gettime: improve gettimeofday() offload support
[fio.git] / gettime.h
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1#ifndef FIO_GETTIME_H
2#define FIO_GETTIME_H
3
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4#include "arch/arch.h"
5
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6/*
7 * Clock sources
8 */
9enum fio_cs {
10 CS_GTOD = 1,
11 CS_CGETTIME,
12 CS_CPUCLOCK,
01423eae 13 CS_INVAL,
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14};
15
16extern void fio_gettime(struct timeval *, void *);
17extern void fio_gtod_init(void);
18extern void fio_clock_init(void);
19extern int fio_start_gtod_thread(void);
7d11f871 20extern int fio_monotonic_clocktest(void);
5d879392 21extern void fio_local_clock_init(int);
a7346816 22
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23extern struct timeval *fio_tv;
24
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25static inline int fio_gettime_offload(struct timeval *tv)
26{
27 size_t last_sec;
28
29 if (!fio_tv)
30 return 0;
31
32 do {
33 read_barrier();
34 last_sec = tv->tv_sec = fio_tv->tv_sec;
35 tv->tv_usec = fio_tv->tv_usec;
36 } while (fio_tv->tv_sec != last_sec);
37
38 return 1;
39}
40
a7346816 41#endif