zircon/system/ulib/minfs/include/minfs/metrics.h

// Copyright 2019 The Fuchsia Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef ZIRCON_SYSTEM_ULIB_MINFS_METRICS_H_
#define ZIRCON_SYSTEM_ULIB_MINFS_METRICS_H_

#include <fbl/macros.h>
#include <storage-metrics/fs-metrics.h>

using storage_metrics::FsMetrics;

namespace minfs {

class MinfsMetrics : public FsMetrics {
public:
    DISALLOW_COPY_ASSIGN_AND_MOVE(MinfsMetrics);

    MinfsMetrics() = default;
    explicit MinfsMetrics(const fuchsia_minfs_Metrics* metrics);
    ~MinfsMetrics() = default;

    // Copies to fields of fidl structure the corresponding fields of MinfsMetrics
    void CopyToFidl(fuchsia_minfs_Metrics* metrics) const;

    // Prints the fields of MinfsMetrics and FsMetrics to file |stream|. Passes
    // |success| to FsMetrics::Dump. See FsMetrics::Dump.
    void Dump(FILE* stream, std::optional<bool> success = std::nullopt) const;

    std::atomic<uint64_t> initialized_vmos;
    std::atomic<uint32_t> init_dnum_count; // Top-level direct blocks only
    std::atomic<uint32_t> init_inum_count; // Top-level indirect blocks only
    std::atomic<uint32_t> init_dinum_count;
    std::atomic<uint64_t> init_user_data_size;
    std::atomic<uint64_t> init_user_data_ticks;
    std::atomic<uint64_t> vnodes_opened_cache_hit;
};
} // namespace minfs
#endif // ZIRCON_SYSTEM_ULIB_MINFS_METRICS_H_