int sx_managerfree(sxmanager *m)
{
assert(sx_count(m) == 0);
sx_vpool_free(&m->pool);
ss_spinlockfree(&m->lock);
return 0;
}
uint64_t sx_max(sxmanager *m)
{
ss_spinlock(&m->lock);
uint64_t id = 0;
if (sx_count(m) > 0) {
ssrbnode *node = ss_rbmax(&m->i);
sx *max = sscast(node, sx, node);
id = max->id;
}
ss_spinunlock(&m->lock);
return id;
}
uint32_t sx_min(sxmanager *m)
{
ss_spinlock(&m->lock);
uint32_t id = 0;
if (sx_count(m) > 0) {
ssrbnode *node = ss_rbmin(&m->i);
sx *min = sscast(node, sx, node);
id = min->id;
}
ss_spinunlock(&m->lock);
return id;
}
uint64_t sx_vlsn(sxmanager *m)
{
ss_spinlock(&m->lock);
uint64_t vlsn;
if (sx_count(m) > 0) {
ssrbnode *node = ss_rbmin(&m->i);
sx *min = sscast(node, sx, node);
vlsn = min->vlsn;
} else {
vlsn = sr_seq(m->r->seq, SR_LSN);
}
ss_spinunlock(&m->lock);
return vlsn;
}
