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/*
* Copyright (C) 2006-2015 Paul Davis <paul@linuxaudiosystems.com>
* Copyright (C) 2009-2012 Carl Hetherington <carl@carlh.net>
* Copyright (C) 2009 David Robillard <d@drobilla.net>
*
* 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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef __ardour_cycle_timer_h__
#define __ardour_cycle_timer_h__
#include <string>
#include <iostream>
#include <cstdlib>
#include "ardour/libardour_visibility.h"
#include "ardour/cycles.h"
#include "ardour/debug.h"
float get_mhz ();
class LIBARDOUR_API CycleTimer {
private:
static float cycles_per_usec;
#ifndef NDEBUG
cycles_t _entry;
cycles_t _exit;
std::string _name;
#endif
public:
CycleTimer(const std::string& name) {
#ifndef NDEBUG
if (DEBUG_ENABLED (PBD::DEBUG::CycleTimers)) {
_name = name;
if (cycles_per_usec == 0) {
cycles_per_usec = get_mhz ();
}
_entry = get_cycles();
}
#else
(void) name;
#endif
}
~CycleTimer() {
#ifndef NDEBUG
if (DEBUG_ENABLED (PBD::DEBUG::CycleTimers)) {
_exit = get_cycles();
std::cerr << _name << ": " << (float) (_exit - _entry) / cycles_per_usec << " (" << _entry << ", " << _exit << ')' << std::endl;
}
#endif
}
};
class LIBARDOUR_API StoringTimer
{
public:
StoringTimer (int);
void ref ();
void check (int);
#ifndef NDEBUG
void dump (std::string const &);
#endif
private:
cycles_t _current_ref;
int* _point;
cycles_t* _value;
cycles_t* _ref;
int _points;
int _max_points;
};
#ifdef PT_TIMING
extern StoringTimer ST;
#define PT_TIMING_REF ST.ref();
#define PT_TIMING_CHECK(x) ST.check(x);
#endif
#ifndef PT_TIMING
#define PT_TIMING_REF
#define PT_TIMING_CHECK(x)
#endif
#endif /* __ardour_cycle_timer_h__ */
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