c72e79a262
Summary: ... which is the default for CentOS 9 and Ubuntu 24, the latter of which is now available in GitHub Actions. Relevant CI job updated. Re-formatted all cc|c|h files except in third-party/, using ``` clang-format -i `git ls-files | grep -E '[.](cc|c|h)$' | grep -v third-party/` ``` Pull Request resolved: https://github.com/facebook/rocksdb/pull/13233 Test Plan: CI Reviewed By: jaykorean, archang19 Differential Revision: D67461638 Pulled By: pdillinger fbshipit-source-id: 0c9ac21a3f5eea6f5ade68bb6af7b6ba16c8b301
51 lines
2 KiB
C++
51 lines
2 KiB
C++
// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
|
|
// This source code is licensed under both the GPLv2 (found in the
|
|
// COPYING file in the root directory) and Apache 2.0 License
|
|
// (found in the LICENSE.Apache file in the root directory).
|
|
|
|
#include "db/snapshot_checker.h"
|
|
|
|
#include "port/lang.h"
|
|
#include "utilities/transactions/write_prepared_txn_db.h"
|
|
|
|
namespace ROCKSDB_NAMESPACE {
|
|
|
|
WritePreparedSnapshotChecker::WritePreparedSnapshotChecker(
|
|
WritePreparedTxnDB* txn_db)
|
|
: txn_db_(txn_db) {}
|
|
|
|
SnapshotCheckerResult WritePreparedSnapshotChecker::CheckInSnapshot(
|
|
SequenceNumber sequence, SequenceNumber snapshot_sequence) const {
|
|
bool snapshot_released = false;
|
|
// TODO(myabandeh): set min_uncommitted
|
|
bool in_snapshot = txn_db_->IsInSnapshot(
|
|
sequence, snapshot_sequence, kMinUnCommittedSeq, &snapshot_released);
|
|
if (snapshot_released) {
|
|
return SnapshotCheckerResult::kSnapshotReleased;
|
|
}
|
|
return in_snapshot ? SnapshotCheckerResult::kInSnapshot
|
|
: SnapshotCheckerResult::kNotInSnapshot;
|
|
}
|
|
|
|
DisableGCSnapshotChecker* DisableGCSnapshotChecker::Instance() {
|
|
STATIC_AVOID_DESTRUCTION(DisableGCSnapshotChecker, instance);
|
|
return &instance;
|
|
}
|
|
|
|
bool DataIsDefinitelyInSnapshot(SequenceNumber seqno, SequenceNumber snapshot,
|
|
const SnapshotChecker* snapshot_checker) {
|
|
return ((seqno) <= (snapshot) &&
|
|
(snapshot_checker == nullptr ||
|
|
LIKELY(snapshot_checker->CheckInSnapshot((seqno), (snapshot)) ==
|
|
SnapshotCheckerResult::kInSnapshot)));
|
|
}
|
|
|
|
bool DataIsDefinitelyNotInSnapshot(SequenceNumber seqno,
|
|
SequenceNumber snapshot,
|
|
const SnapshotChecker* snapshot_checker) {
|
|
return ((seqno) > (snapshot) ||
|
|
(snapshot_checker != nullptr &&
|
|
UNLIKELY(snapshot_checker->CheckInSnapshot((seqno), (snapshot)) ==
|
|
SnapshotCheckerResult::kNotInSnapshot)));
|
|
}
|
|
} // namespace ROCKSDB_NAMESPACE
|