Commit | Line | Data |
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4f37732a BVA |
1 | #ifdef CONFIG_VALGRIND_DEV |
2 | #include <valgrind/drd.h> | |
3 | #else | |
4 | #define DRD_IGNORE_VAR(x) do { } while (0) | |
5 | #endif | |
6 | ||
a39fb9ea JA |
7 | #include "fio.h" |
8 | #include "smalloc.h" | |
9 | #include "helper_thread.h" | |
16e56d25 | 10 | #include "steadystate.h" |
ae626d4e | 11 | #include "pshared.h" |
a39fb9ea JA |
12 | |
13 | static struct helper_data { | |
14 | volatile int exit; | |
dda11987 JA |
15 | volatile int reset; |
16 | volatile int do_stat; | |
a39fb9ea JA |
17 | struct sk_out *sk_out; |
18 | pthread_t thread; | |
dda11987 JA |
19 | pthread_mutex_t lock; |
20 | pthread_cond_t cond; | |
971caeb1 | 21 | struct fio_sem *startup_sem; |
a39fb9ea JA |
22 | } *helper_data; |
23 | ||
24 | void helper_thread_destroy(void) | |
25 | { | |
998e9ebb BVA |
26 | if (!helper_data) |
27 | return; | |
28 | ||
dda11987 JA |
29 | pthread_cond_destroy(&helper_data->cond); |
30 | pthread_mutex_destroy(&helper_data->lock); | |
a39fb9ea JA |
31 | sfree(helper_data); |
32 | } | |
33 | ||
dda11987 | 34 | void helper_reset(void) |
a39fb9ea JA |
35 | { |
36 | if (!helper_data) | |
37 | return; | |
38 | ||
dda11987 | 39 | pthread_mutex_lock(&helper_data->lock); |
a39fb9ea | 40 | |
dda11987 JA |
41 | if (!helper_data->reset) { |
42 | helper_data->reset = 1; | |
43 | pthread_cond_signal(&helper_data->cond); | |
44 | } | |
45 | ||
46 | pthread_mutex_unlock(&helper_data->lock); | |
a39fb9ea JA |
47 | } |
48 | ||
49 | void helper_do_stat(void) | |
50 | { | |
dda11987 JA |
51 | if (!helper_data) |
52 | return; | |
53 | ||
54 | pthread_mutex_lock(&helper_data->lock); | |
55 | helper_data->do_stat = 1; | |
56 | pthread_cond_signal(&helper_data->cond); | |
57 | pthread_mutex_unlock(&helper_data->lock); | |
a39fb9ea JA |
58 | } |
59 | ||
60 | bool helper_should_exit(void) | |
61 | { | |
62 | if (!helper_data) | |
63 | return true; | |
64 | ||
65 | return helper_data->exit; | |
66 | } | |
67 | ||
68 | void helper_thread_exit(void) | |
69 | { | |
dda11987 JA |
70 | void *ret; |
71 | ||
998e9ebb BVA |
72 | if (!helper_data) |
73 | return; | |
74 | ||
dda11987 | 75 | pthread_mutex_lock(&helper_data->lock); |
a39fb9ea | 76 | helper_data->exit = 1; |
dda11987 JA |
77 | pthread_cond_signal(&helper_data->cond); |
78 | pthread_mutex_unlock(&helper_data->lock); | |
79 | ||
80 | pthread_join(helper_data->thread, &ret); | |
a39fb9ea JA |
81 | } |
82 | ||
83 | static void *helper_thread_main(void *data) | |
84 | { | |
85 | struct helper_data *hd = data; | |
16e56d25 | 86 | unsigned int msec_to_next_event, next_log, next_ss = STEADYSTATE_MSEC; |
8b6a404c | 87 | struct timespec ts, last_du, last_ss; |
a39fb9ea JA |
88 | int ret = 0; |
89 | ||
90 | sk_out_assign(hd->sk_out); | |
91 | ||
78b66d32 BVA |
92 | #ifdef CONFIG_PTHREAD_CONDATTR_SETCLOCK |
93 | clock_gettime(CLOCK_MONOTONIC, &ts); | |
94 | #else | |
95 | clock_gettime(CLOCK_REALTIME, &ts); | |
96 | #endif | |
8b6a404c VF |
97 | memcpy(&last_du, &ts, sizeof(ts)); |
98 | memcpy(&last_ss, &ts, sizeof(ts)); | |
a39fb9ea | 99 | |
971caeb1 | 100 | fio_sem_up(hd->startup_sem); |
a39fb9ea JA |
101 | |
102 | msec_to_next_event = DISK_UTIL_MSEC; | |
103 | while (!ret && !hd->exit) { | |
16e56d25 | 104 | uint64_t since_du, since_ss = 0; |
a39fb9ea | 105 | |
8b6a404c | 106 | timespec_add_msec(&ts, msec_to_next_event); |
a39fb9ea | 107 | |
dda11987 JA |
108 | pthread_mutex_lock(&hd->lock); |
109 | pthread_cond_timedwait(&hd->cond, &hd->lock, &ts); | |
a39fb9ea | 110 | |
78b66d32 BVA |
111 | #ifdef CONFIG_PTHREAD_CONDATTR_SETCLOCK |
112 | clock_gettime(CLOCK_MONOTONIC, &ts); | |
113 | #else | |
114 | clock_gettime(CLOCK_REALTIME, &ts); | |
115 | #endif | |
a39fb9ea | 116 | |
dda11987 JA |
117 | if (hd->reset) { |
118 | memcpy(&last_du, &ts, sizeof(ts)); | |
119 | memcpy(&last_ss, &ts, sizeof(ts)); | |
120 | hd->reset = 0; | |
a39fb9ea JA |
121 | } |
122 | ||
dda11987 JA |
123 | pthread_mutex_unlock(&hd->lock); |
124 | ||
8b6a404c | 125 | since_du = mtime_since(&last_du, &ts); |
a39fb9ea JA |
126 | if (since_du >= DISK_UTIL_MSEC || DISK_UTIL_MSEC - since_du < 10) { |
127 | ret = update_io_ticks(); | |
8b6a404c | 128 | timespec_add_msec(&last_du, DISK_UTIL_MSEC); |
a39fb9ea JA |
129 | msec_to_next_event = DISK_UTIL_MSEC; |
130 | if (since_du >= DISK_UTIL_MSEC) | |
131 | msec_to_next_event -= (since_du - DISK_UTIL_MSEC); | |
dd290fb4 VF |
132 | } else |
133 | msec_to_next_event = DISK_UTIL_MSEC - since_du; | |
a39fb9ea | 134 | |
dda11987 JA |
135 | if (hd->do_stat) { |
136 | hd->do_stat = 0; | |
a39fb9ea | 137 | __show_running_run_stats(); |
dda11987 | 138 | } |
a39fb9ea JA |
139 | |
140 | next_log = calc_log_samples(); | |
141 | if (!next_log) | |
142 | next_log = DISK_UTIL_MSEC; | |
143 | ||
84784e07 | 144 | if (steadystate_enabled) { |
8b6a404c | 145 | since_ss = mtime_since(&last_ss, &ts); |
16e56d25 VF |
146 | if (since_ss >= STEADYSTATE_MSEC || STEADYSTATE_MSEC - since_ss < 10) { |
147 | steadystate_check(); | |
8b6a404c | 148 | timespec_add_msec(&last_ss, since_ss); |
16e56d25 VF |
149 | if (since_ss > STEADYSTATE_MSEC) |
150 | next_ss = STEADYSTATE_MSEC - (since_ss - STEADYSTATE_MSEC); | |
151 | else | |
152 | next_ss = STEADYSTATE_MSEC; | |
c27cc65f | 153 | } else |
16e56d25 VF |
154 | next_ss = STEADYSTATE_MSEC - since_ss; |
155 | } | |
156 | ||
157 | msec_to_next_event = min(min(next_log, msec_to_next_event), next_ss); | |
e569ca6b | 158 | 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 |
159 | |
160 | if (!is_backend) | |
161 | print_thread_status(); | |
162 | } | |
163 | ||
164 | fio_writeout_logs(false); | |
165 | ||
166 | sk_out_drop(); | |
167 | return NULL; | |
168 | } | |
169 | ||
971caeb1 | 170 | int helper_thread_create(struct fio_sem *startup_sem, struct sk_out *sk_out) |
a39fb9ea JA |
171 | { |
172 | struct helper_data *hd; | |
173 | int ret; | |
174 | ||
b3090ff4 | 175 | hd = scalloc(1, sizeof(*hd)); |
a39fb9ea JA |
176 | |
177 | setup_disk_util(); | |
16e56d25 | 178 | steadystate_setup(); |
a39fb9ea JA |
179 | |
180 | hd->sk_out = sk_out; | |
34febb23 | 181 | |
dda11987 | 182 | ret = mutex_cond_init_pshared(&hd->lock, &hd->cond); |
34febb23 | 183 | if (ret) |
f9e5b5ee | 184 | return 1; |
34febb23 | 185 | |
971caeb1 | 186 | hd->startup_sem = startup_sem; |
a39fb9ea | 187 | |
4f37732a BVA |
188 | DRD_IGNORE_VAR(helper_data); |
189 | ||
a39fb9ea JA |
190 | ret = pthread_create(&hd->thread, NULL, helper_thread_main, hd); |
191 | if (ret) { | |
192 | log_err("Can't create helper thread: %s\n", strerror(ret)); | |
193 | return 1; | |
194 | } | |
195 | ||
196 | helper_data = hd; | |
197 | ||
971caeb1 BVA |
198 | dprint(FD_MUTEX, "wait on startup_sem\n"); |
199 | fio_sem_down(startup_sem); | |
200 | dprint(FD_MUTEX, "done waiting on startup_sem\n"); | |
a39fb9ea JA |
201 | return 0; |
202 | } |