/* sp-clock.h
 *
 * Copyright (C) 2016 Christian Hergert <chergert@redhat.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 3 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, see <http://www.gnu.org/licenses/>.
 */

#ifndef SP_CLOCK_H
#define SP_CLOCK_H

#include <glib.h>
#include <time.h>

G_BEGIN_DECLS

typedef gint SpClock;
typedef gint64 SpTimeStamp;
typedef gint32 SpTimeSpan;

extern SpClock sp_clock;

static inline SpTimeStamp
sp_clock_get_current_time (void)
{
  struct timespec ts;

  clock_gettime (sp_clock, &ts);

  return (ts.tv_sec * G_GINT64_CONSTANT (1000000000)) + ts.tv_nsec;
}

static inline SpTimeSpan
sp_clock_get_relative_time (SpTimeStamp epoch)
{
  return sp_clock_get_current_time () - epoch;
}

void sp_clock_init (void);

G_END_DECLS

#endif /* SP_CLOCK_H */