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Code Issues

Cleanup and some economy of the stack space (in favor of the heap). Performance penalty isn't noticable.

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This commit is contained in:
dimitr 2003-02-22 17:09:02 +00:00
parent b05a4981cf
commit 18549a8e14
1 changed files with 27 additions and 10 deletions
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37
src/jrd/opt.cpp
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@ -2664,7 +2664,9 @@ static void find_best(TDBB tdbb,
USHORT stream,
USHORT position,
UCHAR * streams,
JRD_NOD plan_node, double cost, double cardinality)
JRD_NOD plan_node,
double cost,
double cardinality)
{
/**************************************
*
@ -3927,13 +3929,9 @@ static RSB gen_retrieval(TDBB tdbb,
**************************************/
IDX *idx;
static IDX *idx_walk[MAX_INDICES];
JRD_NOD node, opt_boolean;
SSHORT i, j, count, position;
static SSHORT conjunct_position[MAX_INDICES];
static SLONG idx_priority_level[MAX_INDICES];
Opt::opt_repeat *tail, *idx_tail, *idx_end;
static Opt::opt_repeat *matching_nodes[MAX_INDICES];
BOOLEAN full = FALSE;
SET_TDBB(tdbb);
#ifdef DEV_BUILD
@ -4015,6 +4013,9 @@ static RSB gen_retrieval(TDBB tdbb,
could be calculated via the index; currently we won't detect that case
*/
IDX **idx_walk = FB_NEW(*tdbb->tdbb_default) IDX*[MAX_INDICES];
SLONG *idx_priority_level = FB_NEW(*tdbb->tdbb_default) SLONG[MAX_INDICES];
for (i = 0, idx = csb_tail->csb_idx; i < csb_tail->csb_indices;
i++, idx = NEXT_IDX(idx->idx_rpt, idx->idx_count)) {
@ -4097,9 +4098,14 @@ static RSB gen_retrieval(TDBB tdbb,
SSHORT idx_walk_count =
sort_indices_by_priority(csb_tail, idx_walk, idx_priority_level);
delete[] idx_priority_level;
/* Walk through the indicies based on earlier calculated count and
when necessary build the index */
SSHORT *conjunct_position = FB_NEW(*tdbb->tdbb_default) SSHORT[MAX_INDICES];
Opt::opt_repeat **matching_nodes = FB_NEW(*tdbb->tdbb_default) Opt::opt_repeat*[MAX_INDICES];
for (i = 0; i < idx_walk_count; i++) {
idx = idx_walk[i];
@ -4176,6 +4182,11 @@ static RSB gen_retrieval(TDBB tdbb,
idx->idx_runtime_flags |= idx_used_with_and;
}
}
delete[] conjunct_position;
delete[] matching_nodes;
delete[] idx_walk;
}
if (outer_flag) {
@ -5163,8 +5174,7 @@ static JRD_NOD make_inference_node(CSB csb, JRD_NOD boolean, JRD_NOD arg1, JRD_N
}
static JRD_NOD make_inversion(TDBB tdbb,
OPT opt, JRD_NOD boolean, USHORT stream)
static JRD_NOD make_inversion(TDBB tdbb, OPT opt, JRD_NOD boolean, USHORT stream)
{
/**************************************
*
@ -5181,8 +5191,6 @@ static JRD_NOD make_inversion(TDBB tdbb,
**************************************/
IDX *idx;
static IDX *idx_walk[MAX_INDICES];
static SLONG idx_priority_level[MAX_INDICES];
JRD_NOD inversion, inversion2, node;
SSHORT i;
float compound_selectivity;
@ -5233,8 +5241,13 @@ static JRD_NOD make_inversion(TDBB tdbb,
accept_missing = TRUE;
used_in_compound = FALSE;
compound_selectivity = 1; /* Real maximum selectivity possible is 1 */
IDX **idx_walk = FB_NEW(*tdbb->tdbb_default) IDX*[MAX_INDICES];
SLONG *idx_priority_level = FB_NEW(*tdbb->tdbb_default) SLONG[MAX_INDICES];
idx = csb_tail->csb_idx;
if (opt->opt_count) {
for (i = 0; i < csb_tail->csb_indices; i++) {
idx_walk[i] = idx;
@ -5284,6 +5297,8 @@ static JRD_NOD make_inversion(TDBB tdbb,
SSHORT idx_walk_count =
sort_indices_by_priority(csb_tail, idx_walk, idx_priority_level);
delete[] idx_priority_level;
accept = TRUE;
idx = csb_tail->csb_idx;
if (opt->opt_count) {
@ -5307,6 +5322,8 @@ static JRD_NOD make_inversion(TDBB tdbb,
}
}
delete[] idx_walk;
if (!inversion)
inversion = OPT_make_dbkey(opt, boolean, stream);
@ -6293,7 +6310,7 @@ static SSHORT sort_indices_by_priority(csb_repeat * csb_tail,
selectivity are always used, because we don't have a clue how useful
they are in fact, so we should be optimistic in this case. Unique
indices are also always used, because they are good by definition,
regardless of their (probably old) selectivity value. */
regardless of their (probably old) selectivity values. */
IDX *idx = idx_csb[last_idx];
bool should_be_used = true;
if (!(idx->idx_flags & idx_unique) && idx->idx_selectivity && !(csb_tail->csb_plan)) {