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// Copyright (c) Meta Platforms, Inc. and affiliates.
//
// 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).
//
// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file. See the AUTHORS file for names of contributors.
#include "db/compaction/compaction_state.h"
namespace ROCKSDB_NAMESPACE {
Slice CompactionState::SmallestUserKey() {
for (const auto& sub_compact_state : sub_compact_states) {
Slice smallest = sub_compact_state.SmallestUserKey();
if (!smallest.empty()) {
return smallest;
}
}
// If there is no finished output, return an empty slice.
return Slice{nullptr, 0};
}
Slice CompactionState::LargestUserKey() {
for (auto it = sub_compact_states.rbegin(); it < sub_compact_states.rend();
++it) {
Slice largest = it->LargestUserKey();
if (!largest.empty()) {
return largest;
}
}
// If there is no finished output, return an empty slice.
return Slice{nullptr, 0};
}
void CompactionState::AggregateCompactionStats(
InternalStats::CompactionStatsFull& compaction_stats,
CompactionJobStats& compaction_job_stats) {
for (const auto& sc : sub_compact_states) {
sc.AggregateCompactionStats(compaction_stats);
compaction_job_stats.Add(sc.compaction_job_stats);
}
}
} // namespace ROCKSDB_NAMESPACE
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