106 lines
3.7 KiB
C++
106 lines
3.7 KiB
C++
/*
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* Copyright 2020 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#define LOG_TAG "BtStopWatchLegacy"
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#include "common/stop_watch_legacy.h"
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#include <iomanip>
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#include <mutex>
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#include <sstream>
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#include <utility>
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#include <base/logging.h>
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#include "osi/include/log.h"
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namespace bluetooth {
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namespace common {
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static const int LOG_BUFFER_LENGTH = 10;
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static std::array<StopWatchLog, LOG_BUFFER_LENGTH> stopwatch_logs;
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static int current_buffer_index;
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static std::recursive_mutex stopwatch_log_mutex;
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void StopWatchLegacy::RecordLog(StopWatchLog log) {
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std::unique_lock<std::recursive_mutex> lock(stopwatch_log_mutex, std::defer_lock);
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if (!lock.try_lock()) {
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LOG_INFO("try_lock fail. log content: %s, took %zu us", log.message.c_str(),
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static_cast<size_t>(
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std::chrono::duration_cast<std::chrono::microseconds>(
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stopwatch_logs[current_buffer_index].end_timestamp -
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stopwatch_logs[current_buffer_index].start_timestamp)
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.count()));
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return;
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}
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if (current_buffer_index >= LOG_BUFFER_LENGTH) {
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current_buffer_index = 0;
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}
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stopwatch_logs[current_buffer_index] = std::move(log);
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current_buffer_index++;
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lock.unlock();
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}
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void StopWatchLegacy::DumpStopWatchLog() {
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std::lock_guard<std::recursive_mutex> lock(stopwatch_log_mutex);
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LOG_INFO("=====================================");
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LOG_INFO("bluetooth stopwatch log history:");
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for (int i = 0; i < LOG_BUFFER_LENGTH; i++) {
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if (current_buffer_index >= LOG_BUFFER_LENGTH) {
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current_buffer_index = 0;
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}
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if (stopwatch_logs[current_buffer_index].message.empty()) {
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current_buffer_index++;
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continue;
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}
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std::stringstream ss;
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auto now = stopwatch_logs[current_buffer_index].timestamp;
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auto millis = std::chrono::duration_cast<std::chrono::milliseconds>(
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now.time_since_epoch()) %
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1000;
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auto now_time_t = std::chrono::system_clock::to_time_t(now);
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ss << std::put_time(std::localtime(&now_time_t), "%Y-%m-%d %H:%M:%S");
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ss << '.' << std::setfill('0') << std::setw(3) << millis.count();
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std::string start_timestamp = ss.str();
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LOG_INFO("%s: %s: took %zu us", start_timestamp.c_str(),
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stopwatch_logs[current_buffer_index].message.c_str(),
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static_cast<size_t>(
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std::chrono::duration_cast<std::chrono::microseconds>(
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stopwatch_logs[current_buffer_index].end_timestamp -
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stopwatch_logs[current_buffer_index].start_timestamp)
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.count()));
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current_buffer_index++;
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}
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LOG_INFO("=====================================");
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}
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StopWatchLegacy::StopWatchLegacy(std::string text)
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: text_(std::move(text)),
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timestamp_(std::chrono::system_clock::now()),
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start_timestamp_(std::chrono::high_resolution_clock::now()) {}
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StopWatchLegacy::~StopWatchLegacy() {
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StopWatchLog sw_log;
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sw_log.timestamp = timestamp_;
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sw_log.start_timestamp = start_timestamp_;
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sw_log.end_timestamp = std::chrono::high_resolution_clock::now();
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sw_log.message = std::move(text_);
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RecordLog(std::move(sw_log));
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}
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} // namespace common
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} // namespace bluetooth
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