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; | |
15 | volatile int reset; | |
16 | volatile int do_stat; | |
17 | struct sk_out *sk_out; | |
18 | pthread_t thread; | |
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 | { | |
26 | pthread_cond_destroy(&helper_data->cond); | |
27 | pthread_mutex_destroy(&helper_data->lock); | |
28 | sfree(helper_data); | |
29 | } | |
30 | ||
31 | void helper_reset(void) | |
32 | { | |
33 | if (!helper_data) | |
34 | return; | |
35 | ||
36 | pthread_mutex_lock(&helper_data->lock); | |
37 | ||
38 | if (!helper_data->reset) { | |
39 | helper_data->reset = 1; | |
40 | pthread_cond_signal(&helper_data->cond); | |
41 | } | |
42 | ||
43 | pthread_mutex_unlock(&helper_data->lock); | |
44 | } | |
45 | ||
46 | void helper_do_stat(void) | |
47 | { | |
48 | if (!helper_data) | |
49 | return; | |
50 | ||
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); | |
55 | } | |
56 | ||
57 | bool helper_should_exit(void) | |
58 | { | |
59 | if (!helper_data) | |
60 | return true; | |
61 | ||
62 | return helper_data->exit; | |
63 | } | |
64 | ||
65 | void helper_thread_exit(void) | |
66 | { | |
67 | void *ret; | |
68 | ||
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); | |
73 | ||
74 | pthread_join(helper_data->thread, &ret); | |
75 | } | |
76 | ||
77 | static void *helper_thread_main(void *data) | |
78 | { | |
79 | struct helper_data *hd = data; | |
16e56d25 | 80 | unsigned int msec_to_next_event, next_log, next_ss = STEADYSTATE_MSEC; |
8b6a404c VF |
81 | struct timeval tv; |
82 | struct timespec ts, last_du, last_ss; | |
a39fb9ea JA |
83 | int ret = 0; |
84 | ||
85 | sk_out_assign(hd->sk_out); | |
86 | ||
87 | gettimeofday(&tv, NULL); | |
8b6a404c VF |
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)); | |
a39fb9ea | 92 | |
971caeb1 | 93 | fio_sem_up(hd->startup_sem); |
a39fb9ea JA |
94 | |
95 | msec_to_next_event = DISK_UTIL_MSEC; | |
96 | while (!ret && !hd->exit) { | |
16e56d25 | 97 | uint64_t since_du, since_ss = 0; |
a39fb9ea | 98 | |
8b6a404c | 99 | timespec_add_msec(&ts, msec_to_next_event); |
a39fb9ea JA |
100 | |
101 | pthread_mutex_lock(&hd->lock); | |
102 | pthread_cond_timedwait(&hd->cond, &hd->lock, &ts); | |
103 | ||
8b6a404c VF |
104 | gettimeofday(&tv, NULL); |
105 | ts.tv_sec = tv.tv_sec; | |
106 | ts.tv_nsec = tv.tv_usec * 1000; | |
a39fb9ea JA |
107 | |
108 | if (hd->reset) { | |
8b6a404c VF |
109 | memcpy(&last_du, &ts, sizeof(ts)); |
110 | memcpy(&last_ss, &ts, sizeof(ts)); | |
a39fb9ea JA |
111 | hd->reset = 0; |
112 | } | |
113 | ||
114 | pthread_mutex_unlock(&hd->lock); | |
115 | ||
8b6a404c | 116 | since_du = mtime_since(&last_du, &ts); |
a39fb9ea JA |
117 | if (since_du >= DISK_UTIL_MSEC || DISK_UTIL_MSEC - since_du < 10) { |
118 | ret = update_io_ticks(); | |
8b6a404c | 119 | timespec_add_msec(&last_du, DISK_UTIL_MSEC); |
a39fb9ea JA |
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); | |
dd290fb4 VF |
123 | } else |
124 | msec_to_next_event = DISK_UTIL_MSEC - since_du; | |
a39fb9ea JA |
125 | |
126 | if (hd->do_stat) { | |
127 | hd->do_stat = 0; | |
128 | __show_running_run_stats(); | |
129 | } | |
130 | ||
131 | next_log = calc_log_samples(); | |
132 | if (!next_log) | |
133 | next_log = DISK_UTIL_MSEC; | |
134 | ||
84784e07 | 135 | if (steadystate_enabled) { |
8b6a404c | 136 | since_ss = mtime_since(&last_ss, &ts); |
16e56d25 VF |
137 | if (since_ss >= STEADYSTATE_MSEC || STEADYSTATE_MSEC - since_ss < 10) { |
138 | steadystate_check(); | |
8b6a404c | 139 | timespec_add_msec(&last_ss, since_ss); |
16e56d25 VF |
140 | if (since_ss > STEADYSTATE_MSEC) |
141 | next_ss = STEADYSTATE_MSEC - (since_ss - STEADYSTATE_MSEC); | |
142 | else | |
143 | next_ss = STEADYSTATE_MSEC; | |
c27cc65f | 144 | } else |
16e56d25 VF |
145 | next_ss = STEADYSTATE_MSEC - since_ss; |
146 | } | |
147 | ||
148 | msec_to_next_event = min(min(next_log, msec_to_next_event), next_ss); | |
e569ca6b | 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); |
a39fb9ea JA |
150 | |
151 | if (!is_backend) | |
152 | print_thread_status(); | |
153 | } | |
154 | ||
155 | fio_writeout_logs(false); | |
156 | ||
157 | sk_out_drop(); | |
158 | return NULL; | |
159 | } | |
160 | ||
971caeb1 | 161 | int helper_thread_create(struct fio_sem *startup_sem, struct sk_out *sk_out) |
a39fb9ea JA |
162 | { |
163 | struct helper_data *hd; | |
164 | int ret; | |
165 | ||
b3090ff4 | 166 | hd = scalloc(1, sizeof(*hd)); |
a39fb9ea JA |
167 | |
168 | setup_disk_util(); | |
16e56d25 | 169 | steadystate_setup(); |
a39fb9ea JA |
170 | |
171 | hd->sk_out = sk_out; | |
34febb23 JA |
172 | |
173 | ret = mutex_cond_init_pshared(&hd->lock, &hd->cond); | |
174 | if (ret) | |
f9e5b5ee | 175 | return 1; |
34febb23 | 176 | |
971caeb1 | 177 | hd->startup_sem = startup_sem; |
a39fb9ea | 178 | |
4f37732a BVA |
179 | DRD_IGNORE_VAR(helper_data); |
180 | ||
a39fb9ea JA |
181 | ret = pthread_create(&hd->thread, NULL, helper_thread_main, hd); |
182 | if (ret) { | |
183 | log_err("Can't create helper thread: %s\n", strerror(ret)); | |
184 | return 1; | |
185 | } | |
186 | ||
187 | helper_data = hd; | |
188 | ||
971caeb1 BVA |
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"); | |
a39fb9ea JA |
192 | return 0; |
193 | } |