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#ifndef FIO_IDLETIME_H
#define FIO_IDLETIME_H
#include <sys/time.h>
#include <sys/types.h>
#include "os/os.h"
#define CALIBRATE_RUNS 10
#define CALIBRATE_SCALE 1000
#define MAX_CPU_STR_LEN 32
enum {
IDLE_PROF_OPT_NONE,
IDLE_PROF_OPT_CALI, /* calibration only */
IDLE_PROF_OPT_SYSTEM,
IDLE_PROF_OPT_PERCPU
};
enum {
IDLE_PROF_STATUS_OK,
IDLE_PROF_STATUS_CALI_STOP,
IDLE_PROF_STATUS_PROF_STOP,
IDLE_PROF_STATUS_ABORT
};
struct idle_prof_thread {
pthread_t thread;
int cpu;
int state;
struct timespec tps;
struct timespec tpe;
double cali_time; /* microseconds to finish a unit work */
double loops;
double idleness;
unsigned char *data; /* bytes to be touched */
pthread_cond_t cond;
pthread_mutex_t init_lock;
pthread_mutex_t start_lock;
os_cpu_mask_t cpu_mask;
};
struct idle_prof_common {
struct idle_prof_thread *ipts;
int nr_cpus;
int status;
int opt;
double cali_mean;
double cali_stddev;
void *buf; /* single data allocation for all threads */
};
extern int fio_idle_prof_parse_opt(const char *);
extern void fio_idle_prof_init(void);
extern void fio_idle_prof_start(void);
extern void fio_idle_prof_stop(void);
extern void show_idle_prof_stats(int, struct json_object *, struct buf_output *);
extern void fio_idle_prof_cleanup(void);
#endif
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