1 // Copyright 2014 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 5 #include "chrome/browser/sync_file_system/task_logger.h" 6 7 #include "base/lazy_instance.h" 8 #include "base/stl_util.h" 9 #include "base/synchronization/lock.h" 10 11 namespace sync_file_system { 12 13 namespace { 14 15 const size_t kMaxLogSize = 500; 16 17 int g_next_log_id = 1; 18 base::LazyInstance<base::Lock>::Leaky g_log_id_lock = LAZY_INSTANCE_INITIALIZER; 19 20 int GenerateLogID() { 21 base::AutoLock lock(g_log_id_lock.Get()); 22 return g_next_log_id++; 23 } 24 25 } // namespace 26 27 typedef TaskLogger::TaskLog TaskLog; 28 29 TaskLogger::TaskLog::TaskLog() : log_id(GenerateLogID()) {} 30 TaskLogger::TaskLog::~TaskLog() {} 31 32 TaskLogger::TaskLogger() {} 33 34 TaskLogger::~TaskLogger() { 35 ClearLog(); 36 } 37 38 void TaskLogger::RecordLog(scoped_ptr<TaskLog> log) { 39 if (!log) 40 return; 41 42 if (log_history_.size() >= kMaxLogSize) { 43 delete log_history_.front(); 44 log_history_.pop_front(); 45 } 46 47 log_history_.push_back(log.release()); 48 49 FOR_EACH_OBSERVER(Observer, observers_, 50 OnLogRecorded(*log_history_.back())); 51 } 52 53 void TaskLogger::ClearLog() { 54 STLDeleteContainerPointers(log_history_.begin(), log_history_.end()); 55 log_history_.clear(); 56 } 57 58 void TaskLogger::AddObserver(Observer* observer) { 59 observers_.AddObserver(observer); 60 } 61 62 void TaskLogger::RemoveObserver(Observer* observer) { 63 observers_.RemoveObserver(observer); 64 } 65 66 const TaskLogger::LogList& TaskLogger::GetLog() const { 67 return log_history_; 68 } 69 70 } // namespace sync_file_system 71
