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// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/sync_file_system/task_logger.h"
#include <stddef.h>
#include "base/lazy_instance.h"
#include "base/observer_list.h"
#include "base/synchronization/lock.h"
namespace sync_file_system {
namespace {
const size_t kMaxLogSize = 500;
int g_next_log_id = 1;
base::LazyInstance<base::Lock>::Leaky g_log_id_lock = LAZY_INSTANCE_INITIALIZER;
int GenerateLogID() {
base::AutoLock lock(g_log_id_lock.Get());
return g_next_log_id++;
}
} // namespace
typedef TaskLogger::TaskLog TaskLog;
TaskLogger::TaskLog::TaskLog() : log_id(GenerateLogID()) {}
TaskLogger::TaskLog::~TaskLog() = default;
TaskLogger::TaskLogger() = default;
TaskLogger::~TaskLogger() {
ClearLog();
}
void TaskLogger::RecordLog(std::unique_ptr<TaskLog> log) {
if (!log)
return;
if (log_history_.size() >= kMaxLogSize) {
log_history_.pop_front();
}
log_history_.push_back(std::move(log));
for (auto& observer : observers_)
observer.OnLogRecorded(*log_history_.back());
}
void TaskLogger::ClearLog() {
log_history_.clear();
}
void TaskLogger::AddObserver(Observer* observer) {
observers_.AddObserver(observer);
}
void TaskLogger::RemoveObserver(Observer* observer) {
observers_.RemoveObserver(observer);
}
const TaskLogger::LogList& TaskLogger::GetLog() const {
return log_history_;
}
} // namespace sync_file_system
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