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
26 #include <sys/types.h>
31 * Just expose an empty list, if the OS does not support disk util stats
33 #ifndef FIO_HAVE_DISK_UTIL
34 FLIST_HEAD(disk_list);
37 unsigned long arch_flags = 0;
39 static const char *fio_os_strings[os_nr] = {
51 static const char *fio_arch_strings[arch_nr] = {
67 static void reset_io_counters(struct thread_data *td)
70 for (ddir = 0; ddir < DDIR_RWDIR_CNT; ddir++) {
71 td->stat_io_bytes[ddir] = 0;
72 td->this_io_bytes[ddir] = 0;
73 td->stat_io_blocks[ddir] = 0;
74 td->this_io_blocks[ddir] = 0;
75 td->rate_bytes[ddir] = 0;
76 td->rate_blocks[ddir] = 0;
80 td->last_was_sync = 0;
83 * reset file done count if we are to start over
85 if (td->o.time_based || td->o.loops)
86 td->nr_done_files = 0;
89 void clear_io_state(struct thread_data *td)
94 reset_io_counters(td);
97 for_each_file(td, f, i)
98 fio_file_clear_done(f);
101 * Set the same seed to get repeatable runs
103 td_fill_rand_seeds(td);
106 void reset_all_stats(struct thread_data *td)
111 reset_io_counters(td);
113 for (i = 0; i < DDIR_RWDIR_CNT; i++) {
115 td->io_blocks[i] = 0;
116 td->io_issues[i] = 0;
117 td->ts.total_io_u[i] = 0;
118 td->ts.runtime[i] = 0;
121 fio_gettime(&tv, NULL);
122 memcpy(&td->epoch, &tv, sizeof(tv));
123 memcpy(&td->start, &tv, sizeof(tv));
126 void reset_fio_state(void)
136 const char *fio_get_os_string(int nr)
139 return fio_os_strings[nr];
144 const char *fio_get_arch_string(int nr)
147 return fio_arch_strings[nr];
152 void td_set_runstate(struct thread_data *td, int runstate)
154 if (td->runstate == runstate)
157 dprint(FD_PROCESS, "pid=%d: runstate %d -> %d\n", (int) td->pid,
158 td->runstate, runstate);
159 td->runstate = runstate;
162 void fio_terminate_threads(int group_id)
164 struct thread_data *td;
165 pid_t pid = getpid();
168 dprint(FD_PROCESS, "terminate group_id=%d\n", group_id);
171 if (group_id == TERMINATE_ALL || groupid == td->groupid) {
172 dprint(FD_PROCESS, "setting terminate on %s/%d\n",
173 td->o.name, (int) td->pid);
175 td->o.start_delay = 0;
178 * if the thread is running, just let it exit
182 else if (td->runstate < TD_RAMP)
183 kill(td->pid, SIGTERM);
184 else if (pid != td->pid) {
185 struct ioengine_ops *ops = td->io_ops;
187 if (ops && (ops->flags & FIO_SIGTERM))
188 kill(td->pid, SIGTERM);