/* Copyright (c) 2014 The Regents of the University of California
 * Kevin Klues <klueska@cs.berkeley.edu>
 * See LICENSE for details. */

#pragma once

#include <stdint.h>

__BEGIN_DECLS

/* Types of per-vcore alarms that can be set */
enum {
	/* This is a real-time alarm that does not take into account time that a
	 * vcore spends offline not doing work. It is like the posix ITIMER_REAL
	 * but for vcores. */
	PVCALARM_REAL,
	/* This is a profiling alarm that only accounts for time that a vcore
	 * spends online doing useful work. It is like the posix ITIMER_PROF but
	 * for vcores. */
	PVCALARM_PROF
};

/* Enable the per-vcore calarm service according to one of the policies listed
 * above.  Every interval usecs the provided callback will be called on each
 * active vcore according to that policy. */
int enable_pvcalarms(int policy, uint64_t interval, void (*callback) (void));

/* Disable the currently active per-vcore alarm service */
int disable_pvcalarms();

__END_DECLS