Move gtod thread to gettime.c
[fio.git] / fio.c
diff --git a/fio.c b/fio.c
index 3e4dbb749fd97d9a7af718d27a22d5cc15cb749c..4f07214ecb65ddd7a56b77216ebc03bb3479121a 100644 (file)
--- a/fio.c
+++ b/fio.c
@@ -55,18 +55,24 @@ unsigned long page_size;
        (char *) (((unsigned long) (buf) + page_mask) & ~page_mask)
 
 int groupid = 0;
-int thread_number = 0;
-int nr_process = 0;
-int nr_thread = 0;
+unsigned int thread_number = 0;
+unsigned int nr_process = 0;
+unsigned int nr_thread = 0;
 int shm_id = 0;
 int temp_stall_ts;
 unsigned long done_secs = 0;
 
+/*
+ * Just expose an empty list, if the OS does not support disk util stats
+ */
+#ifndef FIO_HAVE_DISK_UTIL
+FLIST_HEAD(disk_list);
+#endif
+
 static struct fio_mutex *startup_mutex;
 static struct fio_mutex *writeout_mutex;
 static volatile int fio_abort;
 static int exit_value;
-static pthread_t gtod_thread;
 static pthread_t disk_util_thread;
 static struct flist_head *cgroup_list;
 static char *cgroup_mnt;
@@ -77,6 +83,50 @@ struct io_log *agg_io_log[2];
 
 #define JOB_START_TIMEOUT      (5 * 1000)
 
+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"
+};
+
+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)
@@ -121,10 +171,14 @@ void fio_terminate_threads(int group_id)
 static void sig_int(int sig)
 {
        if (threads) {
-               log_info("\nfio: terminating on signal %d\n", sig);
-               exit_backend = 1;
-               fflush(stdout);
-               exit_value = 128;
+               if (is_backend)
+                       fio_server_got_signal(sig);
+               else {
+                       log_info("\nfio: terminating on signal %d\n", sig);
+                       fflush(stdout);
+                       exit_value = 128;
+               }
+
                fio_terminate_threads(TERMINATE_ALL);
        }
 }
@@ -139,9 +193,7 @@ static void *disk_thread_main(void *data)
                        break;
                update_io_ticks();
 
-               if (is_backend)
-                       fio_server_send_status();
-               else
+               if (!is_backend)
                        print_thread_status();
        }
 
@@ -217,7 +269,7 @@ static int __check_min_rate(struct thread_data *td, struct timeval *now,
        if (mtime_since(&td->start, now) < 2000)
                return 0;
 
-       iops += td->io_blocks[ddir];
+       iops += td->this_io_blocks[ddir];
        bytes += td->this_io_bytes[ddir];
        ratemin += td->o.ratemin[ddir];
        rate_iops += td->o.rate_iops[ddir];
@@ -290,6 +342,8 @@ static int check_min_rate(struct thread_data *td, struct timeval *now,
 
 static inline int runtime_exceeded(struct thread_data *td, struct timeval *t)
 {
+       if (in_ramp_time(td))
+               return 0;
        if (!td->o.timeout)
                return 0;
        if (mtime_since(&td->epoch, t) >= td->o.timeout * 1000)
@@ -399,21 +453,22 @@ static inline void update_tv_cache(struct thread_data *td)
                __update_tv_cache(td);
 }
 
-static int break_on_this_error(struct thread_data *td, int *retptr)
+static int break_on_this_error(struct thread_data *td, enum fio_ddir ddir,
+                              int *retptr)
 {
        int ret = *retptr;
 
        if (ret < 0 || td->error) {
                int err;
 
-               if (!td->o.continue_on_error)
-                       return 1;
-
                if (ret < 0)
                        err = -ret;
                else
                        err = td->error;
 
+               if (!(td->o.continue_on_error & td_error_type(ddir, err)))
+                       return 1;
+
                if (td_non_fatal_error(err)) {
                        /*
                         * Continue with the I/Os in case of
@@ -559,7 +614,7 @@ sync_done:
                        break;
                }
 
-               if (break_on_this_error(td, &ret))
+               if (break_on_this_error(td, io_u->ddir, &ret))
                        break;
 
                /*
@@ -625,6 +680,7 @@ static void do_io(struct thread_data *td)
                int min_evts = 0;
                struct io_u *io_u;
                int ret2, full;
+               enum fio_ddir ddir;
 
                if (td->terminate)
                        break;
@@ -643,6 +699,8 @@ static void do_io(struct thread_data *td)
                if (!io_u)
                        break;
 
+               ddir = io_u->ddir;
+
                /*
                 * Add verification end_io handler, if asked to verify
                 * a previously written file.
@@ -721,7 +779,7 @@ sync_done:
                        break;
                }
 
-               if (break_on_this_error(td, &ret))
+               if (break_on_this_error(td, ddir, &ret))
                        break;
 
                /*
@@ -780,7 +838,7 @@ sync_done:
        }
 
        if (td->trim_entries)
-               printf("trim entries %ld\n", td->trim_entries);
+               log_err("fio: %d trim entries leaked?\n", td->trim_entries);
 
        if (td->o.fill_device && td->error == ENOSPC) {
                td->error = 0;
@@ -883,7 +941,7 @@ static int init_io_u(struct thread_data *td)
                dprint(FD_MEM, "io_u alloc %p, index %u\n", io_u, i);
 
                if (!(td->io_ops->flags & FIO_NOIO)) {
-                       io_u->buf = p + max_bs * i;
+                       io_u->buf = p;
                        dprint(FD_MEM, "io_u %p, mem %p\n", io_u, io_u->buf);
 
                        if (td_write(td))
@@ -900,6 +958,7 @@ static int init_io_u(struct thread_data *td)
                io_u->index = i;
                io_u->flags = IO_U_F_FREE;
                flist_add(&io_u->list, &td->io_u_freelist);
+               p += max_bs;
        }
 
        return 0;
@@ -986,6 +1045,8 @@ 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;
@@ -1184,13 +1245,16 @@ static void *thread_main(void *data)
        clear_state = 0;
        while (keep_running(td)) {
                fio_gettime(&td->start, NULL);
-               memcpy(&td->stat_sample_time[0], &td->start, sizeof(td->start));
-               memcpy(&td->stat_sample_time[1], &td->start, sizeof(td->start));
+               memcpy(&td->bw_sample_time, &td->start, sizeof(td->start));
+               memcpy(&td->iops_sample_time, &td->start, sizeof(td->start));
                memcpy(&td->tv_cache, &td->start, sizeof(td->start));
 
-               if (td->o.ratemin[0] || td->o.ratemin[1])
-                       memcpy(&td->lastrate, &td->stat_sample_time,
-                                                       sizeof(td->lastrate));
+               if (td->o.ratemin[0] || td->o.ratemin[1]) {
+                       memcpy(&td->lastrate[0], &td->bw_sample_time,
+                                               sizeof(td->bw_sample_time));
+                       memcpy(&td->lastrate[1], &td->bw_sample_time,
+                                               sizeof(td->bw_sample_time));
+               }
 
                if (clear_state)
                        clear_io_state(td);
@@ -1266,6 +1330,14 @@ static void *thread_main(void *data)
                } else
                        finish_log(td, td->clat_log, "clat");
        }
+       if (td->iops_log) {
+               if (td->o.iops_log_file) {
+                       finish_log_named(td, td->iops_log,
+                                               td->o.iops_log_file, "iops");
+               } else
+                       finish_log(td, td->iops_log, "iops");
+       }
+
        fio_mutex_up(writeout_mutex);
        if (td->o.exec_postrun)
                exec_string(td->o.exec_postrun);
@@ -1298,7 +1370,6 @@ err:
        if (td->o.write_iolog_file)
                write_iolog_close(td);
 
-       options_mem_free(td);
        td_set_runstate(td, TD_EXITED);
        return (void *) (unsigned long) td->error;
 }
@@ -1336,10 +1407,12 @@ static int fork_main(int shmid, int offset)
 /*
  * Run over the job map and reap the threads that have exited, if any.
  */
-static void reap_threads(int *nr_running, int *t_rate, int *m_rate)
+static void reap_threads(unsigned int *nr_running, unsigned int *t_rate,
+                        unsigned int *m_rate)
 {
        struct thread_data *td;
-       int i, cputhreads, realthreads, pending, status, ret;
+       unsigned int cputhreads, realthreads, pending;
+       int i, status, ret;
 
        /*
         * reap exited threads (TD_EXITED -> TD_REAPED)
@@ -1428,50 +1501,6 @@ reaped:
                fio_terminate_threads(TERMINATE_ALL);
 }
 
-static void *gtod_thread_main(void *data)
-{
-       fio_mutex_up(startup_mutex);
-
-       /*
-        * As long as we have jobs around, update the clock. It would be nice
-        * to have some way of NOT hammering that CPU with gettimeofday(),
-        * but I'm not sure what to use outside of a simple CPU nop to relax
-        * it - we don't want to lose precision.
-        */
-       while (threads) {
-               fio_gtod_update();
-               nop;
-       }
-
-       return NULL;
-}
-
-static int fio_start_gtod_thread(void)
-{
-       pthread_attr_t attr;
-       int ret;
-
-       pthread_attr_init(&attr);
-       pthread_attr_setstacksize(&attr, PTHREAD_STACK_MIN);
-       ret = pthread_create(&gtod_thread, &attr, gtod_thread_main, NULL);
-       pthread_attr_destroy(&attr);
-       if (ret) {
-               log_err("Can't create gtod thread: %s\n", strerror(ret));
-               return 1;
-       }
-
-       ret = pthread_detach(gtod_thread);
-       if (ret) {
-               log_err("Can't detatch gtod thread: %s\n", strerror(ret));
-               return 1;
-       }
-
-       dprint(FD_MUTEX, "wait on startup_mutex\n");
-       fio_mutex_down(startup_mutex);
-       dprint(FD_MUTEX, "done waiting on startup_mutex\n");
-       return 0;
-}
-
 /*
  * Main function for kicking off and reaping jobs, as needed.
  */
@@ -1479,7 +1508,7 @@ static void run_threads(void)
 {
        struct thread_data *td;
        unsigned long spent;
-       int i, todo, nr_running, m_rate, t_rate, nr_started;
+       unsigned int i, todo, nr_running, m_rate, t_rate, nr_started;
 
        if (fio_pin_memory())
                return;
@@ -1496,7 +1525,7 @@ static void run_threads(void)
                                                nr_thread > 1 ? "s" : "");
                if (nr_process) {
                        if (nr_thread)
-                               printf(" and ");
+                               log_info(" and ");
                        log_info("%d process%s", nr_process,
                                                nr_process > 1 ? "es" : "");
                }
@@ -1687,8 +1716,12 @@ static void run_threads(void)
 
                reap_threads(&nr_running, &t_rate, &m_rate);
 
-               if (todo)
-                       usleep(100000);
+               if (todo) {
+                       if (is_backend)
+                               fio_server_idle_loop();
+                       else
+                               usleep(100000);
+               }
        }
 
        while (nr_running) {
@@ -1706,17 +1739,23 @@ static void run_threads(void)
 
 int exec_run(void)
 {
+       struct thread_data *td;
+       int i;
+
        if (nr_clients)
                return fio_handle_clients();
-       if (exec_profile && load_profile(exec_profile))
-               return 1;
-
+       if (exec_profile) {
+               if (load_profile(exec_profile))
+                       return 1;
+               free(exec_profile);
+               exec_profile = NULL;
+       }
        if (!thread_number)
                return 0;
 
        if (write_bw_log) {
-               setup_log(&agg_io_log[DDIR_READ]);
-               setup_log(&agg_io_log[DDIR_WRITE]);
+               setup_log(&agg_io_log[DDIR_READ], 0);
+               setup_log(&agg_io_log[DDIR_WRITE], 0);
        }
 
        startup_mutex = fio_mutex_init(0);
@@ -1743,6 +1782,9 @@ int exec_run(void)
                }
        }
 
+       for_each_td(td, i)
+               fio_options_free(td);
+
        cgroup_kill(cgroup_list);
        sfree(cgroup_list);
        sfree(cgroup_mnt);
@@ -1761,10 +1803,46 @@ void reset_fio_state(void)
        done_secs = 0;
 }
 
+static int endian_check(void)
+{
+       union {
+               uint8_t c[8];
+               uint64_t v;
+       } u;
+       int le = 0, be = 0;
+
+       u.v = 0x12;
+       if (u.c[7] == 0x12)
+               be = 1;
+       else if (u.c[0] == 0x12)
+               le = 1;
+
+#if defined(FIO_LITTLE_ENDIAN)
+       if (be)
+               return 1;
+#elif defined(FIO_BIG_ENDIAN)
+       if (le)
+               return 1;
+#else
+       return 1;
+#endif
+
+       if (!le && !be)
+               return 1;
+
+       return 0;
+}
+
 int main(int argc, char *argv[], char *envp[])
 {
        long ps;
 
+       if (endian_check()) {
+               log_err("fio: endianness settings appear wrong.\n");
+               log_err("fio: please report this to fio@vger.kernel.org\n");
+               return 1;
+       }
+
        arch_init(envp);
 
        sinit();