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// 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 "rocksdb/utilities/memory_util.h"
#include "db/db_impl/db_impl.h"
namespace ROCKSDB_NAMESPACE {
Status MemoryUtil::GetApproximateMemoryUsageByType(
const std::vector<DB*>& dbs,
const std::unordered_set<const Cache*> cache_set,
std::map<MemoryUtil::UsageType, uint64_t>* usage_by_type) {
usage_by_type->clear();
// MemTable
for (auto* db : dbs) {
uint64_t usage = 0;
if (db->GetAggregatedIntProperty(DB::Properties::kSizeAllMemTables,
&usage)) {
(*usage_by_type)[MemoryUtil::kMemTableTotal] += usage;
}
if (db->GetAggregatedIntProperty(DB::Properties::kCurSizeAllMemTables,
&usage)) {
(*usage_by_type)[MemoryUtil::kMemTableUnFlushed] += usage;
}
}
// Table Readers
for (auto* db : dbs) {
uint64_t usage = 0;
if (db->GetAggregatedIntProperty(DB::Properties::kEstimateTableReadersMem,
&usage)) {
(*usage_by_type)[MemoryUtil::kTableReadersTotal] += usage;
}
}
// Cache
for (const auto* cache : cache_set) {
if (cache != nullptr) {
(*usage_by_type)[MemoryUtil::kCacheTotal] += cache->GetUsage();
}
}
return Status::OK();
}
} // namespace ROCKSDB_NAMESPACE
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