log_buffer.cc 1.6 KB

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  1. // Copyright 2021 The Chromium Authors. All rights reserved.
  2. // Use of this source code is governed by a BSD-style license that can be
  3. // found in the LICENSE file.
  4. #include "ash/quick_pair/common/log_buffer.h"
  5. #include "base/no_destructor.h"
  6. namespace ash {
  7. namespace quick_pair {
  8. namespace {
  9. // The maximum number of logs that can be stored in the buffer.
  10. const size_t kMaxBufferSize = 1000;
  11. } // namespace
  12. LogBuffer::LogMessage::LogMessage(const std::string& text,
  13. const base::Time& time,
  14. const std::string& file,
  15. const int line,
  16. logging::LogSeverity severity)
  17. : text(text), time(time), file(file), line(line), severity(severity) {}
  18. // static
  19. LogBuffer* LogBuffer::GetInstance() {
  20. static base::NoDestructor<LogBuffer> log_buffer;
  21. return log_buffer.get();
  22. }
  23. LogBuffer::LogBuffer() {}
  24. LogBuffer::~LogBuffer() {}
  25. void LogBuffer::AddObserver(Observer* observer) {
  26. observers_.AddObserver(observer);
  27. }
  28. void LogBuffer::RemoveObserver(Observer* observer) {
  29. observers_.RemoveObserver(observer);
  30. }
  31. void LogBuffer::AddLogMessage(const LogMessage& log_message) {
  32. log_messages_.push_back(log_message);
  33. if (log_messages_.size() > MaxBufferSize())
  34. log_messages_.pop_front();
  35. for (auto& observer : observers_)
  36. observer.OnLogMessageAdded(log_message);
  37. }
  38. void LogBuffer::Clear() {
  39. log_messages_.clear();
  40. for (auto& observer : observers_)
  41. observer.OnLogBufferCleared();
  42. }
  43. size_t LogBuffer::MaxBufferSize() const {
  44. return kMaxBufferSize;
  45. }
  46. } // namespace quick_pair
  47. } // namespace ash