1 #ifdef CONFIG_VALGRIND_DEV
2 #include <valgrind/drd.h>
4 #define DRD_IGNORE_VAR(x) do { } while (0)
9 #include "helper_thread.h"
10 #include "steadystate.h"
13 static struct helper_data {
17 struct sk_out *sk_out;
21 struct fio_sem *startup_sem;
24 void helper_thread_destroy(void)
26 pthread_cond_destroy(&helper_data->cond);
27 pthread_mutex_destroy(&helper_data->lock);
31 void helper_reset(void)
36 pthread_mutex_lock(&helper_data->lock);
38 if (!helper_data->reset) {
39 helper_data->reset = 1;
40 pthread_cond_signal(&helper_data->cond);
43 pthread_mutex_unlock(&helper_data->lock);
46 void helper_do_stat(void)
51 pthread_mutex_lock(&helper_data->lock);
52 helper_data->do_stat = 1;
53 pthread_cond_signal(&helper_data->cond);
54 pthread_mutex_unlock(&helper_data->lock);
57 bool helper_should_exit(void)
62 return helper_data->exit;
65 void helper_thread_exit(void)
69 pthread_mutex_lock(&helper_data->lock);
70 helper_data->exit = 1;
71 pthread_cond_signal(&helper_data->cond);
72 pthread_mutex_unlock(&helper_data->lock);
74 pthread_join(helper_data->thread, &ret);
77 static void *helper_thread_main(void *data)
79 struct helper_data *hd = data;
80 unsigned int msec_to_next_event, next_log, next_ss = STEADYSTATE_MSEC;
82 struct timespec ts, last_du, last_ss;
85 sk_out_assign(hd->sk_out);
87 gettimeofday(&tv, NULL);
88 ts.tv_sec = tv.tv_sec;
89 ts.tv_nsec = tv.tv_usec * 1000;
90 memcpy(&last_du, &ts, sizeof(ts));
91 memcpy(&last_ss, &ts, sizeof(ts));
93 fio_sem_up(hd->startup_sem);
95 msec_to_next_event = DISK_UTIL_MSEC;
96 while (!ret && !hd->exit) {
97 uint64_t since_du, since_ss = 0;
99 timespec_add_msec(&ts, msec_to_next_event);
101 pthread_mutex_lock(&hd->lock);
102 pthread_cond_timedwait(&hd->cond, &hd->lock, &ts);
104 gettimeofday(&tv, NULL);
105 ts.tv_sec = tv.tv_sec;
106 ts.tv_nsec = tv.tv_usec * 1000;
109 memcpy(&last_du, &ts, sizeof(ts));
110 memcpy(&last_ss, &ts, sizeof(ts));
114 pthread_mutex_unlock(&hd->lock);
116 since_du = mtime_since(&last_du, &ts);
117 if (since_du >= DISK_UTIL_MSEC || DISK_UTIL_MSEC - since_du < 10) {
118 ret = update_io_ticks();
119 timespec_add_msec(&last_du, DISK_UTIL_MSEC);
120 msec_to_next_event = DISK_UTIL_MSEC;
121 if (since_du >= DISK_UTIL_MSEC)
122 msec_to_next_event -= (since_du - DISK_UTIL_MSEC);
124 msec_to_next_event = DISK_UTIL_MSEC - since_du;
128 __show_running_run_stats();
131 next_log = calc_log_samples();
133 next_log = DISK_UTIL_MSEC;
135 if (steadystate_enabled) {
136 since_ss = mtime_since(&last_ss, &ts);
137 if (since_ss >= STEADYSTATE_MSEC || STEADYSTATE_MSEC - since_ss < 10) {
139 timespec_add_msec(&last_ss, since_ss);
140 if (since_ss > STEADYSTATE_MSEC)
141 next_ss = STEADYSTATE_MSEC - (since_ss - STEADYSTATE_MSEC);
143 next_ss = STEADYSTATE_MSEC;
145 next_ss = STEADYSTATE_MSEC - since_ss;
148 msec_to_next_event = min(min(next_log, msec_to_next_event), next_ss);
149 dprint(FD_HELPERTHREAD, "since_ss: %llu, next_ss: %u, next_log: %u, msec_to_next_event: %u\n", (unsigned long long)since_ss, next_ss, next_log, msec_to_next_event);
152 print_thread_status();
155 fio_writeout_logs(false);
161 int helper_thread_create(struct fio_sem *startup_sem, struct sk_out *sk_out)
163 struct helper_data *hd;
166 hd = scalloc(1, sizeof(*hd));
173 ret = mutex_cond_init_pshared(&hd->lock, &hd->cond);
177 hd->startup_sem = startup_sem;
179 DRD_IGNORE_VAR(helper_data);
181 ret = pthread_create(&hd->thread, NULL, helper_thread_main, hd);
183 log_err("Can't create helper thread: %s\n", strerror(ret));
189 dprint(FD_MUTEX, "wait on startup_sem\n");
190 fio_sem_down(startup_sem);
191 dprint(FD_MUTEX, "done waiting on startup_sem\n");