTextStreamFunction) {
if (m_silenced) return *this;
m_stream << std::endl;
m_eol = true;
return *this;
}
static void silence() { m_silenced = true; }
static void installQtMessageHandler();
static void restoreQtMessageHandler();
private:
std::fstream m_stream;
char *m_prefix;
bool m_ok;
bool m_eol;
QElapsedTimer m_timer;
static QtMessageHandler m_formerQtMessageHandler;
static bool m_silenced;
};
class SVCerr {
public:
SVCerr(SVDebug &d) : m_d(d) { }
template <typename T>
inline SVCerr &operator<<(const T &t) {
if (m_silenced) return *this;
m_d << t;
std::cerr << t;
return *this;
}
inline SVCerr &operator<<(QTextStreamFunction f) {
if (m_silenced) return *this;
m_d << f;
std::cerr << std::endl;
return *this;
}
static void silence() { m_silenced = true; }
static void installQtMessageHandler();
static void restoreQtMessageHandler();
private:
SVDebug &m_d;
static QtMessageHandler m_formerQtMessageHandler;
static bool m_silenced;
};
extern SVDebug &getSVDebug();
extern SVCerr &getSVCerr();
using Qt::endl;
// Writes to debug log only
#define SVDEBUG getSVDebug()
// Writes to both SVDEBUG and cerr
#define SVCERR getSVCerr()
class FunctionLogger
{
public:
FunctionLogger(const char *name);
~FunctionLogger();
private:
const char *m_name;
};
#ifdef NDEBUG
#define FUNCLOG
#else
#define FUNCLOG FunctionLogger functionLogger(__FUNCTION__)
#endif
#endif /* !_DEBUG_H_ */
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