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Determine rtree levels at compile time.

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Rather than dynamically building a table to aid per level computations,
define a constant table at compile time.  Omit both high and low
insignificant bits.  Use one to three tree levels, depending on the
number of significant bits.
This commit is contained in:
Jason Evans 2017-02-06 13:17:12 -08:00
parent ff4db5014e
commit f5cf9b19c8
9 changed files with 244 additions and 268 deletions
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3
src/extent.c
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@ -1522,8 +1522,7 @@ extent_merge_wrapper(tsdn_t *tsdn, arena_t *arena,
bool
extent_boot(void) {
if (rtree_new(&extents_rtree, (unsigned)((ZU(1) << (LG_SIZEOF_PTR+3)) -
LG_PAGE))) {
if (rtree_new(&extents_rtree)) {
return true;
}