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/*
* fio - the flexible io tester
*
* Copyright (C) 2005 Jens Axboe <axboe@suse.de>
* Copyright (C) 2006-2012 Jens Axboe <axboe@kernel.dk>
*
* The license below covers all files distributed with fio unless otherwise
* noted in the file itself.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#include <string.h>
#include <sys/types.h>
#include <signal.h>
#include "fio.h"
/*
* Just expose an empty list, if the OS does not support disk util stats
*/
#ifndef FIO_HAVE_DISK_UTIL
FLIST_HEAD(disk_list);
#endif
unsigned long arch_flags = 0;
static const char *fio_os_strings[os_nr] = {
"Invalid",
"Linux",
"AIX",
"FreeBSD",
"HP-UX",
"OSX",
"NetBSD",
"Solaris",
"Windows"
};
static const char *fio_arch_strings[arch_nr] = {
"Invalid",
"x86-64",
"x86",
"ppc",
"ia64",
"s390",
"alpha",
"sparc",
"sparc64",
"arm",
"sh",
"hppa",
"generic"
};
static void reset_io_counters(struct thread_data *td)
{
td->stat_io_bytes[0] = td->stat_io_bytes[1] = 0;
td->this_io_bytes[0] = td->this_io_bytes[1] = 0;
td->stat_io_blocks[0] = td->stat_io_blocks[1] = 0;
td->this_io_blocks[0] = td->this_io_blocks[1] = 0;
td->zone_bytes = 0;
td->rate_bytes[0] = td->rate_bytes[1] = 0;
td->rate_blocks[0] = td->rate_blocks[1] = 0;
td->last_was_sync = 0;
/*
* reset file done count if we are to start over
*/
if (td->o.time_based || td->o.loops)
td->nr_done_files = 0;
}
void clear_io_state(struct thread_data *td)
{
struct fio_file *f;
unsigned int i;
reset_io_counters(td);
close_files(td);
for_each_file(td, f, i)
fio_file_clear_done(f);
/*
* Set the same seed to get repeatable runs
*/
td_fill_rand_seeds(td);
}
void reset_all_stats(struct thread_data *td)
{
struct timeval tv;
int i;
reset_io_counters(td);
for (i = 0; i < 2; i++) {
td->io_bytes[i] = 0;
td->io_blocks[i] = 0;
td->io_issues[i] = 0;
td->ts.total_io_u[i] = 0;
}
fio_gettime(&tv, NULL);
td->ts.runtime[0] = 0;
td->ts.runtime[1] = 0;
memcpy(&td->epoch, &tv, sizeof(tv));
memcpy(&td->start, &tv, sizeof(tv));
}
void reset_fio_state(void)
{
groupid = 0;
thread_number = 0;
nr_process = 0;
nr_thread = 0;
done_secs = 0;
}
const char *fio_get_os_string(int nr)
{
if (nr < os_nr)
return fio_os_strings[nr];
return NULL;
}
const char *fio_get_arch_string(int nr)
{
if (nr < arch_nr)
return fio_arch_strings[nr];
return NULL;
}
void td_set_runstate(struct thread_data *td, int runstate)
{
if (td->runstate == runstate)
return;
dprint(FD_PROCESS, "pid=%d: runstate %d -> %d\n", (int) td->pid,
td->runstate, runstate);
td->runstate = runstate;
}
void fio_terminate_threads(int group_id)
{
struct thread_data *td;
int i;
dprint(FD_PROCESS, "terminate group_id=%d\n", group_id);
for_each_td(td, i) {
if (group_id == TERMINATE_ALL || groupid == td->groupid) {
dprint(FD_PROCESS, "setting terminate on %s/%d\n",
td->o.name, (int) td->pid);
td->terminate = 1;
td->o.start_delay = 0;
/*
* if the thread is running, just let it exit
*/
if (!td->pid)
continue;
else if (td->runstate < TD_RAMP)
kill(td->pid, SIGTERM);
else {
struct ioengine_ops *ops = td->io_ops;
if (ops && (ops->flags & FIO_SIGTERM))
kill(td->pid, SIGTERM);
}
}
}
}
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