{
uint64_t r;
- if (td->o.random_generator == FIO_RAND_GEN_TAUSWORTHE) {
- uint64_t lastb;
+ if (td->o.random_generator == FIO_RAND_GEN_TAUSWORTHE ||
+ td->o.random_generator == FIO_RAND_GEN_TAUSWORTHE64) {
+ uint64_t frand_max, lastb;
lastb = last_block(td, f, ddir);
if (!lastb)
return 1;
+ frand_max = rand_max(&td->random_state);
r = __rand(&td->random_state);
dprint(FD_RANDOM, "off rand %llu\n", (unsigned long long) r);
- *b = lastb * (r / ((uint64_t) FRAND_MAX + 1.0));
+ *b = lastb * (r / ((uint64_t) frand_max + 1.0));
} else {
uint64_t off = 0;
return 0;
if (td->runstate != TD_VERIFYING)
return 0;
- if (td->o.random_generator == FIO_RAND_GEN_TAUSWORTHE)
+ if (td->o.random_generator == FIO_RAND_GEN_TAUSWORTHE ||
+ td->o.random_generator == FIO_RAND_GEN_TAUSWORTHE64)
return 0;
return 1;
static int should_do_random(struct thread_data *td, enum fio_ddir ddir)
{
+ uint64_t frand_max;
unsigned int v;
unsigned long r;
if (td->o.perc_rand[ddir] == 100)
return 1;
+ frand_max = rand_max(&td->seq_rand_state[ddir]);
r = __rand(&td->seq_rand_state[ddir]);
- v = 1 + (int) (100.0 * (r / (FRAND_MAX + 1.0)));
+ v = 1 + (int) (100.0 * (r / (frand_max + 1.0)));
return v <= td->o.perc_rand[ddir];
}
int ddir = io_u->ddir;
unsigned int buflen = 0;
unsigned int minbs, maxbs;
+ uint64_t frand_max;
unsigned long r;
assert(ddir_rw(ddir));
if (!io_u_fits(td, io_u, minbs))
return 0;
+ frand_max = rand_max(&td->bsrange_state);
do {
r = __rand(&td->bsrange_state);
if (!td->o.bssplit_nr[ddir]) {
buflen = 1 + (unsigned int) ((double) maxbs *
- (r / (FRAND_MAX + 1.0)));
+ (r / (frand_max + 1.0)));
if (buflen < minbs)
buflen = minbs;
} else {
buflen = bsp->bs;
perc += bsp->perc;
- if ((r <= ((FRAND_MAX / 100L) * perc)) &&
+ if ((r <= ((frand_max / 100L) * perc)) &&
io_u_fits(td, io_u, buflen))
break;
}
static inline enum fio_ddir get_rand_ddir(struct thread_data *td)
{
+ uint64_t frand_max = rand_max(&td->rwmix_state);
unsigned int v;
unsigned long r;
r = __rand(&td->rwmix_state);
- v = 1 + (int) (100.0 * (r / (FRAND_MAX + 1.0)));
+ v = 1 + (int) (100.0 * (r / (frand_max + 1.0)));
if (v <= td->o.rwmix[DDIR_READ])
return DDIR_READ;
enum fio_file_flags goodf,
enum fio_file_flags badf)
{
+ uint64_t frand_max = rand_max(&td->next_file_state);
struct fio_file *f;
int fno;
r = __rand(&td->next_file_state);
fno = (unsigned int) ((double) td->o.nr_files
- * (r / (FRAND_MAX + 1.0)));
+ * (r / (frand_max + 1.0)));
f = td->files[fno];
if (fio_file_done(f))
*/
static struct frand_state *get_buf_state(struct thread_data *td)
{
+ uint64_t frand_max;
unsigned int v;
unsigned long r;
return &td->buf_state;
}
+ frand_max = rand_max(&td->dedupe_state);
r = __rand(&td->dedupe_state);
- v = 1 + (int) (100.0 * (r / (FRAND_MAX + 1.0)));
+ v = 1 + (int) (100.0 * (r / (frand_max + 1.0)));
if (v <= td->o.dedupe_percentage)
return &td->buf_state_prev;