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mdbx: engage cursor tracking for all merge/rebalance operations.

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Assume this resolves https://github.com/erthink/libmdbx/issues/131.

Change-Id: I5111618a34d91d083b81245ac959b744a86c4495
This commit is contained in:
Leonid Yuriev 2020-11-03 20:31:12 +03:00
parent 37a1d546b7
commit 459e769844
1 changed files with 9 additions and 5 deletions
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14
src/core.c
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@ -14236,6 +14236,7 @@ static int mdbx_update_key(MDBX_cursor *mc, const MDBX_val *key) {
int ptr, i, nkeys, indx;
DKBUF;
mdbx_cassert(mc, cursor_is_tracked(mc));
indx = mc->mc_ki[mc->mc_top];
mp = mc->mc_pg[mc->mc_top];
node = page_node(mp, indx);
@ -14393,7 +14394,7 @@ static int mdbx_node_move(MDBX_cursor *csrc, MDBX_cursor *cdst, int fromleft) {
psrc = csrc->mc_pg[csrc->mc_top];
pdst = cdst->mc_pg[cdst->mc_top];
rc = mdbx_update_key(&mn, &key);
WITH_CURSOR_TRACKING(mn, rc = mdbx_update_key(&mn, &key));
if (unlikely(rc))
return rc;
} else {
@ -14608,6 +14609,8 @@ static int mdbx_page_merge(MDBX_cursor *csrc, MDBX_cursor *cdst) {
int rc;
mdbx_cassert(csrc, csrc != cdst);
mdbx_cassert(csrc, cursor_is_tracked(csrc));
mdbx_cassert(cdst, cursor_is_tracked(cdst));
const MDBX_page *const psrc = csrc->mc_pg[csrc->mc_top];
MDBX_page *pdst = cdst->mc_pg[cdst->mc_top];
mdbx_debug("merging page %" PRIaPGNO " into %" PRIaPGNO, psrc->mp_pgno,
@ -14869,6 +14872,7 @@ static void mdbx_cursor_copy(const MDBX_cursor *csrc, MDBX_cursor *cdst) {
* [in] mc Cursor pointing to the page where rebalancing should begin.
* Returns 0 on success, non-zero on failure. */
static int mdbx_rebalance(MDBX_cursor *mc) {
mdbx_cassert(mc, cursor_is_tracked(mc));
mdbx_cassert(mc, mc->mc_snum > 0);
mdbx_cassert(mc, mc->mc_snum < mc->mc_db->md_depth ||
IS_LEAF(mc->mc_pg[mc->mc_db->md_depth - 1]));
@ -15054,7 +15058,7 @@ static int mdbx_rebalance(MDBX_cursor *mc) {
mn.mc_ki[mn.mc_top - 1] = ki_pre_top + 1;
mn.mc_ki[mn.mc_top] = 0;
mc->mc_ki[mc->mc_top] = nkeys;
rc = mdbx_page_merge(&mn, mc);
WITH_CURSOR_TRACKING(mn, rc = mdbx_page_merge(&mn, mc));
if (likely(rc != MDBX_RESULT_TRUE)) {
mc->mc_ki[mc->mc_top] = ki_top;
mdbx_cassert(mc, rc || page_numkeys(mc->mc_pg[mc->mc_top]) >= minkeys);
@ -15069,7 +15073,7 @@ static int mdbx_rebalance(MDBX_cursor *mc) {
mn.mc_ki[mn.mc_top - 1] = ki_pre_top - 1;
mn.mc_ki[mn.mc_top] = (indx_t)(page_numkeys(left) - 1);
mc->mc_ki[mc->mc_top] = 0;
rc = mdbx_node_move(&mn, mc, true);
WITH_CURSOR_TRACKING(mn, rc = mdbx_node_move(&mn, mc, true));
if (likely(rc != MDBX_RESULT_TRUE)) {
mc->mc_ki[mc->mc_top] = ki_top + 1;
mdbx_cassert(mc, rc || page_numkeys(mc->mc_pg[mc->mc_top]) >= minkeys);
@ -15082,7 +15086,7 @@ static int mdbx_rebalance(MDBX_cursor *mc) {
mn.mc_ki[mn.mc_top - 1] = ki_pre_top + 1;
mn.mc_ki[mn.mc_top] = 0;
mc->mc_ki[mc->mc_top] = nkeys;
rc = mdbx_node_move(&mn, mc, false);
WITH_CURSOR_TRACKING(mn, rc = mdbx_node_move(&mn, mc, false));
if (likely(rc != MDBX_RESULT_TRUE)) {
mc->mc_ki[mc->mc_top] = ki_top;
mdbx_cassert(mc, rc || page_numkeys(mc->mc_pg[mc->mc_top]) >= minkeys);
@ -15123,7 +15127,7 @@ static int mdbx_rebalance(MDBX_cursor *mc) {
mn.mc_ki[mn.mc_top - 1] = ki_pre_top + 1;
mn.mc_ki[mn.mc_top] = 0;
mc->mc_ki[mc->mc_top] = nkeys;
rc = mdbx_page_merge(&mn, mc);
WITH_CURSOR_TRACKING(mn, rc = mdbx_page_merge(&mn, mc));
if (likely(rc != MDBX_RESULT_TRUE)) {
mc->mc_ki[mc->mc_top] = ki_top;
mdbx_cassert(mc, rc || page_numkeys(mc->mc_pg[mc->mc_top]) >= minkeys);