Commit 41bbd206 authored by Yoni Fogel's avatar Yoni Fogel

Refs trac [t:6712], Refs Tokutek/ft-engine#40 When possible, optimize by only...

Refs trac [t:6712], Refs Tokutek/ft-engine#40 When possible, optimize by only checking left or right bound during a bounded query
parent 7dd6450a
...@@ -804,6 +804,7 @@ struct ft_cursor { ...@@ -804,6 +804,7 @@ struct ft_cursor {
bool disable_prefetching; bool disable_prefetching;
bool is_temporary; bool is_temporary;
int out_of_range_error; int out_of_range_error;
int direction;
TOKUTXN ttxn; TOKUTXN ttxn;
struct ft_cursor_leaf_info leaf_info; struct ft_cursor_leaf_info leaf_info;
}; };
......
...@@ -4102,6 +4102,7 @@ int toku_ft_cursor ( ...@@ -4102,6 +4102,7 @@ int toku_ft_cursor (
void toku_ft_cursor_remove_restriction(FT_CURSOR ftcursor) { void toku_ft_cursor_remove_restriction(FT_CURSOR ftcursor) {
ftcursor->out_of_range_error = 0; ftcursor->out_of_range_error = 0;
ftcursor->direction = 0;
} }
void void
...@@ -4141,6 +4142,7 @@ toku_ft_cursor_set_range_lock(FT_CURSOR cursor, const DBT *left, const DBT *righ ...@@ -4141,6 +4142,7 @@ toku_ft_cursor_set_range_lock(FT_CURSOR cursor, const DBT *left, const DBT *righ
// TOKUDB_FOUND_BUT_REJECTED is a DB_NOTFOUND with instructions to stop looking. (Faster) // TOKUDB_FOUND_BUT_REJECTED is a DB_NOTFOUND with instructions to stop looking. (Faster)
cursor->out_of_range_error = out_of_range_error == DB_NOTFOUND ? TOKUDB_FOUND_BUT_REJECTED : out_of_range_error; cursor->out_of_range_error = out_of_range_error == DB_NOTFOUND ? TOKUDB_FOUND_BUT_REJECTED : out_of_range_error;
cursor->direction = 0;
} }
void toku_ft_cursor_close(FT_CURSOR cursor) { void toku_ft_cursor_close(FT_CURSOR cursor) {
...@@ -4704,12 +4706,15 @@ static int cursor_check_restricted_range(FT_CURSOR c, bytevec key, ITEMLEN keyle ...@@ -4704,12 +4706,15 @@ static int cursor_check_restricted_range(FT_CURSOR c, bytevec key, ITEMLEN keyle
FAKE_DB(db, &ft->cmp_descriptor); FAKE_DB(db, &ft->cmp_descriptor);
DBT found_key; DBT found_key;
toku_fill_dbt(&found_key, key, keylen); toku_fill_dbt(&found_key, key, keylen);
if ((!c->left_is_neg_infty && ft->compare_fun(&db, &found_key, &c->range_lock_left_key) < 0) || if ((!c->left_is_neg_infty && c->direction <= 0 && ft->compare_fun(&db, &found_key, &c->range_lock_left_key) < 0) ||
(!c->right_is_pos_infty && ft->compare_fun(&db, &found_key, &c->range_lock_right_key) > 0)) { (!c->right_is_pos_infty && c->direction >= 0 && ft->compare_fun(&db, &found_key, &c->range_lock_right_key) > 0)) {
invariant(c->out_of_range_error); invariant(c->out_of_range_error);
return c->out_of_range_error; return c->out_of_range_error;
} }
} }
// Reset cursor direction to mitigate risk if some query type doesn't set the direction.
// It is always correct to check both bounds (which happens when direction==0) but it can be slower.
c->direction = 0;
return 0; return 0;
} }
...@@ -5388,6 +5393,7 @@ toku_ft_cursor_current(FT_CURSOR cursor, int op, FT_GET_CALLBACK_FUNCTION getf, ...@@ -5388,6 +5393,7 @@ toku_ft_cursor_current(FT_CURSOR cursor, int op, FT_GET_CALLBACK_FUNCTION getf,
{ {
if (ft_cursor_not_set(cursor)) if (ft_cursor_not_set(cursor))
return EINVAL; return EINVAL;
cursor->direction = 0;
if (op == DB_CURRENT) { if (op == DB_CURRENT) {
struct ft_cursor_search_struct bcss = {getf, getf_v, cursor, 0}; struct ft_cursor_search_struct bcss = {getf, getf_v, cursor, 0};
ft_search_t search; ft_search_init(&search, ft_cursor_compare_set, FT_SEARCH_LEFT, &cursor->key, cursor->ft_handle); ft_search_t search; ft_search_init(&search, ft_cursor_compare_set, FT_SEARCH_LEFT, &cursor->key, cursor->ft_handle);
...@@ -5401,6 +5407,7 @@ toku_ft_cursor_current(FT_CURSOR cursor, int op, FT_GET_CALLBACK_FUNCTION getf, ...@@ -5401,6 +5407,7 @@ toku_ft_cursor_current(FT_CURSOR cursor, int op, FT_GET_CALLBACK_FUNCTION getf,
int int
toku_ft_cursor_first(FT_CURSOR cursor, FT_GET_CALLBACK_FUNCTION getf, void *getf_v) toku_ft_cursor_first(FT_CURSOR cursor, FT_GET_CALLBACK_FUNCTION getf, void *getf_v)
{ {
cursor->direction = 0;
ft_search_t search; ft_search_init(&search, ft_cursor_compare_one, FT_SEARCH_LEFT, 0, cursor->ft_handle); ft_search_t search; ft_search_init(&search, ft_cursor_compare_one, FT_SEARCH_LEFT, 0, cursor->ft_handle);
int r = ft_cursor_search(cursor, &search, getf, getf_v, false); int r = ft_cursor_search(cursor, &search, getf, getf_v, false);
ft_search_finish(&search); ft_search_finish(&search);
...@@ -5410,6 +5417,7 @@ toku_ft_cursor_first(FT_CURSOR cursor, FT_GET_CALLBACK_FUNCTION getf, void *getf ...@@ -5410,6 +5417,7 @@ toku_ft_cursor_first(FT_CURSOR cursor, FT_GET_CALLBACK_FUNCTION getf, void *getf
int int
toku_ft_cursor_last(FT_CURSOR cursor, FT_GET_CALLBACK_FUNCTION getf, void *getf_v) toku_ft_cursor_last(FT_CURSOR cursor, FT_GET_CALLBACK_FUNCTION getf, void *getf_v)
{ {
cursor->direction = 0;
ft_search_t search; ft_search_init(&search, ft_cursor_compare_one, FT_SEARCH_RIGHT, 0, cursor->ft_handle); ft_search_t search; ft_search_init(&search, ft_cursor_compare_one, FT_SEARCH_RIGHT, 0, cursor->ft_handle);
int r = ft_cursor_search(cursor, &search, getf, getf_v, false); int r = ft_cursor_search(cursor, &search, getf, getf_v, false);
ft_search_finish(&search); ft_search_finish(&search);
...@@ -5459,6 +5467,7 @@ ft_cursor_shortcut ( ...@@ -5459,6 +5467,7 @@ ft_cursor_shortcut (
val val
); );
cursor->direction = direction;
r = cursor_check_restricted_range(cursor, *key, *keylen); r = cursor_check_restricted_range(cursor, *key, *keylen);
if (r==0) { if (r==0) {
r = getf(*keylen, *key, *vallen, *val, getf_v, false); r = getf(*keylen, *key, *vallen, *val, getf_v, false);
...@@ -5482,6 +5491,7 @@ ft_cursor_shortcut ( ...@@ -5482,6 +5491,7 @@ ft_cursor_shortcut (
int int
toku_ft_cursor_next(FT_CURSOR cursor, FT_GET_CALLBACK_FUNCTION getf, void *getf_v) toku_ft_cursor_next(FT_CURSOR cursor, FT_GET_CALLBACK_FUNCTION getf, void *getf_v)
{ {
cursor->direction = +1;
ft_search_t search; ft_search_init(&search, ft_cursor_compare_next, FT_SEARCH_LEFT, &cursor->key, cursor->ft_handle); ft_search_t search; ft_search_init(&search, ft_cursor_compare_next, FT_SEARCH_LEFT, &cursor->key, cursor->ft_handle);
int r = ft_cursor_search(cursor, &search, getf, getf_v, true); int r = ft_cursor_search(cursor, &search, getf, getf_v, true);
ft_search_finish(&search); ft_search_finish(&search);
...@@ -5528,6 +5538,7 @@ static int ft_cursor_compare_prev(ft_search_t *search, DBT *x) { ...@@ -5528,6 +5538,7 @@ static int ft_cursor_compare_prev(ft_search_t *search, DBT *x) {
int int
toku_ft_cursor_prev(FT_CURSOR cursor, FT_GET_CALLBACK_FUNCTION getf, void *getf_v) toku_ft_cursor_prev(FT_CURSOR cursor, FT_GET_CALLBACK_FUNCTION getf, void *getf_v)
{ {
cursor->direction = -1;
ft_search_t search; ft_search_init(&search, ft_cursor_compare_prev, FT_SEARCH_RIGHT, &cursor->key, cursor->ft_handle); ft_search_t search; ft_search_init(&search, ft_cursor_compare_prev, FT_SEARCH_RIGHT, &cursor->key, cursor->ft_handle);
int r = ft_cursor_search(cursor, &search, getf, getf_v, true); int r = ft_cursor_search(cursor, &search, getf, getf_v, true);
ft_search_finish(&search); ft_search_finish(&search);
...@@ -5542,6 +5553,7 @@ static int ft_cursor_compare_set_range(ft_search_t *search, DBT *x) { ...@@ -5542,6 +5553,7 @@ static int ft_cursor_compare_set_range(ft_search_t *search, DBT *x) {
int int
toku_ft_cursor_set(FT_CURSOR cursor, DBT *key, FT_GET_CALLBACK_FUNCTION getf, void *getf_v) toku_ft_cursor_set(FT_CURSOR cursor, DBT *key, FT_GET_CALLBACK_FUNCTION getf, void *getf_v)
{ {
cursor->direction = 0;
ft_search_t search; ft_search_init(&search, ft_cursor_compare_set_range, FT_SEARCH_LEFT, key, cursor->ft_handle); ft_search_t search; ft_search_init(&search, ft_cursor_compare_set_range, FT_SEARCH_LEFT, key, cursor->ft_handle);
int r = ft_cursor_search_eq_k_x(cursor, &search, getf, getf_v); int r = ft_cursor_search_eq_k_x(cursor, &search, getf, getf_v);
ft_search_finish(&search); ft_search_finish(&search);
...@@ -5551,6 +5563,7 @@ toku_ft_cursor_set(FT_CURSOR cursor, DBT *key, FT_GET_CALLBACK_FUNCTION getf, vo ...@@ -5551,6 +5563,7 @@ toku_ft_cursor_set(FT_CURSOR cursor, DBT *key, FT_GET_CALLBACK_FUNCTION getf, vo
int int
toku_ft_cursor_set_range(FT_CURSOR cursor, DBT *key, FT_GET_CALLBACK_FUNCTION getf, void *getf_v) toku_ft_cursor_set_range(FT_CURSOR cursor, DBT *key, FT_GET_CALLBACK_FUNCTION getf, void *getf_v)
{ {
cursor->direction = 0;
ft_search_t search; ft_search_init(&search, ft_cursor_compare_set_range, FT_SEARCH_LEFT, key, cursor->ft_handle); ft_search_t search; ft_search_init(&search, ft_cursor_compare_set_range, FT_SEARCH_LEFT, key, cursor->ft_handle);
int r = ft_cursor_search(cursor, &search, getf, getf_v, false); int r = ft_cursor_search(cursor, &search, getf, getf_v, false);
ft_search_finish(&search); ft_search_finish(&search);
...@@ -5565,6 +5578,7 @@ static int ft_cursor_compare_set_range_reverse(ft_search_t *search, DBT *x) { ...@@ -5565,6 +5578,7 @@ static int ft_cursor_compare_set_range_reverse(ft_search_t *search, DBT *x) {
int int
toku_ft_cursor_set_range_reverse(FT_CURSOR cursor, DBT *key, FT_GET_CALLBACK_FUNCTION getf, void *getf_v) toku_ft_cursor_set_range_reverse(FT_CURSOR cursor, DBT *key, FT_GET_CALLBACK_FUNCTION getf, void *getf_v)
{ {
cursor->direction = 0;
ft_search_t search; ft_search_init(&search, ft_cursor_compare_set_range_reverse, FT_SEARCH_RIGHT, key, cursor->ft_handle); ft_search_t search; ft_search_init(&search, ft_cursor_compare_set_range_reverse, FT_SEARCH_RIGHT, key, cursor->ft_handle);
int r = ft_cursor_search(cursor, &search, getf, getf_v, false); int r = ft_cursor_search(cursor, &search, getf, getf_v, false);
ft_search_finish(&search); ft_search_finish(&search);
......
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