int sc_commit(sc *s, svlog *log, uint64_t lsn, int recover)
{
/* write-ahead log */
swtx tl;
sw_begin(s->wm, &tl, lsn, recover);
int rc = sw_write(&tl, log);
if (ssunlikely(rc == -1)) {
sw_rollback(&tl);
return -1;
}
sw_commit(&tl);
/* index */
svlogindex *i = (svlogindex*)log->index.s;
svlogindex *end = (svlogindex*)log->index.p;
for (; i < end; i++) {
if (i->count == 0)
continue;
si *index = i->r->ptr;
sitx x;
si_begin(&x, index);
si_write(&x, log, i, recover);
si_commit(&x);
}
return 0;
}
int se_reqwrite(sereq *r)
{
sereqarg *arg = &r->arg;
svlog *log = r->arg.log;
se *e = se_of(r->object);
/* set lsn */
sl_prepare(&e->lp, log, arg->lsn);
/* log write */
if (! arg->recover) {
sltx tl;
sl_begin(&e->lp, &tl);
int rc = sl_write(&tl, log);
if (ssunlikely(rc == -1)) {
sl_rollback(&tl);
r->rc = -1;
return -1;
}
sl_commit(&tl);
}
/* commit */
if (sslikely(arg->vlsn_generate))
arg->vlsn = sx_vlsn(&e->xm);
uint64_t now = ss_utime();
svlogindex *i = (svlogindex*)log->index.s;
svlogindex *end = (svlogindex*)log->index.p;
while (i < end) {
sedb *db = i->ptr;
sitx ti;
si_begin(&ti, &db->index, arg->vlsn, now, log, i);
si_write(&ti, arg->recover);
si_commit(&ti);
i++;
}
return 0;
}
int se_reqread(sereq *r)
{
sereqarg *arg = &r->arg;
sedb *db = (sedb*)r->db;
uint32_t keysize;
void *key;
if (sslikely(arg->v.v)) {
keysize = sv_size(&arg->v);
key = sv_pointer(&arg->v);
} else {
keysize = 0;
key = NULL;
}
char *prefix;
uint32_t prefixsize;
if (arg->vprefix.v) {
void *vptr = sv_vpointer(arg->vprefix.v);
prefix = sf_key(vptr, 0);
prefixsize = sf_keysize(vptr, 0);
} else {
prefix = NULL;
prefixsize = 0;
}
if (sslikely(arg->vlsn_generate))
arg->vlsn = sr_seq(db->r.seq, SR_LSN);
sitx x;
si_begin(&x, &db->index, 1);
siread q;
si_readopen(&q, &x, arg->cache,
arg->order,
arg->vlsn,
prefix,
prefixsize, key, keysize);
if (arg->update)
si_readupdate(&q, &arg->vup, arg->update_eq);
if (arg->cache_only)
si_readcache_only(&q);
if (arg->has)
si_readhas(&q);
r->rc = si_read(&q);
r->read_disk = q.read_disk;
r->read_cache = q.read_cache;
r->v = q.result.v;
si_readclose(&q);
si_commit(&x);
return r->rc;
}