static int
si_redistribute_index(si *index, sr *r, sdc *c, sinode *node)
{
svindex *vindex = si_nodeindex(node);
ssiter i;
ss_iterinit(sv_indexiter, &i);
ss_iteropen(sv_indexiter, &i, r, vindex, SS_GTE, NULL, 0);
while (ss_iterhas(sv_indexiter, &i)) {
sv *v = ss_iterof(sv_indexiter, &i);
int rc = ss_bufadd(&c->b, r->a, &v->v, sizeof(svv**));
if (ssunlikely(rc == -1))
return sr_oom_malfunction(r->e);
ss_iternext(sv_indexiter, &i);
}
if (ssunlikely(ss_bufused(&c->b) == 0))
return 0;
uint64_t now = ss_utime();
ss_iterinit(ss_bufiterref, &i);
ss_iteropen(ss_bufiterref, &i, &c->b, sizeof(svv*));
while (ss_iterhas(ss_bufiterref, &i)) {
svv *v = ss_iterof(ss_bufiterref, &i);
si_redistribute_set(index, r, now, v);
ss_iternext(ss_bufiterref, &i);
}
return 0;
}
static inline int
si_recovercomplete(sitrack *track, sr *r, si *index, ssbuf *buf)
{
/* prepare and build primary index */
ss_bufreset(buf);
ssrbnode *p = ss_rbmin(&track->i);
while (p) {
sinode *n = sscast(p, sinode, node);
int rc = ss_bufadd(buf, r->a, &n, sizeof(sinode*));
if (ssunlikely(rc == -1))
return sr_oom_malfunction(r->e);
p = ss_rbnext(&track->i, p);
}
ssiter i;
ss_iterinit(ss_bufiterref, &i);
ss_iteropen(ss_bufiterref, &i, buf, sizeof(sinode*));
while (ss_iterhas(ss_bufiterref, &i))
{
sinode *n = ss_iterof(ss_bufiterref, &i);
if (n->recover & SI_RDB_REMOVE) {
int rc = si_nodefree(n, r, 1);
if (ssunlikely(rc == -1))
return -1;
ss_iternext(ss_bufiterref, &i);
continue;
}
n->recover = SI_RDB;
si_insert(index, n);
si_plannerupdate(&index->p, SI_COMPACT|SI_BRANCH|SI_TEMP, n);
ss_iternext(ss_bufiterref, &i);
}
return 0;
}
static int
si_redistribute(si *index, sr *r, sdc *c, sinode *node, ssbuf *result)
{
(void)index;
svindex *vindex = si_nodeindex(node);
ssiter i;
ss_iterinit(sv_indexiter, &i);
ss_iteropen(sv_indexiter, &i, r, vindex, SS_GTE, NULL, 0);
while (ss_iterhas(sv_indexiter, &i))
{
sv *v = ss_iterof(sv_indexiter, &i);
int rc = ss_bufadd(&c->b, r->a, &v->v, sizeof(svv**));
if (ssunlikely(rc == -1))
return sr_oom_malfunction(r->e);
ss_iternext(sv_indexiter, &i);
}
if (ssunlikely(ss_bufused(&c->b) == 0))
return 0;
ss_iterinit(ss_bufiterref, &i);
ss_iteropen(ss_bufiterref, &i, &c->b, sizeof(svv*));
ssiter j;
ss_iterinit(ss_bufiterref, &j);
ss_iteropen(ss_bufiterref, &j, result, sizeof(sinode*));
sinode *prev = ss_iterof(ss_bufiterref, &j);
ss_iternext(ss_bufiterref, &j);
while (1)
{
sinode *p = ss_iterof(ss_bufiterref, &j);
if (p == NULL) {
assert(prev != NULL);
while (ss_iterhas(ss_bufiterref, &i)) {
svv *v = ss_iterof(ss_bufiterref, &i);
v->next = NULL;
sv_indexset(&prev->i0, r, v);
ss_iternext(ss_bufiterref, &i);
}
break;
}
while (ss_iterhas(ss_bufiterref, &i))
{
svv *v = ss_iterof(ss_bufiterref, &i);
v->next = NULL;
sdindexpage *page = sd_indexmin(&p->self.index);
int rc = sr_compare(r->scheme, sv_vpointer(v), v->size,
sd_indexpage_min(&p->self.index, page),
page->sizemin);
if (ssunlikely(rc >= 0))
break;
sv_indexset(&prev->i0, r, v);
ss_iternext(ss_bufiterref, &i);
}
if (ssunlikely(! ss_iterhas(ss_bufiterref, &i)))
break;
prev = p;
ss_iternext(ss_bufiterref, &j);
}
assert(ss_iterof(ss_bufiterref, &i) == NULL);
return 0;
}
void *st_document_generate(stgenerator *g, sf fmt, stlist *l, void *db,
uint32_t seed,
uint32_t seed_value)
{
svv *v = st_svv_seed(g, seed, seed_value);
if (ssunlikely(v == NULL))
return NULL;
assert(l->svv == 1);
int rc = ss_bufadd(&l->list, g->r->a, &v, sizeof(svv**));
if (ssunlikely(rc == -1)) {
sv_vfree(g->r, v);
return NULL;
}
void *o = sp_document(db);
t( o != NULL );
switch (fmt) {
case SF_KV: {
int i = 0;
while (i < g->r->scheme->count) {
rc = sp_setstring(o, g->r->scheme->parts[i].name,
sf_key(sv_vpointer(v), i),
sf_keysize(sv_vpointer(v), i));
t( rc == 0 );
i++;
}
if ((g->value_start + g->value_end) > 0) {
rc = sp_setstring(o, "value",
sf_value(g->r->fmt, sv_vpointer(v), g->r->scheme->count),
sf_valuesize(g->r->fmt, sv_vpointer(v), v->size,
g->r->scheme->count));
t( rc == 0 );
}
break;
}
case SF_DOCUMENT: {
char *vpointer = sv_vpointer(v);
int i = 0;
while (i < g->r->scheme->count) {
rc = sp_setstring(o, g->r->scheme->parts[i].name,
sf_key(vpointer, i),
sf_keysize(vpointer, i));
t( rc == 0 );
i++;
}
rc = sp_setstring(o, "value", vpointer, v->size);
t( rc == 0 );
break;
}
}
return o;
}
static inline int
si_split(si *index, sdc *c, ssbuf *result,
sinode *parent,
ssiter *i,
uint64_t size_node,
uint32_t size_stream,
uint64_t vlsn)
{
sr *r = index->r;
int count = 0;
int rc;
sdmergeconf mergeconf = {
.size_stream = size_stream,
.size_node = size_node,
.size_page = index->scheme->node_page_size,
.checksum = index->scheme->node_page_checksum,
.compression = index->scheme->compression,
.compression_key = index->scheme->compression_key,
.offset = 0,
.vlsn = vlsn,
.save_delete = 0,
.save_update = 0
};
sdmerge merge;
sd_mergeinit(&merge, r, i, &c->build, &c->update, &mergeconf);
while ((rc = sd_merge(&merge)) > 0)
{
sinode *n = si_nodenew(r);
if (ssunlikely(n == NULL))
goto error;
sdid id = {
.parent = parent->self.id.id,
.flags = 0,
.id = sr_seq(index->r->seq, SR_NSNNEXT)
};
rc = sd_mergecommit(&merge, &id);
if (ssunlikely(rc == -1))
goto error;
rc = si_nodecreate(n, r, index->scheme, &id, &merge.index, &c->build);
if (ssunlikely(rc == -1))
goto error;
rc = ss_bufadd(result, index->r->a, &n, sizeof(sinode*));
if (ssunlikely(rc == -1)) {
sr_oom_malfunction(index->r->e);
si_nodefree(n, r, 1);
goto error;
}
sd_buildreset(&c->build);
count++;
}
if (ssunlikely(rc == -1))
goto error;
return 0;
error:
si_splitfree(result, r);
sd_mergefree(&merge);
return -1;
}
int si_compaction(si *index, sdc *c, uint64_t vlsn,
sinode *node,
ssiter *stream, uint32_t size_stream)
{
sr *r = index->r;
ssbuf *result = &c->a;
ssiter i;
/* begin compaction.
*
* split merge stream into a number
* of a new nodes.
*/
int rc;
rc = si_split(index, c, result,
node, stream,
index->scheme->node_size,
size_stream,
vlsn);
if (ssunlikely(rc == -1))
return -1;
SS_INJECTION(r->i, SS_INJECTION_SI_COMPACTION_0,
si_splitfree(result, r);
sr_malfunction(r->e, "%s", "error injection");
return -1);
/* mask removal of a single node as a
* single node update */
int count = ss_bufused(result) / sizeof(sinode*);
int count_index;
si_lock(index);
count_index = index->n;
si_unlock(index);
sinode *n;
if (ssunlikely(count == 0 && count_index == 1))
{
n = si_bootstrap(index, node->self.id.id);
if (ssunlikely(n == NULL))
return -1;
rc = ss_bufadd(result, r->a, &n, sizeof(sinode*));
if (ssunlikely(rc == -1)) {
sr_oom_malfunction(r->e);
si_nodefree(n, r, 1);
return -1;
}
count++;
}
/* commit compaction changes */
si_lock(index);
svindex *j = si_nodeindex(node);
si_plannerremove(&index->p, SI_COMPACT|SI_BRANCH, node);
switch (count) {
case 0: /* delete */
si_remove(index, node);
si_redistribute_index(index, r, c, node);
uint32_t used = sv_indexused(j);
if (used) {
ss_quota(r->quota, SS_QREMOVE, used);
}
break;
case 1: /* self update */
n = *(sinode**)result->s;
n->i0 = *j;
n->used = sv_indexused(j);
si_nodelock(n);
si_replace(index, node, n);
si_plannerupdate(&index->p, SI_COMPACT|SI_BRANCH, n);
break;
default: /* split */
rc = si_redistribute(index, r, c, node, result);
if (ssunlikely(rc == -1)) {
si_unlock(index);
si_splitfree(result, r);
return -1;
}
ss_iterinit(ss_bufiterref, &i);
ss_iteropen(ss_bufiterref, &i, result, sizeof(sinode*));
n = ss_iterof(ss_bufiterref, &i);
n->used = sv_indexused(&n->i0);
si_nodelock(n);
si_replace(index, node, n);
si_plannerupdate(&index->p, SI_COMPACT|SI_BRANCH, n);
for (ss_iternext(ss_bufiterref, &i); ss_iterhas(ss_bufiterref, &i);
ss_iternext(ss_bufiterref, &i)) {
n = ss_iterof(ss_bufiterref, &i);
n->used = sv_indexused(&n->i0);
si_nodelock(n);
si_insert(index, n);
si_plannerupdate(&index->p, SI_COMPACT|SI_BRANCH, n);
}
break;
}
sv_indexinit(j);
si_unlock(index);
/* compaction completion */
/* seal nodes */
ss_iterinit(ss_bufiterref, &i);
ss_iteropen(ss_bufiterref, &i, result, sizeof(sinode*));
while (ss_iterhas(ss_bufiterref, &i))
{
n = ss_iterof(ss_bufiterref, &i);
if (index->scheme->sync) {
rc = si_nodesync(n, r);
if (ssunlikely(rc == -1))
return -1;
}
rc = si_nodeseal(n, r, index->scheme);
if (ssunlikely(rc == -1))
return -1;
SS_INJECTION(r->i, SS_INJECTION_SI_COMPACTION_3,
si_nodefree(node, r, 0);
sr_malfunction(r->e, "%s", "error injection");
return -1);
ss_iternext(ss_bufiterref, &i);
}
SS_INJECTION(r->i, SS_INJECTION_SI_COMPACTION_1,
si_nodefree(node, r, 0);
sr_malfunction(r->e, "%s", "error injection");
return -1);
/* gc old node */
rc = si_nodefree(node, r, 1);
if (ssunlikely(rc == -1))
return -1;
SS_INJECTION(r->i, SS_INJECTION_SI_COMPACTION_2,
sr_malfunction(r->e, "%s", "error injection");
return -1);
/* complete new nodes */
ss_iterinit(ss_bufiterref, &i);
ss_iteropen(ss_bufiterref, &i, result, sizeof(sinode*));
while (ss_iterhas(ss_bufiterref, &i))
{
n = ss_iterof(ss_bufiterref, &i);
rc = si_nodecomplete(n, r, index->scheme);
if (ssunlikely(rc == -1))
return -1;
SS_INJECTION(r->i, SS_INJECTION_SI_COMPACTION_4,
sr_malfunction(r->e, "%s", "error injection");
return -1);
ss_iternext(ss_bufiterref, &i);
}
/* unlock */
si_lock(index);
ss_iterinit(ss_bufiterref, &i);
ss_iteropen(ss_bufiterref, &i, result, sizeof(sinode*));
while (ss_iterhas(ss_bufiterref, &i))
{
n = ss_iterof(ss_bufiterref, &i);
si_nodeunlock(n);
ss_iternext(ss_bufiterref, &i);
}
si_unlock(index);
return 0;
}
static inline int
si_split(si *index, sdc *c, ssbuf *result,
sinode *parent,
ssiter *i,
uint64_t size_node,
uint64_t size_stream,
uint32_t stream,
uint64_t vlsn)
{
sr *r = &index->r;
uint32_t timestamp = ss_timestamp();
int rc;
sdmergeconf mergeconf = {
.stream = stream,
.size_stream = size_stream,
.size_node = size_node,
.size_page = index->scheme.compaction.node_page_size,
.checksum = index->scheme.compaction.node_page_checksum,
.expire = index->scheme.expire,
.timestamp = timestamp,
.compression = index->scheme.compression,
.compression_if = index->scheme.compression_if,
.direct_io = index->scheme.direct_io,
.direct_io_page_size = index->scheme.direct_io_page_size,
.vlsn = vlsn
};
sinode *n = NULL;
sdmerge merge;
rc = sd_mergeinit(&merge, r, i, &c->build, &c->build_index,
&c->upsert, &mergeconf);
if (ssunlikely(rc == -1))
return -1;
while ((rc = sd_merge(&merge)) > 0)
{
/* create new node */
uint64_t id = sr_seq(index->r.seq, SR_NSNNEXT);
n = si_nodenew(r, id, parent->id);
if (ssunlikely(n == NULL))
goto error;
rc = si_nodecreate(n, r, &index->scheme);
if (ssunlikely(rc == -1))
goto error;
/* write pages */
uint64_t offset;
offset = sd_iosize(&c->io, &n->file);
while ((rc = sd_mergepage(&merge, offset)) == 1) {
rc = sd_writepage(r, &n->file, &c->io, merge.build);
if (ssunlikely(rc == -1))
goto error;
offset = sd_iosize(&c->io, &n->file);
}
if (ssunlikely(rc == -1))
goto error;
offset = sd_iosize(&c->io, &n->file);
rc = sd_mergeend(&merge, offset);
if (ssunlikely(rc == -1))
goto error;
/* write index */
rc = sd_writeindex(r, &n->file, &c->io, &merge.index);
if (ssunlikely(rc == -1))
goto error;
/* mmap mode */
if (index->scheme.mmap) {
rc = si_nodemap(n, r);
if (ssunlikely(rc == -1))
goto error;
}
/* add node to the list */
rc = ss_bufadd(result, index->r.a, &n, sizeof(sinode*));
if (ssunlikely(rc == -1)) {
sr_oom_malfunction(index->r.e);
goto error;
}
n->index = merge.index;
}
if (ssunlikely(rc == -1))
goto error;
return 0;
error:
if (n)
si_nodefree(n, r, 0);
sd_mergefree(&merge);
si_splitfree(result, r);
return -1;
}
static int
si_merge(si *index, sdc *c, sinode *node,
uint64_t vlsn,
ssiter *stream,
uint64_t size_stream,
uint32_t n_stream)
{
sr *r = &index->r;
ssbuf *result = &c->a;
ssiter i;
/* begin compaction.
*
* Split merge stream into a number of
* a new nodes.
*/
int rc;
rc = si_split(index, c, result,
node, stream,
index->scheme.compaction.node_size,
size_stream,
n_stream,
vlsn);
if (ssunlikely(rc == -1))
return -1;
SS_INJECTION(r->i, SS_INJECTION_SI_COMPACTION_0,
si_splitfree(result, r);
sr_malfunction(r->e, "%s", "error injection");
return -1);
/* mask removal of a single node as a
* single node update */
int count = ss_bufused(result) / sizeof(sinode*);
int count_index;
si_lock(index);
count_index = index->n;
si_unlock(index);
sinode *n;
if (ssunlikely(count == 0 && count_index == 1))
{
n = si_bootstrap(index, node->id);
if (ssunlikely(n == NULL))
return -1;
rc = ss_bufadd(result, r->a, &n, sizeof(sinode*));
if (ssunlikely(rc == -1)) {
sr_oom_malfunction(r->e);
si_nodefree(n, r, 1);
return -1;
}
count++;
}
/* commit compaction changes */
si_lock(index);
svindex *j = si_nodeindex(node);
si_plannerremove(&index->p, node);
si_nodesplit(node);
switch (count) {
case 0: /* delete */
si_remove(index, node);
si_redistribute_index(index, r, c, node);
break;
case 1: /* self update */
n = *(sinode**)result->s;
n->i0 = *j;
n->used = j->used;
si_nodelock(n);
si_replace(index, node, n);
si_plannerupdate(&index->p, n);
break;
default: /* split */
rc = si_redistribute(index, r, c, node, result);
if (ssunlikely(rc == -1)) {
si_unlock(index);
si_splitfree(result, r);
return -1;
}
ss_iterinit(ss_bufiterref, &i);
ss_iteropen(ss_bufiterref, &i, result, sizeof(sinode*));
n = ss_iterof(ss_bufiterref, &i);
n->used = n->i0.used;
si_nodelock(n);
si_replace(index, node, n);
si_plannerupdate(&index->p, n);
for (ss_iternext(ss_bufiterref, &i); ss_iterhas(ss_bufiterref, &i);
ss_iternext(ss_bufiterref, &i)) {
n = ss_iterof(ss_bufiterref, &i);
n->used = n->i0.used;
si_nodelock(n);
si_insert(index, n);
si_plannerupdate(&index->p, n);
}
break;
}
sv_indexinit(j);
si_unlock(index);
/* compaction completion */
/* seal nodes */
ss_iterinit(ss_bufiterref, &i);
ss_iteropen(ss_bufiterref, &i, result, sizeof(sinode*));
while (ss_iterhas(ss_bufiterref, &i))
{
n = ss_iterof(ss_bufiterref, &i);
if (index->scheme.sync) {
rc = ss_filesync(&n->file);
if (ssunlikely(rc == -1)) {
sr_malfunction(r->e, "db file '%s' sync error: %s",
ss_pathof(&n->file.path),
strerror(errno));
return -1;
}
}
rc = si_noderename_seal(n, r, &index->scheme);
if (ssunlikely(rc == -1)) {
si_nodefree(node, r, 0);
return -1;
}
SS_INJECTION(r->i, SS_INJECTION_SI_COMPACTION_3,
si_nodefree(node, r, 0);
sr_malfunction(r->e, "%s", "error injection");
return -1);
ss_iternext(ss_bufiterref, &i);
}
SS_INJECTION(r->i, SS_INJECTION_SI_COMPACTION_1,
si_nodefree(node, r, 0);
sr_malfunction(r->e, "%s", "error injection");
return -1);
/* gc node */
uint16_t refs = si_noderefof(node);
if (sslikely(refs == 0)) {
rc = si_nodefree(node, r, 1);
if (ssunlikely(rc == -1))
return -1;
} else {
/* node concurrently being read, schedule for
* delayed removal */
si_nodegc(node, r, &index->scheme);
si_lock(index);
ss_listappend(&index->gc, &node->gc);
index->gc_count++;
si_unlock(index);
}
SS_INJECTION(r->i, SS_INJECTION_SI_COMPACTION_2,
sr_malfunction(r->e, "%s", "error injection");
return -1);
/* complete new nodes */
ss_iterinit(ss_bufiterref, &i);
ss_iteropen(ss_bufiterref, &i, result, sizeof(sinode*));
while (ss_iterhas(ss_bufiterref, &i))
{
n = ss_iterof(ss_bufiterref, &i);
rc = si_noderename_complete(n, r, &index->scheme);
if (ssunlikely(rc == -1))
return -1;
SS_INJECTION(r->i, SS_INJECTION_SI_COMPACTION_4,
sr_malfunction(r->e, "%s", "error injection");
return -1);
ss_iternext(ss_bufiterref, &i);
}
/* unlock */
si_lock(index);
ss_iterinit(ss_bufiterref, &i);
ss_iteropen(ss_bufiterref, &i, result, sizeof(sinode*));
while (ss_iterhas(ss_bufiterref, &i))
{
n = ss_iterof(ss_bufiterref, &i);
si_nodeunlock(n);
ss_iternext(ss_bufiterref, &i);
}
si_unlock(index);
return 0;
}
static inline int
si_rangebranch(siread *q, sinode *n, sibranch *b, svmerge *m)
{
sicachebranch *c = si_cachefollow(q->cache);
assert(c->branch == b);
/* iterate cache */
if (ss_iterhas(sd_read, &c->i)) {
svmergesrc *s = sv_mergeadd(m, &c->i);
si_readstat(q, 1, n, 1);
s->ptr = c;
return 1;
}
if (c->open) {
return 1;
}
if (q->cache_only) {
return 2;
}
c->open = 1;
/* choose compression type */
int compression;
ssfilterif *compression_if;
if (! si_branchis_root(b)) {
compression = q->index->scheme->compression_branch;
compression_if = q->index->scheme->compression_branch_if;
} else {
compression = q->index->scheme->compression;
compression_if = q->index->scheme->compression_if;
}
sdreadarg arg = {
.index = &b->index,
.buf = &c->buf_a,
.buf_xf = &c->buf_b,
.buf_read = &q->index->readbuf,
.index_iter = &c->index_iter,
.page_iter = &c->page_iter,
.use_memory = n->in_memory,
.use_mmap = q->index->scheme->mmap,
.use_mmap_copy = 1,
.use_compression = compression,
.compression_if = compression_if,
.has = 0,
.has_vlsn = 0,
.o = q->order,
.memory = &b->copy,
.mmap = &n->map,
.file = &n->file,
.r = q->r
};
ss_iterinit(sd_read, &c->i);
int rc = ss_iteropen(sd_read, &c->i, &arg, q->key, q->keysize);
int reads = sd_read_stat(&c->i);
si_readstat(q, 0, n, reads);
if (ssunlikely(rc == -1))
return -1;
if (ssunlikely(! ss_iterhas(sd_read, &c->i)))
return 0;
svmergesrc *s = sv_mergeadd(m, &c->i);
s->ptr = c;
return 1;
}
static inline int
si_range(siread *q)
{
assert(q->has == 0);
ssiter i;
ss_iterinit(si_iter, &i);
ss_iteropen(si_iter, &i, q->r, q->index, q->order, q->key, q->keysize);
sinode *node;
next_node:
node = ss_iterof(si_iter, &i);
if (ssunlikely(node == NULL))
return 0;
si_txtrack(q->x, node);
/* prepare sources */
svmerge *m = &q->merge;
int count = node->branch_count + 2 + 1;
int rc = sv_mergeprepare(m, q->r, count);
if (ssunlikely(rc == -1)) {
sr_errorreset(q->r->e);
return -1;
}
/* external source (upsert) */
svmergesrc *s;
sv upbuf_reserve;
ssbuf upbuf;
if (ssunlikely(q->upsert_v && q->upsert_v->v)) {
ss_bufinit_reserve(&upbuf, &upbuf_reserve, sizeof(upbuf_reserve));
ss_bufadd(&upbuf, NULL, (void*)&q->upsert_v, sizeof(sv*));
s = sv_mergeadd(m, NULL);
ss_iterinit(ss_bufiterref, &s->src);
ss_iteropen(ss_bufiterref, &s->src, &upbuf, sizeof(sv*));
}
/* in-memory indexes */
svindex *second;
svindex *first = si_nodeindex_priority(node, &second);
if (first->count) {
s = sv_mergeadd(m, NULL);
ss_iterinit(sv_indexiter, &s->src);
ss_iteropen(sv_indexiter, &s->src, q->r, first, q->order,
q->key, q->keysize);
}
if (ssunlikely(second && second->count)) {
s = sv_mergeadd(m, NULL);
ss_iterinit(sv_indexiter, &s->src);
ss_iteropen(sv_indexiter, &s->src, q->r, second, q->order,
q->key, q->keysize);
}
/* cache and branches */
rc = si_cachevalidate(q->cache, node);
if (ssunlikely(rc == -1)) {
sr_oom(q->r->e);
return -1;
}
sibranch *b = node->branch;
while (b) {
rc = si_rangebranch(q, node, b, m);
if (ssunlikely(rc == -1 || rc == 2))
return rc;
b = b->next;
}
/* merge and filter data stream */
ssiter j;
ss_iterinit(sv_mergeiter, &j);
ss_iteropen(sv_mergeiter, &j, q->r, m, q->order);
ssiter k;
ss_iterinit(sv_readiter, &k);
ss_iteropen(sv_readiter, &k, q->r, &j, &q->index->u, q->vlsn, 0);
sv *v = ss_iterof(sv_readiter, &k);
if (ssunlikely(v == NULL)) {
sv_mergereset(&q->merge);
ss_iternext(si_iter, &i);
goto next_node;
}
rc = 1;
/* convert upsert search to SS_EQ */
if (q->upsert_eq) {
rc = sr_compare(q->r->scheme, sv_pointer(v), sv_size(v),
q->key, q->keysize);
rc = rc == 0;
}
/* do prefix search */
if (q->prefix && rc) {
rc = sr_compareprefix(q->r->scheme, q->prefix, q->prefixsize,
sv_pointer(v),
sv_size(v));
}
if (sslikely(rc == 1)) {
if (ssunlikely(si_readdup(q, v) == -1))
return -1;
}
/* skip a possible duplicates from data sources */
ss_iternext(sv_readiter, &k);
return rc;
}
return sr_oom(r->e);
sdschemeheader *h = (sdschemeheader*)c->buf.s;
memset(h, 0, sizeof(sdschemeheader));
ss_bufadvance(&c->buf, sizeof(sdschemeheader));
return 0;
}
int sd_schemeadd(sdscheme *c, sr *r, uint8_t id, sstype type,
void *value, uint32_t size)
{
sdschemeopt opt = {
.type = type,
.id = id,
.size = size
};
int rc = ss_bufadd(&c->buf, r->a, &opt, sizeof(opt));
if (ssunlikely(rc == -1))
goto error;
rc = ss_bufadd(&c->buf, r->a, value, size);
if (ssunlikely(rc == -1))
goto error;
sdschemeheader *h = (sdschemeheader*)c->buf.s;
h->count++;
return 0;
error:
return sr_oom(r->e);
}
int sd_schemecommit(sdscheme *c, sr *r)
{
if (ssunlikely(ss_bufused(&c->buf) == 0))
static inline void
si_qrangebranch(siquery *q, sinode *n, sibranch *b, svmerge *m)
{
sicachebranch *cb = si_cachefollow(q->cache);
assert(cb->branch == b);
/* iterate cache */
if (ss_iterhas(si_read, &cb->i)) {
svmergesrc *s = sv_mergeadd(m, &cb->i);
q->index->read_cache++;
s->ptr = cb;
return;
}
if (cb->open) {
return;
}
cb->open = 1;
sireadarg arg = {
.scheme = q->index->scheme,
.index = q->index,
.n = n,
.b = b,
.buf = &cb->buf_a,
.buf_xf = &cb->buf_b,
.buf_read = &q->index->readbuf,
.index_iter = &cb->index_iter,
.page_iter = &cb->page_iter,
.vlsn = q->vlsn,
.has = 0,
.mmap_copy = 1,
.o = q->order,
.r = q->r
};
ss_iterinit(si_read, &cb->i);
int rc = ss_iteropen(si_read, &cb->i, &arg, q->key, q->keysize);
if (ssunlikely(rc == -1))
return;
if (ssunlikely(! ss_iterhas(si_read, &cb->i)))
return;
svmergesrc *s = sv_mergeadd(m, &cb->i);
s->ptr = cb;
}
static inline int
si_qrange(siquery *q)
{
ssiter i;
ss_iterinit(si_iter, &i);
ss_iteropen(si_iter, &i, q->r, q->index, q->order, q->key, q->keysize);
sinode *node;
next_node:
node = ss_iterof(si_iter, &i);
if (ssunlikely(node == NULL))
return 0;
/* prepare sources */
svmerge *m = &q->merge;
int count = node->branch_count + 2 + 1;
int rc = sv_mergeprepare(m, q->r, count);
if (ssunlikely(rc == -1)) {
sr_errorreset(q->r->e);
return -1;
}
/* external source (update) */
svmergesrc *s;
sv upbuf_reserve;
ssbuf upbuf;
if (ssunlikely(q->update_v && q->update_v->v)) {
ss_bufinit_reserve(&upbuf, &upbuf_reserve, sizeof(upbuf_reserve));
ss_bufadd(&upbuf, NULL, (void*)&q->update_v, sizeof(sv*));
s = sv_mergeadd(m, NULL);
ss_iterinit(ss_bufiterref, &s->src);
ss_iteropen(ss_bufiterref, &s->src, &upbuf, sizeof(sv*));
}
/* in-memory indexes */
svindex *second;
svindex *first = si_nodeindex_priority(node, &second);
if (first->count) {
s = sv_mergeadd(m, NULL);
ss_iterinit(sv_indexiter, &s->src);
ss_iteropen(sv_indexiter, &s->src, q->r, first, q->order,
q->key, q->keysize);
}
if (ssunlikely(second && second->count)) {
s = sv_mergeadd(m, NULL);
ss_iterinit(sv_indexiter, &s->src);
ss_iteropen(sv_indexiter, &s->src, q->r, second, q->order,
q->key, q->keysize);
}
/* cache and branches */
rc = si_cachevalidate(q->cache, node);
if (ssunlikely(rc == -1)) {
sr_oom(q->r->e);
return -1;
}
sibranch *b = node->branch;
while (b) {
si_qrangebranch(q, node, b, m);
b = b->next;
}
/* merge and filter data stream */
ssiter j;
ss_iterinit(sv_mergeiter, &j);
ss_iteropen(sv_mergeiter, &j, q->r, m, q->order);
ssiter k;
ss_iterinit(sv_readiter, &k);
ss_iteropen(sv_readiter, &k, q->r, &j, &q->index->u, q->vlsn, 0);
sv *v = ss_iterof(sv_readiter, &k);
if (ssunlikely(v == NULL)) {
sv_mergereset(&q->merge);
ss_iternext(si_iter, &i);
goto next_node;
}
rc = 1;
/* convert update search to SS_EQ */
if (q->update_eq) {
rc = sr_compare(q->r->scheme, sv_pointer(v), sv_size(v),
q->key, q->keysize);
rc = rc == 0;
}
/* do prefix search */
if (q->prefix && rc) {
rc = sr_compareprefix(q->r->scheme, q->prefix, q->prefixsize,
sv_pointer(v),
sv_size(v));
}
if (sslikely(rc == 1)) {
if (ssunlikely(si_querydup(q, v) == -1))
return -1;
}
/* skip a possible duplicates from data sources */
ss_iternext(sv_readiter, &k);
return rc;
}