Commit | Line | Data |
---|---|---|
3c39a379 JA |
1 | #include <time.h> |
2 | #include <sys/time.h> | |
3 | ||
4 | #include "fio.h" | |
5 | ||
8b6a404c | 6 | static struct timespec genesis; |
fd841467 | 7 | static unsigned long ns_granularity; |
263e529f | 8 | |
8b6a404c | 9 | void timespec_add_msec(struct timespec *ts, unsigned int msec) |
a47591e4 | 10 | { |
8b6a404c | 11 | unsigned long adj_nsec = 1000000 * msec; |
d19251c4 | 12 | |
8b6a404c VF |
13 | ts->tv_nsec += adj_nsec; |
14 | if (adj_nsec >= 1000000000) { | |
15 | unsigned long adj_sec = adj_nsec / 1000000000UL; | |
d19251c4 | 16 | |
8b6a404c VF |
17 | ts->tv_nsec -= adj_sec * 1000000000UL; |
18 | ts->tv_sec += adj_sec; | |
d19251c4 | 19 | } |
8b6a404c VF |
20 | if (ts->tv_nsec >= 1000000000UL){ |
21 | ts->tv_nsec -= 1000000000UL; | |
22 | ts->tv_sec++; | |
a47591e4 JA |
23 | } |
24 | } | |
25 | ||
3c39a379 JA |
26 | /* |
27 | * busy looping version for the last few usec | |
28 | */ | |
9cc80b6d | 29 | uint64_t usec_spin(unsigned int usec) |
3c39a379 | 30 | { |
8b6a404c | 31 | struct timespec start; |
9cc80b6d | 32 | uint64_t t; |
3c39a379 | 33 | |
02bcaa8c | 34 | fio_gettime(&start, NULL); |
9cc80b6d | 35 | while ((t = utime_since_now(&start)) < usec) |
3c39a379 | 36 | nop; |
9cc80b6d JA |
37 | |
38 | return t; | |
3c39a379 JA |
39 | } |
40 | ||
9cc80b6d | 41 | uint64_t usec_sleep(struct thread_data *td, unsigned long usec) |
3c39a379 | 42 | { |
fd841467 | 43 | struct timespec req; |
8b6a404c | 44 | struct timespec tv; |
9cc80b6d | 45 | uint64_t t = 0; |
3c39a379 JA |
46 | |
47 | do { | |
fd841467 JA |
48 | unsigned long ts = usec; |
49 | ||
50 | if (usec < ns_granularity) { | |
9cc80b6d | 51 | t += usec_spin(usec); |
3c39a379 JA |
52 | break; |
53 | } | |
54 | ||
fd841467 | 55 | ts = usec - ns_granularity; |
3c39a379 | 56 | |
fd841467 JA |
57 | if (ts >= 1000000) { |
58 | req.tv_sec = ts / 1000000; | |
59 | ts -= 1000000 * req.tv_sec; | |
60 | } else | |
61 | req.tv_sec = 0; | |
62 | ||
63 | req.tv_nsec = ts * 1000; | |
64 | fio_gettime(&tv, NULL); | |
65 | ||
66 | if (nanosleep(&req, NULL) < 0) | |
3c39a379 JA |
67 | break; |
68 | ||
fd841467 | 69 | ts = utime_since_now(&tv); |
9cc80b6d | 70 | t += ts; |
fd841467 JA |
71 | if (ts >= usec) |
72 | break; | |
3c39a379 | 73 | |
fd841467 | 74 | usec -= ts; |
3c39a379 | 75 | } while (!td->terminate); |
9cc80b6d JA |
76 | |
77 | return t; | |
3c39a379 JA |
78 | } |
79 | ||
8b22c785 JA |
80 | uint64_t time_since_genesis(void) |
81 | { | |
82 | return time_since_now(&genesis); | |
83 | } | |
84 | ||
aa60bc58 | 85 | uint64_t mtime_since_genesis(void) |
263e529f JA |
86 | { |
87 | return mtime_since_now(&genesis); | |
88 | } | |
89 | ||
0de5b26f JA |
90 | uint64_t utime_since_genesis(void) |
91 | { | |
92 | return utime_since_now(&genesis); | |
93 | } | |
94 | ||
356014ff | 95 | bool in_ramp_time(struct thread_data *td) |
b29ee5b3 JA |
96 | { |
97 | return td->o.ramp_time && !td->ramp_time_over; | |
98 | } | |
99 | ||
ada8f235 JA |
100 | static void parent_update_ramp(struct thread_data *td) |
101 | { | |
102 | struct thread_data *parent = td->parent; | |
103 | ||
104 | if (!parent || parent->ramp_time_over) | |
105 | return; | |
106 | ||
107 | reset_all_stats(parent); | |
108 | parent->ramp_time_over = 1; | |
109 | td_set_runstate(parent, TD_RAMP); | |
110 | } | |
111 | ||
356014ff | 112 | bool ramp_time_over(struct thread_data *td) |
721938ae | 113 | { |
721938ae | 114 | if (!td->o.ramp_time || td->ramp_time_over) |
356014ff | 115 | return true; |
721938ae | 116 | |
8b6a404c | 117 | if (utime_since_now(&td->epoch) >= td->o.ramp_time) { |
721938ae | 118 | td->ramp_time_over = 1; |
b29ee5b3 JA |
119 | reset_all_stats(td); |
120 | td_set_runstate(td, TD_RAMP); | |
ada8f235 | 121 | parent_update_ramp(td); |
356014ff | 122 | return true; |
721938ae JA |
123 | } |
124 | ||
356014ff | 125 | return false; |
721938ae JA |
126 | } |
127 | ||
03e20d68 | 128 | void fio_time_init(void) |
263e529f | 129 | { |
fd841467 JA |
130 | int i; |
131 | ||
c223da83 JA |
132 | fio_clock_init(); |
133 | ||
fd841467 JA |
134 | /* |
135 | * Check the granularity of the nanosleep function | |
136 | */ | |
137 | for (i = 0; i < 10; i++) { | |
8b6a404c | 138 | struct timespec tv, ts; |
fd841467 JA |
139 | unsigned long elapsed; |
140 | ||
141 | fio_gettime(&tv, NULL); | |
142 | ts.tv_sec = 0; | |
143 | ts.tv_nsec = 1000; | |
144 | ||
145 | nanosleep(&ts, NULL); | |
146 | elapsed = utime_since_now(&tv); | |
147 | ||
148 | if (elapsed > ns_granularity) | |
149 | ns_granularity = elapsed; | |
150 | } | |
263e529f | 151 | } |
6043c579 | 152 | |
a2f77c9f JA |
153 | void set_genesis_time(void) |
154 | { | |
155 | fio_gettime(&genesis, NULL); | |
156 | } | |
157 | ||
3aea75b1 KC |
158 | void set_epoch_time(struct thread_data *td, int log_unix_epoch) |
159 | { | |
160 | fio_gettime(&td->epoch, NULL); | |
161 | if (log_unix_epoch) { | |
162 | struct timeval tv; | |
163 | gettimeofday(&tv, NULL); | |
164 | td->unix_epoch = (unsigned long long)(tv.tv_sec) * 1000 + | |
165 | (unsigned long long)(tv.tv_usec) / 1000; | |
166 | } | |
167 | } | |
168 | ||
8b6a404c | 169 | void fill_start_time(struct timespec *t) |
6043c579 JA |
170 | { |
171 | memcpy(t, &genesis, sizeof(genesis)); | |
172 | } |