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https://github.com/isar/libmdbx.git
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mdbx: доработка loose-пути в page_retire()
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This commit is contained in:
parent
ef460a9229
commit
7ffea70087
76
src/core.c
76
src/core.c
@ -4183,40 +4183,51 @@ __cold static void kill_page(MDBX_txn *txn, MDBX_page *mp, pgno_t pgno,
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}
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}
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/* Remove page from dirty list, etc */
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/* Remove page from dirty list, etc */
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static __inline void page_wash(MDBX_txn *txn, const size_t di,
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static __inline void page_wash(MDBX_txn *txn, size_t di, MDBX_page *const mp,
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MDBX_page *const mp, const size_t npages) {
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const size_t npages) {
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tASSERT(txn, (txn->mt_flags & MDBX_TXN_RDONLY) == 0);
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tASSERT(txn, (txn->mt_flags & MDBX_TXN_RDONLY) == 0);
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mp->mp_txnid = INVALID_TXNID;
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mp->mp_txnid = INVALID_TXNID;
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mp->mp_flags = P_BAD;
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mp->mp_flags = P_BAD;
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if (di) {
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if (txn->tw.dirtylist) {
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tASSERT(txn, txn->tw.dirtylist != nullptr);
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tASSERT(txn, (txn->mt_flags & MDBX_WRITEMAP) == 0 || MDBX_AVOID_MSYNC);
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tASSERT(txn, (txn->mt_flags & MDBX_WRITEMAP) == 0 || MDBX_AVOID_MSYNC);
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tASSERT(txn, di <= txn->tw.dirtylist->length &&
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tASSERT(txn,
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txn->tw.dirtylist->items[di].ptr == mp);
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MDBX_AVOID_MSYNC || (di && txn->tw.dirtylist->items[di].ptr == mp));
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if (!MDBX_AVOID_MSYNC || di) {
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dpl_remove_ex(txn, di, npages);
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dpl_remove_ex(txn, di, npages);
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txn->tw.dirtyroom++;
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txn->tw.dirtyroom++;
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tASSERT(txn, txn->tw.dirtyroom + txn->tw.dirtylist->length ==
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tASSERT(txn, txn->tw.dirtyroom + txn->tw.dirtylist->length ==
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(txn->mt_parent ? txn->mt_parent->tw.dirtyroom
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(txn->mt_parent ? txn->mt_parent->tw.dirtyroom
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: txn->mt_env->me_options.dp_limit));
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: txn->mt_env->me_options.dp_limit));
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if (!MDBX_AVOID_MSYNC || !(txn->mt_flags & MDBX_WRITEMAP)) {
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dpage_free(txn->mt_env, mp, npages);
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return;
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}
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}
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} else {
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} else {
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tASSERT(txn, (txn->mt_flags & MDBX_WRITEMAP));
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tASSERT(txn, (txn->mt_flags & MDBX_WRITEMAP) && !MDBX_AVOID_MSYNC && !di);
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if (txn->tw.dirtylist == nullptr) {
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tASSERT(txn, !MDBX_AVOID_MSYNC);
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txn->tw.writemap_dirty_npages -= (txn->tw.writemap_dirty_npages > npages)
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txn->tw.writemap_dirty_npages -= (txn->tw.writemap_dirty_npages > npages)
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? npages
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? npages
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: txn->tw.writemap_dirty_npages;
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: txn->tw.writemap_dirty_npages;
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}
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}
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}
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VALGRIND_MAKE_MEM_UNDEFINED(mp, PAGEHDRSZ);
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VALGRIND_MAKE_MEM_UNDEFINED(mp, PAGEHDRSZ);
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if (txn->mt_flags & MDBX_WRITEMAP) {
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VALGRIND_MAKE_MEM_NOACCESS(page_data(mp),
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VALGRIND_MAKE_MEM_NOACCESS(page_data(mp),
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pgno2bytes(txn->mt_env, npages) - PAGEHDRSZ);
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pgno2bytes(txn->mt_env, npages) - PAGEHDRSZ);
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MDBX_ASAN_POISON_MEMORY_REGION(page_data(mp),
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MDBX_ASAN_POISON_MEMORY_REGION(page_data(mp),
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pgno2bytes(txn->mt_env, npages) - PAGEHDRSZ);
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pgno2bytes(txn->mt_env, npages) - PAGEHDRSZ);
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} else
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}
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dpage_free(txn->mt_env, mp, npages);
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static __inline bool suitable4loose(const MDBX_txn *txn, pgno_t pgno) {
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/* TODO:
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* 1) при включенной "экономии последовательностей" проверить, что
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* страница не примыкает к какой-либо из уже находящийся в reclaimed.
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* 2) стоит подумать над тем, чтобы при большом loose-списке отбрасывать
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половину в reclaimed. */
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return txn->tw.loose_count < txn->mt_env->me_options.dp_loose_limit &&
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(!MDBX_ENABLE_REFUND ||
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/* skip pages near to the end in favor of compactification */
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txn->mt_next_pgno > pgno + txn->mt_env->me_options.dp_loose_limit ||
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txn->mt_next_pgno <= txn->mt_env->me_options.dp_loose_limit);
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}
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}
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/* Retire, loosen or free a single page.
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/* Retire, loosen or free a single page.
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@ -4316,7 +4327,8 @@ static int page_retire_ex(MDBX_cursor *mc, const pgno_t pgno,
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tASSERT(txn, !txn->tw.spilled.list || !search_spilled(txn, pgno));
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tASSERT(txn, !txn->tw.spilled.list || !search_spilled(txn, pgno));
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} else if (IS_MODIFIABLE(txn, mp)) {
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} else if (IS_MODIFIABLE(txn, mp)) {
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status = modifable;
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status = modifable;
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di = txn->tw.dirtylist ? dpl_exist(txn, pgno) : 0;
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if (txn->tw.dirtylist)
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di = dpl_exist(txn, pgno);
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tASSERT(txn, (txn->mt_flags & MDBX_WRITEMAP) || !IS_SPILLED(txn, mp));
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tASSERT(txn, (txn->mt_flags & MDBX_WRITEMAP) || !IS_SPILLED(txn, mp));
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tASSERT(txn, !txn->tw.spilled.list || !search_spilled(txn, pgno));
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tASSERT(txn, !txn->tw.spilled.list || !search_spilled(txn, pgno));
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} else if (IS_SHADOWED(txn, mp)) {
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} else if (IS_SHADOWED(txn, mp)) {
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@ -4370,7 +4382,7 @@ status_done:
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* Её МОЖНО вытолкнуть в нераспределенный хвост. */
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* Её МОЖНО вытолкнуть в нераспределенный хвост. */
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kind = "dirty";
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kind = "dirty";
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/* Remove from dirty list */
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/* Remove from dirty list */
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page_wash(txn, di, mp ? mp : pgno2page(txn->mt_env, pgno), npages);
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page_wash(txn, di, mp, npages);
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} else if (si) {
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} else if (si) {
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/* Страница пролита в этой транзакции, т.е. она аллоцирована
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/* Страница пролита в этой транзакции, т.е. она аллоцирована
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* и запачкана в этой или одной из родительских транзакций.
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* и запачкана в этой или одной из родительских транзакций.
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@ -4409,20 +4421,12 @@ status_done:
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}
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}
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if (status == modifable) {
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if (status == modifable) {
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if (di) {
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/* Dirty page from this transaction */
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/* Dirty page from this transaction */
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/* If suitable we can reuse it through loose list */
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/* If suitable we can reuse it through loose list */
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if (likely(
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if (likely(npages == 1 && suitable4loose(txn, pgno)) &&
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npages == 1 &&
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(di || !txn->tw.dirtylist)) {
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txn->tw.loose_count < txn->mt_env->me_options.dp_loose_limit &&
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(!MDBX_ENABLE_REFUND ||
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/* skip pages near to the end in favor of compactification */
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txn->mt_next_pgno >
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pgno + txn->mt_env->me_options.dp_loose_limit ||
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txn->mt_next_pgno <= txn->mt_env->me_options.dp_loose_limit))) {
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DEBUG("loosen dirty page %" PRIaPGNO, pgno);
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DEBUG("loosen dirty page %" PRIaPGNO, pgno);
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if (MDBX_DEBUG != 0 ||
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if (MDBX_DEBUG != 0 || unlikely(txn->mt_env->me_flags & MDBX_PAGEPERTURB))
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unlikely(txn->mt_env->me_flags & MDBX_PAGEPERTURB))
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memset(page_data(mp), -1, txn->mt_env->me_psize - PAGEHDRSZ);
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memset(page_data(mp), -1, txn->mt_env->me_psize - PAGEHDRSZ);
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mp->mp_txnid = INVALID_TXNID;
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mp->mp_txnid = INVALID_TXNID;
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mp->mp_flags = P_LOOSE;
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mp->mp_flags = P_LOOSE;
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@ -4459,21 +4463,18 @@ status_done:
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}
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}
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#if defined(MDBX_USE_VALGRIND) || defined(__SANITIZE_ADDRESS__)
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#if defined(MDBX_USE_VALGRIND) || defined(__SANITIZE_ADDRESS__)
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if (MDBX_DEBUG != 0 ||
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if (MDBX_DEBUG != 0 || unlikely(txn->mt_env->me_flags & MDBX_PAGEPERTURB))
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unlikely(txn->mt_env->me_flags & MDBX_PAGEPERTURB))
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#endif
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#endif
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kill_page(txn, mp, pgno, npages);
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kill_page(txn, mp, pgno, npages);
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if ((txn->mt_flags & MDBX_WRITEMAP) == 0) {
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if ((txn->mt_flags & MDBX_WRITEMAP) == 0) {
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VALGRIND_MAKE_MEM_NOACCESS(page_data(pgno2page(txn->mt_env, pgno)),
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VALGRIND_MAKE_MEM_NOACCESS(page_data(pgno2page(txn->mt_env, pgno)),
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pgno2bytes(txn->mt_env, npages) - PAGEHDRSZ);
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MDBX_ASAN_POISON_MEMORY_REGION(page_data(pgno2page(txn->mt_env, pgno)),
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pgno2bytes(txn->mt_env, npages) -
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pgno2bytes(txn->mt_env, npages) -
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PAGEHDRSZ);
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PAGEHDRSZ);
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MDBX_ASAN_POISON_MEMORY_REGION(
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page_data(pgno2page(txn->mt_env, pgno)),
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pgno2bytes(txn->mt_env, npages) - PAGEHDRSZ);
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}
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}
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}
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}
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skip_invalidate:;
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skip_invalidate:
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}
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/* wash dirty page */
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/* wash dirty page */
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page_wash(txn, di, mp, npages);
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page_wash(txn, di, mp, npages);
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@ -4990,6 +4991,7 @@ __cold static int txn_spill_slowpath(MDBX_txn *const txn, MDBX_cursor *const m0,
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dpl_clear(txn->tw.dirtylist);
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dpl_clear(txn->tw.dirtylist);
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txn->tw.dirtyroom = env->me_options.dp_limit - txn->tw.loose_count;
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txn->tw.dirtyroom = env->me_options.dp_limit - txn->tw.loose_count;
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for (MDBX_page *lp = txn->tw.loose_pages; lp != nullptr; lp = mp_next(lp)) {
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for (MDBX_page *lp = txn->tw.loose_pages; lp != nullptr; lp = mp_next(lp)) {
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tASSERT(txn, lp->mp_flags == P_LOOSE);
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rc = dpl_append(txn, lp->mp_pgno, lp, 1);
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rc = dpl_append(txn, lp->mp_pgno, lp, 1);
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if (unlikely(rc != MDBX_SUCCESS))
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if (unlikely(rc != MDBX_SUCCESS))
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goto bailout;
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goto bailout;
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@ -9188,8 +9190,6 @@ int mdbx_txn_begin_ex(MDBX_env *env, MDBX_txn *parent, MDBX_txn_flags_t flags,
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if (parent->tw.loose_count) {
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if (parent->tw.loose_count) {
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do {
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do {
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MDBX_page *lp = parent->tw.loose_pages;
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MDBX_page *lp = parent->tw.loose_pages;
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const size_t di = dpl_exist(parent, lp->mp_pgno);
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tASSERT(parent, di && parent->tw.dirtylist->items[di].ptr == lp);
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tASSERT(parent, lp->mp_flags == P_LOOSE);
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tASSERT(parent, lp->mp_flags == P_LOOSE);
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rc = pnl_insert_range(&parent->tw.relist, lp->mp_pgno, 1);
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rc = pnl_insert_range(&parent->tw.relist, lp->mp_pgno, 1);
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if (unlikely(rc != MDBX_SUCCESS))
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if (unlikely(rc != MDBX_SUCCESS))
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@ -9198,7 +9198,7 @@ int mdbx_txn_begin_ex(MDBX_env *env, MDBX_txn *parent, MDBX_txn_flags_t flags,
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VALGRIND_MAKE_MEM_DEFINED(&mp_next(lp), sizeof(MDBX_page *));
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VALGRIND_MAKE_MEM_DEFINED(&mp_next(lp), sizeof(MDBX_page *));
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parent->tw.loose_pages = mp_next(lp);
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parent->tw.loose_pages = mp_next(lp);
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/* Remove from dirty list */
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/* Remove from dirty list */
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page_wash(parent, di, lp, 1);
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page_wash(parent, dpl_exist(parent, lp->mp_pgno), lp, 1);
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} while (parent->tw.loose_pages);
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} while (parent->tw.loose_pages);
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parent->tw.loose_count = 0;
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parent->tw.loose_count = 0;
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#if MDBX_ENABLE_REFUND
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#if MDBX_ENABLE_REFUND
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@ -19339,8 +19339,6 @@ static int page_merge(MDBX_cursor *csrc, MDBX_cursor *cdst) {
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}
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}
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}
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}
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/* If not operating on GC, allow this page to be reused
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* in this txn. Otherwise just add to free list. */
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rc = page_retire(csrc, (MDBX_page *)psrc);
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rc = page_retire(csrc, (MDBX_page *)psrc);
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if (unlikely(rc))
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if (unlikely(rc))
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return rc;
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return rc;
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