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mdbx: ранняя/не-отложенная очистка GC (начало).

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This commit is contained in:
Леонид Юрьев (Leonid Yuriev)
2025-06-03 21:54:24 +03:00
parent 40af0565c5
commit bb37c93dd5
13 changed files with 97 additions and 85 deletions
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8
src/txn.c
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@@ -3,11 +3,6 @@
#include "internals.h"
MDBX_cursor *txn_gc_cursor(MDBX_txn *txn) {
tASSERT(txn, (txn->flags & (MDBX_TXN_BLOCKED | MDBX_TXN_RDONLY)) == 0);
return ptr_disp(txn->env->basal_txn, sizeof(MDBX_txn));
}
__hot bool txn_gc_detent(const MDBX_txn *const txn) {
const txnid_t detent = mvcc_shapshot_oldest(txn->env, txn->wr.troika.txnid[txn->wr.troika.prefer_steady]);
if (likely(detent == txn->env->gc.detent))
@@ -33,7 +28,7 @@ void txn_done_cursors(MDBX_txn *txn) {
}
int txn_shadow_cursors(const MDBX_txn *parent, const size_t dbi) {
tASSERT(parent, dbi > FREE_DBI && dbi < parent->n_dbi);
tASSERT(parent, dbi < parent->n_dbi);
MDBX_cursor *cursor = parent->cursors[dbi];
if (!cursor)
return MDBX_SUCCESS;
@@ -322,6 +317,7 @@ int txn_renew(MDBX_txn *txn, unsigned flags) {
rc = cursor_init(gc, txn, FREE_DBI);
if (rc != MDBX_SUCCESS)
goto bailout;
tASSERT(txn, txn->cursors[FREE_DBI] == nullptr);
}
dxb_sanitize_tail(env, txn);
return MDBX_SUCCESS;