You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
80 lines
2.9 KiB
80 lines
2.9 KiB
4 months ago
|
/*
|
||
|
|
* Copyright (C) 2020 The Android Open Source Project
|
||
|
|
*
|
||
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
||
|
|
* you may not use this file except in compliance with the License.
|
||
|
|
* You may obtain a copy of the License at
|
||
|
|
*
|
||
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
||
|
|
*
|
||
|
|
* Unless required by applicable law or agreed to in writing, software
|
||
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
||
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||
|
|
* See the License for the specific language governing permissions and
|
||
|
|
* limitations under the License.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#pragma once
|
||
|
|
|
||
|
|
#include <atomic>
|
||
|
|
#include <bitset>
|
||
|
|
#include <list>
|
||
|
|
#include <mutex>
|
||
|
|
#include <queue>
|
||
|
|
#include <thread>
|
||
|
|
#include <vector>
|
||
|
|
|
||
|
|
#include <android-base/thread_annotations.h>
|
||
|
|
|
||
|
|
#include "LogBuffer.h"
|
||
|
|
#include "LogReaderList.h"
|
||
|
|
#include "LogStatistics.h"
|
||
|
|
#include "LogTags.h"
|
||
|
|
#include "LogdLock.h"
|
||
|
|
#include "SerializedLogChunk.h"
|
||
|
|
#include "SerializedLogEntry.h"
|
||
|
|
|
||
|
|
class SerializedLogBuffer final : public LogBuffer {
|
||
|
|
public:
|
||
|
|
// Create SerializedLogChunk's with size = max_size_[log_id] / kChunkSizeDivisor.
|
||
|
|
static constexpr size_t kChunkSizeDivisor = 4;
|
||
|
|
|
||
|
|
SerializedLogBuffer(LogReaderList* reader_list, LogTags* tags, LogStatistics* stats);
|
||
|
|
void Init() override;
|
||
|
|
|
||
|
|
int Log(log_id_t log_id, log_time realtime, uid_t uid, pid_t pid, pid_t tid, const char* msg,
|
||
|
|
uint16_t len) override;
|
||
|
|
std::unique_ptr<FlushToState> CreateFlushToState(uint64_t start, LogMask log_mask)
|
||
|
|
REQUIRES(logd_lock) override;
|
||
|
|
bool FlushTo(LogWriter* writer, FlushToState& state,
|
||
|
|
const std::function<FilterResult(log_id_t log_id, pid_t pid, uint64_t sequence,
|
||
|
|
log_time realtime)>& filter)
|
||
|
|
REQUIRES(logd_lock) override;
|
||
|
|
|
||
|
|
bool Clear(log_id_t id, uid_t uid) override;
|
||
|
|
size_t GetSize(log_id_t id) override;
|
||
|
|
bool SetSize(log_id_t id, size_t size) override;
|
||
|
|
|
||
|
|
uint64_t sequence() const override { return sequence_.load(std::memory_order_relaxed); }
|
||
|
|
|
||
|
|
private:
|
||
|
|
bool ShouldLog(log_id_t log_id, const char* msg, uint16_t len);
|
||
|
|
void MaybePrune(log_id_t log_id) REQUIRES(logd_lock);
|
||
|
|
void Prune(log_id_t log_id, size_t bytes_to_free) REQUIRES(logd_lock);
|
||
|
|
void UidClear(log_id_t log_id, uid_t uid) REQUIRES(logd_lock);
|
||
|
|
void RemoveChunkFromStats(log_id_t log_id, SerializedLogChunk& chunk);
|
||
|
|
size_t GetSizeUsed(log_id_t id) REQUIRES(logd_lock);
|
||
|
|
|
||
|
|
LogReaderList* reader_list_;
|
||
|
|
LogTags* tags_;
|
||
|
|
LogStatistics* stats_;
|
||
|
|
|
||
|
|
size_t max_size_[LOG_ID_MAX] GUARDED_BY(logd_lock) = {};
|
||
|
|
std::list<SerializedLogChunk> logs_[LOG_ID_MAX] GUARDED_BY(logd_lock);
|
||
|
|
|
||
|
|
std::atomic<uint64_t> sequence_ = 1;
|
||
|
|
};
|
||
|
|
|
||
|
|
// Exposed for testing.
|
||
|
|
void ClearLogsByUid(std::list<SerializedLogChunk>& log_buffer, uid_t uid, size_t max_size,
|
||
|
|
log_id_t log_id, LogStatistics* stats);
|