/*
 * Copyright (C) 2018 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include <pixelstats/StatsHelper.h>
#include <pixelstats/SysfsCollector.h>

#define LOG_TAG "pixelstats-vendor"

#include <android-base/file.h>
#include <android-base/parseint.h>
#include <android-base/properties.h>
#include <android-base/strings.h>
#include <android/binder_manager.h>
#include <utils/Log.h>
#include <utils/Timers.h>

#include <mntent.h>
#include <sys/timerfd.h>
#include <cinttypes>
#include <string>

#ifndef ARRAY_SIZE
#define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0]))
#endif

namespace android {
namespace hardware {
namespace google {
namespace pixel {

using aidl::android::frameworks::stats::VendorAtom;
using aidl::android::frameworks::stats::VendorAtomValue;
using android::base::ReadFileToString;
using android::base::StartsWith;
using android::base::WriteStringToFile;
using android::hardware::google::pixel::PixelAtoms::BatteryCapacity;
using android::hardware::google::pixel::PixelAtoms::BlockStatsReported;
using android::hardware::google::pixel::PixelAtoms::BootStatsInfo;
using android::hardware::google::pixel::PixelAtoms::F2fsCompressionInfo;
using android::hardware::google::pixel::PixelAtoms::F2fsGcSegmentInfo;
using android::hardware::google::pixel::PixelAtoms::F2fsSmartIdleMaintEnabledStateChanged;
using android::hardware::google::pixel::PixelAtoms::F2fsStatsInfo;
using android::hardware::google::pixel::PixelAtoms::PcieLinkStatsReported;
using android::hardware::google::pixel::PixelAtoms::StorageUfsHealth;
using android::hardware::google::pixel::PixelAtoms::StorageUfsResetCount;
using android::hardware::google::pixel::PixelAtoms::ThermalDfsStats;
using android::hardware::google::pixel::PixelAtoms::VendorAudioHardwareStatsReported;
using android::hardware::google::pixel::PixelAtoms::VendorChargeCycles;
using android::hardware::google::pixel::PixelAtoms::VendorHardwareFailed;
using android::hardware::google::pixel::PixelAtoms::VendorLongIRQStatsReported;
using android::hardware::google::pixel::PixelAtoms::VendorResumeLatencyStats;
using android::hardware::google::pixel::PixelAtoms::VendorSlowIo;
using android::hardware::google::pixel::PixelAtoms::VendorSpeakerImpedance;
using android::hardware::google::pixel::PixelAtoms::VendorSpeakerStatsReported;
using android::hardware::google::pixel::PixelAtoms::VendorSpeechDspStat;
using android::hardware::google::pixel::PixelAtoms::VendorTempResidencyStats;
using android::hardware::google::pixel::PixelAtoms::ZramBdStat;
using android::hardware::google::pixel::PixelAtoms::ZramMmStat;

SysfsCollector::SysfsCollector(const struct SysfsPaths &sysfs_paths)
    : kSlowioReadCntPath(sysfs_paths.SlowioReadCntPath),
      kSlowioWriteCntPath(sysfs_paths.SlowioWriteCntPath),
      kSlowioUnmapCntPath(sysfs_paths.SlowioUnmapCntPath),
      kSlowioSyncCntPath(sysfs_paths.SlowioSyncCntPath),
      kCycleCountBinsPath(sysfs_paths.CycleCountBinsPath),
      kImpedancePath(sysfs_paths.ImpedancePath),
      kCodecPath(sysfs_paths.CodecPath),
      kCodec1Path(sysfs_paths.Codec1Path),
      kSpeechDspPath(sysfs_paths.SpeechDspPath),
      kBatteryCapacityCC(sysfs_paths.BatteryCapacityCC),
      kBatteryCapacityVFSOC(sysfs_paths.BatteryCapacityVFSOC),
      kUFSLifetimeA(sysfs_paths.UFSLifetimeA),
      kUFSLifetimeB(sysfs_paths.UFSLifetimeB),
      kUFSLifetimeC(sysfs_paths.UFSLifetimeC),
      kF2fsStatsPath(sysfs_paths.F2fsStatsPath),
      kZramMmStatPath("/sys/block/zram0/mm_stat"),
      kZramBdStatPath("/sys/block/zram0/bd_stat"),
      kEEPROMPath(sysfs_paths.EEPROMPath),
      kPowerMitigationStatsPath(sysfs_paths.MitigationPath),
      kSpeakerTemperaturePath(sysfs_paths.SpeakerTemperaturePath),
      kSpeakerExcursionPath(sysfs_paths.SpeakerExcursionPath),
      kSpeakerHeartbeatPath(sysfs_paths.SpeakerHeartBeatPath),
      kUFSErrStatsPath(sysfs_paths.UFSErrStatsPath),
      kBlockStatsLength(sysfs_paths.BlockStatsLength),
      kAmsRatePath(sysfs_paths.AmsRatePath),
      kThermalStatsPaths(sysfs_paths.ThermalStatsPaths),
      kCCARatePath(sysfs_paths.CCARatePath),
      kTempResidencyPath(sysfs_paths.TempResidencyPath),
      kLongIRQMetricsPath(sysfs_paths.LongIRQMetricsPath),
      kResumeLatencyMetricsPath(sysfs_paths.ResumeLatencyMetricsPath),
      kModemPcieLinkStatsPath(sysfs_paths.ModemPcieLinkStatsPath),
      kWifiPcieLinkStatsPath(sysfs_paths.WifiPcieLinkStatsPath) {}

bool SysfsCollector::ReadFileToInt(const std::string &path, int *val) {
    return ReadFileToInt(path.c_str(), val);
}

bool SysfsCollector::ReadFileToInt(const char *const path, int *val) {
    std::string file_contents;

    if (!ReadFileToString(path, &file_contents)) {
        ALOGE("Unable to read %s - %s", path, strerror(errno));
        return false;
    } else if (StartsWith(file_contents, "0x")) {
        if (sscanf(file_contents.c_str(), "0x%x", val) != 1) {
            ALOGE("Unable to convert %s to hex - %s", path, strerror(errno));
            return false;
        }
    } else if (sscanf(file_contents.c_str(), "%d", val) != 1) {
        ALOGE("Unable to convert %s to int - %s", path, strerror(errno));
        return false;
    }
    return true;
}

/**
 * Read the contents of kCycleCountBinsPath and report them via IStats HAL.
 * The contents are expected to be N buckets total, the nth of which indicates the
 * number of times battery %-full has been increased with the n/N% full bucket.
 */
void SysfsCollector::logBatteryChargeCycles(const std::shared_ptr<IStats> &stats_client) {
    std::string file_contents;
    int val;
    if (kCycleCountBinsPath == nullptr || strlen(kCycleCountBinsPath) == 0) {
        ALOGV("Battery charge cycle path not specified");
        return;
    }
    if (!ReadFileToString(kCycleCountBinsPath, &file_contents)) {
        ALOGE("Unable to read battery charge cycles %s - %s", kCycleCountBinsPath, strerror(errno));
        return;
    }

    const int32_t kChargeCyclesBucketsCount =
            VendorChargeCycles::kCycleBucket10FieldNumber - kVendorAtomOffset + 1;
    std::vector<int32_t> charge_cycles;
    std::stringstream stream(file_contents);
    while (stream >> val) {
        charge_cycles.push_back(val);
    }
    if (charge_cycles.size() > kChargeCyclesBucketsCount) {
        ALOGW("Got excessive battery charge cycles count %" PRIu64,
              static_cast<uint64_t>(charge_cycles.size()));
    } else {
        // Push 0 for buckets that do not exist.
        for (int bucketIdx = charge_cycles.size(); bucketIdx < kChargeCyclesBucketsCount;
             ++bucketIdx) {
            charge_cycles.push_back(0);
        }
    }

    std::replace(file_contents.begin(), file_contents.end(), ' ', ',');
    reportChargeCycles(stats_client, charge_cycles);
}

/**
 * Read the contents of kEEPROMPath and report them.
 */
void SysfsCollector::logBatteryEEPROM(const std::shared_ptr<IStats> &stats_client) {
    if (kEEPROMPath == nullptr || strlen(kEEPROMPath) == 0) {
        ALOGV("Battery EEPROM path not specified");
        return;
    }

    battery_EEPROM_reporter_.checkAndReport(stats_client, kEEPROMPath);
}

/**
 * Log battery health stats
 */
void SysfsCollector::logBatteryHealth(const std::shared_ptr<IStats> &stats_client) {
    battery_health_reporter_.checkAndReportStatus(stats_client);
}

/**
 * Check the codec for failures over the past 24hr.
 */
void SysfsCollector::logCodecFailed(const std::shared_ptr<IStats> &stats_client) {
    std::string file_contents;
    if (kCodecPath == nullptr || strlen(kCodecPath) == 0) {
        ALOGV("Audio codec path not specified");
        return;
    }
    if (!ReadFileToString(kCodecPath, &file_contents)) {
        ALOGE("Unable to read codec state %s - %s", kCodecPath, strerror(errno));
        return;
    }
    if (file_contents == "0") {
        return;
    } else {
        VendorHardwareFailed failure;
        failure.set_hardware_type(VendorHardwareFailed::HARDWARE_FAILED_CODEC);
        failure.set_hardware_location(0);
        failure.set_failure_code(VendorHardwareFailed::COMPLETE);
        reportHardwareFailed(stats_client, failure);
    }
}

/**
 * Check the codec1 for failures over the past 24hr.
 */
void SysfsCollector::logCodec1Failed(const std::shared_ptr<IStats> &stats_client) {
    std::string file_contents;
    if (kCodec1Path == nullptr || strlen(kCodec1Path) == 0) {
        ALOGV("Audio codec1 path not specified");
        return;
    }
    if (!ReadFileToString(kCodec1Path, &file_contents)) {
        ALOGE("Unable to read codec1 state %s - %s", kCodec1Path, strerror(errno));
        return;
    }
    if (file_contents == "0") {
        return;
    } else {
        ALOGE("%s report hardware fail", kCodec1Path);
        VendorHardwareFailed failure;
        failure.set_hardware_type(VendorHardwareFailed::HARDWARE_FAILED_CODEC);
        failure.set_hardware_location(1);
        failure.set_failure_code(VendorHardwareFailed::COMPLETE);
        reportHardwareFailed(stats_client, failure);
    }
}

void SysfsCollector::reportSlowIoFromFile(const std::shared_ptr<IStats> &stats_client,
                                          const char *path,
                                          const VendorSlowIo::IoOperation &operation_s) {
    std::string file_contents;
    if (path == nullptr || strlen(path) == 0) {
        ALOGV("slow_io path not specified");
        return;
    }
    if (!ReadFileToString(path, &file_contents)) {
        ALOGE("Unable to read slowio %s - %s", path, strerror(errno));
        return;
    } else {
        int32_t slow_io_count = 0;
        if (sscanf(file_contents.c_str(), "%d", &slow_io_count) != 1) {
            ALOGE("Unable to parse %s from file %s to int.", file_contents.c_str(), path);
        } else if (slow_io_count > 0) {
            VendorSlowIo slow_io;
            slow_io.set_operation(operation_s);
            slow_io.set_count(slow_io_count);
            reportSlowIo(stats_client, slow_io);
        }
        // Clear the stats
        if (!android::base::WriteStringToFile("0", path, true)) {
            ALOGE("Unable to clear SlowIO entry %s - %s", path, strerror(errno));
        }
    }
}

/**
 * Check for slow IO operations.
 */
void SysfsCollector::logSlowIO(const std::shared_ptr<IStats> &stats_client) {
    reportSlowIoFromFile(stats_client, kSlowioReadCntPath, VendorSlowIo::READ);
    reportSlowIoFromFile(stats_client, kSlowioWriteCntPath, VendorSlowIo::WRITE);
    reportSlowIoFromFile(stats_client, kSlowioUnmapCntPath, VendorSlowIo::UNMAP);
    reportSlowIoFromFile(stats_client, kSlowioSyncCntPath, VendorSlowIo::SYNC);
}

/**
 * Report the last-detected impedance of left & right speakers.
 */
void SysfsCollector::logSpeakerImpedance(const std::shared_ptr<IStats> &stats_client) {
    std::string file_contents;
    if (kImpedancePath == nullptr || strlen(kImpedancePath) == 0) {
        ALOGV("Audio impedance path not specified");
        return;
    }
    if (!ReadFileToString(kImpedancePath, &file_contents)) {
        ALOGE("Unable to read impedance path %s", kImpedancePath);
        return;
    }

    float left, right;
    if (sscanf(file_contents.c_str(), "%g,%g", &left, &right) != 2) {
        ALOGE("Unable to parse speaker impedance %s", file_contents.c_str());
        return;
    }
    VendorSpeakerImpedance left_obj;
    left_obj.set_speaker_location(0);
    left_obj.set_impedance(static_cast<int32_t>(left * 1000));

    VendorSpeakerImpedance right_obj;
    right_obj.set_speaker_location(1);
    right_obj.set_impedance(static_cast<int32_t>(right * 1000));

    reportSpeakerImpedance(stats_client, left_obj);
    reportSpeakerImpedance(stats_client, right_obj);
}

/**
 * Report the last-detected impedance, temperature and heartbeats of left & right speakers.
 */
void SysfsCollector::logSpeakerHealthStats(const std::shared_ptr<IStats> &stats_client) {
    std::string file_contents_impedance;
    std::string file_contents_temperature;
    std::string file_contents_excursion;
    std::string file_contents_heartbeat;
    int count, i;
    float impedance_ohm[4];
    float temperature_C[4];
    float excursion_mm[4];
    float heartbeat[4];

    if (kImpedancePath == nullptr || strlen(kImpedancePath) == 0) {
        ALOGD("Audio impedance path not specified");
        return;
    } else if (!ReadFileToString(kImpedancePath, &file_contents_impedance)) {
        ALOGD("Unable to read speaker impedance path %s", kImpedancePath);
        return;
    }

    if (kSpeakerTemperaturePath == nullptr || strlen(kSpeakerTemperaturePath) == 0) {
        ALOGD("Audio speaker temperature path not specified");
        return;
    } else if (!ReadFileToString(kSpeakerTemperaturePath, &file_contents_temperature)) {
        ALOGD("Unable to read speaker temperature path %s", kSpeakerTemperaturePath);
        return;
    }

    if (kSpeakerExcursionPath == nullptr || strlen(kSpeakerExcursionPath) == 0) {
        ALOGD("Audio speaker excursion path not specified");
        return;
    } else if (!ReadFileToString(kSpeakerExcursionPath, &file_contents_excursion)) {
        ALOGD("Unable to read speaker excursion path %s", kSpeakerExcursionPath);
        return;
    }

    if (kSpeakerHeartbeatPath == nullptr || strlen(kSpeakerHeartbeatPath) == 0) {
        ALOGD("Audio speaker heartbeat path not specified");
        return;
    } else if (!ReadFileToString(kSpeakerHeartbeatPath, &file_contents_heartbeat)) {
        ALOGD("Unable to read speaker heartbeat path %s", kSpeakerHeartbeatPath);
        return;
    }

    count = sscanf(file_contents_impedance.c_str(), "%g,%g,%g,%g", &impedance_ohm[0],
                   &impedance_ohm[1], &impedance_ohm[2], &impedance_ohm[3]);
    if (count <= 0)
        return;

    count = sscanf(file_contents_temperature.c_str(), "%g,%g,%g,%g", &temperature_C[0],
                   &temperature_C[1], &temperature_C[2], &temperature_C[3]);
    if (count <= 0)
        return;

    count = sscanf(file_contents_excursion.c_str(), "%g,%g,%g,%g", &excursion_mm[0],
                   &excursion_mm[1], &excursion_mm[2], &excursion_mm[3]);
    if (count <= 0)
        return;

    count = sscanf(file_contents_heartbeat.c_str(), "%g,%g,%g,%g", &heartbeat[0], &heartbeat[1],
                   &heartbeat[2], &heartbeat[3]);
    if (count <= 0)
        return;

    VendorSpeakerStatsReported obj[4];
    for (i = 0; i < count && i < 4; i++) {
        obj[i].set_speaker_location(i);
        obj[i].set_impedance(static_cast<int32_t>(impedance_ohm[i] * 1000));
        obj[i].set_max_temperature(static_cast<int32_t>(temperature_C[i] * 1000));
        obj[i].set_excursion(static_cast<int32_t>(excursion_mm[i] * 1000));
        obj[i].set_heartbeat(static_cast<int32_t>(heartbeat[i]));

        reportSpeakerHealthStat(stats_client, obj[i]);
    }
}

void SysfsCollector::logThermalStats(const std::shared_ptr<IStats> &stats_client) {
    thermal_stats_reporter_.logThermalStats(stats_client, kThermalStatsPaths);
}

/**
 * Report the Speech DSP state.
 */
void SysfsCollector::logSpeechDspStat(const std::shared_ptr<IStats> &stats_client) {
    std::string file_contents;
    if (kSpeechDspPath == nullptr || strlen(kSpeechDspPath) == 0) {
        ALOGV("Speech DSP path not specified");
        return;
    }
    if (!ReadFileToString(kSpeechDspPath, &file_contents)) {
        ALOGE("Unable to read speech dsp path %s", kSpeechDspPath);
        return;
    }

    int32_t up_time = 0, down_time = 0, crash_count = 0, recover_count = 0;
    if (sscanf(file_contents.c_str(), "%d,%d,%d,%d", &up_time, &down_time, &crash_count,
               &recover_count) != 4) {
        ALOGE("Unable to parse speech dsp stat %s", file_contents.c_str());
        return;
    }

    ALOGD("SpeechDSP uptime %d downtime %d crashcount %d recovercount %d", up_time, down_time,
          crash_count, recover_count);
    VendorSpeechDspStat dsp_stat;
    dsp_stat.set_total_uptime_millis(up_time);
    dsp_stat.set_total_downtime_millis(down_time);
    dsp_stat.set_total_crash_count(crash_count);
    dsp_stat.set_total_recover_count(recover_count);

    reportSpeechDspStat(stats_client, dsp_stat);
}

void SysfsCollector::logBatteryCapacity(const std::shared_ptr<IStats> &stats_client) {
    std::string file_contents;
    if (kBatteryCapacityCC == nullptr || strlen(kBatteryCapacityCC) == 0) {
        ALOGV("Battery Capacity CC path not specified");
        return;
    }
    if (kBatteryCapacityVFSOC == nullptr || strlen(kBatteryCapacityVFSOC) == 0) {
        ALOGV("Battery Capacity VFSOC path not specified");
        return;
    }
    int delta_cc_sum, delta_vfsoc_sum;
    if (!ReadFileToInt(kBatteryCapacityCC, &delta_cc_sum) ||
            !ReadFileToInt(kBatteryCapacityVFSOC, &delta_vfsoc_sum))
        return;

    // Load values array
    std::vector<VendorAtomValue> values(2);
    VendorAtomValue tmp;
    tmp.set<VendorAtomValue::intValue>(delta_cc_sum);
    values[BatteryCapacity::kDeltaCcSumFieldNumber - kVendorAtomOffset] = tmp;
    tmp.set<VendorAtomValue::intValue>(delta_vfsoc_sum);
    values[BatteryCapacity::kDeltaVfsocSumFieldNumber - kVendorAtomOffset] = tmp;

    // Send vendor atom to IStats HAL
    VendorAtom event = {.reverseDomainName = "",
                        .atomId = PixelAtoms::Atom::kBatteryCapacity,
                        .values = std::move(values)};
    const ndk::ScopedAStatus ret = stats_client->reportVendorAtom(event);
    if (!ret.isOk())
        ALOGE("Unable to report ChargeStats to Stats service");
}

void SysfsCollector::logUFSLifetime(const std::shared_ptr<IStats> &stats_client) {
    std::string file_contents;
    if (kUFSLifetimeA == nullptr || strlen(kUFSLifetimeA) == 0) {
        ALOGV("UFS lifetimeA path not specified");
        return;
    }
    if (kUFSLifetimeB == nullptr || strlen(kUFSLifetimeB) == 0) {
        ALOGV("UFS lifetimeB path not specified");
        return;
    }
    if (kUFSLifetimeC == nullptr || strlen(kUFSLifetimeC) == 0) {
        ALOGV("UFS lifetimeC path not specified");
        return;
    }

    int lifetimeA = 0, lifetimeB = 0, lifetimeC = 0;
    if (!ReadFileToInt(kUFSLifetimeA, &lifetimeA) ||
        !ReadFileToInt(kUFSLifetimeB, &lifetimeB) ||
        !ReadFileToInt(kUFSLifetimeC, &lifetimeC)) {
        ALOGE("Unable to read UFS lifetime : %s", strerror(errno));
        return;
    }

    // Load values array
    std::vector<VendorAtomValue> values(3);
    VendorAtomValue tmp;
    tmp.set<VendorAtomValue::intValue>(lifetimeA);
    values[StorageUfsHealth::kLifetimeAFieldNumber - kVendorAtomOffset] = tmp;
    tmp.set<VendorAtomValue::intValue>(lifetimeB);
    values[StorageUfsHealth::kLifetimeBFieldNumber - kVendorAtomOffset] = tmp;
    tmp.set<VendorAtomValue::intValue>(lifetimeC);
    values[StorageUfsHealth::kLifetimeCFieldNumber - kVendorAtomOffset] = tmp;

    // Send vendor atom to IStats HAL
    VendorAtom event = {.reverseDomainName = "",
                        .atomId = PixelAtoms::Atom::kStorageUfsHealth,
                        .values = std::move(values)};
    const ndk::ScopedAStatus ret = stats_client->reportVendorAtom(event);
    if (!ret.isOk()) {
        ALOGE("Unable to report UfsHealthStat to Stats service");
    }
}

void SysfsCollector::logUFSErrorStats(const std::shared_ptr<IStats> &stats_client) {
    int value, host_reset_count = 0;

    if (kUFSErrStatsPath.empty() || strlen(kUFSErrStatsPath.front().c_str()) == 0) {
        ALOGV("UFS host reset count specified");
        return;
    }

    for (int i = 0; i < kUFSErrStatsPath.size(); i++) {
        if (!ReadFileToInt(kUFSErrStatsPath[i], &value)) {
            ALOGE("Unable to read host reset count");
            return;
        }
        host_reset_count += value;
    }

    // Load values array
    std::vector<VendorAtomValue> values(1);
    VendorAtomValue tmp;
    tmp.set<VendorAtomValue::intValue>(host_reset_count);
    values[StorageUfsResetCount::kHostResetCountFieldNumber - kVendorAtomOffset] = tmp;

    // Send vendor atom to IStats HAL
    VendorAtom event = {.reverseDomainName = "",
                        .atomId = PixelAtoms::Atom::kUfsResetCount,
                        .values = std::move(values)};
    const ndk::ScopedAStatus ret = stats_client->reportVendorAtom(event);
    if (!ret.isOk()) {
        ALOGE("Unable to report UFS host reset count to Stats service");
    }
}

static std::string getUserDataBlock() {
    std::unique_ptr<std::FILE, int (*)(std::FILE*)> fp(setmntent("/proc/mounts", "re"), endmntent);
    if (fp == nullptr) {
        ALOGE("Error opening /proc/mounts");
        return "";
    }

    mntent* mentry;
    while ((mentry = getmntent(fp.get())) != nullptr) {
        if (strcmp(mentry->mnt_dir, "/data") == 0) {
            return std::string(basename(mentry->mnt_fsname));
        }
    }
    return "";
}

void SysfsCollector::logF2fsStats(const std::shared_ptr<IStats> &stats_client) {
    int dirty, free, cp_calls_fg, gc_calls_fg, moved_block_fg, vblocks;
    int cp_calls_bg, gc_calls_bg, moved_block_bg;

    if (kF2fsStatsPath == nullptr) {
        ALOGE("F2fs stats path not specified");
        return;
    }

    const std::string userdataBlock = getUserDataBlock();
    const std::string kF2fsStatsDir = kF2fsStatsPath + userdataBlock;

    if (!ReadFileToInt(kF2fsStatsDir + "/dirty_segments", &dirty)) {
        ALOGV("Unable to read dirty segments");
    }

    if (!ReadFileToInt(kF2fsStatsDir + "/free_segments", &free)) {
        ALOGV("Unable to read free segments");
    }

    if (!ReadFileToInt(kF2fsStatsDir + "/cp_foreground_calls", &cp_calls_fg)) {
        ALOGV("Unable to read cp_foreground_calls");
    }

    if (!ReadFileToInt(kF2fsStatsDir + "/cp_background_calls", &cp_calls_bg)) {
        ALOGV("Unable to read cp_background_calls");
    }

    if (!ReadFileToInt(kF2fsStatsDir + "/gc_foreground_calls", &gc_calls_fg)) {
        ALOGV("Unable to read gc_foreground_calls");
    }

    if (!ReadFileToInt(kF2fsStatsDir + "/gc_background_calls", &gc_calls_bg)) {
        ALOGV("Unable to read gc_background_calls");
    }

    if (!ReadFileToInt(kF2fsStatsDir + "/moved_blocks_foreground", &moved_block_fg)) {
        ALOGV("Unable to read moved_blocks_foreground");
    }

    if (!ReadFileToInt(kF2fsStatsDir + "/moved_blocks_background", &moved_block_bg)) {
        ALOGV("Unable to read moved_blocks_background");
    }

    if (!ReadFileToInt(kF2fsStatsDir + "/avg_vblocks", &vblocks)) {
        ALOGV("Unable to read avg_vblocks");
    }

    // Load values array
    std::vector<VendorAtomValue> values(9);
    VendorAtomValue tmp;
    tmp.set<VendorAtomValue::intValue>(dirty);
    values[F2fsStatsInfo::kDirtySegmentsFieldNumber - kVendorAtomOffset] = tmp;
    tmp.set<VendorAtomValue::intValue>(free);
    values[F2fsStatsInfo::kFreeSegmentsFieldNumber - kVendorAtomOffset] = tmp;
    tmp.set<VendorAtomValue::intValue>(cp_calls_fg);
    values[F2fsStatsInfo::kCpCallsFgFieldNumber - kVendorAtomOffset] = tmp;
    tmp.set<VendorAtomValue::intValue>(cp_calls_bg);
    values[F2fsStatsInfo::kCpCallsBgFieldNumber - kVendorAtomOffset] = tmp;
    tmp.set<VendorAtomValue::intValue>(gc_calls_fg);
    values[F2fsStatsInfo::kGcCallsFgFieldNumber - kVendorAtomOffset] = tmp;
    tmp.set<VendorAtomValue::intValue>(gc_calls_bg);
    values[F2fsStatsInfo::kGcCallsBgFieldNumber - kVendorAtomOffset] = tmp;
    tmp.set<VendorAtomValue::intValue>(moved_block_fg);
    values[F2fsStatsInfo::kMovedBlocksFgFieldNumber - kVendorAtomOffset] = tmp;
    tmp.set<VendorAtomValue::intValue>(moved_block_bg);
    values[F2fsStatsInfo::kMovedBlocksBgFieldNumber - kVendorAtomOffset] = tmp;
    tmp.set<VendorAtomValue::intValue>(vblocks);
    values[F2fsStatsInfo::kValidBlocksFieldNumber - kVendorAtomOffset] = tmp;

    // Send vendor atom to IStats HAL
    VendorAtom event = {.reverseDomainName = "",
                        .atomId = PixelAtoms::Atom::kF2FsStats,
                        .values = std::move(values)};
    const ndk::ScopedAStatus ret = stats_client->reportVendorAtom(event);
    if (!ret.isOk()) {
        ALOGE("Unable to report F2fs stats to Stats service");
    }
}

void SysfsCollector::logF2fsCompressionInfo(const std::shared_ptr<IStats> &stats_client) {
    int compr_written_blocks, compr_saved_blocks, compr_new_inodes;

    if (kF2fsStatsPath == nullptr) {
        ALOGV("F2fs stats path not specified");
        return;
    }

    std::string userdataBlock = getUserDataBlock();

    std::string path = kF2fsStatsPath + (userdataBlock + "/compr_written_block");
    if (!ReadFileToInt(path, &compr_written_blocks)) {
        ALOGE("Unable to read compression written blocks");
        return;
    }

    path = kF2fsStatsPath + (userdataBlock + "/compr_saved_block");
    if (!ReadFileToInt(path, &compr_saved_blocks)) {
        ALOGE("Unable to read compression saved blocks");
        return;
    } else {
        if (!WriteStringToFile(std::to_string(0), path)) {
            ALOGE("Failed to write to file %s", path.c_str());
            return;
        }
    }

    path = kF2fsStatsPath + (userdataBlock + "/compr_new_inode");
    if (!ReadFileToInt(path, &compr_new_inodes)) {
        ALOGE("Unable to read compression new inodes");
        return;
    } else {
        if (!WriteStringToFile(std::to_string(0), path)) {
            ALOGE("Failed to write to file %s", path.c_str());
            return;
        }
    }

    // Load values array
    std::vector<VendorAtomValue> values(3);
    VendorAtomValue tmp;
    tmp.set<VendorAtomValue::intValue>(compr_written_blocks);
    values[F2fsCompressionInfo::kComprWrittenBlocksFieldNumber - kVendorAtomOffset] = tmp;
    tmp.set<VendorAtomValue::intValue>(compr_saved_blocks);
    values[F2fsCompressionInfo::kComprSavedBlocksFieldNumber - kVendorAtomOffset] = tmp;
    tmp.set<VendorAtomValue::intValue>(compr_new_inodes);
    values[F2fsCompressionInfo::kComprNewInodesFieldNumber - kVendorAtomOffset] = tmp;

    // Send vendor atom to IStats HAL
    VendorAtom event = {.reverseDomainName = "",
                        .atomId = PixelAtoms::Atom::kF2FsCompressionInfo,
                        .values = values};
    const ndk::ScopedAStatus ret = stats_client->reportVendorAtom(event);
    if (!ret.isOk()) {
        ALOGE("Unable to report F2fs compression info to Stats service");
    }
}

int SysfsCollector::getReclaimedSegments(const std::string &mode) {
    std::string userDataStatsPath = kF2fsStatsPath + getUserDataBlock();
    std::string gcSegmentModePath = userDataStatsPath + "/gc_segment_mode";
    std::string gcReclaimedSegmentsPath = userDataStatsPath + "/gc_reclaimed_segments";
    int reclaimed_segments;

    if (!WriteStringToFile(mode, gcSegmentModePath)) {
        ALOGE("Failed to change gc_segment_mode to %s", mode.c_str());
        return -1;
    }

    if (!ReadFileToInt(gcReclaimedSegmentsPath, &reclaimed_segments)) {
        ALOGE("GC mode(%s): Unable to read gc_reclaimed_segments", mode.c_str());
        return -1;
    }

    if (!WriteStringToFile(std::to_string(0), gcReclaimedSegmentsPath)) {
        ALOGE("GC mode(%s): Failed to reset gc_reclaimed_segments", mode.c_str());
        return -1;
    }

    return reclaimed_segments;
}

void SysfsCollector::logF2fsGcSegmentInfo(const std::shared_ptr<IStats> &stats_client) {
    int reclaimed_segments_normal, reclaimed_segments_urgent_high;
    int reclaimed_segments_urgent_mid, reclaimed_segments_urgent_low;
    std::string gc_normal_mode = std::to_string(0);         // GC normal mode
    std::string gc_urgent_high_mode = std::to_string(4);    // GC urgent high mode
    std::string gc_urgent_low_mode = std::to_string(5);     // GC urgent low mode
    std::string gc_urgent_mid_mode = std::to_string(6);     // GC urgent mid mode

    if (kF2fsStatsPath == nullptr) {
        ALOGV("F2fs stats path not specified");
        return;
    }

    reclaimed_segments_normal = getReclaimedSegments(gc_normal_mode);
    if (reclaimed_segments_normal == -1) return;
    reclaimed_segments_urgent_high = getReclaimedSegments(gc_urgent_high_mode);
    if (reclaimed_segments_urgent_high == -1) return;
    reclaimed_segments_urgent_low = getReclaimedSegments(gc_urgent_low_mode);
    if (reclaimed_segments_urgent_low == -1) return;
    reclaimed_segments_urgent_mid = getReclaimedSegments(gc_urgent_mid_mode);
    if (reclaimed_segments_urgent_mid == -1) return;

    // Load values array
    std::vector<VendorAtomValue> values(4);
    VendorAtomValue tmp;
    tmp.set<VendorAtomValue::intValue>(reclaimed_segments_normal);
    values[F2fsGcSegmentInfo::kReclaimedSegmentsNormalFieldNumber - kVendorAtomOffset] = tmp;
    tmp.set<VendorAtomValue::intValue>(reclaimed_segments_urgent_high);
    values[F2fsGcSegmentInfo::kReclaimedSegmentsUrgentHighFieldNumber - kVendorAtomOffset] = tmp;
    tmp.set<VendorAtomValue::intValue>(reclaimed_segments_urgent_low);
    values[F2fsGcSegmentInfo::kReclaimedSegmentsUrgentLowFieldNumber - kVendorAtomOffset] = tmp;
    tmp.set<VendorAtomValue::intValue>(reclaimed_segments_urgent_mid);
    values[F2fsGcSegmentInfo::kReclaimedSegmentsUrgentMidFieldNumber - kVendorAtomOffset] = tmp;

    // Send vendor atom to IStats HAL
    VendorAtom event = {.reverseDomainName = "",
                        .atomId = PixelAtoms::Atom::kF2FsGcSegmentInfo,
                        .values = values};
    const ndk::ScopedAStatus ret = stats_client->reportVendorAtom(event);
    if (!ret.isOk()) {
        ALOGE("Unable to report F2fs GC Segment info to Stats service");
    }
}

void SysfsCollector::logF2fsSmartIdleMaintEnabled(const std::shared_ptr<IStats> &stats_client) {
    bool smart_idle_enabled = android::base::GetBoolProperty(
        "persist.device_config.storage_native_boot.smart_idle_maint_enabled", false);

    // Load values array
    VendorAtomValue tmp;
    std::vector<VendorAtomValue> values(1);
    tmp.set<VendorAtomValue::intValue>(smart_idle_enabled);
    values[F2fsSmartIdleMaintEnabledStateChanged::kEnabledFieldNumber - kVendorAtomOffset] = tmp;

    // Send vendor atom to IStats HAL
    VendorAtom event = {.reverseDomainName = PixelAtoms::ReverseDomainNames().pixel(),
                        .atomId = PixelAtoms::Atom::kF2FsSmartIdleMaintEnabledStateChanged,
                        .values = std::move(values)};
    const ndk::ScopedAStatus ret = stats_client->reportVendorAtom(event);
    if (!ret.isOk()) {
        ALOGE("Unable to report Boot stats to Stats service");
    }
}

void SysfsCollector::logBlockStatsReported(const std::shared_ptr<IStats> &stats_client) {
    std::string sdaPath = "/sys/block/sda/stat";
    std::string file_contents;
    std::string stat;
    std::vector<std::string> stats;
    std::stringstream ss;

    // These index comes from kernel Document
    // Documentation/ABI/stable/sysfs-block
    const int READ_IO_IDX = 0, READ_SEC_IDX = 2, READ_TICK_IDX = 3;
    const int WRITE_IO_IDX = 4, WRITE_SEC_IDX = 6, WRITE_TICK_IDX = 7;
    uint64_t read_io, read_sectors, read_ticks;
    uint64_t write_io, write_sectors, write_ticks;

    if (!ReadFileToString(sdaPath.c_str(), &file_contents)) {
        ALOGE("Failed to read block layer stat %s", sdaPath.c_str());
        return;
    }

    ss.str(file_contents);
    while (ss >> stat) {
        stats.push_back(stat);
    }

    if (stats.size() < kBlockStatsLength) {
        ALOGE("block layer stat format is incorrect %s, length %lu/%d",
            file_contents.c_str(), stats.size(), kBlockStatsLength);
        return;
    }

    read_io = std::stoul(stats[READ_IO_IDX]);
    read_sectors = std::stoul(stats[READ_SEC_IDX]);
    read_ticks = std::stoul(stats[READ_TICK_IDX]);
    write_io = std::stoul(stats[WRITE_IO_IDX]);
    write_sectors = std::stoul(stats[WRITE_SEC_IDX]);
    write_ticks = std::stoul(stats[WRITE_TICK_IDX]);

    // Load values array
    std::vector<VendorAtomValue> values(6);
    values[BlockStatsReported::kReadIoFieldNumber - kVendorAtomOffset] =
                        VendorAtomValue::make<VendorAtomValue::longValue>(read_io);
    values[BlockStatsReported::kReadSectorsFieldNumber - kVendorAtomOffset] =
                        VendorAtomValue::make<VendorAtomValue::longValue>(read_sectors);
    values[BlockStatsReported::kReadTicksFieldNumber - kVendorAtomOffset] =
                        VendorAtomValue::make<VendorAtomValue::longValue>(read_ticks);
    values[BlockStatsReported::kWriteIoFieldNumber - kVendorAtomOffset] =
                        VendorAtomValue::make<VendorAtomValue::longValue>(write_io);
    values[BlockStatsReported::kWriteSectorsFieldNumber - kVendorAtomOffset] =
                        VendorAtomValue::make<VendorAtomValue::longValue>(write_sectors);
    values[BlockStatsReported::kWriteTicksFieldNumber - kVendorAtomOffset] =
                        VendorAtomValue::make<VendorAtomValue::longValue>(write_ticks);

    // Send vendor atom to IStats HAL
    VendorAtom event = {.reverseDomainName = PixelAtoms::ReverseDomainNames().pixel(),
                        .atomId = PixelAtoms::Atom::kBlockStatsReported,
                        .values = std::move(values)};
    const ndk::ScopedAStatus ret = stats_client->reportVendorAtom(event);
    if (!ret.isOk()) {
        ALOGE("Unable to report block layer stats to Stats service");
    }
}

void SysfsCollector::logTempResidencyStats(const std::shared_ptr<IStats> &stats_client) {
    temp_residency_reporter_.logTempResidencyStats(stats_client, kTempResidencyPath);
}

void SysfsCollector::reportZramMmStat(const std::shared_ptr<IStats> &stats_client) {
    std::string file_contents;
    if (!kZramMmStatPath) {
        ALOGV("ZramMmStat path not specified");
        return;
    }

    if (!ReadFileToString(kZramMmStatPath, &file_contents)) {
        ALOGE("Unable to ZramMmStat %s - %s", kZramMmStatPath, strerror(errno));
        return;
    } else {
        int64_t orig_data_size = 0;
        int64_t compr_data_size = 0;
        int64_t mem_used_total = 0;
        int64_t mem_limit = 0;
        int64_t max_used_total = 0;
        int64_t same_pages = 0;
        int64_t pages_compacted = 0;
        int64_t huge_pages = 0;
        int64_t huge_pages_since_boot = 0;

        // huge_pages_since_boot may not exist according to kernel version.
        // only check if the number of collected data is equal or larger then 8
        if (sscanf(file_contents.c_str(),
                   "%" SCNd64 " %" SCNd64 " %" SCNd64 " %" SCNd64 " %" SCNd64 " %" SCNd64
                   " %" SCNd64 " %" SCNd64 " %" SCNd64,
                   &orig_data_size, &compr_data_size, &mem_used_total, &mem_limit, &max_used_total,
                   &same_pages, &pages_compacted, &huge_pages, &huge_pages_since_boot) < 8) {
            ALOGE("Unable to parse ZramMmStat %s from file %s to int.",
                    file_contents.c_str(), kZramMmStatPath);
        }

        // Load values array.
        // The size should be the same as the number of fields in ZramMmStat
        std::vector<VendorAtomValue> values(6);
        VendorAtomValue tmp;
        tmp.set<VendorAtomValue::intValue>(orig_data_size);
        values[ZramMmStat::kOrigDataSizeFieldNumber - kVendorAtomOffset] = tmp;
        tmp.set<VendorAtomValue::intValue>(compr_data_size);
        values[ZramMmStat::kComprDataSizeFieldNumber - kVendorAtomOffset] = tmp;
        tmp.set<VendorAtomValue::intValue>(mem_used_total);
        values[ZramMmStat::kMemUsedTotalFieldNumber - kVendorAtomOffset] = tmp;
        tmp.set<VendorAtomValue::intValue>(same_pages);
        values[ZramMmStat::kSamePagesFieldNumber - kVendorAtomOffset] = tmp;
        tmp.set<VendorAtomValue::intValue>(huge_pages);
        values[ZramMmStat::kHugePagesFieldNumber - kVendorAtomOffset] = tmp;

        // Skip the first data to avoid a big spike in this accumulated value.
        if (prev_huge_pages_since_boot_ == -1)
            tmp.set<VendorAtomValue::intValue>(0);
        else
            tmp.set<VendorAtomValue::intValue>(huge_pages_since_boot - prev_huge_pages_since_boot_);

        values[ZramMmStat::kHugePagesSinceBootFieldNumber - kVendorAtomOffset] = tmp;
        prev_huge_pages_since_boot_ = huge_pages_since_boot;

        // Send vendor atom to IStats HAL
        VendorAtom event = {.reverseDomainName = "",
                            .atomId = PixelAtoms::Atom::kZramMmStat,
                            .values = std::move(values)};
        const ndk::ScopedAStatus ret = stats_client->reportVendorAtom(event);
        if (!ret.isOk())
            ALOGE("Zram Unable to report ZramMmStat to Stats service");
    }
}

void SysfsCollector::reportZramBdStat(const std::shared_ptr<IStats> &stats_client) {
    std::string file_contents;
    if (!kZramBdStatPath) {
        ALOGV("ZramBdStat path not specified");
        return;
    }

    if (!ReadFileToString(kZramBdStatPath, &file_contents)) {
        ALOGE("Unable to ZramBdStat %s - %s", kZramBdStatPath, strerror(errno));
        return;
    } else {
        int64_t bd_count = 0;
        int64_t bd_reads = 0;
        int64_t bd_writes = 0;

        if (sscanf(file_contents.c_str(), "%" SCNd64 " %" SCNd64 " %" SCNd64,
                                &bd_count, &bd_reads, &bd_writes) != 3) {
            ALOGE("Unable to parse ZramBdStat %s from file %s to int.",
                    file_contents.c_str(), kZramBdStatPath);
        }

        // Load values array
        std::vector<VendorAtomValue> values(3);
        VendorAtomValue tmp;
        tmp.set<VendorAtomValue::intValue>(bd_count);
        values[ZramBdStat::kBdCountFieldNumber - kVendorAtomOffset] = tmp;
        tmp.set<VendorAtomValue::intValue>(bd_reads);
        values[ZramBdStat::kBdReadsFieldNumber - kVendorAtomOffset] = tmp;
        tmp.set<VendorAtomValue::intValue>(bd_writes);
        values[ZramBdStat::kBdWritesFieldNumber - kVendorAtomOffset] = tmp;

        // Send vendor atom to IStats HAL
        VendorAtom event = {.reverseDomainName = "",
                            .atomId = PixelAtoms::Atom::kZramBdStat,
                            .values = std::move(values)};
        const ndk::ScopedAStatus ret = stats_client->reportVendorAtom(event);
        if (!ret.isOk())
            ALOGE("Zram Unable to report ZramBdStat to Stats service");
    }
}

void SysfsCollector::logZramStats(const std::shared_ptr<IStats> &stats_client) {
    reportZramMmStat(stats_client);
    reportZramBdStat(stats_client);
}

void SysfsCollector::logBootStats(const std::shared_ptr<IStats> &stats_client) {
    int mounted_time_sec = 0;

    if (kF2fsStatsPath == nullptr) {
        ALOGE("F2fs stats path not specified");
        return;
    }

    std::string userdataBlock = getUserDataBlock();

    if (!ReadFileToInt(kF2fsStatsPath + (userdataBlock + "/mounted_time_sec"), &mounted_time_sec)) {
        ALOGV("Unable to read mounted_time_sec");
        return;
    }

    int fsck_time_ms = android::base::GetIntProperty("ro.boottime.init.fsck.data", 0);
    int checkpoint_time_ms = android::base::GetIntProperty("ro.boottime.init.mount.data", 0);

    if (fsck_time_ms == 0 && checkpoint_time_ms == 0) {
        ALOGV("Not yet initialized");
        return;
    }

    // Load values array
    std::vector<VendorAtomValue> values(3);
    VendorAtomValue tmp;
    tmp.set<VendorAtomValue::intValue>(mounted_time_sec);
    values[BootStatsInfo::kMountedTimeSecFieldNumber - kVendorAtomOffset] = tmp;
    tmp.set<VendorAtomValue::intValue>(fsck_time_ms / 1000);
    values[BootStatsInfo::kFsckTimeSecFieldNumber - kVendorAtomOffset] = tmp;
    tmp.set<VendorAtomValue::intValue>(checkpoint_time_ms / 1000);
    values[BootStatsInfo::kCheckpointTimeSecFieldNumber - kVendorAtomOffset] = tmp;

    // Send vendor atom to IStats HAL
    VendorAtom event = {.reverseDomainName = "",
                        .atomId = PixelAtoms::Atom::kBootStats,
                        .values = std::move(values)};
    const ndk::ScopedAStatus ret = stats_client->reportVendorAtom(event);
    if (!ret.isOk()) {
        ALOGE("Unable to report Boot stats to Stats service");
    } else {
        log_once_reported = true;
    }
}

/**
 * Report the AMS & CCA rate.
 */
void SysfsCollector::logVendorAudioHardwareStats(const std::shared_ptr<IStats> &stats_client) {
    std::string file_contents;
    uint32_t milli_ams_rate, cca_active_rate, cca_enable_rate;
    bool isAmsReady = false, isCCAReady = false;

    if (kAmsRatePath == nullptr) {
        ALOGD("Audio AMS Rate path not specified");
    } else {
        if (!ReadFileToString(kAmsRatePath, &file_contents)) {
            ALOGD("Unable to read ams_rate path %s", kAmsRatePath);
        } else {
            if (sscanf(file_contents.c_str(), "%u", &milli_ams_rate) != 1) {
                ALOGD("Unable to parse ams_rate %s", file_contents.c_str());
            } else {
                isAmsReady = true;
                ALOGD("milli_ams_rate = %u", milli_ams_rate);
            }
        }
    }

    if (kCCARatePath == nullptr) {
        ALOGD("Audio CCA Rate path not specified");
    } else {
        if (!ReadFileToString(kCCARatePath, &file_contents)) {
            ALOGD("Unable to read cca_rate path %s", kCCARatePath);
        } else {
            if (sscanf(file_contents.c_str(), "%u,%u", &cca_active_rate, &cca_enable_rate) != 2) {
                ALOGD("Unable to parse cca rates %s", file_contents.c_str());
            } else {
                isCCAReady = true;
                ALOGD("cca_active_rate = %u, cca_enable_rate = %u", cca_active_rate,
                      cca_enable_rate);
            }
        }
    }

    if (!(isAmsReady || isCCAReady)) {
        ALOGD("no ams or cca data to report");
        return;
    }

    std::vector<VendorAtomValue> values(3);
    VendorAtomValue tmp;

    if (isAmsReady) {
        tmp.set<VendorAtomValue::intValue>(milli_ams_rate);
        values[VendorAudioHardwareStatsReported::kMilliRateOfAmsPerDayFieldNumber -
               kVendorAtomOffset] = tmp;
    }

    if (isCCAReady) {
        tmp.set<VendorAtomValue::intValue>(cca_active_rate);
        values[VendorAudioHardwareStatsReported::kRateOfCcaActivePerDayFieldNumber -
               kVendorAtomOffset] = tmp;

        tmp.set<VendorAtomValue::intValue>(cca_enable_rate);
        values[VendorAudioHardwareStatsReported::kRateOfCcaEnablePerDayFieldNumber -
               kVendorAtomOffset] = tmp;
    }

    // Send vendor atom to IStats HAL
    VendorAtom event = {.reverseDomainName = "",
                        .atomId = PixelAtoms::Atom::kVendorAudioHardwareStatsReported,
                        .values = std::move(values)};

    const ndk::ScopedAStatus ret = stats_client->reportVendorAtom(event);
    if (!ret.isOk())
        ALOGE("Unable to report VendorAudioHardwareStatsReported to Stats service");
}

/**
 * Logs the Resume Latency stats.
 */
void SysfsCollector::logVendorResumeLatencyStats(const std::shared_ptr<IStats> &stats_client) {
    std::string uart_enabled = android::base::GetProperty("init.svc.console", "");
    if (uart_enabled == "running") {
        return;
    }
    std::string file_contents;
    if (!kResumeLatencyMetricsPath) {
        ALOGE("ResumeLatencyMetrics path not specified");
        return;
    }
    if (!ReadFileToString(kResumeLatencyMetricsPath, &file_contents)) {
        ALOGE("Unable to ResumeLatencyMetric %s - %s", kResumeLatencyMetricsPath, strerror(errno));
        return;
    }

    int offset = 0;
    int bytes_read;
    const char *data = file_contents.c_str();
    int data_len = file_contents.length();

    int curr_bucket_cnt;
    if (!sscanf(data + offset, "Resume Latency Bucket Count: %d\n%n", &curr_bucket_cnt,
                &bytes_read))
        return;
    offset += bytes_read;
    if (offset >= data_len)
        return;

    int64_t max_latency;
    if (!sscanf(data + offset, "Max Resume Latency: %ld\n%n", &max_latency, &bytes_read))
        return;
    offset += bytes_read;
    if (offset >= data_len)
        return;

    uint64_t sum_latency;
    if (!sscanf(data + offset, "Sum Resume Latency: %lu\n%n", &sum_latency, &bytes_read))
        return;
    offset += bytes_read;
    if (offset >= data_len)
        return;

    if (curr_bucket_cnt > kMaxResumeLatencyBuckets)
        return;
    if (curr_bucket_cnt != prev_data.bucket_cnt) {
        prev_data.resume_latency_buckets.clear();
    }

    int64_t total_latency_cnt = 0;
    int64_t count;
    int index = 2;
    std::vector<VendorAtomValue> values(curr_bucket_cnt + 2);
    VendorAtomValue tmp;
    // Iterate over resume latency buckets to get latency count within some latency thresholds
    while (sscanf(data + offset, "%*ld - %*ldms ====> %ld\n%n", &count, &bytes_read) == 1 ||
           sscanf(data + offset, "%*ld - infms ====> %ld\n%n", &count, &bytes_read) == 1) {
        offset += bytes_read;
        if (offset >= data_len && (index + 1 < curr_bucket_cnt + 2))
            return;
        if (curr_bucket_cnt == prev_data.bucket_cnt) {
            tmp.set<VendorAtomValue::longValue>(count -
                                                prev_data.resume_latency_buckets[index - 2]);
            prev_data.resume_latency_buckets[index - 2] = count;
        } else {
            tmp.set<VendorAtomValue::longValue>(count);
            prev_data.resume_latency_buckets.push_back(count);
        }
        if (index >= curr_bucket_cnt + 2)
            return;
        values[index] = tmp;
        index += 1;
        total_latency_cnt += count;
    }
    tmp.set<VendorAtomValue::longValue>(max_latency);
    values[0] = tmp;
    if ((sum_latency - prev_data.resume_latency_sum_ms < 0) ||
        (total_latency_cnt - prev_data.resume_count <= 0)) {
        tmp.set<VendorAtomValue::longValue>(-1);
        ALOGI("average resume latency get overflow");
    } else {
        tmp.set<VendorAtomValue::longValue>(
                (int64_t)(sum_latency - prev_data.resume_latency_sum_ms) /
                (total_latency_cnt - prev_data.resume_count));
    }
    values[1] = tmp;

    prev_data.resume_latency_sum_ms = sum_latency;
    prev_data.resume_count = total_latency_cnt;
    prev_data.bucket_cnt = curr_bucket_cnt;
    // Send vendor atom to IStats HAL
    VendorAtom event = {.reverseDomainName = "",
                        .atomId = PixelAtoms::Atom::kVendorResumeLatencyStats,
                        .values = std::move(values)};
    const ndk::ScopedAStatus ret = stats_client->reportVendorAtom(event);
    if (!ret.isOk())
        ALOGE("Unable to report VendorResumeLatencyStats to Stats service");
}

bool cmp(const std::pair<int, int64_t> &a, const std::pair<int, int64_t> &b) {
    return a.second > b.second;
}

/**
 * Sort irq stats by irq latency, and load top 5 irq stats.
 */
void process_irqatom_values(std::vector<std::pair<int, int64_t>> sorted_pair,
                            std::vector<VendorAtomValue> *values) {
    VendorAtomValue tmp;
    sort(sorted_pair.begin(), sorted_pair.end(), cmp);
    int irq_stats_size = sorted_pair.size();
    for (int i = 0; i < 5; i++) {
        if (irq_stats_size < 5 && i >= irq_stats_size) {
            tmp.set<VendorAtomValue::longValue>(-1);
            values->push_back(tmp);
            tmp.set<VendorAtomValue::longValue>(0);
            values->push_back(tmp);
        } else {
            tmp.set<VendorAtomValue::longValue>(sorted_pair[i].first);
            values->push_back(tmp);
            tmp.set<VendorAtomValue::longValue>(sorted_pair[i].second);
            values->push_back(tmp);
        }
    }
}

/**
 * Logs the Long irq stats.
 */
void SysfsCollector::logVendorLongIRQStatsReported(const std::shared_ptr<IStats> &stats_client) {
    std::string uart_enabled = android::base::GetProperty("init.svc.console", "");
    if (uart_enabled == "running") {
        return;
    }
    std::string file_contents;
    if (!kLongIRQMetricsPath) {
        ALOGV("LongIRQ path not specified");
        return;
    }
    if (!ReadFileToString(kLongIRQMetricsPath, &file_contents)) {
        ALOGE("Unable to LongIRQ %s - %s", kLongIRQMetricsPath, strerror(errno));
        return;
    }
    int offset = 0;
    int bytes_read;
    const char *data = file_contents.c_str();
    int data_len = file_contents.length();
    //  Get, process, store softirq stats
    std::vector<std::pair<int, int64_t>> sorted_softirq_pair;
    int64_t softirq_count;
    if (sscanf(data + offset, "long SOFTIRQ count: %ld\n%n", &softirq_count, &bytes_read) != 1)
        return;
    offset += bytes_read;
    if (offset >= data_len)
        return;
    std::vector<VendorAtomValue> values;
    VendorAtomValue tmp;
    if (softirq_count - prev_data.softirq_count < 0) {
        tmp.set<VendorAtomValue::intValue>(-1);
        ALOGI("long softirq count get overflow");
    } else {
        tmp.set<VendorAtomValue::longValue>(softirq_count - prev_data.softirq_count);
    }
    values.push_back(tmp);

    if (sscanf(data + offset, "long SOFTIRQ detail (num, latency):\n%n", &bytes_read) != 0)
        return;
    offset += bytes_read;
    if (offset >= data_len)
        return;

    //  Iterate over softirq stats and record top 5 long softirq
    int64_t softirq_latency;
    int softirq_num;
    while (sscanf(data + offset, "%d %ld\n%n", &softirq_num, &softirq_latency, &bytes_read) == 2) {
        sorted_softirq_pair.push_back(std::make_pair(softirq_num, softirq_latency));
        offset += bytes_read;
        if (offset >= data_len)
            return;
    }
    process_irqatom_values(sorted_softirq_pair, &values);

    //  Get, process, store irq stats
    std::vector<std::pair<int, int64_t>> sorted_irq_pair;
    int64_t irq_count;
    if (sscanf(data + offset, "long IRQ count: %ld\n%n", &irq_count, &bytes_read) != 1)
        return;
    offset += bytes_read;
    if (offset >= data_len)
        return;
    if (irq_count - prev_data.irq_count < 0) {
        tmp.set<VendorAtomValue::intValue>(-1);
        ALOGI("long irq count get overflow");
    } else {
        tmp.set<VendorAtomValue::longValue>(irq_count - prev_data.irq_count);
    }
    values.push_back(tmp);

    if (sscanf(data + offset, "long IRQ detail (num, latency):\n%n", &bytes_read) != 0)
        return;
    offset += bytes_read;
    if (offset >= data_len)
        return;

    int64_t irq_latency;
    int irq_num;
    int index = 0;
    //  Iterate over softirq stats and record top 5 long irq
    while (sscanf(data + offset, "%d %ld\n%n", &irq_num, &irq_latency, &bytes_read) == 2) {
        sorted_irq_pair.push_back(std::make_pair(irq_num, irq_latency));
        offset += bytes_read;
        if (offset >= data_len && index < 5)
            return;
        index += 1;
    }
    process_irqatom_values(sorted_irq_pair, &values);

    prev_data.softirq_count = softirq_count;
    prev_data.irq_count = irq_count;
    // Send vendor atom to IStats HAL
    VendorAtom event = {.reverseDomainName = "",
                        .atomId = PixelAtoms::Atom::kVendorLongIrqStatsReported,
                        .values = std::move(values)};
    const ndk::ScopedAStatus ret = stats_client->reportVendorAtom(event);
    if (!ret.isOk())
        ALOGE("Unable to report kVendorLongIRQStatsReported to Stats service");
}

void SysfsCollector::logPcieLinkStats(const std::shared_ptr<IStats> &stats_client) {
    struct sysfs_map {
        const char *sysfs_path;
        bool is_counter;
        int modem_val;
        int wifi_val;
        int modem_msg_field_number;
        int wifi_msg_field_number;
    };

    int i;
    bool reportPcieLinkStats = false;

    /* Map sysfs data to PcieLinkStatsReported message elements */
    struct sysfs_map datamap[] = {
        {"link_down_irqs", true, 0, 0,
         PcieLinkStatsReported::kModemPcieLinkdownsFieldNumber,
         PcieLinkStatsReported::kWifiPcieLinkdownsFieldNumber},

        {"complete_timeout_irqs", true, 0, 0,
         PcieLinkStatsReported::kModemPcieCompletionTimeoutsFieldNumber,
         PcieLinkStatsReported::kWifiPcieCompletionTimeoutsFieldNumber},

        {"link_up_failures", true, 0, 0,
         PcieLinkStatsReported::kModemPcieLinkupFailuresFieldNumber,
         PcieLinkStatsReported::kWifiPcieLinkupFailuresFieldNumber},

        {"pll_lock_average", false, 0, 0,
         PcieLinkStatsReported::kModemPciePllLockAvgFieldNumber,
         PcieLinkStatsReported::kWifiPciePllLockAvgFieldNumber},

        {"link_up_average", false, 0, 0,
         PcieLinkStatsReported::kWifiPcieLinkUpAvgFieldNumber,
         PcieLinkStatsReported::kWifiPcieLinkUpAvgFieldNumber },
    };


    if (kModemPcieLinkStatsPath == nullptr) {
        ALOGD("Modem PCIe stats path not specified");
    } else {
        for (i=0; i < ARRAY_SIZE(datamap); i++) {
            std::string modempath = std::string (kModemPcieLinkStatsPath) + \
                                    "/" + datamap[i].sysfs_path;

            if (ReadFileToInt(modempath, &(datamap[i].modem_val))) {
                reportPcieLinkStats = true;
                ALOGD("Modem %s = %d", datamap[i].sysfs_path,
                      datamap[i].modem_val);
                if (datamap[i].is_counter) {
                    std::string value = std::to_string(datamap[i].modem_val);
                    /* Writing the value back clears the counter */
                    if (!WriteStringToFile(value, modempath)) {
                        ALOGE("Unable to clear modem PCIe statistics file: %s - %s",
                              modempath.c_str(), strerror(errno));
                    }
                }
            }
        }
    }

    if (kWifiPcieLinkStatsPath == nullptr) {
        ALOGD("Wifi PCIe stats path not specified");
    } else {
        for (i=0; i < ARRAY_SIZE(datamap); i++) {
            std::string wifipath = std::string (kWifiPcieLinkStatsPath) + \
                                   "/" + datamap[i].sysfs_path;

            if (ReadFileToInt(wifipath, &(datamap[i].wifi_val))) {
                reportPcieLinkStats = true;
                ALOGD("Wifi %s = %d", datamap[i].sysfs_path,
                      datamap[i].wifi_val);
                if (datamap[i].is_counter) {
                    std::string value = std::to_string(datamap[i].wifi_val);
                    /* Writing the value back clears the counter */
                    if (!WriteStringToFile(value, wifipath)) {
                        ALOGE("Unable to clear wifi PCIe statistics file: %s - %s",
                              wifipath.c_str(), strerror(errno));
                    }
                }
            }
        }
    }

    if (!reportPcieLinkStats) {
        ALOGD("No PCIe link stats to report");
        return;
    }

    // Load values array
    std::vector<VendorAtomValue> values(2 * ARRAY_SIZE(datamap));
    VendorAtomValue tmp;
    for (i=0; i < ARRAY_SIZE(datamap); i++) {
        if (datamap[i].modem_val > 0) {
            tmp.set<VendorAtomValue::intValue>(datamap[i].modem_val);
            values[datamap[i].modem_msg_field_number - kVendorAtomOffset] = tmp;
        }
        if (datamap[i].wifi_val > 0) {
            tmp.set<VendorAtomValue::intValue>(datamap[i].wifi_val);
            values[datamap[i].wifi_msg_field_number - kVendorAtomOffset] = tmp;
        }
    }

    // Send vendor atom to IStats HAL
    VendorAtom event = {.reverseDomainName = "",
                        .atomId = PixelAtoms::Atom::kPcieLinkStats,
                        .values = std::move(values)};

    const ndk::ScopedAStatus ret = stats_client->reportVendorAtom(event);
    if (!ret.isOk()) {
        ALOGE("Unable to report PCIe link statistics to stats service");
    }
}

void SysfsCollector::logPerDay() {
    const std::shared_ptr<IStats> stats_client = getStatsService();
    if (!stats_client) {
        ALOGE("Unable to get AIDL Stats service");
        return;
    }
    // Collect once per service init; can be multiple due to service reinit
    if (!log_once_reported) {
        logBootStats(stats_client);
    }
    logBatteryCapacity(stats_client);
    logBatteryChargeCycles(stats_client);
    logBatteryEEPROM(stats_client);
    logBatteryHealth(stats_client);
    logBlockStatsReported(stats_client);
    logCodec1Failed(stats_client);
    logCodecFailed(stats_client);
    logF2fsStats(stats_client);
    logF2fsCompressionInfo(stats_client);
    logF2fsGcSegmentInfo(stats_client);
    logF2fsSmartIdleMaintEnabled(stats_client);
    logSlowIO(stats_client);
    logSpeakerImpedance(stats_client);
    logSpeechDspStat(stats_client);
    logUFSLifetime(stats_client);
    logUFSErrorStats(stats_client);
    logSpeakerHealthStats(stats_client);
    mm_metrics_reporter_.logCmaStatus(stats_client);
    mm_metrics_reporter_.logPixelMmMetricsPerDay(stats_client);
    logVendorAudioHardwareStats(stats_client);
    logThermalStats(stats_client);
    logTempResidencyStats(stats_client);
    logVendorLongIRQStatsReported(stats_client);
    logVendorResumeLatencyStats(stats_client);
    logPcieLinkStats(stats_client);
}

void SysfsCollector::aggregatePer5Min() {
    mm_metrics_reporter_.aggregatePixelMmMetricsPer5Min();
}

void SysfsCollector::logPerHour() {
    const std::shared_ptr<IStats> stats_client = getStatsService();
    if (!stats_client) {
        ALOGE("Unable to get AIDL Stats service");
        return;
    }
    mm_metrics_reporter_.logPixelMmMetricsPerHour(stats_client);
    logZramStats(stats_client);
    if (kPowerMitigationStatsPath != nullptr && strlen(kPowerMitigationStatsPath) > 0)
        mitigation_stats_reporter_.logMitigationStatsPerHour(stats_client,
                                                             kPowerMitigationStatsPath);
}

/**
 * Loop forever collecting stats from sysfs nodes and reporting them via
 * IStats.
 */
void SysfsCollector::collect(void) {
    int timerfd = timerfd_create(CLOCK_BOOTTIME, 0);
    if (timerfd < 0) {
        ALOGE("Unable to create timerfd - %s", strerror(errno));
        return;
    }

    // Sleep for 30 seconds on launch to allow codec driver to load.
    sleep(30);

    // sample & aggregate for the first time.
    aggregatePer5Min();

    // Collect first set of stats on boot.
    logPerHour();
    logPerDay();

    struct itimerspec period;

    // gcd (greatest common divisor) of all the following timings
    constexpr int kSecondsPerWake = 5 * 60;

    constexpr int kWakesPer5Min = 5 * 60 / kSecondsPerWake;
    constexpr int kWakesPerHour = 60 * 60 / kSecondsPerWake;
    constexpr int kWakesPerDay = 24 * 60 * 60 / kSecondsPerWake;

    int wake_5min = 0;
    int wake_hours = 0;
    int wake_days = 0;

    period.it_interval.tv_sec = kSecondsPerWake;
    period.it_interval.tv_nsec = 0;
    period.it_value.tv_sec = kSecondsPerWake;
    period.it_value.tv_nsec = 0;

    if (timerfd_settime(timerfd, 0, &period, NULL)) {
        ALOGE("Unable to set one hour timer - %s", strerror(errno));
        return;
    }

    while (1) {
        int readval;
        union {
            char buf[8];
            uint64_t count;
        } expire;

        do {
            errno = 0;
            readval = read(timerfd, expire.buf, sizeof(expire.buf));
        } while (readval < 0 && errno == EINTR);
        if (readval < 0) {
            ALOGE("Timerfd error - %s\n", strerror(errno));
            return;
        }

        wake_5min += expire.count;
        wake_hours += expire.count;
        wake_days += expire.count;

        if (wake_5min >= kWakesPer5Min) {
            wake_5min %= kWakesPer5Min;
            aggregatePer5Min();
        }

        if (wake_hours >= kWakesPerHour) {
            if (wake_hours >= 2 * kWakesPerHour)
                ALOGW("Hourly wake: sleep too much: expire.count=%" PRId64, expire.count);
            wake_hours %= kWakesPerHour;
            logPerHour();
        }

        if (wake_days >= kWakesPerDay) {
            if (wake_hours >= 2 * kWakesPerDay)
                ALOGW("Daily wake: sleep too much: expire.count=%" PRId64, expire.count);
            wake_days %= kWakesPerDay;
            logPerDay();
        }
    }
}

}  // namespace pixel
}  // namespace google
}  // namespace hardware
}  // namespace android