/**
 * \file
 */

#ifndef __UTILS_MONO_TIME_H__
#define __UTILS_MONO_TIME_H__

#include <mono/utils/mono-compiler.h>
#include <glib.h>

#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#endif

/* Returns the number of milliseconds from boot time: this should be monotonic
 *
 * Prefer to use mono_msec_ticks for elapsed time calculation. */
gint64 mono_msec_boottime (void);

/* Returns the number of milliseconds ticks from unspecified time: this should be monotonic */
gint64 mono_msec_ticks (void);

/* Returns the number of 100ns ticks from unspecified time: this should be monotonic */
gint64 mono_100ns_ticks (void);

/* Returns the number of 100ns ticks since 1/1/1601, UTC timezone */
gint64 mono_100ns_datetime (void);

#ifndef HOST_WIN32
gint64 mono_100ns_datetime_from_timeval (struct timeval tv);
#endif

/* Stopwatch class for internal runtime use */
typedef struct {
	gint64 start, stop;
} MonoStopwatch;

static inline void
mono_stopwatch_start (MonoStopwatch *w)
{
	w->start = mono_100ns_ticks ();
	w->stop = 0;
}

static inline void
mono_stopwatch_stop (MonoStopwatch *w)
{
	w->stop = mono_100ns_ticks ();
}

static inline guint64
mono_stopwatch_elapsed (MonoStopwatch *w)
{
	return (w->stop - w->start) / 10;
}

static inline guint64
mono_stopwatch_elapsed_ms (MonoStopwatch *w)
{
	return (mono_stopwatch_elapsed (w) + 500) / 1000;
}

#endif /* __UTILS_MONO_TIME_H__ */