mars/kernel/lib_limiter.h

64 lines
1.7 KiB
C

/*
* MARS Long Distance Replication Software
*
* This file is part of MARS project: http://schoebel.github.io/mars/
*
* Copyright (C) 2010-2014 Thomas Schoebel-Theuer
* Copyright (C) 2011-2014 1&1 Internet AG
*
* 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 MARS_LIB_LIMITER_H
#define MARS_LIB_LIMITER_H
#include "brick.h"
#include "lamport.h"
#include <linux/utsname.h>
/* Units:
* Time is in ms
* Rates are in units / s
*/
struct mars_limiter {
/* hierarchy tree */
struct mars_limiter *lim_father;
/* tunables */
int lim_max_ops_rate;
int lim_max_amount_rate;
int lim_max_delay_ms;
int lim_min_window_ms;
int lim_max_window_ms;
/* readable */
int lim_ops_rate;
int lim_amount_rate;
unsigned long lim_total_ops;
unsigned long lim_total_amount;
struct lamport_time lim_stamp;
/* internal */
__s64 lim_ops_accu;
__s64 lim_amount_accu;
};
extern int mars_limit(struct mars_limiter *lim, int amount);
extern void mars_limit_sleep(struct mars_limiter *lim, int amount);
void mars_limit_reset(struct mars_limiter *lim);
#endif