/* Copyright (c) 2021-2024 Barcelona Supercomputing Center (BSC)
 * SPDX-License-Identifier: GPL-3.0-or-later */

#include "instr.h"

int first_clock_set = 0;
int64_t first_clock; /* First clock */
int64_t last_clock; /* Clock from the last event */
int64_t next_clock = -1; /* Clock for the next event */

int64_t get_clock(void)
{
	if (next_clock >= 0) {
		last_clock = next_clock;
		next_clock = -1;
	} else {
		last_clock = (int64_t) ovni_clock_now();
	}

	if (first_clock_set == 0) {
		first_clock = last_clock;
		first_clock_set = 1;
	}

	return last_clock;
}

void set_clock(int64_t t)
{
	next_clock = t;
}

int64_t get_delta(void)
{
	return last_clock - first_clock;
}