2 * fio - the flexible io tester
4 * Copyright (C) 2005 Jens Axboe <axboe@suse.de>
5 * Copyright (C) 2006-2012 Jens Axboe <axboe@kernel.dk>
7 * The license below covers all files distributed with fio unless otherwise
8 * noted in the file itself.
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2 as
12 * published by the Free Software Foundation.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
29 * Just expose an empty list, if the OS does not support disk util stats
31 #ifndef FIO_HAVE_DISK_UTIL
32 FLIST_HEAD(disk_list);
35 unsigned long arch_flags = 0;
37 static const char *fio_os_strings[os_nr] = {
49 static const char *fio_arch_strings[arch_nr] = {
65 static void reset_io_counters(struct thread_data *td)
67 td->stat_io_bytes[0] = td->stat_io_bytes[1] = 0;
68 td->this_io_bytes[0] = td->this_io_bytes[1] = 0;
69 td->stat_io_blocks[0] = td->stat_io_blocks[1] = 0;
70 td->this_io_blocks[0] = td->this_io_blocks[1] = 0;
72 td->rate_bytes[0] = td->rate_bytes[1] = 0;
73 td->rate_blocks[0] = td->rate_blocks[1] = 0;
75 td->last_was_sync = 0;
78 * reset file done count if we are to start over
80 if (td->o.time_based || td->o.loops)
81 td->nr_done_files = 0;
84 void clear_io_state(struct thread_data *td)
89 reset_io_counters(td);
92 for_each_file(td, f, i)
93 fio_file_clear_done(f);
96 * Set the same seed to get repeatable runs
98 td_fill_rand_seeds(td);
101 void reset_all_stats(struct thread_data *td)
106 reset_io_counters(td);
108 for (i = 0; i < 2; i++) {
110 td->io_blocks[i] = 0;
111 td->io_issues[i] = 0;
112 td->ts.total_io_u[i] = 0;
115 fio_gettime(&tv, NULL);
116 td->ts.runtime[0] = 0;
117 td->ts.runtime[1] = 0;
118 memcpy(&td->epoch, &tv, sizeof(tv));
119 memcpy(&td->start, &tv, sizeof(tv));
122 void reset_fio_state(void)
131 const char *fio_get_os_string(int nr)
134 return fio_os_strings[nr];
139 const char *fio_get_arch_string(int nr)
142 return fio_arch_strings[nr];
147 void td_set_runstate(struct thread_data *td, int runstate)
149 if (td->runstate == runstate)
152 dprint(FD_PROCESS, "pid=%d: runstate %d -> %d\n", (int) td->pid,
153 td->runstate, runstate);
154 td->runstate = runstate;
157 void fio_terminate_threads(int group_id)
159 struct thread_data *td;
162 dprint(FD_PROCESS, "terminate group_id=%d\n", group_id);
165 if (group_id == TERMINATE_ALL || groupid == td->groupid) {
166 dprint(FD_PROCESS, "setting terminate on %s/%d\n",
167 td->o.name, (int) td->pid);
169 td->o.start_delay = 0;
172 * if the thread is running, just let it exit
176 else if (td->runstate < TD_RAMP)
177 kill(td->pid, SIGTERM);
179 struct ioengine_ops *ops = td->io_ops;
181 if (ops && (ops->flags & FIO_SIGTERM))
182 kill(td->pid, SIGTERM);