static int64_t cpu_scanhash(struct thr_info *thr, struct work *work, int64_t max_nonce) {
const int thr_id = thr->id;
const uint first_nonce = work->blk.nonce;
uint final_nonce, rc;
while(!thr->work_restart) {
final_nonce = work->blk.nonce;
#if (USE_NEOSCRYPT)
if(opt_neoscrypt) {
rc = scanhash_neoscrypt(thr, (uint *) work->data, (uint *) work->target,
(uint *) work->hash, work->blk.nonce, max_nonce, &final_nonce);
} else
#endif
#if (USE_SCRYPT)
if(opt_scrypt) {
rc = scanhash_altscrypt(thr, (uint *) work->data, (uint *) work->target,
(uint *) work->hash, work->blk.nonce, max_nonce, &final_nonce);
} else
#endif
{
uchar hash1[64];
memcpy(&hash1[0], &hash1_init[0], sizeof(hash1));
sha256_func func = sha256_funcs[opt_algo];
rc = (*func) (thr, work->midstate, work->data, hash1, work->hash,
work->target, max_nonce, &final_nonce, work->blk.nonce);
}
if(rc) {
applog(LOG_DEBUG, "CPU thread %d found nonce 0x%X",
dev_from_id(thr_id), final_nonce);
submit_work_async(work, NULL);
/* Set a new start nonce and keep hashing */
work->blk.nonce = final_nonce + 1;
} else break;
}
if(final_nonce != first_nonce) {
work->blk.nonce = final_nonce + 1;
return(final_nonce - first_nonce + 1);
}
return(0);
}
static int64_t cpu_scanhash(struct thr_info *thr, struct work *work, int64_t max_nonce)
{
const int thr_id = thr->id;
unsigned char hash1[64];
uint32_t first_nonce = work->blk.nonce;
uint32_t last_nonce;
bool rc;
hex2bin(hash1, "00000000000000000000000000000000000000000000000000000000000000000000008000000000000000000000000000000000000000000000000000010000", 64);
CPUSearch:
last_nonce = first_nonce;
rc = false;
/* scan nonces for a proof-of-work hash */
{
sha256_func func = sha256_funcs[opt_algo];
rc = (*func)(
thr,
work->midstate,
work->data,
hash1,
work->hash,
work->target,
max_nonce,
&last_nonce,
work->blk.nonce
);
}
/* if nonce found, submit work */
if (unlikely(rc)) {
applog(LOG_DEBUG, "CPU %d found something?", dev_from_id(thr_id));
submit_work_async(work, NULL);
work->blk.nonce = last_nonce + 1;
goto CPUSearch;
}
else
if (unlikely(last_nonce == first_nonce))
return 0;
work->blk.nonce = last_nonce + 1;
return last_nonce - first_nonce + 1;
}
