Commit | Line | Data |
---|---|---|
a39fb9ea JA |
1 | #include "fio.h" |
2 | #include "smalloc.h" | |
3 | #include "helper_thread.h" | |
16e56d25 | 4 | #include "steadystate.h" |
ae626d4e | 5 | #include "pshared.h" |
a39fb9ea JA |
6 | |
7 | static struct helper_data { | |
8 | volatile int exit; | |
9 | volatile int reset; | |
10 | volatile int do_stat; | |
11 | struct sk_out *sk_out; | |
12 | pthread_t thread; | |
13 | pthread_mutex_t lock; | |
14 | pthread_cond_t cond; | |
971caeb1 | 15 | struct fio_sem *startup_sem; |
a39fb9ea JA |
16 | } *helper_data; |
17 | ||
18 | void helper_thread_destroy(void) | |
19 | { | |
20 | pthread_cond_destroy(&helper_data->cond); | |
21 | pthread_mutex_destroy(&helper_data->lock); | |
22 | sfree(helper_data); | |
23 | } | |
24 | ||
25 | void helper_reset(void) | |
26 | { | |
27 | if (!helper_data) | |
28 | return; | |
29 | ||
30 | pthread_mutex_lock(&helper_data->lock); | |
31 | ||
32 | if (!helper_data->reset) { | |
33 | helper_data->reset = 1; | |
34 | pthread_cond_signal(&helper_data->cond); | |
35 | } | |
36 | ||
37 | pthread_mutex_unlock(&helper_data->lock); | |
38 | } | |
39 | ||
40 | void helper_do_stat(void) | |
41 | { | |
42 | if (!helper_data) | |
43 | return; | |
44 | ||
45 | pthread_mutex_lock(&helper_data->lock); | |
46 | helper_data->do_stat = 1; | |
47 | pthread_cond_signal(&helper_data->cond); | |
48 | pthread_mutex_unlock(&helper_data->lock); | |
49 | } | |
50 | ||
51 | bool helper_should_exit(void) | |
52 | { | |
53 | if (!helper_data) | |
54 | return true; | |
55 | ||
56 | return helper_data->exit; | |
57 | } | |
58 | ||
59 | void helper_thread_exit(void) | |
60 | { | |
61 | void *ret; | |
62 | ||
63 | pthread_mutex_lock(&helper_data->lock); | |
64 | helper_data->exit = 1; | |
65 | pthread_cond_signal(&helper_data->cond); | |
66 | pthread_mutex_unlock(&helper_data->lock); | |
67 | ||
68 | pthread_join(helper_data->thread, &ret); | |
69 | } | |
70 | ||
71 | static void *helper_thread_main(void *data) | |
72 | { | |
73 | struct helper_data *hd = data; | |
16e56d25 | 74 | unsigned int msec_to_next_event, next_log, next_ss = STEADYSTATE_MSEC; |
8b6a404c VF |
75 | struct timeval tv; |
76 | struct timespec ts, last_du, last_ss; | |
a39fb9ea JA |
77 | int ret = 0; |
78 | ||
79 | sk_out_assign(hd->sk_out); | |
80 | ||
81 | gettimeofday(&tv, NULL); | |
8b6a404c VF |
82 | ts.tv_sec = tv.tv_sec; |
83 | ts.tv_nsec = tv.tv_usec * 1000; | |
84 | memcpy(&last_du, &ts, sizeof(ts)); | |
85 | memcpy(&last_ss, &ts, sizeof(ts)); | |
a39fb9ea | 86 | |
971caeb1 | 87 | fio_sem_up(hd->startup_sem); |
a39fb9ea JA |
88 | |
89 | msec_to_next_event = DISK_UTIL_MSEC; | |
90 | while (!ret && !hd->exit) { | |
16e56d25 | 91 | uint64_t since_du, since_ss = 0; |
a39fb9ea | 92 | |
8b6a404c | 93 | timespec_add_msec(&ts, msec_to_next_event); |
a39fb9ea JA |
94 | |
95 | pthread_mutex_lock(&hd->lock); | |
96 | pthread_cond_timedwait(&hd->cond, &hd->lock, &ts); | |
97 | ||
8b6a404c VF |
98 | gettimeofday(&tv, NULL); |
99 | ts.tv_sec = tv.tv_sec; | |
100 | ts.tv_nsec = tv.tv_usec * 1000; | |
a39fb9ea JA |
101 | |
102 | if (hd->reset) { | |
8b6a404c VF |
103 | memcpy(&last_du, &ts, sizeof(ts)); |
104 | memcpy(&last_ss, &ts, sizeof(ts)); | |
a39fb9ea JA |
105 | hd->reset = 0; |
106 | } | |
107 | ||
108 | pthread_mutex_unlock(&hd->lock); | |
109 | ||
8b6a404c | 110 | since_du = mtime_since(&last_du, &ts); |
a39fb9ea JA |
111 | if (since_du >= DISK_UTIL_MSEC || DISK_UTIL_MSEC - since_du < 10) { |
112 | ret = update_io_ticks(); | |
8b6a404c | 113 | timespec_add_msec(&last_du, DISK_UTIL_MSEC); |
a39fb9ea JA |
114 | msec_to_next_event = DISK_UTIL_MSEC; |
115 | if (since_du >= DISK_UTIL_MSEC) | |
116 | msec_to_next_event -= (since_du - DISK_UTIL_MSEC); | |
dd290fb4 VF |
117 | } else |
118 | msec_to_next_event = DISK_UTIL_MSEC - since_du; | |
a39fb9ea JA |
119 | |
120 | if (hd->do_stat) { | |
121 | hd->do_stat = 0; | |
122 | __show_running_run_stats(); | |
123 | } | |
124 | ||
125 | next_log = calc_log_samples(); | |
126 | if (!next_log) | |
127 | next_log = DISK_UTIL_MSEC; | |
128 | ||
84784e07 | 129 | if (steadystate_enabled) { |
8b6a404c | 130 | since_ss = mtime_since(&last_ss, &ts); |
16e56d25 VF |
131 | if (since_ss >= STEADYSTATE_MSEC || STEADYSTATE_MSEC - since_ss < 10) { |
132 | steadystate_check(); | |
8b6a404c | 133 | timespec_add_msec(&last_ss, since_ss); |
16e56d25 VF |
134 | if (since_ss > STEADYSTATE_MSEC) |
135 | next_ss = STEADYSTATE_MSEC - (since_ss - STEADYSTATE_MSEC); | |
136 | else | |
137 | next_ss = STEADYSTATE_MSEC; | |
c27cc65f | 138 | } else |
16e56d25 VF |
139 | next_ss = STEADYSTATE_MSEC - since_ss; |
140 | } | |
141 | ||
142 | msec_to_next_event = min(min(next_log, msec_to_next_event), next_ss); | |
e569ca6b | 143 | 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); |
a39fb9ea JA |
144 | |
145 | if (!is_backend) | |
146 | print_thread_status(); | |
147 | } | |
148 | ||
149 | fio_writeout_logs(false); | |
150 | ||
151 | sk_out_drop(); | |
152 | return NULL; | |
153 | } | |
154 | ||
971caeb1 | 155 | int helper_thread_create(struct fio_sem *startup_sem, struct sk_out *sk_out) |
a39fb9ea JA |
156 | { |
157 | struct helper_data *hd; | |
158 | int ret; | |
159 | ||
b3090ff4 | 160 | hd = scalloc(1, sizeof(*hd)); |
a39fb9ea JA |
161 | |
162 | setup_disk_util(); | |
16e56d25 | 163 | steadystate_setup(); |
a39fb9ea JA |
164 | |
165 | hd->sk_out = sk_out; | |
34febb23 JA |
166 | |
167 | ret = mutex_cond_init_pshared(&hd->lock, &hd->cond); | |
168 | if (ret) | |
f9e5b5ee | 169 | return 1; |
34febb23 | 170 | |
971caeb1 | 171 | hd->startup_sem = startup_sem; |
a39fb9ea JA |
172 | |
173 | ret = pthread_create(&hd->thread, NULL, helper_thread_main, hd); | |
174 | if (ret) { | |
175 | log_err("Can't create helper thread: %s\n", strerror(ret)); | |
176 | return 1; | |
177 | } | |
178 | ||
179 | helper_data = hd; | |
180 | ||
971caeb1 BVA |
181 | dprint(FD_MUTEX, "wait on startup_sem\n"); |
182 | fio_sem_down(startup_sem); | |
183 | dprint(FD_MUTEX, "done waiting on startup_sem\n"); | |
a39fb9ea JA |
184 | return 0; |
185 | } |