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mdbx: новый код обновления GC.

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Леонид Юрьев (Leonid Yuriev)
2025-04-26 00:15:41 +03:00
parent 011c3072da
commit 2b36fd5974
24 changed files with 1493 additions and 905 deletions
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33
src/txn-basal.c
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@@ -62,6 +62,8 @@ __cold MDBX_txn *txn_basal_create(const size_t max_dbi) {
if (unlikely(!txn))
return txn;
rkl_init(&txn->wr.gc.reclaimed);
rkl_init(&txn->wr.gc.comeback);
txn->dbs = ptr_disp(txn, base);
txn->cursors = ptr_disp(txn->dbs, max_dbi * sizeof(txn->dbs[0]));
txn->dbi_seqs = ptr_disp(txn->cursors, max_dbi * sizeof(txn->cursors[0]));
@@ -82,7 +84,8 @@ __cold MDBX_txn *txn_basal_create(const size_t max_dbi) {
__cold void txn_basal_destroy(MDBX_txn *txn) {
dpl_free(txn);
txl_free(txn->wr.gc.retxl);
rkl_destroy(&txn->wr.gc.reclaimed);
rkl_destroy(&txn->wr.gc.comeback);
pnl_free(txn->wr.retired_pages);
pnl_free(txn->wr.spilled.list);
pnl_free(txn->wr.repnl);
@@ -121,10 +124,9 @@ int txn_basal_start(MDBX_txn *txn, unsigned flags) {
MDBX_PNL_SETSIZE(txn->wr.retired_pages, 0);
txn->wr.spilled.list = nullptr;
txn->wr.spilled.least_removed = 0;
txn->wr.gc.time_acc = 0;
txn->wr.gc.last_reclaimed = 0;
if (txn->wr.gc.retxl)
MDBX_PNL_SETSIZE(txn->wr.gc.retxl, 0);
txn->wr.gc.spent = 0;
tASSERT(txn, rkl_empty(&txn->wr.gc.reclaimed));
txn->env->gc.detent = 0;
env->txn = txn;
return MDBX_SUCCESS;
@@ -140,6 +142,8 @@ int txn_basal_end(MDBX_txn *txn, unsigned mode) {
env->txn = nullptr;
pnl_free(txn->wr.spilled.list);
txn->wr.spilled.list = nullptr;
rkl_clear_and_shrink(&txn->wr.gc.reclaimed);
rkl_clear_and_shrink(&txn->wr.gc.comeback);
eASSERT(env, txn->parent == nullptr);
pnl_shrink(&txn->wr.retired_pages);
@@ -258,9 +262,19 @@ int txn_basal_commit(MDBX_txn *txn, struct commit_timestamp *ts) {
}
gcu_t gcu_ctx;
int rc = gc_update_init(txn, &gcu_ctx);
int rc = gc_put_init(txn, &gcu_ctx);
if (likely(rc == MDBX_SUCCESS))
rc = gc_update(txn, &gcu_ctx);
#if MDBX_ENABLE_BIGFOOT
const txnid_t commit_txnid = gcu_ctx.bigfoot;
if (commit_txnid > txn->txnid)
TRACE("use @%" PRIaTXN " (+%zu) for commit bigfoot-txn", commit_txnid, (size_t)(commit_txnid - txn->txnid));
#else
const txnid_t commit_txnid = txn->txnid;
#endif
gc_put_destroy(&gcu_ctx);
if (ts)
ts->gc_cpu = osal_cputime(nullptr) - ts->gc_cpu;
if (unlikely(rc != MDBX_SUCCESS))
@@ -334,13 +348,6 @@ int txn_basal_commit(MDBX_txn *txn, struct commit_timestamp *ts) {
meta.canary = txn->canary;
memcpy(&meta.dxbid, &head.ptr_c->dxbid, sizeof(meta.dxbid));
txnid_t commit_txnid = txn->txnid;
#if MDBX_ENABLE_BIGFOOT
if (gcu_ctx.bigfoot > txn->txnid) {
commit_txnid = gcu_ctx.bigfoot;
TRACE("use @%" PRIaTXN " (+%zu) for commit bigfoot-txn", commit_txnid, (size_t)(commit_txnid - txn->txnid));
}
#endif
meta.unsafe_sign = DATASIGN_NONE;
meta_set_txnid(env, &meta, commit_txnid);