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gettime.h
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gettime.h
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#ifndef FIO_GETTIME_H
#define FIO_GETTIME_H
#include <sys/time.h>
#include "arch/arch.h"
#include "lib/seqlock.h"
/*
* Clock sources
*/
enum fio_cs {
CS_GTOD = 1,
CS_CGETTIME,
CS_CPUCLOCK,
CS_INVAL,
};
extern int fio_get_mono_time(struct timespec *);
extern void fio_gettime(struct timespec *, void *);
extern void fio_gtod_init(void);
extern void fio_clock_init(void);
extern int fio_start_gtod_thread(void);
extern int fio_monotonic_clocktest(int debug);
extern void fio_local_clock_init(void);
extern struct fio_ts {
struct seqlock seqlock;
struct timespec ts;
} *fio_ts;
static inline int fio_gettime_offload(struct timespec *ts)
{
unsigned int seq;
if (!fio_ts)
return 0;
do {
seq = read_seqlock_begin(&fio_ts->seqlock);
*ts = fio_ts->ts;
} while (read_seqlock_retry(&fio_ts->seqlock, seq));
return 1;
}
extern void fio_gtod_set_cpu(unsigned int cpu);
#endif