fork of https://github.com/rust-rocksdb/rust-rocksdb for nextgraph
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
38 lines
1.2 KiB
38 lines
1.2 KiB
1 year ago
|
// 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;
|
||
|
|
}
|
||
|
|
} // namespace ROCKSDB_NAMESPACE
|