mars/kernel/mars_sio.h
2020-09-30 10:34:14 +02:00

75 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_SIO_H
#define MARS_SIO_H
#include "lib_mapfree.h"
#define WITH_THREAD 16
struct sio_mref_aspect {
GENERIC_ASPECT(mref);
struct list_head io_head;
int alloc_len;
bool do_dealloc;
};
struct sio_brick {
MARS_BRICK(sio);
// parameters
bool o_direct;
bool o_fdsync;
};
struct sio_input {
MARS_INPUT(sio);
};
struct sio_threadinfo {
struct sio_output *output;
struct list_head mref_list;
struct task_struct *thread;
wait_queue_head_t event;
spinlock_t lock;
atomic_t queue_count;
atomic_t fly_count;
atomic_t total_count;
unsigned long last_jiffies;
};
struct sio_output {
MARS_OUTPUT(sio);
// private
struct mapfree_info *mf;
struct sio_threadinfo tinfo[WITH_THREAD+1];
spinlock_t g_lock;
atomic_t work_count;
int index;
int error;
};
MARS_TYPES(sio);
#endif