sxstate sx_set_autocommit(sxmanager *m, sxindex *index, sx *x, svlog *log, svv *v)
{
if (sslikely(m->count_rw == 0)) {
sx_init(m, x, log);
svlogv lv;
lv.index_id = index->dsn;
lv.next = UINT32_MAX;
lv.v = v;
lv.ptr = NULL;
sv_logadd(x->log, index->r, &lv);
sr_seq(index->r->seq, SR_TSNNEXT);
sx_promote(x, SX_COMMIT);
return SX_COMMIT;
}
sx_begin(m, x, SX_RW, log, 0);
int rc = sx_set(x, index, v);
if (ssunlikely(rc == -1)) {
sx_rollback(x);
return SX_ROLLBACK;
}
sxstate s = sx_prepare(x, NULL, NULL);
switch (s) {
case SX_PREPARE:
s = sx_commit(x);
break;
case SX_LOCK:
s = sx_rollback(x);
break;
case SX_ROLLBACK:
break;
default:
assert(0);
}
return s;
}
sxstate sx_set_autocommit(sxmanager *m, sxindex *index, sx *x, svv *v)
{
if (sslikely(m->count_rw == 0)) {
sx_init(m, x);
svlogv lv;
lv.id = index->dsn;
lv.next = UINT32_MAX;
sv_init(&lv.v, &sv_vif, v, NULL);
sv_logadd(&x->log, m->r->a, &lv, index->ptr);
sr_seq(m->r->seq, SR_TSNNEXT);
return SXCOMMIT;
}
sx_begin(m, x, SXRW, 0);
int rc = sx_set(x, index, v);
if (ssunlikely(rc == -1)) {
sx_rollback(x);
return SXROLLBACK;
}
sxstate s = sx_prepare(x, NULL, NULL);
if (sslikely(s == SXPREPARE))
sx_commit(x);
else
if (s == SXLOCK)
sx_rollback(x);
return s;
}
static void
alloclogv(svlog *log, sr *r, uint64_t lsn, uint8_t flags, int key)
{
sfv pv;
pv.key = (char*)&key;
pv.r.size = sizeof(uint32_t);
pv.r.offset = 0;
svv *v = sv_vbuild(r, &pv, 1, NULL, 0);
v->lsn = lsn;
v->flags = flags;
svlogv logv;
logv.id = 0;
logv.next = 0;
sv_init(&logv.v, &sv_vif, v, NULL);
sv_logadd(log, r->a, &logv, NULL);
}
static void
alloclogv(svlog *log, sr *r, uint8_t flags, int key)
{
sfv pv[2];
pv[0].pointer = (char*)&key;
pv[0].size = sizeof(uint32_t);
pv[1].pointer = NULL;
pv[1].size = 0;
svv *v = sv_vbuild(r, pv);
v->flags = flags;
svlogv logv;
logv.id = 0;
logv.next = 0;
sv_init(&logv.v, &sv_vif, v, NULL);
sv_logadd(log, r->a, &logv, NULL);
}
int sx_set(sx *x, sxindex *index, svv *version)
{
sxmanager *m = x->manager;
sr *r = m->r;
if (! (version->flags & SVGET)) {
x->log_read = -1;
}
/* allocate mvcc container */
sxv *v = sx_valloc(m->asxv, version);
if (ssunlikely(v == NULL)) {
ss_quota(r->quota, SS_QREMOVE, sv_vsize(version));
sv_vfree(r, version);
return -1;
}
v->id = x->id;
v->index = index;
svlogv lv;
lv.id = index->dsn;
lv.next = UINT32_MAX;
sv_init(&lv.v, &sx_vif, v, NULL);
/* update concurrent index */
ssrbnode *n = NULL;
int rc = sx_match(&index->i, index->r->scheme,
sv_vpointer(version),
version->size,
&n);
if (ssunlikely(rc == 0 && n)) {
/* exists */
} else {
int pos = rc;
/* unique */
v->lo = sv_logcount(&x->log);
rc = sv_logadd(&x->log, r->a, &lv, index->ptr);
if (ssunlikely(rc == -1)) {
sr_oom(r->e);
goto error;
}
ss_rbset(&index->i, n, pos, &v->node);
return 0;
}
sxv *head = sscast(n, sxv, node);
/* match previous update made by current
* transaction */
sxv *own = sx_vmatch(head, x->id);
if (ssunlikely(own))
{
if (ssunlikely(version->flags & SVUPDATE)) {
sr_error(r->e, "%s", "only one update statement is "
"allowed per a transaction key");
goto error;
}
/* replace old document with the new one */
lv.next = sv_logat(&x->log, own->lo)->next;
v->lo = own->lo;
if (ssunlikely(sx_vaborted(own)))
sx_vabort(v);
sx_vreplace(own, v);
if (sslikely(head == own))
ss_rbreplace(&index->i, &own->node, &v->node);
/* update log */
sv_logreplace(&x->log, v->lo, &lv);
ss_quota(r->quota, SS_QREMOVE, sv_vsize(own->v));
sx_vfree(r, m->asxv, own);
return 0;
}
/* update log */
v->lo = sv_logcount(&x->log);
rc = sv_logadd(&x->log, r->a, &lv, index->ptr);
if (ssunlikely(rc == -1)) {
sr_oom(r->e);
goto error;
}
/* add version */
sx_vlink(head, v);
return 0;
error:
ss_quota(r->quota, SS_QREMOVE, sv_vsize(v->v));
sx_vfree(r, m->asxv, v);
return -1;
}
int sx_set(sx *x, sxindex *index, svv *version)
{
sxmanager *m = x->manager;
sr *r = index->r;
svlogv lv;
lv.index_id = index->dsn;
lv.next = UINT32_MAX;
lv.v = version;
lv.ptr = NULL;
/* allocate mvcc container */
sxv *v = sx_valloc(&m->pool, version);
if (ssunlikely(v == NULL)) {
sv_vunref(r, version);
return -1;
}
v->id = x->id;
v->index = index;
lv.ptr = v;
if (! (sv_vflags(version, index->r) & SVGET))
x->log_read = -1;
/* update concurrent index */
ssrbnode *n = NULL;
int rc;
rc = sx_match(&index->i, index->r->scheme,
sv_vpointer(version), 0, &n);
if (ssunlikely(rc == 0 && n)) {
/* exists */
} else {
int pos = rc;
/* unique */
v->lo = sv_logcount(x->log);
rc = sv_logadd(x->log, r, &lv);
if (ssunlikely(rc == -1)) {
sr_oom(r->e);
goto error;
}
ss_rbset(&index->i, n, pos, &v->node);
return 0;
}
sxv *head = sscast(n, sxv, node);
/* match previous update made by current
* transaction */
sxv *own = sx_vmatch(head, x->id);
if (ssunlikely(own))
{
if (ssunlikely(sv_vflags(version, index->r) & SVUPSERT)) {
sr_error(r->e, "%s", "only one upsert statement is "
"allowed per a transaction key");
goto error;
}
/* replace old document with the new one */
lv.next = sv_logat(x->log, own->lo)->next;
v->lo = own->lo;
if (ssunlikely(sx_vaborted(own)))
sx_vabort(v);
sx_vreplace(own, v);
if (sslikely(head == own))
ss_rbreplace(&index->i, &own->node, &v->node);
/* update log */
sv_logreplace(x->log, r, v->lo, &lv);
sx_vfree(&m->pool, r, own);
return 0;
}
/* update log */
v->lo = sv_logcount(x->log);
rc = sv_logadd(x->log, r, &lv);
if (ssunlikely(rc == -1)) {
sr_oom(r->e);
goto error;
}
/* add version */
sx_vlink(head, v);
return 0;
error:
sx_vfree(&m->pool, r, v);
return -1;
}
int sx_set(sx *t, sxindex *index, svv *version)
{
sxmanager *m = t->manager;
/* allocate mvcc container */
sxv *v = sx_valloc(m->asxv, version);
if (ssunlikely(v == NULL)) {
sv_vfree(m->a, version);
return -1;
}
v->id = t->id;
v->index = index;
svlogv lv;
lv.id = index->dsn;
lv.vgc = NULL;
lv.next = UINT32_MAX;
sv_init(&lv.v, &sx_vif, v, NULL);
/* update concurrent index */
ssrbnode *n = NULL;
int rc = sx_match(&index->i, index->scheme, sv_vpointer(version),
version->size, &n);
if (ssunlikely(rc == 0 && n)) {
/* exists */
} else {
/* unique */
v->lo = sv_logcount(&t->log);
if (ssunlikely((sv_logadd(&t->log, m->a, &lv, index->ptr)) == -1)) {
rc = sr_oom(index->r->e);
} else {
ss_rbset(&index->i, n, rc, &v->node);
rc = 0;
}
return rc;
}
sxv *head = sscast(n, sxv, node);
/* match previous update made by current
* transaction */
sxv *own = sx_vmatch(head, t->id);
if (ssunlikely(own))
{
if (ssunlikely(version->flags & SVUPDATE)) {
sr_error(index->r->e, "%s", "only one update statement is "
"allowed per a transaction key");
sx_vfree(m->a, m->asxv, v);
return -1;
}
/* replace old object with the new one */
lv.next = sv_logat(&t->log, own->lo)->next;
v->lo = own->lo;
sx_vreplace(own, v);
if (sslikely(head == own))
ss_rbreplace(&index->i, &own->node, &v->node);
/* update log */
sv_logreplace(&t->log, v->lo, &lv);
sx_vfree(m->a, m->asxv, own);
return 0;
}
/* update log */
rc = sv_logadd(&t->log, m->a, &lv, index->ptr);
if (ssunlikely(rc == -1)) {
sx_vfree(m->a, m->asxv, v);
return sr_oom(index->r->e);
}
/* add version */
sx_vlink(head, v);
return 0;
}