rocksdb/utilities/blob_db/blob_db_gc_stats.h
Peter Dillinger bda8d93ba9 Fix and detect headers with missing dependencies (#8893)
Summary:
It's always annoying to find a header does not include its own
dependencies and only works when included after other includes. This
change adds `make check-headers` which validates that each header can
be included at the top of a file. Some headers are excluded e.g. because
of platform or external dependencies.

rocksdb_namespace.h had to be re-worked slightly to enable checking for
failure to include it. (ROCKSDB_NAMESPACE is a valid namespace name.)

Fixes mostly involve adding and cleaning up #includes, but for
FileTraceWriter, a constructor was out-of-lined to make a forward
declaration sufficient.

This check is not currently run with `make check` but is added to
CircleCI build-linux-unity since that one is already relatively fast.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/8893

Test Plan: existing tests and resolving issues detected by new check

Reviewed By: mrambacher

Differential Revision: D30823300

Pulled By: pdillinger

fbshipit-source-id: 9fff223944994c83c105e2e6496d24845dc8e572
2021-09-10 10:00:26 -07:00

57 lines
1.4 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).
//
#pragma once
#include <cstdint>
#include "rocksdb/rocksdb_namespace.h"
#ifndef ROCKSDB_LITE
namespace ROCKSDB_NAMESPACE {
namespace blob_db {
/**
* Statistics related to a single garbage collection pass (i.e. a single
* (sub)compaction).
*/
class BlobDBGarbageCollectionStats {
public:
uint64_t AllBlobs() const { return all_blobs_; }
uint64_t AllBytes() const { return all_bytes_; }
uint64_t RelocatedBlobs() const { return relocated_blobs_; }
uint64_t RelocatedBytes() const { return relocated_bytes_; }
uint64_t NewFiles() const { return new_files_; }
bool HasError() const { return error_; }
void AddBlob(uint64_t size) {
++all_blobs_;
all_bytes_ += size;
}
void AddRelocatedBlob(uint64_t size) {
++relocated_blobs_;
relocated_bytes_ += size;
}
void AddNewFile() { ++new_files_; }
void SetError() { error_ = true; }
private:
uint64_t all_blobs_ = 0;
uint64_t all_bytes_ = 0;
uint64_t relocated_blobs_ = 0;
uint64_t relocated_bytes_ = 0;
uint64_t new_files_ = 0;
bool error_ = false;
};
} // namespace blob_db
} // namespace ROCKSDB_NAMESPACE
#endif // ROCKSDB_LITE