Replace RingBuffer by std::deque in RtcEventLog.

webrtc/logging/rtc_event_log/rtc_event_log_helper_thread.cc

 /*
  *  Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 20 matching lines @@
          event_type == rtclog::Event::AUDIO_SENDER_CONFIG_EVENT;
 }
 }  // namespace
 
 // RtcEventLogImpl member functions.
 RtcEventLogHelperThread::RtcEventLogHelperThread(
     SwapQueue<ControlMessage>* message_queue,
     SwapQueue<std::unique_ptr<rtclog::Event>>* event_queue)
     : message_queue_(message_queue),
       event_queue_(event_queue),
-      history_(kEventsInHistory),
-      config_history_(),
       file_(FileWrapper::Create()),
       thread_(&ThreadOutputFunction, this, "RtcEventLog thread"),
       max_size_bytes_(std::numeric_limits<int64_t>::max()),
       written_bytes_(0),
       start_time_(0),
       stop_time_(std::numeric_limits<int64_t>::max()),
       has_recent_event_(false),
-      most_recent_event_(),
-      output_string_(),
       wake_periodically_(false, false),
       wake_from_hibernation_(false, false),
       file_finished_(false, false) {
   RTC_DCHECK(message_queue_);
   RTC_DCHECK(event_queue_);
   thread_.Start();
 }
 
 RtcEventLogHelperThread::~RtcEventLogHelperThread() {
   ControlMessage message;
@@ skipping 51 matching lines @@
   int64_t current_time = rtc::TimeMicros();
   if (!has_recent_event_) {
     has_recent_event_ = event_queue_->Remove(&most_recent_event_);
   }
   while (has_recent_event_ &&
          most_recent_event_->timestamp_us() <= current_time) {
     if (IsConfigEvent(*most_recent_event_)) {
       config_history_.push_back(std::move(most_recent_event_));
     } else {
       history_.push_back(std::move(most_recent_event_));
+      if (history_.size() > kEventsInHistory)
+        history_.pop_front();
     }
     has_recent_event_ = event_queue_->Remove(&most_recent_event_);
     message_received = true;
   }
   return message_received;
 }
 
 void RtcEventLogHelperThread::StartLogFile() {
   RTC_DCHECK(file_->is_open());
   bool stop = false;
@@ skipping 175 matching lines @@
 }
 
 void RtcEventLogHelperThread::ThreadOutputFunction(void* obj) {
   RtcEventLogHelperThread* helper = static_cast<RtcEventLogHelperThread*>(obj);
   helper->ProcessEvents();
 }
 
 }  // namespace webrtc
 
 #endif  // ENABLE_RTC_EVENT_LOG